fr-a802 (separated converter type) instruction
A800
INVERTER
A800
FR-A802 (SEPARATED CONVERTER TYPE)
INSTRUCTION MANUAL (HARDWARE)
FR-A842-07700(315K) to 12120(500K)
INVERTER
IB(NA)-0600534ENG-A(1402)MEE Printed in Japan
Model
FR-A802 INSTRUCTION
MANUAL (HARDWARE)
Model code
1A2-P54
Specifications subject to change without notice.
FR-A802 INSTRUCTION MANUAL (HARDWARE)
HEAD OFFICE: TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
A
INTRODUCTION
1
INSTALLATION AND WIRING
2
PRECAUTIONS FOR USE OF
THE INVERTER
3
PROTECTIVE FUNCTIONS
4
PRECAUTIONS FOR
MAINTENANCE AND
INSPECTION
SPECIFICATIONS
5
6
Thank you for choosing this Mitsubishi inverter.
This Instruction Manual describes handling and cautions about the hardware, such as installation and wiring, for the FR-A802
(separated converter type) that are different from the FR-800.
Information about the software, such as basic operations and parameters, is described in the FR-A800 Instruction Manual (Detailed)
in the CD-ROM enclosed with the product.
In addition to this manual, please read the manuals in the enclosed CD-ROM carefully. Do not use this product until you have a full
knowledge of the equipment, safety information and instructions.
Please forward this Instruction Manual to the end user.
 Fire Prevention
Safety Instructions
Caution
Do not attempt to install, operate, maintain or inspect the
product until you have read through this Instruction Manual
 Inverter must be installed on a nonflammable wall without holes
(Detailed) and appended documents carefully and can use the
(so that nobody touches the inverter heatsink on the rear side,
equipment correctly. Do not use this product until you have a
etc.). Mounting it to or near flammable material may cause a fire.
full knowledge of the equipment, safety information and
 If the inverter has become faulty, the inverter power must be
instructions.
switched OFF. A continuous flow of large current may cause a
Installation, operation, maintenance and inspection must be
fire.
performed by qualified personnel. Here, an expert means a
 Be sure to perform daily and periodic inspections as specified in
person who meets all the conditions below.
the Instruction Manual. If a product is used without any
• A person who took a proper engineering training. Such
inspection, a burst, breakage, or a fire may occur.
training may be available at your local Mitsubishi Electric
office. Contact your local sales office for schedules and

Injury
Prevention
locations.
• A person who can access operating manuals for the
protective devices (e.g. light curtain) connected to the safety
Caution
control system. A person who has read and familiarized
 The voltage applied to each terminal must be the ones specified
himself/herself with the manuals.
in the Instruction Manual. Otherwise burst, damage, etc. may
occur.
In this Instruction Manual (Detailed), the safety instruction
 The cables must be connected to the correct terminals.
levels are classified into "Warning" and "Caution"
Otherwise burst, damage, etc. may occur.
Incorrect handling may cause hazardous
 The polarity (+ and -) must be correct. Otherwise burst, damage,
Warning conditions, resulting in death or severe
etc. may occur.
injury.
 While power is ON or for some time after power-OFF, do not
Incorrect handling may cause hazardous
touch the inverter as it will be extremely hot. Touching these
Caution conditions, resulting in medium or slight
devices may cause a burn.
injury, or may cause only material
damage.
 Additional Instructions
The following instructions must be also followed. If the product
The
Caution level may even lead to a serious
is handled incorrectly, it may cause unexpected fault, an injury,
consequence according to conditions. Both instruction levels
or an electric shock.
must be followed because these are important to personal
safety.
Caution
 Electric Shock Prevention
Warning
 While the inverter power is ON, do not open the front cover or
the wiring cover. Do not run the inverter with the front cover or
the wiring cover removed. Otherwise you may access the
exposed high voltage terminals or the charging part of the
circuitry and get an electric shock.
 Even if power is OFF, do not remove the front cover except for
wiring or periodic inspection. You may accidentally touch the
charged inverter circuits and get an electric shock.
 Before wiring or inspection, LED indication of the operation
panel must be switched OFF. Any person who is involved in
wiring or inspection shall wait for at least 10 minutes after the
power supply has been switched OFF and check that there are
no residual voltage using a tester or the like. The capacitor is
charged with high voltage for some time after power OFF, and it
is dangerous.
 This inverter must be earthed (grounded). Earthing (grounding)
must conform to the requirements of national and local safety
regulations and electrical code (NEC section 250, IEC 536 class
1 and other applicable standards). A neutral-point earthed
(grounded) power supply inverter in compliance with EN
standard must be used.
 Any person who is involved in wiring or inspection of this
equipment shall be fully competent to do the work.
 The inverter must be installed before wiring. Otherwise you may
get an electric shock or be injured.
 Setting dial and key operations must be performed with dry
hands to prevent an electric shock. Otherwise you may get an
electric shock.
 Do not subject the cables to scratches, excessive stress,heavy
loads or pinching. Otherwise you may get an electric shock.
 Do not change the cooling fan while power is ON. It is dangerous
to change the cooling fan while power is ON.
 Do not touch the printed circuit board or handle the cables with
wet hands. Otherwise you may get an electric shock.
 An PM motor is a synchronous motor with high-performance
magnets embedded in the rotor. Motor terminals holds highvoltage while the motor is running even after the inverter power
is turned OFF. Before wiring or inspection, the motor must be
confirmed to be stopped. In an application, such as fan and
blower, where the motor is driven by the load, a low-voltage
manual motor starter must be connected at the inverter's output
side, and wiring and inspection must be performed while the
motor starter is open. Otherwise you may get an electric shock.
Transportation and Mounting
 Any person who is opening a package using a sharp object,
such as a knife and cutter, must wear gloves to prevent injuries
caused by the edge of the sharp object.
 The product must be transported in correct method that
corresponds to the weight. Failure to do so may lead to injuries.
 Do not stand or rest heavy objects on the product.
 Do not stack the boxes containing inverters higher than the
number recommended.
 When carrying the inverter, do not hold it by the front cover; it
may fall off or fail.
 During installation, caution must be taken not to drop the inverter
as doing so may cause injuries.
 The product must be installed on the surface that withstands the
weight of the inverter.
 Do not install the product on a hot surface.
 The mounting orientation of the inverter must be correct.
 The inverter must be installed on a strong surface securely with
screws so that it will not drop.
 Do not install or operate the inverter if it is damaged or has parts
missing.
 Foreign conductive objects must be prevented from entering the
inverter. That includes screws and metal fragments or other
flammable substance such as oil.
 As the inverter is a precision instrument, do not drop or subject it
to impact.
 The surrounding air temperature for LD, ND (initial setting), and
HD models must be between -10 and +50°C (non-freezing). The
surrounding air temperature for SLD must be between -10 and
+40°C (non-freezing). Otherwise the inverter may be damaged.
 The ambient humidity must be 95%RH or less (noncondensing). Otherwise the inverter may be damaged. (Refer to
page 17 for details.)
Safety Instructions
1
Caution
Transportation and Mounting
 The storage temperature (applicable for a short time, e.g. during
transit) must be between -20 and +65°C. Otherwise the inverter
may be damaged.
 The inverter must be used indoors (without corrosive gas,
flammable gas, oil mist, dust and dirt etc.) Otherwise the inverter
may be damaged.
 The inverter must be used at an altitude of 2500 m or less above
sea level, with 2.9 m/s2 or less vibration at 10 to 55 Hz
(directions of X, Y, Z axes). Otherwise the inverter may be
damaged. (Refer to page 17 for details.)
 If halogen-based materials (fluorine, chlorine, bromine, iodine,
etc.) infiltrate into a Mitsubishi product, the product will be
damaged. Halogen-based materials are often included in
fumigant, which is used to sterilize or disinfest wooden
packages. When packaging, prevent residual fumigant
components from being infiltrated into Mitsubishi products, or
use an alternative sterilization or disinfection method (heat
disinfection, etc.) for packaging. Sterilization of disinfection of
wooden package should also be performed before packaging
the product.
Wiring
 Do not install a power factor correction capacitor or surge
suppressor/capacitor type filter on the inverter output side.
These devices on the inverter output side may be overheated or
burn out.
 The output side terminals (terminals U, V, and W) must be
connected correctly. Otherwise the motor will rotate inversely.
 PM motor terminals (U, V, W) hold high-voltage while the PM
motor is running even after the power is turned OFF. Before
wiring, the PM motor must be confirmed to be stopped.
Otherwise you may get an electric shock.
 Never connect an PM motor to the commercial power supply.
Applying the commercial power supply to input terminals (U,V,
W) of an PM motor will burn the PM motor. The PM motor must
be connected with the output terminals (U, V, W) of the inverter.
Trial run
 Before starting operation, each parameter must be confirmed
and adjusted. A failure to do so may cause some machines to
make unexpected motions.
Warning
Usage
 Everyone must stay away from the equipment when the retry
function is set as it will restart suddenly after a trip.
Since pressing a key may not stop output depending on
the function setting status, separate circuit and switch that make
an emergency stop (power OFF, mechanical brake operation for
emergency stop, etc.) must be provided.
 OFF status of the start signal must be confirmed before resetting
the inverter fault. Resetting inverter fault with the start signal ON
restarts the motor suddenly.
 Do not use an PM motor for an application where the PM motor
is driven by its load and runs at a speed higher than the
maximum motor speed.
 Use this inverter only with three-phase induction motors or with
an PM motor. Connection of any other electrical equipment to
the inverter output may damage the equipment.
 Performing pre-excitation (LX signal and X13 signal) under
torque control (Real sensorless vector control) may start the
motor running at a low speed even when the start command
(STF or STR) is not input The motor may run also at a low speed
when the speed limit value = 0 with a start command input. It
must be confirmed that the motor running will not cause any
safety problem before performing pre-excitation.
 Do not modify the equipment.
 Do not perform parts removal which is not instructed in this
manual. Doing so may lead to fault or damage of the product.

2
Safety Instructions
Caution
Usage
 The electronic thermal relay function does not guarantee
protection of the motor from overheating. It is recommended to
install both an external thermal and PTC thermistor for overheat
protection.
 Do not use a magnetic contactor on the inverter input for
frequent starting/stopping of the inverter. Otherwise the life of the
inverter decreases.
 The effect of electromagnetic interference must be reduced by
using a noise filter or by other means. Otherwise nearby
electronic equipment may be affected.
 Appropriate measures must be taken to suppress harmonics.
Otherwise power supply harmonics from the inverter may heat/
damage the power factor correction capacitor and generator.
 When driving a 400V class motor by the inverter, the motor must
be an insulation-enhanced motor or measures must be taken to
suppress surge voltage. Surge voltage attributable to the wiring
constants may occur at the motor terminals, deteriorating the
insulation of the motor.
 When parameter clear or all parameter clear is performed, the
required parameters must be set again before starting
operations. because all parameters return to their initial values.
 The inverter can be easily set for high-speed operation. Before
changing its setting, the performances of the motor and machine
must be fully examined.
 Stop status cannot be hold by the inverter's brake function. In
addition to the inverter’s brake function, a holding device must
be installed to ensure safety.
 Before running an inverter which had been stored for a long
period, inspection and test operation must be performed.
 Static electricity in your body must be discharged beforeyou
touch the product.
 Only one PM motor can be connected to an inverter.
 An PM motor must be used under PM sensorless vector control.
Do not use a synchronous motor, induction motor, or
synchronous induction motor.
 Do not connect an PM motor in the induction motor control
settings (initial settings). Do not use an induction motor in the
PM sensorless vector control settings. It will cause a failure.
 In the system with an PM motor, the inverter power must be
turned ON before closing the contacts of the contactor at the
output side.
Emergency stop
 A safety backup such as an emergency brake must be provided
to prevent hazardous conditions to the machine and equipment
in case of inverter failure.
 When the breaker on the inverter input side trips, thewiring must
be checked for fault (short circuit), and internalparts of the drive
unit for a damage, etc. The cause of the trip must be identified
and removed before turning ON the power of the breaker.
 When a protective function activates, take an appropriate
corrective action, then reset the inverter, and resume the
operation.
Maintenance, inspection and parts replacement
 Do not carry out a megger (insulation resistance) test on the
control circuit of the inverter. It will cause a failure.
Disposal
 The inverter must be treated as industrial waste.
General instruction
 Many of the diagrams and drawings in the Instruction Manual
show the product without a cover or partially open for
explanation. Never operate the product in this manner. The
cover must be always reinstalled and the instruction in the
Instruction Manual must be followed when operating the product.
For more details on the PM motor, refer to the Instruction Manual
of the PM motor.
CONTENTS
1 INTRODUCTION
7
1.1
Product checking and accessories
8
1.2
Inverter component names
9
1.3
About the related manuals
10
2 INSTALLATION AND WIRING
2.1
11
Peripheral devices
2.1.1
2.1.2
12
Inverter and peripheral devices ......................................................................................................................12
Peripheral devices ..........................................................................................................................................14
2.2
Removal and reinstallation of the front cover
15
2.3
Installation of the inverter and enclosure design
17
2.3.1
2.3.2
2.3.3
2.3.4
Inverter installation environment.....................................................................................................................17
Cooling system types for inverter enclosure...................................................................................................19
Inverter installation..........................................................................................................................................20
Protruding the heatsink...................................................................................................................................22
2.4
Terminal connection diagrams
24
2.5
Main circuit terminals
28
2.5.1
2.5.2
2.5.3
2.5.4
2.5.5
2.6
Control circuit
2.6.1
2.6.2
2.6.3
2.6.4
2.6.5
2.6.6
2.6.7
2.6.8
2.7
Details on the main circuit terminals of the inverter ........................................................................................28
Details on the main circuit terminals of the converter unit (FR-CC2)..............................................................28
Terminal layout of the main circuit terminals, wiring of power supply and the motor......................................29
Applicable cables and wiring length................................................................................................................30
Earthing (grounding) precautions ...................................................................................................................32
33
Details on the control circuit terminals of the inverter .....................................................................................33
Details on the control circuit terminals of the converter unit (FR-CC2)...........................................................37
Control logic (sink/source) change .................................................................................................................38
Wiring of inverter control circuit ......................................................................................................................40
Wiring precautions ..........................................................................................................................................42
When using separate power supplies for the control circuit and the main circuit ...........................................43
When supplying 24 V external power to the control circuit .............................................................................44
Safety stop function ........................................................................................................................................45
Communication connectors and terminals
2.7.1
2.7.2
2.7.3
47
PU connector ..................................................................................................................................................47
USB connector................................................................................................................................................48
RS-485 terminal block ....................................................................................................................................49
2.8
Connection of motor with encoder (vector control)
50
2.9
Connection of stand-alone option units
57
2.9.1
2.9.2
Connection of the brake unit (FR-BU2) ..........................................................................................................57
Connection of the high power factor converter (FR-HC2) ..............................................................................58
CONTENTS
3
3 PRECAUTIONS FOR USE OF THE INVERTER 59
3.1
Electro-magnetic interference (EMI) and leakage currents
3.1.1
3.1.2
3.1.3
3.2
Leakage currents and countermeasures........................................................................................................ 60
Countermeasures against inverter-generated EMI ........................................................................................ 63
Converter unit (FR-CC2) built-in EMC filter.................................................................................................... 66
Power supply harmonics
3.2.1
3.2.2
67
Power supply harmonics ................................................................................................................................ 67
Harmonic Suppression Guidelines in Japan .................................................................................................. 68
3.3
Installation of a reactor
70
3.4
Power-OFF and magnetic contactor (MC)
71
3.5
Countermeasures against deterioration of the 400 V class motor insulation
72
3.6
Checklist before starting operation
73
3.7
Failsafe system which uses the inverter
76
4 PROTECTIVE FUNCTIONS
79
4.1
Inverter fault and alarm indications
80
4.2
Reset method for the protective functions
80
4.3
Check and clear of the faults history
81
4.4
List of fault displays
83
5 PRECAUTIONS FOR
MAINTENANCE AND INSPECTION
5.1
Inspection item
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.1.7
5.2
85
86
Daily inspection .............................................................................................................................................. 86
Periodic inspection ......................................................................................................................................... 86
Daily and periodic inspection.......................................................................................................................... 87
Checking the inverter and converter modules................................................................................................ 88
Cleaning ......................................................................................................................................................... 89
Replacement of parts ..................................................................................................................................... 89
Inverter replacement ...................................................................................................................................... 91
Measurement of main circuit voltages, currents and powers
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
4
60
92
Measurement of powers................................................................................................................................. 94
Measurement of voltages and use of PT........................................................................................................ 94
Measurement of currents ............................................................................................................................... 95
Use of CT and transducer .............................................................................................................................. 95
Example of measuring converter unit (FR-CC2) input power factor............................................................... 95
Measurement of converter output voltage (across terminals P and N) .......................................................... 95
Measurement of inverter output frequency..................................................................................................... 96
CONTENTS
5.2.8
5.2.9
Insulation resistance test using megger .........................................................................................................96
Pressure test...................................................................................................................................................96
6 SPECIFICATIONS
97
6.1
Inverter rating
6.2
Common specifications
100
6.3
Outline dimension drawings
102
6.3.1
6.3.2
98
Inverter outline dimension drawings .............................................................................................................102
Converter unit (FR-CC2) outline dimension drawings ..................................................................................104
APPENDIX
Appendix1
Appendix2
Appendix3
Appendix4
105
For customers replacing the conventional model with this inverter................................
Comparison with FR-A840....................................................................................................
Instructions for compliance with the EU Directives...........................................................
Instructions for UL and cUL .................................................................................................
CONTENTS
106
108
109
111
5
MEMO
6
1
INTRODUCTION
This chapter contains the descriptions that must be read before
using this product.
Always read the instructions before using the equipment.
1.1
1.2
Product checking and accessories.........................................8
Inverter component names ......................................................9
<Abbreviations>
DU..................................... Operation panel (FR-DU08)
PU ..................................... Operation panel (FR-DU08) and parameter unit (FR-PU07)
Inverter.............................. Mitsubishi inverter FR-A800 series (Separated converter type)
Pr. ..................................... Parameter number (Number assigned to function)
PU operation ..................... Operation using the PU (FR-DU08/FR-PU07)
External operation............. Operation using the control circuit signals
Combined operation ......... Combined operation using the PU (FR-DU08/FR-PU07) and External operation
1
<Notes on descriptions in this Instruction Manual>
• Connection diagrams in this Instruction Manual suppose that the control logic of the input terminal is the sink
logic, unless otherwise specified. (For the control logic, refer to page 38.)
Harmonic Suppression Guidelines
All the models of the inverters used by specific consumers are covered by "the Harmonic Suppression
Guidelines for Consumers Who Receive High Voltage or Special High Voltage". For the details, refer to page 68.
INTRODUCTION
7
Product checking and accessories
1.1
Product checking and accessories
Unpack the product and check the capacity plate on the front cover and the rating plate on the side to ensure that the model
agrees with the order and the product is intact.
 Applicable inverter model
Symbol Voltage class
4
400V class
Symbol Structure, functionality
2
Separated converter type
Symbol
Description
315K to 500K ND rated inverter capacity (kW)
07700 to 12120 SLD rated inverter current (A)
Symbol Type∗1
-1
FM
-2
CA
F R - A 8 4 2 - 315K - 1
Symbol Circuit board coating (3C2) Plated conductor
Not used
Not used
Not used
-60
With
Not used
-06
With
With
Rating plate
Inverter model
Input rating
Output rating
SERIAL
Manufactured
year and month

Specification differs by the type as follows.
Type
Monitor output
Built-in
EMC filter
Initial setting
Rated
Control logic
frequency
Pr.19 Base frequency
voltage
FM
(terminal FM
equipped model)
Terminal FM (pulse train output)
Terminal AM (analog voltage output (0 to
10 VDC))
OFF
Sink logic
60 Hz
9999 (same as the power
supply voltage)
CA
(terminal CA
equipped model)
Terminal CA (analog current output (0 to
20 mA DC))
Terminal AM (analog voltage output (0 to
10 VDC))
ON
Source logic
50 Hz
8888 (95% of the power
supply voltage)
NOTE
• Hereinafter, the inverter model name consists of the rated current and the applicable motor capacity.
(Example) FR-A842-07700(315K)
 How to read the SERIAL number
Rating plate example



Symbol Year Month
SERIAL
8
INTRODUCTION

Control number
The SERIAL consists of one symbol, two characters indicating the production
year and month, and six characters indicating the control number.
The last digit of the production year is indicated as the Year, and the Month is
indicated by 1 to 9, X (October), Y (November), or Z (December).
Inverter component names
1.2
Inverter component names
Component names are shown below.
(a)
(g)
(d)
(h)
(b)
(i)
(q)
(c)
(e)
(f)
(j)
(k)
(l)
(n)
(m)
(o)
(p)
Symbol
Name
Refer to
page
Description
(a)
RS-485 terminals
(b)
Plug-in option connector 1
Enables RS-485 and Modbus-RTU communication.
49
(c)
Plug-in option connector 2
Connects a plug-in option or a communication option.
Instruction
Manual of
the option
(d)
Plug-in option connector 3
(e)
Voltage/current input switch
Selects between voltage and current for the terminal 2 and 4 inputs.
(f)
Control circuit terminal block
Connects cables for the control circuit.
33
(g)
PU connector
Connects the operation panel (FR-DU08) or the parameter unit (FR-PU07).
This connector also enables the RS-485 communication.
47
(h)
USB A connector
Connects a USB memory device.
48
(i)
USB mini B connector
Connects a personal computer and enables communication with FR
Configurator2.
48
(j)
Front cover
Remove this cover for the installation of the product, installation of a plug-in
(communication) option, RS-485 terminal wiring, switching of the voltage/
current input switch, etc.
15

(k)
Power lamp
Stays ON while the power is supplied to the control circuit (R1/L11, S1/L21).
29
(l)
Alarm lamp
Turns ON when the protective function of the inverter is activated.
79
(m)
Charge lamp
Stays ON while the power is supplied to the main circuit.
29
(n)
Operation panel (FR-DU08)
Operates and monitors the inverter.
(o)
Terminal block cover
Remove this cover for wiring.
15
(p)
Main circuit terminal block
Connects cables for the main circuit.
28
(q)
Cooling fan
Cools the inverter.
90

1

Refer to the FR-A800 Instruction Manual (Detailed)
INTRODUCTION
9
About the related manuals
1.3
About the related manuals
The manuals related to FR-A800 are shown below.
Manual name
Manual number
FR-A800 Instruction Manual (Detailed)
IB-0600503ENG
FR-CC2 Instruction Manual
IB-0600543ENG
FR Configurator2 Instruction Manual
IB-0600516ENG
FR-A800 PLC Function Programming Manual
IB-0600492ENG
FR-A800Safety stop function instruction manual
BNC-A23228-001
10
INTRODUCTION
2
INSTALLATION AND
WIRING
This chapter explains the "installation" and the "wiring" of this
product.
Always read the instructions before using the equipment.
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
Peripheral devices ....................................................................12
Removal and reinstallation of the front cover........................15
Installation of the inverter and enclosure design ..................17
Terminal connection diagrams ................................................24
Main circuit terminals ...............................................................28
Control circuit ...........................................................................33
Communication connectors and terminals ............................47
Connection of motor with encoder (vector control) ..............50
Connection of stand-alone option units .................................57
2
INSTALLATION AND WIRING
11
Peripheral devices
2.1
Peripheral devices
2.1.1
Inverter and peripheral devices
(c) Three-phase AC power supply
(d) Moulded case
circuit breaker
(MCCB) or earth
leakage current
breaker (ELB),
fuse
(b) Converter unit
(FR-CC2)
(a) Inverter
(FR-A802)
(k) USB connector
USB host
(A connector)
Communication
status indicator
(LED)(USB host)
USB
USB device
(Mini B connector)
(e) Magnetic
contactor
(MC)
Personal computer
(FR Configurator 2)
(f) AC reactor
(FR-HAL)
R/L1 S/L2 T/L3 N/- P/+
P/+ N/-
P/+ N/-
(g) Noise filter
Earth
(Ground)
Earth
(Ground)
IM connection
PM connection
U VW
U VW
(l) Noise filter
(FR-BSF01, FR-BLF)
(i) Brake unit
(FR-BU2)
(n) Contactor
Example) No-fuse
switch
(DSN type)
P/+ PR
(o) PM motor
P/+
PR
(h) High power factor converter
(FR-HC2)
(j) Resistor unit
(MT-BR5)
: Install these options as required.
(m) Induction
motor
Earth
(Ground)
Earth (Ground)
NOTE
• To prevent an electric shock, always earth (ground) the motor, the inverter, and the converter unit.
• Do not install a power factor correction capacitor or surge suppressor or capacitor type filter on the inverter's output side. Doing
so will cause the inverter to trip or the capacitor and surge suppressor to be damaged. If any of the above devices is connected,
immediately remove it. When installing a molded case circuit breaker on the output side of the inverter, contact the manufacturer
of the molded case circuit breaker.
• Electromagnetic wave interference
The input/output (main circuit) of the inverter or the converter unit includes high frequency components, which may interfere
with the communication devices (such as AM radios) used near the inverter or the converter unit. In this case, activating the
EMC filter of the converter unit may minimize interference. (Refer to page 66.)
• For details of options and peripheral devices, refer to the respective Instruction Manual.
• A PM motor cannot be driven by the commercial power supply.
• A PM motor is a motor with permanent magnets embedded inside. High voltage is generated at the motor terminals while the
motor is running. Before closing the contactor at the output side, make sure that the inverter power is ON and the motor is
stopped.
12
INSTALLATION AND WIRING
Peripheral devices
Symbol
(a)
Name
Inverter (FR-A802)
Overview
Refer
to
page
The life of the inverter and the converter unit is influenced by the
surrounding air temperature.
The surrounding air temperature should be as low as possible within the
permissible range. This must be noted especially when the inverter is
installed in an enclosure.
Incorrect wiring may lead to damage of the inverter and the converter unit.
The control signal lines must be kept fully away from the main circuit lines to
protect them from noise.
The converter unit built-in EMC filter can reduce the noise.
17
24
66
(b)
Converter unit (FR-CC2)
(c)
Three-phase AC power supply
Must be within the permissible power supply specifications of the converter
unit.
98
(d)
Molded case circuit breaker (MCCB),
earth leakage circuit breaker (ELB), or
fuse
Must be selected carefully since an inrush current flows in the converter unit
at power ON.
14
(e)
Magnetic contactor (MC)
Install this to ensure safety.
Do not use this to start and stop the inverter. Doing so will shorten the life of
the inverter and the converter unit.
71
(f)
AC reactor (FR-HAL)
Install this to suppress harmonics and to improve the power factor.
An AC reactor (FR-HAL) (option) is required when installing the inverter
near a large power supply system (1000 kVA or more). Under such
condition, the inverter and the converter unit may be damaged if you do not
use a reactor.
Select a reactor according to the applied motor capacity.
70
(g)
Noise filter
Suppresses the noise radiated from the power supply side of the converter
unit.
63
(h)
High power factor converter (FR-HC2)
Suppresses the power supply harmonics significantly. Install these options
as required.
When FR-HC2 is used, FR-CC2 is not required.
58
Allows the inverter to provide the optimal regenerative braking capability.
Install these options as required.
57
(i)
Brake unit (FR-BU2)
(j)
Resistor unit (MT-BR5)
(k)
USB connection
A USB (Ver. 1.1) cable connects the inverter with a personal computer.
A USB memory device enables parameter copies and the trace function.
48
(l)
Noise filter
Install this to reduce the electromagnetic noise generated from the inverter
and the converter unit. The noise filter is effective in the range from about
0.5 MHz to 5 MHz.
63
(m)
Induction motor
Connect a squirrel-cage induction motor.
—
(n)
Contactor
Example) No-fuse switch (DSN type)
Connect this for an application where a PM motor is driven by the load even
while the inverter power is OFF. Do not open or close the contactor while
the inverter is running (outputting).
—
(o)
PM motor
A PM motor can be used. A PM motor cannot be driven by the commercial
power supply.
—
2
INSTALLATION AND WIRING
13
Peripheral devices
2.1.2
Peripheral devices
Selecting the converter unit (FR-CC2)
Select the capacity of the FR-CC2 converter unit according to the connected motor capacity.
Inverter
ND (normal duty,
LD (light duty)
initial value)
Rated
Rated
Model
Model
current
current
FR-A842-[ ]
FR-A842-[ ]
(A)
(A)
Motor
Converter SLD (superlight duty)
capacity
unit
Rated
(kW)  FR-CC2-[ ]
Model
current
FR-A842-[ ]
(A)
HD (heavy duty)
Rated
current
(A)
Model
FR-A842-[ ]
280
H315
-
-
-
-
-
-
-
-
-
315K
07700
547
315
H315K
-
-
-
-
-
-
315K
07700
610
355K
08660
610
355
H355K
-
-
-
315K
07700
683
355K
08660
683
400K
09620
683
400
H400K
315K
07700
770
355K
08660
770
400K
09620
770
450K
10940
770
450
H450K
355K
08660
866
400K
09620
866
450K
10940
866
500K
12120
866
500
H500K
400K
09620
962
450K
10940
962
500K
12120
962
-
-
-

The applicable motor capacity indicated is the maximum capacity applicable for use of the Mitsubishi 4-pole standard motor.
Selecting the breaker/magnetic contactor
Check the model of the inverter and the converter unit you purchased. Appropriate peripheral devices must be selected
according to the capacity.
Refer to the table below to prepare appropriate peripheral devices.
• 400 V class
Motor
output
(kW)
Applicable converter
model
Molded case circuit breaker (MCCB)
or
earth leakage circuit breaker (ELB)
(NF, NV type)
Input-side magnetic contactor
315
FR-CC2-H315K
700A
S-N600
355
FR-CC2-H355K
800A
S-N600
400
FR-CC2-H400K
900A
S-N800
450
FR-CC2-H450K
1000A
1000A rated product
500
FR-CC2-H500K
1200A
1000A rated product



Assumes the use of a Mitsubishi 4-pole standard motor with the power supply voltage of 400
VAC 50 Hz.
Select an MCCB according to the power supply capacity.
MCCB Converter unit INV M
Install one MCCB per converter.
For the use in the United States or Canada, provide the appropriate UL and cUL listed fuse or
MCCB Converter unit INV M
UL489 molded case circuit breaker (MCCB) that is suitable for branch circuit protection. (Refer
to page 111.)
The magnetic contactor is selected based on the AC-1 class. The electrical durability of magnetic contactor is 500,000 times. When the
magnetic contactor is used for emergency stops during motor driving, the electrical durability is 25 times.
If using an MC for emergency stop during driving the motor, select an MC regarding the converter unit input side current as JEM1038-AC-3 class
rated current. When using an MC on the inverter output side for commercial-power supply operation switching using a general-purpose motor,
select an MC regarding the rated motor current as JEM1038-AC-3 class rated current.
NOTE
• When the converter unit capacity is larger than the motor capacity, select an MCCB and a magnetic contactor according to
the converter unit model, and select cables and reactors according to the motor output.
• When the breaker on the converter unit's input side trips, check for the wiring fault (short circuit), damage to internal parts of
the inverter and the converter unit, etc. The cause of the trip must be identified and removed before turning ON the power of
the breaker.
14
INSTALLATION AND WIRING
Removal and reinstallation of the front cover
2.2
Removal and reinstallation of the front cover
Removal and reinstallation of the operation panel
• Loosen the two screws on the operation panel.
• Push the upper part of the operation panel and pull the
(These screws cannot be removed.)
operation panel to remove.
To reinstall the operation panel, align its connector on the back with the PU connector of the inverter, and insert the operation
panel. After confirming that the operation panel is fit securely, tighten the screws. (Tightening torque: 0.40 to 0.45 N·m)
Removal of the terminal block cover
(a)
(b)
2
(a)
(b)
Remove the mounting screws to remove the terminal block cover. (The number of the mounting screws differs by the capacity.)
With the terminal block cover removed, wiring of the main circuit terminals can be performed.
INSTALLATION AND WIRING
15
Removal and reinstallation of the front cover
Removal of the front cover
(a)
(b)
(c)
Loosen
(a)
(b)
(c)
With the terminal block cover removed, loosen the mounting screws on the front cover. These screws cannot be removed.
While holding the areas around the installation hooks on the sides of the front cover, pull out the front cover using its upper side
as a support.
With the front cover removed, wiring of the control circuit and the RS-485 terminals, and installation of the plug-in option can be
performed.
Reinstallation of the front cover and the terminal block cover
(b)
(a)
(c)
Fasten
Fasten
(a)
(b)
(c)
Insert the upper hooks of the front cover into the sockets of the inverter.
Securely install the front cover to the inverter by fixing the hooks on the sides of the cover into place.
Tighten the mounting screw at the lower part of the front cover.
Fasten the terminal block cover with the mounting screws. (The number of the mounting screws differs by the capacity.)
NOTE
• Fully make sure that the front cover and the terminal block cover are installed securely. Always tighten the mounting screws
of the front cover and the terminal block cover.
16
INSTALLATION AND WIRING
Installation of the inverter and enclosure design
2.3
Installation of the inverter and enclosure design
When designing or manufacturing an inverter enclosure, determine the structure, size, and device layout of the enclosure by
fully considering the conditions such as heat generation of the contained devices and the operating environment. An inverter
uses many semiconductor devices. To ensure higher reliability and long period of operation, operate the inverter in the
ambient environment that completely satisfies the equipment specifications.
2.3.1
Inverter installation environment
The following table lists the standard specifications of the inverter installation environment. Using the inverter in an
environment that does not satisfy the conditions deteriorates the performance, shortens the life, and causes a failure. Refer to
the following points, and take adequate measures.
Standard environmental specifications of the inverter
Item
LD, ND (initial setting), HD
Surrounding
air
temperature
Description
Measurement
position
-10 to +50°C (non-freezing)
5cm
(1.97 inches)
SLD
Surrounding air humidity
-10 to +40°C (non-freezing)
Inverter
Measurement
position
5cm
(1.97 inches)
With circuit board coating 95% RH or less (non-condensing)
Without circuit board coating 90% RH or less (non-condensing)
Storage temperature
-20 to + 65°C
Atmosphere
Indoors (free from corrosive gas, flammable gas, oil mist, dust and dirt)
Altitude
Maximum 1,000 m above sea level
Vibration
2.9 m/s2 or less at 10 to 55 Hz (directions of X, Y, Z axes)


5cm
(1.97 inches)
Temperature applicable for a short time, e.g. in transit.
For the installation at an altitude above 1,000 m (up to 2,500 m), derate the rated current 3% per 500 m.
Temperature
The permissible surrounding air temperature of the inverter is between -10°C and +50°C (-10°C and +40°C at the SLD rating).
Always operate the inverter within this temperature range. Operation outside this range will considerably shorten the service
lives of the semiconductors, parts, capacitors and others. Take the following measures to keep the surrounding air
temperature of the inverter within the specified range.
(a) Measures against high temperature
• Use a forced ventilation system or similar cooling system. (Refer to page 19.)
• Install the enclosure in an air-conditioned electric chamber.
2
• Block direct sunlight.
• Provide a shield or similar plate to avoid direct exposure to the radiated heat and wind of a heat source.
• Ventilate the area around the enclosure well.
(b) Measures against low temperature
• Provide a space heater in the enclosure.
• Do not power OFF the inverter. (Keep the start signal of the inverter OFF.)
(c) Sudden temperature changes
• Select an installation place where temperature does not change suddenly.
• Avoid installing the inverter near the air outlet of an air conditioner.
• If temperature changes are caused by opening/closing of a door, install the inverter away from the door.
Humidity
Operate the inverter within the ambient air humidity of usually 45 to 90% (up to 95% with circuit board coating). Too high
humidity will pose problems of reduced insulation and metal corrosion. On the other hand, too low humidity may cause a
spatial electrical breakdown. The insulation distance defined in JEM1103 "Control Equipment Insulator" is humidity of 45 to
85%.
INSTALLATION AND WIRING
17
Installation of the inverter and enclosure design
(a) Measures against high humidity
• Make the enclosure enclosed, and provide it with a hygroscopic agent.
• Provide dry air into the enclosure from outside.
• Provide a space heater in the enclosure.
(b) Measures against low humidity
Air with proper humidity can be blown into the enclosure from outside. Also when installing or inspecting the unit, discharge
your body (static electricity) beforehand, and keep your body away from the parts and patterns.
(c) Measures against condensation
Condensation may occur if frequent operation stops change the in-enclosure temperature suddenly or if the outside air
temperature changes suddenly.
Condensation causes such faults as reduced insulation and corrosion.
• Take the measures against high humidity in (a).
• Do not power OFF the inverter. (Keep the start signal of the inverter OFF.)
Dust, dirt, oil mist
Dust and dirt will cause such faults as poor contacts, reduced insulation and cooling effect due to the moisture-absorbed
accumulated dust and dirt, and in-enclosure temperature rise due to a clogged filter. In an atmosphere where conductive
powder floats, dust and dirt will cause such faults as malfunction, deteriorated insulation and short circuit in a short time.
Since oil mist will cause similar conditions, it is necessary to take adequate measures.
Countermeasure
• Place the inverter in a totally enclosed enclosure.
Take measures if the in-enclosure temperature rises. (Refer to page 19.)
• Purge air.
Pump clean air from outside to make the in-enclosure air pressure higher than the outside air pressure.
Corrosive gas, salt damage
If the inverter is exposed to corrosive gas or to salt near a beach, the printed board patterns and parts will corrode or the
relays and switches will result in poor contact.
In such places, take the measures given above.
Explosive, flammable gases
As the inverter is non-explosion proof, it must be contained in an explosion-proof enclosure. In places where explosion may
be caused by explosive gas, dust or dirt, an enclosure cannot be used unless it structurally complies with the guidelines and
has passed the specified tests. This makes the enclosure itself expensive (including the test charges). The best way is to
avoid installation in such places and install the inverter in a non-hazardous place.
High altitude
Use the inverter at an altitude of within 1000 m. For use at an altitude above 1,000 m (up to 2,500 m), derate the rated current
3% per 500 m.
If it is used at a higher place, it is likely that thin air will reduce the cooling effect and low air pressure will deteriorate dielectric
strength.
Vibration, impact
The vibration resistance of the inverter is up to 2.9 m/s2 at 10 to 55 Hz frequency and 1 mm amplitude for the directions of X,
Y, Z axes. Applying vibration and impacts for a long time may loosen the structures and cause poor contacts of connectors,
even if those vibration and impacts are within the specified values.
Especially when impacts are applied repeatedly, caution must be taken because such impacts may break the installation feet.
Countermeasure
• Provide the enclosure with rubber vibration isolators.
• Strengthen the structure to prevent the enclosure from resonance.
• Install the enclosure away from the sources of the vibration.
18
INSTALLATION AND WIRING
Installation of the inverter and enclosure design
2.3.2
Cooling system types for inverter enclosure
From the enclosure that contains the inverter, the heat of the inverter and other equipment (transformers, lamps, resistors,
etc.) and the incoming heat such as direct sunlight must be dissipated to keep the in-enclosure temperature lower than the
permissible temperatures of the in-enclosure equipment including the inverter.
The cooling systems are classified as follows in terms of the cooling calculation method.
(a) Cooling by natural heat dissipation from the enclosure surface (totally enclosed type)
(b) Cooling by heatsink (aluminum fin, etc.)
(c) Cooling by ventilation (forced ventilation type, pipe ventilation type)
(d) Cooling by heat exchanger or cooler (heat pipe, cooler, etc.)
Cooling system
Enclosure structure
Natural ventilation
(enclosed, open type)
Comment
INV
This system is low in cost and generally used, but the
enclosure size increases as the inverter capacity increases.
This system is for relatively small capacities.
INV
Being a totally enclosed type, this system is the most
appropriate for hostile environment having dust, dirt, oil mist,
etc. The enclosure size increases depending on the inverter
capacity.
Natural
cooling
Natural ventilation (totally
enclosed type)
Heatsink cooling
Forced
cooling
Heatsink
INV
Forced ventilation
INV
Heat
pipe
Heat pipe
This system has restrictions on the heatsink mounting position
and area. This system is for relatively small capacities.
This system is for general indoor installation. This is
appropriate for enclosure downsizing and cost reduction, and
often used.
This is a totally enclosed for enclosure downsizing.
INV
2
INSTALLATION AND WIRING
19
Installation of the inverter and enclosure design
2.3.3
Inverter installation
Inverter placement
• Install the inverter on a strong surface securely with screws.
• Leave enough clearances and take cooling measures.
• Avoid places where the inverter is subjected to direct sunlight, high temperature and high humidity.
• Install the inverter on a nonflammable wall surface.
• When encasing multiple inverters in an enclosure, install them in parallel as a cooling measure.
• For heat dissipation and maintenance, keep clearance between the inverter and the other devices or enclosure surface.
The clearance below the inverter is required as a wiring space, and the clearance above the inverter is required as a heat
dissipation space.
Clearances (front)
Clearances (side)
20cm (7.87inches)
or more
10cm
(3.94inches)
or more
10cm
(3.94inches)
or more
5cm
(1.97
inches)
or more
∗1
Inverter
Vertical
Allow clearance.

20cm (7.87inches)
or more
For replacing the cooling fan, 30 cm (11.81 inches) or more of space is necessary in front of the inverter. Refer to page 90 for fan replacement.
Installation orientation of the inverter
Install the inverter on a wall as specified. Do not mount it horizontally or in any other way.
Above the inverter
Heat is blown up from inside the inverter by the small fan built in the unit. Any equipment placed above the inverter should be
heat resistant.
20
INSTALLATION AND WIRING
Installation of the inverter and enclosure design
Encasing multiple inverters and converter units
When multiple inverters and converter units are placed in the
same enclosure, generally arrange them horizontally as shown
in the figure on the right.
Do not place multiple products vertically. The exhaust air
Converter
unit
Inverter
Converter
unit
Inverter
Converter
unit
Inverter
temperature of the inverter and the converter unit may be
increased.
When mounting multiple inverters and converter units, fully take
caution not to make the surrounding air temperature of the
inverter and the converter unit higher than the permissible value
by providing ventilation and increasing the enclosure size.
Enclosure
Arrangement of multiple inverters and converter units
Arrangement of the ventilation fan and inverter
Heat generated in the inverter is blown up from the bottom of
the unit as warm air by the cooling fan. When installing a
ventilation fan for that heat, determine the place of ventilation
fan installation after fully considering an air flow. (Air passes
through areas of low resistance. Make an airway and airflow
plates to expose the inverter to cool air.)
Inverter
Inverter
<Good example>
<Bad example>
Arrangement of the ventilation fan and inverter
2
INSTALLATION AND WIRING
21
Installation of the inverter and enclosure design
2.3.4
Protruding the heatsink
When encasing an inverter to an enclosure, the heat generated in the enclosure can be greatly reduced by protruding the
heatsink of the inverter.
When installing the inverter in a compact enclosure, etc., this installation method is recommended.
 Panel cutting
Cut the panel of the enclosure according to the inverter capacity.
FR-A842-07700(315K)
FR-A842-09620(400K)
FR-A842-08660(355K)
FR-A842-10940(450K)
6-M10 screw
660
1520
15
15
22
240
240
Hole
1550
1270
1300
15
15
FR-A842-12120(500K)
520
200
200
INSTALLATION AND WIRING
Hole
6-M10 screw
Installation of the inverter and enclosure design
 Removal of the rear installation frame
Two installation frames are attached to each of the upper and lower
parts of the inverter. Remove the rear side installation frame on the top
Upper installation
frame (rear side)
and bottom of the inverter as shown on the right.
Lower installation
frame (rear side)
 Installation of the inverter
Push the inverter heatsink portion outside the enclosure and fix the enclosure and inverter with upper and lower
installation frame.
Enclosure
Inside the Exhausted air
enclosure
There are finger guards behind the enclosure.
Therefore, the thickness of the panel should be
less than 10 mm (∗1) and also do not place
anything around finger guards to avoid contact
with the finger guards.
Inverter
Enclosure
10mm∗1
140mm
Finger guard
6mm
Installation
frame
Cooling
wind Dimension of
185mm
the outside of
the enclosure
NOTE
• Having a cooling fan, the cooling section which comes out of the enclosure cannot be used in the environment of water drops,
oil, mist, dust, etc.
• Be careful not to drop screws, dust etc. into the inverter and cooling fan section.
INSTALLATION AND WIRING
23
2
Terminal connection diagrams
2.4
Terminal connection diagrams
FM type
Sink logic
Main circuit terminal
Brake unit
(Option)
Control circuit terminal
Converter
unit
U
V
W
P/+
R/L1 P/+
S/L2
T/L3 N/-
N/Jumper
Earth
(Ground)
Reverse rotation start
Start self-holding selection
PC
C1
STR
B1
STP(STOP)
A1
RH
High speed
+24
C1
Multi-speed
Middle speed
selection
B1
Low speed
A1
Jog operation
RDB
Second function selection
RDA
IPF
FAN
SE
B2
RT
RUN
MRS X10
SU

RES
IPF
AU
Terminal 4 input selection
Selection of automatic restart
after instantaneous power failure
Contact input common
CS
SD
24VDC power supply
(Common for external power supply transistor)
24V external power
supply input
Common terminal

10E(+10V)
10(+5V)
3
OL
FU
24V
PU
Voltage/current connector
input switch
ON
OFF
2 4
0 to 5VDC Initial value
2 0 to 10VDC selectable 
0 to 20mADC
2
5
1
Auxiliary (+)
(-)
input
(Analog common)
1
0 to ±10VDC Initial value
0 to ±5VDC selectable 
4 to 20mADC Initial value
Terminal 4 input (+)
(Current input) (-)
4 0 to 5VDC
selectable 
0 to 10VDC
Connector for plug-in option connection
connector 1 connector 2
connector 3
Shorting
wire
Safety stop input (Channel 1)
Safety stop input (Channel 2)
Safety stop input common
24
INSTALLATION AND WIRING
SE
PC
+24
SD
Frequency setting signals (Analog)
Safety stop signal
Relay output 2
A2
JOG 
Reset
Frequency setting
potentiometer
1/2W1kΩ 
Relay output 1
(Fault output)
RL
Output stop
RSO
Relay output 
C2
RM
SINK
SD
STF
SOURCE
RES
Main circuit
Control circuit
Control input signals
(No voltage input allowed) 
Forward rotation start
OH
Motor
Earth (Ground)
R1/L11
S1/L21

RDI
M
USB A
connector
F/C
(FM)

SD
USB
AM
mini B
5
connector
TXD+
TXDRXD+
RXDSG
Running
Open collector output 
Up to frequency

Overload
Frequency detection
Open collector output common
Sink/source common
+
-
Calibration
resistor 
(+)
(-)
Indicator
(Frequency
meter, etc.)
Moving-coil type
1mA full-scale
Analog signal output
(0 to ±10VDC)
RS-485 terminals
Data
transmission
Data
reception
GND
24V
Terminating
VCC
resistor
PC
S1
S2
SIC
SD
Output shutoff
circuit
So
SOC
5V (Permissible load
current 100mA)
Safety monitor output
Safety monitor output common
Terminal connection diagrams

The terminals R1/L11 and S1/L21 are connected to the terminals P/+ and N/- with a jumper respectively. When using separate power supply for
the control circuit, remove the jumpers from R1/L11 and S1/L21.
 The function of these terminals can be changed with the input terminal assignment (Pr.178 to Pr.189).
 Terminal JOG is also used as the pulse train input terminal. Use Pr.291 to choose JOG or pulse.
 The X10 signal (NC contact input specification) is assigned to the terminal MRS in the initial setting. Set Pr.599 = "0" to change the input
specification of the X10 signal to NO contact.
 Terminal input specifications can be changed by analog input specification switchover (Pr.73, Pr.267). To input a voltage (0 to 5 V/0 to 10 V), set
the voltage/current input switch OFF. To input a current (4 to 20 mA), set the voltage/current input switch ON. Terminals 10 and 2 are also used
as a PTC input terminal. (Pr.561)
 It is recommended to use 2 W 1 k when the frequency setting signal is changed frequently.
 The function of these terminals can be changed with the output terminal assignment (Pr.195, Pr.196).
 The function of these terminals can be changed with the output terminal assignment (Pr.190 to Pr.194).
 No function is assigned in the initial setting. Use Pr.192 for function assignment.
 The terminal FM can be used to output pulse trains as open collector output by setting Pr.291.
 Not required when calibrating the scale with the operation panel.
NOTE
• To prevent a malfunction due to noise, keep the signal cables 10 cm or more away from the power cables. Also, separate the
main circuit cables at the input side from the main circuit cables at the output side.
• After wiring, wire offcuts must not be left in the inverter.
Wire offcuts can cause an alarm, failure or malfunction. Always keep the inverter clean.
When drilling mounting holes in an enclosure etc., take caution not to allow chips and other foreign matter to enter the
inverter.
• Set the voltage/current input switch correctly. Incorrect setting may cause a fault, failure or malfunction.
2
INSTALLATION AND WIRING
25
Terminal connection diagrams
CA type
Sourse logic
Main circuit terminal
Brake unit
(Option)
Control circuit terminal
Converter
unit
R/L1
S/L2
T/L3
U
V
W
P/+
P/+
N/-
N/Jumper
Earth
(Ground)
Reverse rotation start
Start self-holding selection
PC
+24
C1
Low speed
A1
Jog operation
RDB
Second function selection
Output stop
B1
STP(STOP)
A1
RH
IPF
Terminal 4 input selection
FAN
Selection of automatic restart
after instantaneous power failure
B2
RT
RUN
MRS X10
SU

RES
IPF
AU
SD
OL
FU
24V
Frequency setting signals (Analog)
3
+24
SD
PU
Voltage/current connector
input switch
F/C
(CA)
10E(+10V) ON
USB A
OFF
connector
10(+5V)
2 4
5
1
(Analog common)
1
0 to ±10VDC Initial value
0 to ±5VDC selectable 
4 to 20mADC Initial value
Terminal 4 input (+)
(Current input) (-)
4 0 to 5VDC
selectable 
0 to 10VDC
Connector for plug-in option connection
connector 1 connector 2
connector 3
Shorting
wire
Safety stop input (Channel 1)
Safety stop input (Channel 2)
Safety stop input common
INSTALLATION AND WIRING
Running
Open collector output 
Up to frequency

Overload
Frequency detection
Open collector output common
Sink/source common

0 to 5VDC Initial value
2 0 to 10VDC selectable 
0 to 20mADC
2
Auxiliary (+)
(-)
input
26
SE
PC
Contact input common
24VDC power supply
24V external power
supply input
Common terminal
Safety stop signal
Relay output 2
A2
JOG 
Common for external
power supply transistor
Frequency setting
potentiometer
1/2W1kΩ 
Relay output 1
(Fault output)
RL
CS
Relay output 
C2
RM
Reset
RSO
SE
STR
High speed
Multi-speed
Middle speed
selection
B1
RDA
C1
SINK
SD
STF
SOURCE
RES
Main circuit
Control circuit
Control input signals
(No voltage input allowed) 
Forward rotation start
OH
Motor
Earth (Ground)
R1/L11
S1/L21

RDI
M
USB
mini B
connector
AM
5
TXD+
TXDRXD+
RXDSG
(+)
(-)
(+)
(-)
Analog current output
(0 to 20mADC)
Analog signal output
(0 to ±10VDC)
RS-485 terminals
Data
transmission
Data
reception
GND
24V
Terminating
VCC
resistor
PC
S1
S2
SIC
SD
Output shutoff
circuit
So
SOC
5V (Permissible load
current 100mA)
Safety monitor output
Safety monitor output common
Terminal connection diagrams









The terminals R1/L11 and S1/L21 are connected to the terminals P/+ and N/- with a jumper respectively. When using separate power supply for
the control circuit, remove the jumpers from R1/L11 and S1/L21.
The function of these terminals can be changed with the input terminal assignment (Pr.178 to Pr.189).
Terminal JOG is also used as the pulse train input terminal. Use Pr.291 to choose JOG or pulse.
The X10 signal (NC contact input specification) is assigned to the terminal MRS in the initial setting. Set Pr.599 = "0" to change the input
specification of the X10 signal to NO contact.
Terminal input specifications can be changed by analog input specification switchover (Pr.73, Pr.267). To input a voltage (0 to 5 V/0 to 10 V), set
the voltage/current input switch OFF. To input a current (4 to 20 mA), set the voltage/current input switch ON. Terminals 10 and 2 are also used
as a PTC input terminal. (Pr.561)
It is recommended to use 2 W 1 k when the frequency setting signal is changed frequently.
The function of these terminals can be changed with the output terminal assignment (Pr.195, Pr.196).
The function of these terminals can be changed with the output terminal assignment (Pr.190 to Pr.194).
No function is assigned in the initial setting. Use Pr.192 for function assignment.
NOTE
• To prevent a malfunction due to noise, keep the signal cables 10 cm or more away from the power cables. Also, separate the
main circuit cables at the input side from the main circuit cables at the output side.
• After wiring, wire offcuts must not be left in the inverter.
Wire offcuts can cause an alarm, failure or malfunction. Always keep the inverter clean.
When drilling mounting holes in an enclosure etc., take caution not to allow chips and other foreign matter to enter the
inverter.
• Set the voltage/current input switch correctly. Incorrect setting may cause a fault, failure or malfunction.
Connection between the converter unit and the inverter
Perform wiring so that the commands sent from the converter unit are transmitted to the inverter without fail. Incorrect
connection may damage the converter unit and the inverter.
For the wiring length, refer to the table below.
Total wiring
length
Across the terminals P and P and
the terminals N and N
50 m or lower
Other control signal cables
30 m or lower
For the cable gauge of the cable across the main circuit terminals P/+ and N/- (P and P, N and N), refer to page 30.
Converter unit
(FR-CC2)
MCCB
Power
supply
MC
R/L1
P/+
N/-
Inverter

S/L2
P/+
N/R1/L11
S1/L21
T/L3
U
V
W
M
R1/L11
S1/L21
RDA

RES
RSO




2
X11 
IPF
SE
MRS(X10)

RDB

SD
Do not install an MCCB across the terminals P/+ and N/- (across terminals P and P/+ or across N and N/-). Connecting the opposite polarity of
terminals N/- and P/+ will damage the inverter.
For the terminal used for the X10 signal input, set "10" in any of Pr.178 to Pr.189 (input terminal function selection) to assign the function.
(The X10 signal is assigned to the terminal MRS in the initial setting.)
For the X10 signal, NC contact input specification is selected in the initial setting. Set Pr.599 = "0" to change the input specification to NO
contact.
For the terminal used for the X11 signal input, set "11" in any of Pr.178 to Pr.189 (input terminal function selection) to assign the function. For
RS-485 or any other communication where the start command is only transmitted once, use the X11 signal to save the operation mode at the
time of an instantaneous power failure.
Always connect the terminal RDA of the converter unit and the terminal MRS (X10) of the inverter, and the terminal SE of the converter unit and
the terminal SD (sink logic) of the inverter. Not connecting these terminals may damage the converter unit.
INSTALLATION AND WIRING
27
Main circuit terminals
2.5
2.5.1
Terminal
symbol
Main circuit terminals
Details on the main circuit terminals of the
inverter
Terminal name
Terminal function description
Refer
to page
Inverter output
Connect these terminals to a three-phase squirrel cage motor or an PM
motor.
-
R1/L11,
S1/L21
Power supply for the control
circuit
Connected to the terminals P/+ and N/-. To retain the fault display and fault
output, or to use the converter unit (FR-CC2), remove the jumpers installed in
terminals R1/L11 and S1/L21, and apply external power supply to these
terminals.
The power capacity necessary when separate power is supplied from R1/L11
and S1/L21 is 80 VA.
43
P/+, N/-
Converter unit connection
Connect the converter unit (FR-CC2), brake unit (FR-BU2), or high power
factor converter (FR-HC2).
24, 57
Earth (ground)
For earthing (grounding) the inverter chassis. This must be earthed
(grounded).
32
U, V, W
2.5.2
Terminal
symbol
R/L1,
S/L2,
T/L3
Details on the main circuit terminals of the
converter unit (FR-CC2)
Terminal name
Terminal function description
Refer
to page
AC power input
Connect these terminals to the commercial power supply.
-
R1/L11,
S1/L21
Power supply for the control
circuit
Connected to the AC power supply terminals R/L1 and S/L2. To retain the
fault display and fault output, remove the jumpers across terminals R/L1 and
R1/L11 and across S/L2 and S1/L21, and supply external power to these
terminals.
The power capacity necessary when separate power is supplied from R1/L11
and S1/L21 is 80 VA.
43
P/+, N/-
Inverter connection
Connect to terminals P/+ and N/- of the inverter.
24
Earth (ground)
For earthing (grounding) the converter unit chassis. This must be earthed
(grounded).
32
28
INSTALLATION AND WIRING
Main circuit terminals
2.5.3
Terminal layout of the main circuit terminals,
wiring of power supply and the motor
FR-CC2-315K to FR-CC2-500K
FR-A842-07700(315K) to FR-A842-12120(500K)
R1/L11 S1/L21
R1/L11 S1/L21
Charge lamp
Charge lamp
Jumper
Jumper
N/-
N/R/L1
S/L2
P/+
T/L3
P/+
To inverter
Power supply
M
To converter
unit
Motor
NOTE
• Make sure the power cables are connected to the R/L1, S/L2, and T/L3 of the converter unit. (Phase need not be matched.)
Never connect the power cable to the U, V, and W of the inverter. Doing so will damage the inverter.
• Connect the motor to the U, V, and W of the inverter. (The phases must be matched.)
• When wiring the main circuit conductor, tighten a nut from the right side of the conductor.
When wiring two wires, place wires on both sides of the conductor. (Refer to the diagram below.)
For wiring, use bolts (nuts) provided with the inverter.
2
• When wiring the main circuit conductor (R/L1, S/L2, T/L3) of the converter unit (FR-CC2), use the bolts (nuts) for main circuit
wiring, which are provided on the front side of the conductor.
FR-CC2-H315K, H355K
Connect the cables here.
FR-CC2-H400K to H500K
Connect the cables here.
INSTALLATION AND WIRING
29
Main circuit terminals
2.5.4
Applicable cables and wiring length
Select a recommended cable size to ensure that the voltage drop will be 2% or less.
If the wiring distance is long between the inverter and motor, the voltage drop in the main circuit will cause the motor torque to
decrease especially at a low speed.
The following table indicates a selection example for the wiring length of 20 m (440 V input power supply, 150% overload
current rating for 1 minute).
• Converter unit (FR-CC2)
Converter
model
FR-CC2-[ ]
Cable gauge
Crimping
terminal
HIV cables, etc. (mm2)
AWG/MCM
PVC cables, etc.

(mm2)
R/L1,
Earthing
S/L2, (grounding)
T/L3
cable
Terminal
screw
Size
Tightening
Torque
N·m
315K
M12 (M10)
46
150-12
2150
2150
100
2300
2150
150
355K
M12 (M10)
46
C2-200
2200
2200
100
2350
2185
295
400K
M12 (M10)
46
C2-200
2200
2200
100
2400
2185
295
450K
M12 (M10)
46
C2-250
2250
2250
100
2500
2240
2120
500K
M12 (M10)
46
C2-200
3200
3200
2100
2500
2240
2120
R/L1,
S/L2,
T/L3
R/L1,
S/L2,
T/L3
Earthing
P/+, N/- (grounding)
cable
R/L1,
S/L2,
T/L3
• Inverter
Crimping
Inverter Terminal Tightening terminal
model
screw
Torque
FR-A840-[ ] size
N·m
U, V, W
Cable gauge
HIV cables, etc. (mm2)
U, V, W
AWG/MCM
Earthing
P/+, N/- (grounding)
cable
U, V, W
PVC cables, etc.
(mm2)
Earthing
U, V, W (grounding)
cable
07700(315K) M12 (M10) 46
150-12
2150
2150
100
2300
2150
150
08660(355K) M12 (M10) 46
C2-200
2200
2200
100
2350
2185
295
09620(400K) M12 (M10) 46
C2-200
2200
2200
100
2400
2185
295
10940(450K) M12 (M10) 46
C2-250
2250
2250
100
2500
2240
2120
12120(500K) M12 (M10) 46
C2-250
2250
3200
2100
2500
2240
2120




The gauge of the cable with the continuous maximum permissible temperature of 90°C or higher. (LMFC (heat resistant flexible cross-linked
polyethylene insulated cable), etc.). It assumes a surrounding air temperature of 40°C or lower and in-enclosure wiring.
The recommended cable size is that of the cable (THHN cable) with continuous maximum permissible temperature of 90°C. It assumes a
surrounding air temperature of 40°C or lower and in-enclosure wiring.
(Selection example for use mainly in the United States.)
The cable size is that of the cable (XLPE cable) with continuous maximum permissible temperature of 90°C. It assumes a surrounding air
temperature of 40°C or lower and in-enclosure wiring.
(Selection example for use mainly in Europe.
The terminal screw size indicates the size of a terminal screw for R/L1, S/L2, T/L3, U, V, W, P/+, N/-, and a screw for earthing (grounding).
Screw size for earthing (grounding) is indicated in parentheses.
The line voltage drop can be calculated by the following formula:
Line voltage drop [V]=
× wire resistance[mΩ/m] × wiring distance[m] × current[A]
1000
Use a larger diameter cable when the wiring distance is long or when it is desired to decrease the voltage drop (torque
reduction) in the low speed range.
NOTE
• Tighten the terminal screw to the specified torque.
A screw that has been tightened too loosely can cause a short circuit or malfunction.
A screw that has been tightened too tightly can cause a short circuit or malfunction due to the unit breakage.
• Use crimping terminals with insulation sleeves to wire the power supply and motor.
30
INSTALLATION AND WIRING
Main circuit terminals
Total wiring length
 With induction motor
Connect one or more general-purpose motors within the total wiring length 500 m. (The wiring length should be 100 m or
less under vector control.)
Total wiring length
300 m
500 m or less
300 m
300 m+300 m=600 m
When driving a 400 V class motor by the inverter, surge voltages attributable to the wiring constants may occur at the
motor terminals, deteriorating the insulation of the motor. In this case, take one of the following measure.
• Use a "400 V class inverter-driven insulation-enhanced motor" and set Pr.72 PWM frequency selection according to
the wiring length.
Wiring length 100 m or shorter
6 (6 kHz) or lower
Wiring length longer than 100 m
4 (4 kHz) or lower
• If the motor capacity is 280 kW or lower, connect the sine wave filter (MT-BSL/BSC) to the output side.
 With PM motor
Use the wiring length of 100 m or shorter when connecting a PM motor.
Use one PM motor for one inverter. Multiple PM motors cannot be connected to an inverter.
When the wiring length exceeds 50 m for a 400 V class motor driven by an inverter under PM sensorless vector control,
set "9" (6 kHz) or less in Pr.72 PWM frequency selection.
NOTE
• Especially for long-distance wiring, the inverter may be affected by a charging current caused by the stray capacitances of the
wiring, leading to a malfunction of the overcurrent protective function or fast response current limit function or a malfunction or
fault of the equipment connected on the inverter output side. If the fast-response current limit function malfunctions, disable
this function. (For the details of Pr.156 Stall prevention operation selection, refer to the FR-A800 Instruction Manual
(Detailed))
• A sine wave filter (MT-BSL/BSC) can be used under V/F control. Do not use the filters under different control methods.
• For the details of Pr.72 PWM frequency selection, refer to the FR-A800 Instruction Manual (Detailed).
• Refer to page 72 to drive a 400 V class motor by an inverter.
• The carrier frequency is limited during PM sensorless vector control. (Refer to the FR-A800 Instruction Manual (Detailed))
INSTALLATION AND WIRING
31
2
Main circuit terminals
2.5.5
Earthing (grounding) precautions
• Always earth (ground) the motor, the inverter, and the converter unit.
Purpose of earthing (grounding)
Generally, an electrical apparatus has an earth (ground) terminal, which must be connected to the ground before use.
An electrical circuit is usually insulated by an insulating material and encased. However, it is impossible to manufacture an
insulating material that can shut off a leakage current completely, and actually, a slight current flows into the case. The
purpose of earthing (grounding) the case of an electrical apparatus is to prevent operators from getting an electric shock from
this leakage current when touching it.
To avoid the influence of external noises, this earthing (grounding) is important to audio equipment, sensors, computers and
other apparatuses that handle low-level signals or operate very fast.
Earthing (grounding) methods and earthing (grounding) work
As described previously, earthing (grounding) is roughly classified into an electrical shock prevention type and a noiseinfluenced malfunction prevention type. Therefore, these two types should be clearly distinguished, and the following work
must be done to prevent the leakage current having the inverter's high frequency components from entering the malfunction
prevention type earthing (grounding):
• Whenever possible, use the independent earthing (grounding) for the inverter.
If independent earthing (grounding) (I) is not available, use (II) common earthing (grounding) in the figure below where the
inverter is connected with the other equipment at an earthing (grounding) point. Do not use the other equipment's earthing
(grounding) cable to earth (ground) the inverter as shown in (III).
A leakage current containing many high frequency components flows into the earthing (grounding) cables of the inverter
and peripheral devices. Because of this, the inverter must be earthed (grounded) separately from EMI-sensitive devices.
In a high building, it may be effective to use the EMI prevention type earthing (grounding) connecting to an iron structure
frame, and electric shock prevention type earthing (grounding) with the independent earthing (grounding) together.
• Earthing (Grounding) must conform to the requirements of national and local safety regulations and electrical codes.
(NEC section 250, IEC 536 class 1 and other applicable standards).
A neutral-point earthed (grounded) power supply in compliance with EN standard must be used.
• use the thickest possible earthing (grounding) cable. The earthing (grounding) cable should be the size indicated in the
table on page 30.
• The earthing (grounding) point should be as close as possible to the inverter, and the earth (ground) wire length should
be as short as possible.
• Run the earthing (grounding) cable as far away as possible from the I/O wiring of equipment sensitive to noises and run
them in parallel in the minimum distance.
Inverter/
converter
unit
Inverter/
converter
unit
Other
equipment
(I) Independent earthing (grounding).......Good
Inverter/
converter
unit
Other
equipment
(II) Common earthing (grounding).......Good
(III) Common earthing (grounding) cable.......Not allowed
To be compliant with the EU Directive (Low Voltage Directive), refer to page 109.
32
INSTALLATION AND WIRING
Other
equipment
Control circuit
2.6
Control circuit
2.6.1
Details on the control circuit terminals of the
inverter
The input signal function of the terminals in
can be selected by setting Pr.178 to Pr.196 (I/O terminal function
selection).
For the parameter details, refer to the FR-A800 Instruction Manual (Detailed).
Type
Input signal
Terminal
Symbol
Terminal name
Turn ON the STF signal to start forward
rotation and turn it OFF to stop.
Turn ON the STR signal to start reverse
rotation and turn it OFF to stop.
When the STF and
STR signals are turned
ON simultaneously, the
stop command is given.
STF
Forward rotation start
STR
Reverse rotation start
STOP
Start self-holding
selection
Turn ON the STOP signal to self-hold the start signal.
RH
RM
RL
Multi-speed selection
Multi-speed can be selected according to the combination of RH, RM
and RL signals.
Jog mode selection
Turn ON the JOG signal to enable JOG operation (initial setting) and
turn ON the start signal (STF or STR) to start JOG operation.
Pulse train input
Terminal JOG is also used as the pulse train input terminal. To use as
a pulse train input terminal, change the Pr.291 setting.
(maximum input pulse: 100k pulses/s)
JOG
Contact input
Terminal function description
RT
Second function
selection
MRS
(X10)
Output stop
(Inverter operation
enable)
RES
Reset
AU
CS
SD
Terminal 4 input
selection
Selection of
automatic restart
after instantaneous
power failure
Contact input
common (sink)
External transistor
common (source)
24 VDC power supply
common
External transistor
common (sink)
PC
Contact input
common (source)
24 VDC power supply
common
Turn ON the RT signal to enable the second function.
When the second function such as "second torque boost" and "second
V/F (base frequency)" is set, turning ON the RT signal enables the
selected function.
Connect to the terminal RDA of the converter unit (FR-CC2). When
the RDA signal is turned OFF, the inverter output is shut off.
The X10 signal (NC contact) is assigned to the terminal MRS in the
initial setting. Use Pr.599 to change the specification to NO contact.
Use this signal to reset a fault output provided when a protective
function is activated. Turn ON the RES signal for 0.1s or longer, then
turn it OFF.
In the initial setting, reset is always enabled. By setting Pr.75, reset
can be enabled only at an inverter fault occurrence. The inverter
recovers about 1s after the reset is released.
The terminal 4 function is available only when the AU signal is ON
Turning ON the AU signal disables the terminal 2 function.
Rate Specification
Input resistance
4.7 k
Voltage when
contacts are open: 21
to 27 VDC
When contacts are
short-circuited: 4 to 6
mADC
Input resistance 2 k
When contacts are
short-circuited: 8 to 13
mADC
Input resistance
4.7 k
Voltage when
contacts are open: 21
to 27 VDC
When contacts are
short-circuited: 4 to 6
mADC
2
When the CS signal is left ON, the inverter restarts automatically at
power restoration. Note that restart setting is necessary for this
operation. In the initial setting, a restart is disabled.
Common terminal for contact input terminal (sink logic) and terminal
FM
Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a
programmable controller, in the source logic to avoid malfunction by
undesirable current.
Common terminal for the 24 VDC power supply (terminal PC, terminal
+24)
Isolated from terminals 5 and SE.
Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a
programmable controller, in the source logic to avoid malfunction by
undesirable current.
Common terminal for contact input terminal (source logic).
———
Power supply voltage
range 19.2 to 28.8
VDC
Permissible load
current 100 mA
Can be used as a 24 VDC 0.1 A power supply.
INSTALLATION AND WIRING
33
Control circuit
Type
Terminal
Symbol
Terminal name
10E
Frequency setting
power supply
When connecting the frequency setting potentiometer at an initial
status, connect it to the terminal 10.
Change the input specifications of the terminal 2 in Pr.73 when
connecting it to the terminal 10E.
Frequency setting
(voltage)
Inputting 0 to 5 VDC (or 0 to 10 V, 0 to 20 mA) provides the maximum
output frequency at 5 V (10 V, 20 mA) and makes input and output
proportional. Use Pr.73 to switch among input 0 to 5 VDC (initial
setting), 0 to 10 VDC, and 0 to 20 mA. Set the voltage/current input
switch in the ON position to select current input (0 to 20 mA).
Frequency setting
(current)
Inputting 4 to 20 mADC (or 0 to 5 V, 0 to 10 V) provides the maximum
output frequency at 20 mA and makes input and output proportional.
This input signal is valid only when the AU signal is ON (terminal 2
input is invalid). Use Pr.267 to switch among input 4 to 20 mA (initial
setting), 0 to 5 VDC, and 0 to 10 VDC. Set the voltage/current input
switch in the OFF position to select voltage input (0 to 5 V/0 to 10 V).
Use Pr.858 to switch terminal functions.
10
Frequency setting
2
4
Terminal function description
Rate Specification
10 VDC 0.4 V
Permissible load
current 10 mA
5 VDC0.5 V
Permissible load
current 10 mA
When voltage is input:
Input resistance 10
k 1 k
Maximum permissible
voltage 20 VDC
When current is input:
Input resistance 245
 5 
Permissible maximum
current 30 mA
Voltage/current
input switch
switch2
switch1
Power supply input
Thermistor
2
1
Frequency setting
auxiliary
5
Frequency setting
common
Inputting 0 to 5 VDC or 0 to 10 VDC adds this signal to terminal 2 or
4 frequency setting signal. Use Pr.73 to switch between input 0 to 5
VDC and 0 to 10 VDC (initial setting). Use Pr.868 to switch terminal
functions.
Common terminal for frequency setting signal (terminal 2, 1 or 4) and
analog output terminal AM. Do not earth (ground).
4
Input resistance 10
k 1 k
Permissible maximum
voltage 20 VDC
———
10
2
PTC thermistor input
For receiving PTC thermistor outputs.
When PTC thermistor is valid (Pr.561  "9999"), the terminal 2 is not
available for frequency setting.
Applicable PTC
thermistor
specification
Overheat detection
resistance:
0.5 to 30 k
(Set by Pr.561)
+24
24 V external power
supply input
For connecting a 24 V external power supply.
If a 24 V external power supply is connected, power is supplied to the
control circuit while the main power circuit is OFF.
Input voltage 23 to
25.5 VDC
Input current 1.4 A or
less



Set Pr.73, Pr.267, and the voltage/current input switch correctly, then input an analog signal in accordance with the setting.
Applying a voltage with the voltage/current input switch ON (current input is selected) or a current with the switch OFF (voltage input is selected)
could cause component damage of the inverter or analog circuits of output devices. (For the details, refer to the FR-A800 Instruction Manual
(Detailed).)
The sink logic is initially set for the FM-type inverter.
The source logic is initially set for the CA-type inverter.
Relay
Type
Output signal
34
Terminal
Symbol
Terminal name
Terminal function description
A1,
B1,
C1
Relay output 1 (fault
output)
1 changeover contact output that indicates that an inverter's protective
function has been activated and the outputs are stopped.
Fault: discontinuity across B and C (continuity across A and C), Normal:
continuity across Band C (discontinuity across A and C)
A2,
B2,
C2
Relay output 2
1 changeover contact output
INSTALLATION AND WIRING
Rate Specification
Contact capacity 230
VAC 0.3 A (power
factor = 0.4)
30 VDC 0.3 A
Type
Control circuit
Terminal
Symbol
RUN
Terminal function description
Up to frequency
Switched to LOW when the output frequency
is within the set frequency range 10% (initial
value). Switched to HIGH during acceleration/
deceleration and at a stop.
OL
Overload alarm
Switched to LOW when stall prevention is
activated by the stall prevention function.
Switched to HIGH when stall prevention is
canceled.
IPF
Open collector output
No function is assigned in the initial setting.
The function can be assigned setting Pr.192.
FU
Frequency detection
Switched to LOW when the inverter output
frequency is equal to or higher than the preset
detection frequency, and to HIGH when it is
less than the preset detection frequency.
SE
Open collector output
common
Common terminal for terminals RUN, SU, OL, IPF, FU
Fault code (4 bits)
output.
Pulse
For meter
FM

Outputs a selected monitored item (such as
output frequency) among several monitored
items. The signal is not output during an
inverter reset.
The output signal is proportional to the
magnitude of the corresponding monitoring
item.
Analog voltage output
Use Pr.55, Pr.56, and Pr.866 to set full scales
for the monitored output frequency, output
current, and torque.
NPN open
collector output
Analog
AM
CA


Permissible load 24
VDC (maximum 27
VDC) 0.1 A
(The voltage drop is
2.8 V at maximum
while the signal is
ON.)
LOW is when the
open collector output
transistor is ON
(conducted).
HIGH is when the
transistor is OFF (not
conducted).
———
Output item:
Output frequency (initial
setting)
Permissible load
current 2 mA
For full scale
1440 pulses/s
This terminal can be
used for open collector
outputs by setting
Pr.291.
Maximum output
pulse: 50k pulses/s
Permissible load
current: 80 mA
Output item:
Output frequency (initial
setting)
Analog current output

Rate Specification
Switched to LOW when the inverter output frequency is equal to or
higher than the starting frequency (initial value 0.5 Hz). Switched to
HIGH during stop or DC injection brake operation.
Inverter running
SU
Open collector
Terminal name
Output signal 0 to 10
VDC, Permissible
load current 1 mA
(load impedance 10
k or more)
resolution 8 bits
Load impedance 200
 to 450 
Output signal 0 to 20
mADC
Terminal FM is provided in the FM-type inverter.
Terminal CA is provided in the CA-type inverter.
Type
Communication
Terminal
symbol
USB
TXD+
RS-485 terminals
RS-485
—
TXDRXD+
RXDSG
Terminal
name
Terminal function description
PU connector
With the PU connector, communication can be made through RS-485. (For connection on a 1:1 basis
only)
Conforming standard: EIA-485 (RS-485)
Transmission format: Multidrop link
Communication speed: 4800 to 115200 bps
Wiring length: 500 m
Inverter
transmission
terminal
Inverter
reception
terminal
Earthing
(grounding)
The RS-485 terminals enable the communication by RS-485.
Conforming standard: EIA-485 (RS-485)
Transmission format: Multidrop link
Communication speed: 300 to 115200 bps
Overall length: 500 m
USB A
connector
A connector (receptacle)
A USB memory device enables parameter copies and the trace
function.
USB B
connector
Mini B connector (receptacle)
Connected to a personal computer via USB to enable setting,
monitoring, test operations of the inverter by FR Configurator2.
—
Interface: Conforms to USB1.1
(USB2.0 fullspeed compatible)
Transmission speed: 12 Mbps
INSTALLATION AND WIRING
35
2
Control circuit
Safety stop signal
For the safety stop function, refer to page 45.
Terminal
Symbol
Terminal name
Terminal function description
Rate Specification
The terminals S1 and S2 are used for the safety stop input signal for the
safety relay module. The terminals S1 and S2 are used at the same time
(dual channel).
Inverter output is shutoff by shortening/opening between terminals S1
and SIC, or between S2 and SIC.
In the initial status, terminal S1 and S2 are shorted with the terminal PC
by shorting wires. The terminal SIC is shorted with the terminal SD.
Remove the shorting wires and connect the safety relay module when
using the safety stop function.
Input resistance
4.7 k
Input current 4 to 6
mADC (with 24 VDC
input)
S1
Safety stop input
(Channel 1)
S2
Safety stop input
(Channel 2)
SIC
Safety stop input
terminal common
Common terminal for terminals S1 and S2.
———
SO
Safety monitor output
Open collector output
Indicates the safety stop input signal status.
Switched to LOW when the status is other than the internal safety circuit
failure. Switched to HIGH during the internal safety circuit failure status.
LOW is when the open collector output transistor is ON (conducted).
HIGH is when the transistor is OFF (not conducted).
Refer to the Safety stop function instruction manual (BCNA23228-001)
when the signal is switched to HIGH while both terminals S1 and S2 are
open. (Please contact your sales representative for the manual.)
permissible load
24 VDC (27 VDC at
maximum), 0.1 A
(The voltage drop is
3.4 V at maximum
while the signal is ON.)
SOC
Safety monitor output
terminal common
Common terminal for terminal SO.
———
36
INSTALLATION AND WIRING
Control circuit
2.6.2
Details on the control circuit terminals of the
converter unit (FR-CC2)
The input signal function of the terminals in
can be selected by setting Pr.178, Pr.187, Pr.189 to Pr.195 (I/O terminal
function selection).
For the parameter details, refer to the FR-CC2 Instruction Manual.
Type
Input signal
Terminal
Symbol
Contact input
Terminal function description
Reset
Use this signal to reset a fault output provided when a protective function
is activated. Turn ON the RES signal for 0.1 s or longer, then turn it OFF.
In the initial setting, reset is always enabled. By setting Pr.75, reset can
be set enabled only at fault occurrence of the converter unit. The inverter
recovers about 1s after the reset is released.
OH
External thermal
relay input
The external thermal relay input (OH) signal is used when using an
external thermal relay or a thermal protector built into the motor to
protect the motor from overheating.
When the thermal relay is activated, the inverter trips by the external
thermal relay operation (E.OHT).
RDI
Contact input
The function can be assigned by setting Pr.178.
Contact input
common (sink)
Common terminal for contact input terminal (sink logic) and terminal FM
External transistor
common (source)
Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a programmable
controller, in the source logic to avoid malfunction by undesirable
current.
24 VDC power supply
common
Common terminal for the 24 VDC power supply (terminal PC, terminal
+24)
Isolated from terminals 5 and SE.
External transistor
common (sink)
Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a programmable
controller, in the source logic to avoid malfunction by undesirable
current.
Contact input
common (source)
Common terminal for contact input terminal (source logic).
24 VDC power supply
common
Can be used as a 24 VDC 0.1 A power supply.
24 V external power
supply input
For connecting a 24 V external power supply.
If a 24 V external power supply is connected, power is supplied to the
control circuit while the main power circuit is OFF.
RES
SD
PC
Power supply input
Terminal name
+24
Rate Specification
Input resistance
4.7 k
Voltage when
contacts are open: 21
to 27 VDC
When contacts are
short-circuited: 4 to 6
mADC
———
Power supply voltage
range 19.2 to 28.8
VDC
Permissible load
current 100 mA
Input voltage 23 to
25.5 VDC
Input current 1.4 A or
less
INSTALLATION AND WIRING
37
2
Control circuit
Open collector
Relay
Type
Output signal
Terminal
Symbol
Terminal name
Terminal function description
Rate Specification
1 changeover contact output that indicates that the protective function of
the converter unit has been activated and the outputs are stopped.
Fault: discontinuity across B and C (continuity across A and C), Normal:
continuity across Band C (discontinuity across A and C)
Contact capacity 230
VAC 0.3 A (power
factor = 0.4)
30 VDC 0.3 A
A1,
B1,
C1
Relay output 1 (fault
output)
88R,
88S
For manufacturer setting. Do not use.
RDA
Inverter operation
enable (NO contact)
Switched to LOW when the converter unit operation is ready.
Assign the signal to the terminal MRS (X10) of the inverter.
The inverter can be started when the RDA status is LOW.
RDB
Inverter operation
enable (NC contact)
Switched to LOW when a converter unit fault occurs or the converter is
reset.
The inverter can be started when the RDB status is HIGH.
RSO
Inverter reset
Switched to LOW when the converter is reset (RES-ON).
Assign the signal to the terminal RES of the inverter.
The inverter is reset when it is connected with the RSO status LOW.
IPF
Instantaneous power
failure
Switched to LOW when an instantaneous power failure is detected.
FAN
Cooling fan fault
Switched to LOW when a cooling fan fault occurs.
SE
Open collector output
common
Common terminal for terminals RDA, RDB, RSO, IPF, FAN
Connect this terminal to the terminal SD (sink logic) or PC (source logic)
of the inverter.
Permissible load 24
VDC (maximum 27
VDC) 0.1 A
(The voltage drop is
2.8 V at maximum
while the signal is
ON.)
LOW is when the
open collector output
transistor is ON
(conducted).
HIGH is when the
transistor is OFF (not
conducted).
———
Caution
 Do not use the empty terminals (NC) of the control circuit. Doing so may lead to damage of the converter unit
and the inverter.
 Always connect the terminal RDA of the converter unit and the terminal MRS (X10) of the inverter, and the
terminal SE of the converter unit and the terminal SD (terminal PC in the source logic) of the inverter. Not doing
so may lead to damage of the converter unit.
2.6.3
Control logic (sink/source) change
Change the control logic of input signals as necessary.
To change the control logic, change the jumper connector position on the control circuit board.
Connect the jumper connector to the connector pin of the desired control logic.
The control logic of input signals is initially set to the sink logic (SINK) for the FM type inverter.
The control logic of input signals is initially set to the source logic (SOURCE) for the CA type inverter.
(The output signals may be used in either the sink or source logic independently of the jumper connector position.)
SOURCE
SINK
Jumper connector
For sink logic
NOTE
• Make sure that the jumper connector is installed correctly.
• Never change the control logic while power is ON.
38
INSTALLATION AND WIRING
Control circuit
Sink logic and source logic
• In the sink logic, a signal switches ON when a current flows from the corresponding signal input terminal.
Terminal SD is common to the contact input signals. Terminal SE is common to the open collector output signals.
• In the source logic, a signal switches ON when a current flows into the corresponding signal input terminal.
Terminal PC is common to the contact input signals. Terminal SE is common to the open collector output signals.
Current flow concerning the input/output signal
when source logic is selected
Current flow concerning the input/output signal
when sink logic is selected
Source logic
Sink logic
PC
Current
STF
STR
Sink
connector
R
Current
STF
R
STR
Source
connector
R
R
SD
Inverter
DC input (sink type)
<Example: QX40>
RUN
TB1
Inverter
DC input (source type)
<Example: QX80>
TB1
RUN
R
R
R
SE
-
R
+ TB17
SE
- TB18
+
24VDC
24VDC
Current flow
Current flow
• When using an external power supply for transistor output
Sink logic
Source logic
Use the terminal PC as a common terminal, and perform
Use the terminal SD as a common terminal, and perform
wiring as shown below. (Do not connect terminal SD of the
wiring as shown below. (Do not connect terminal PC of the
inverter with the terminal 0V of the external power supply.
inverter with the terminal +24 V of the external power
When using terminals PC-SD as a 24 VDC power supply,
supply. When using terminals PC-SD as a 24 VDC power
do not install an external power supply in parallel with the
supply, do not install an external power supply in parallel
inverter. Doing so may cause a malfunction in the inverter
with the inverter. Doing so may cause a malfunction in the
due to undesirable currents.)
inverter due to undesirable currents.)
Inverter
QY40P type transistor
output unit
TB1 STF
PC
24VDC
(SD)
TB1
STF
TB2
STR
Constant
voltage
circuit
PC
TB18
24VDC SD
Current flow
Constant
voltage
circuit
Fuse
TB17
TB18
24VDC
TB2 STR
TB17
2
Inverter
QY80 type transistor
output unit
24VDC
(SD)
SD
Current flow
INSTALLATION AND WIRING
39
Control circuit
2.6.4
Wiring of inverter control circuit
Control circuit terminal layout
2
5
∗1
1 F/C +24 SD So SOC SD SIC S1 S2 PC
4
AM 5 10E 10 SE SE RUN SU IPF OL FU
∗4




A1
B1
C1
A2
B2
C2
PC RL RM RH RT AU STP MRS RES SD SD STF STR JOG CS
∗2 (X10)∗3
This terminal operates as the terminal FM for the FM type, and as the terminal CA for the CA type.
Represents the terminal STOP.
The X10 signal is assigned in the initial setting.
No signal is assigned in the initial setting.
Wiring method
• Power supply connection
For the control circuit wiring, strip off the sheath of a cable, and use it with a blade terminal. For a single wire, strip off the
sheath of the wire and apply directly.
Insert the blade terminal or the single wire into a socket of the terminal.
(1) Strip off the sheath for the below length. If the length of the sheath peeled is too long, a short circuit may occur with
neighboring wires. If the length is too short, wires might come off.
Wire the stripped cable after twisting it to prevent it from becoming loose. In addition, do not solder it.
Cable sheath stripping length
10 mm
(2) Crimp the blade terminal.
Insert wires to a blade terminal, and check that the wires come out for about 0 to 0.5 mm from a sleeve.
Check the condition of the blade terminal after crimping. Do not use a blade terminal of which the crimping is inappropriate,
or the face is damaged.
Unstranded
wires
ire
W
ve
ee
Sl
m
.5m
h)
inc
02
(0.
o0
0t
Damaged
Crumpled tip
Wires are not inserted
into the sleeve
• Blade terminals commercially available (as of February 2012)
Phoenix Contact Co., Ltd.
Cable gauge
(mm2)
Blade terminal model
With insulation sleeve
Without insulation sleeve
For UL wire 
0.3
AI 0, 5-10WH
-
-
0.5
AI 0, 5-10WH
-
AI 0, 5-10WH-GB
0.75
AI 0, 75-10GY
A 0, 75-10
AI 0, 75-10GY-GB
1
AI 1-10RD
A 1-10
AI 1-10RD/1000GB
1.25, 1.5
AI 1, 5-10BK
A 1, 5-10
AI 1, 5-10BK/1000GB
0.75 (for two wires)
AI-TWIN 2  0, 75-10GY
-
-


40
A blade terminal with an insulation sleeve compatible with the MTW wire which has a thick wire insulation.
Applicable for the terminals A1, B1, C1, A2, B2, and C2 only.
INSTALLATION AND WIRING
Crimping tool
name
CRIMPFOX 6
Control circuit
NICHIFU Co.,Ltd.
Cable gauge
(mm2)
0.3 to 0.75
Blade terminal
product number
BT 0.75-11
Insulation
product number
VC 0.75
Crimping tool
product number
NH 69
(3) Insert the wires into a socket.
When using a single wire or stranded wires without a blade terminal, push the
open/close button all the way down with a flathead screwdriver, and insert the
wire.
Open/close button
Flathead screwdriver
NOTE
• When using stranded wires without a blade terminal, twist enough to avoid short circuit with a nearby terminals or wires.
• Never change the control logic while power is ON.
• Wire removal
Pull the wire while pushing the open/close button all
the way down firmly with a flathead screwdriver.
NOTE
Open/close button
• Pulling out the wire forcefully without pushing the open/close
button all the way down may damage the terminal block.
• Use a small flathead screwdriver (tip thickness: 0.4 mm/tip
Flathead screwdriver
width: 2.5 mm).
If a flathead screwdriver with a narrow tip is used, terminal
block may be damaged.
Commercially available products (as of February 2012)
Name
Driver
Model
Manufacturer
SZF
0- 0,4  2,5
Phoenix Contact Co., Ltd.
Contact Co., Ltd.
• Place the flathead screwdriver vertical to the open/close
button. In case the blade tip slips, it may cause an inverter
damage or injury.
Common terminals of the control circuit (SD, PC, 5, SE)
• Terminals SD (sink logic), PC (source logic), 5, and SE are common terminals (0V) for I/O signals. (All common terminals
are isolated from each other.) Do not earth (ground) these terminals. Avoid connecting the terminal SD (sink logic) with 5,
the terminal PC (source logic) with 5, and the terminal SE with 5.
• In the sink logic, terminal SD is a common terminal for the contact input terminals (STF, STR, STOP, RH, RM, RL, JOG, RT,
MRS, RES, AU, CS) and the pulse train output terminal (FM). The open collector circuit is isolated from the internal
control circuit by photocoupler.
• In the source logic, terminal PC is a common terminal for the contact input terminals (STF, STR, STOP, RH, RM, RL, JOG,
RT, MRS, RES, AU, CS). The open collector circuit is isolated from the internal control circuit by photocoupler.
• Terminal 5 is a common terminal for the frequency setting terminals (2, 1 or 4) and the analog output terminals (AM, CA).
It should be protected from external noise using a shielded or twisted cable.
• Terminal SE is a common terminal for the open collector output terminals (RUN, SU, OL, IPF, FU). The contact input circuit
is isolated from the internal control circuit by photocoupler.


Terminal FM is provided in the FM-type inverter.
Terminal CA is provided in the CA-type inverter.
INSTALLATION AND WIRING
41
2
Control circuit
Signal inputs by contactless switches
The contact input terminals of the inverter (STF, STR, STOP, RH, RM, RL, JOG, RT, MRS, RES, AU, CS) can be controlled
using a transistor instead of a contact switch as shown below.
Inverter
+24V
PC
+24V
STF, etc
Inverter
STF, etc
SD
External signal input using transistor
(sink logic)
2.6.5
R
External signal input using transistor
(source logic)
Wiring precautions
• It is recommended to use a cable of 0.75 mm2 for the connection to the control circuit terminals.
• The wiring length should be 30 m (200 m for the terminal FM) at the
maximum.
• Use two or more parallel micro-signal contacts or twin contacts to prevent
contact faults when using contact inputs since the control circuit input signals
are micro-currents.
• To suppress EMI, use shielded or twisted cables for the control circuit
Micro signal contacts
Twin contacts
terminals and run them away from the main and power circuits (including the 200V relay sequence circuit). For the cables
connected to the control circuit terminals, connect their shields to the common terminal of the connected control circuit
terminal. When connecting an external power supply to the terminal PC, however, connect the shield of the power supply
cable to the negative side of the external power supply. Do not directly earth (ground) the shield to the enclosure, etc.
• Do not apply a voltage to the contact input terminals (STF, etc.) of the control circuit.
• Always apply a voltage to the fault output terminals (A1, B1, C1, A2, B2, C2) via a relay coil, lamp, etc.
• Separate the wiring of the control circuit away from the wiring of the main circuit.
Make cuts in rubber bush of the inverter side and lead the wires through.
<Wiring example>
Rubber bush
(viewed from inside)
Make cuts along the lines on
the inside with a cutter knife
42
INSTALLATION AND WIRING
Control circuit
2.6.6
When using separate power supplies for the
control circuit and the main circuit
Cable size for the control circuit power supply (terminals R1/L11 and S1/
L21)
• Terminal screw size: M4
• Cable gauge: 0.75 mm2 to 2 mm2
• Tightening torque: 1.5 N·m
Connected to
When a fault occurs, opening of the electromagnetic contactor (MC) on the inverter power supply side results in power loss in
the control circuit, disabling the fault output signal retention. Terminals R1/L11 and S1/L21 are provided to hold a fault signal.
In this case, connect the power supply terminals R1/L11 and S1/L21 of the control circuit to the input side of the MC.
The terminals R1/L11 and S1/L21 are connected to the terminals P/+ and N/- with a jumper respectively. Do not connect the
power cable to incorrect terminals. Doing so may damage the inverter.
<Connection diagram>
Converter unit
MC
Inverter
R/L1
P/+
P/+
S/L2
N/-
N/-
T/L3
R1/L11
S1/L21
Remove the jumper
(c)
Power supply terminal block
for the control circuit
Power supply terminal block
for the control circuit
R1/L11
S1/L21
(a)
(b)
(d)
(a)
(b)
(c)
(d)
2
Remove the upper screws.
Remove the lower screws.
Pull the jumper toward you to remove.
Connect the separate power supply cable for the control circuit to the upper terminals (R1/L11, S1/L21).
NOTE
• When using separate power supplies, always remove the jumpers from terminals R1/L11 and S1/L21. The inverter may be
damaged if the jumpers are not removed.
• The voltage should be the same as that of the main control circuit when the control circuit power is supplied from other than
the input side of the MC.
• The power capacity necessary when separate power is supplied from R1/L11 and S1/L21 is 80 VA.
• If the main circuit power is switched OFF (for 0.1 s or more) then ON again, the inverter is reset and a fault output will not be
held.
INSTALLATION AND WIRING
43
Control circuit
2.6.7
When supplying 24 V external power to the
control circuit
Connect the 24 V external power supply across terminals +24 and SD. The 24 V external power supply enables I/O
terminal ON/OFF operation, operation panel displays, control functions, and communication during communication
operation even during power-OFF of inverter's main circuit power supply. When the main circuit power supply is turned
ON, the power supply changes from the 24 V external power supply to the main circuit power supply.
Specification of the applied 24 V external power supply
Item
Rate Specification
Input voltage
DC23 to 25.5 V
Input current
1.4 A or lower
Commercially available products (as of October 2013)
Model
Manufacturer
S8JX-N05024C 
Specifications: Capacity 50 W, output voltage 24 VDC, output current 2.1 A
Installation method: Front installation with cover
or
OMRON Corporation
S8VS-06024 
Specifications: Capacity 60 W, output voltage 24 VDC, output current 2.5 A
Installation method: DIN rail installation

For the latest information about OMRON power supply, contact OMRON corporation.
Starting and stopping the 24 V external power supply operation
• Supplying 24 V external power while the main circuit power is OFF starts the 24 V external power supply operation.
Likewise, turning OFF the main circuit power while supplying 24 V external power starts the 24 V external power supply
operation.
• Turning ON the main circuit power stops the 24 V external power supply operation and enables the normal operation.
NOTE
• When the 24 V external power is supplied while the main circuit power supply is OFF, the inverter operation is disabled.
• In the initial setting, when the main power supply is turned ON during the 24 V external power supply operation, a reset is
performed in the inverter, then the power supply changes to the main circuit power supply. (The reset can be disabled using
Pr.30.)
Confirming the 24 V external power supply input
• During the 24 V external power supply operation, "EV" flickers on the operation panel. The alarm lamp also flickers. Thus,
the 24 V external power supply operation can be confirmed even when the operation panel is removed.
Flickering
Flickering
POWER ALARM
• During the 24 V external power supply operation, the 24 V external power supply operation signal (EV) is output. To use the
EV signal, set "68 (positive logic) or 168 (negative logic)" in one of Pr.190 to Pr.196 (output terminal function selection)
to assign function to an output terminal.
44
INSTALLATION AND WIRING
Control circuit
Operation while the 24 V external power is supplied
• Faults history and parameters can be read and parameters can be written (when the parameter write from the operation
panel is enabled) using the operation panel keys.
• The safety stop function is disabled during the 24 V external power supply operation.
• During the 24 V external power supply operation, monitored items and signals related to inputs to main circuit power supply,
such as output current, converter output voltage, and IPF signal, are invalid.
• The alarms, which have occured when the main circuit power supply is ON, continue to be output after the power supply is
changed to the 24 V external power supply. Perform the inverter reset or turn OFF then ON the power to reset the faults.
• The retry function is invalid for all alarms during the 24 V external power supply.
• The output data is retained when "1 or 11" is set in Pr.495 Remote output selection.
NOTE
• Inrush current equal to or higher than the 24 V external power supply specification may flow at power-ON. Confirm that the
power supply and other devices are not affected by the inrush current and the voltage drop caused by it. Depending on the
power supply, the inrush current protection may be activated to disable the power supply. Select the power supply and
capacity carefully.
• When the wiring length between the external power supply and the inverter is long, the voltage often drops. Select the
appropriate wiring size and length to keep the voltage in the rated input voltage range.
• In a serial connection of several inverters, the current increases when it flows through the inverter wiring near the power
supply. The increase of the current causes voltage to drop further. Use the inverter after confirming that the input voltage of
each converter unit is within the rated input voltage range. Depending on the power supply, the inrush current protection may
be activated to disable the power supply. Select the power supply and capacity carefully.
• "E.SAF" or "E.P24" may appear when the start-up time of the 24 V power supply is too long (less than 1.5 V/s) in the 24 V
external power supply operation.
• "E.P24" may appear when the 24 V external power supply input voltage is low. Check the external power supply input.
• Do not touch the control circuit terminal block (circuit board) during the 24 V power supply operation (when conducted).
Otherwise you may get an electric shock or burn.
2.6.8
Safety stop function
Function description
The terminals related to the safety stop function are shown below.
Terminal
symbol
Terminal function description
S1 
For input of the safety stop channel 1.
S2 
For input of the safety stop channel 2.
SIC 
Common terminal for terminals S1 and S2.
SO
Outputs when an alarm or failure is detected.
The signal is output when no internal safety circuit failure exists.
SOC
Open collector output (terminal SO) common


Between S1 and SIC, S2 and SIC
Open: In safety stop mode
Short: Other than the safety stop mode.
OFF: Internal safety circuit failure
ON: No internal safety circuit failure
2
In the initial status, terminals S1 and PC, S2 and PC, and SIC and SD are respectively shorted with shorting wires. To use the safety stop
function, remove all the shorting wires, and then connect to the safety relay module as shown in the connection diagram.
At an internal safety circuit failure, the operation panel displays one of the faults shown on the next page.
NOTE
• Use the terminal SO to output a fault and to prevent restarting of the inverter. The signal cannot be used as safety stop input
terminal to other devices.
INSTALLATION AND WIRING
45
Control circuit
Connection diagram
To prevent restart at fault occurrence, connect terminals SO and SOC to the reset button, which are the feedback input
terminals of the safety relay module.
FR-A800
R/L1 S/L2 T/L3
SO
Logic
SOC
IGBTs
+24V
PC
Fuse
ASIC
CPU
Gate
Driver
Gate
Driver
RESET
G
S2
G
S1
Emergency
stop button
SIC
SD
Safety relay module
/ Safety programmable controller
U V W
M
Safety stop function operation
Input
power
Input signal
S1-SIC S2-SIC
OFF
ON
-
-
Shorted
Shorted
Open
Open
Shorted
Open
Open
Shorted
Internal safety
circuit failure
Without
With
Without
With
N/A
N/A
Output signal
SO 
OFF
ON
OFF
ON
OFF
OFF
OFF
Inverter running status
Output shutoff
Drive enabled
Output shutoff
Output shutoff
Output shutoff
Output shutoff
Output shutoff
(Safe state)
(Safe state)
(Safe state)
(Safe state)
(Safe state)
(Safe state)
N/A denotes a condition where circuit fault does not apply.



At an internal safety circuit failure, the operation panel displays one of the fault shown in the following table.
SA is displayed when both of the S1 and S2 signals are in open status and no internal safety circuit failure exists.
ON: Transistor used for an open collector output is conducted.
OFF: Transistor used for an open collector output is not conducted.
Internal safety circuit failure
At an internal safety circuit failure, the terminal SO turns OFF.
The following faults can cause the internal safety circuit failure (terminal SO-OFF).
Fault record
Option fault
Communication option fault
Parameter storage device fault
Retry count excess
Parameter storage device fault
Operation panel power supply short circuit
RS-485 terminals power supply short circuit
24 VDC power fault
Safety circuit fault
Operation panel
indication
E.OPT
E.OP1
E.PE
E.RET
E.PE2
E.CTE
E.P24
E.SAF
Fault record
Overspeed occurrence
Speed deviation excess detection
Signal loss detection
Excessive position fault
Brake sequence fault
Encoder phase fault
CPU fault
Internal circuit fault
For more details, refer to the Safety Stop Function Instruction Manual (BCN-A23228-001).
Find a PDF copy of this manual in the CD-ROM enclosed with the product.
It is also can be downloaded from the Mitsubishi Electric FA Global Website.
http://www.mitsubishielectric.co.jp/fa/
46
INSTALLATION AND WIRING
Operation panel
indication
E.OS
E.OSD
E.ECT
E.OD
E.MB1 to E.MB7
E.EP
E.CPU
E.5 to E.7
E.13
Communication connectors and terminals
2.7
Communication connectors and terminals
2.7.1
PU connector
Mounting the operation panel (FR-DU08) or parameter unit (FR-PU07) on
the enclosure surface
• Having an operation panel (FR-DU08) or a parameter unit (FR-PU07) on the enclosure surface is convenient. With a
connection cable, the operation panel (FR-DU08) or the parameter unit (FR-PU07) can be mounted to the enclosure
surface and connected to the inverter.
Use the option FR-CB2[ ], or connectors and cables available on the market.
(To install the operation panel (FR-DU08), the optional connector (FR-ADP) is required.) )
Securely insert one end of the connection cable until the stoppers are fixed.
Parameter unit connection cable
(FR-CB2[ ])(option)
Parameter unit (FR-PU07)
(option)
Operation panel (FR-DU08)
STF FWD PU
Operation panel connection connector
(FR-ADP)(option)
NOTE
• Refer to the following table when fabricating the cable on the user side. Keep the total cable length within 20 m.
• Commercially available products (as of February 2012)
Name
Model
Manufacturer
Communication cable
SGLPEV-T (Cat5e/300 m)
24AWG  4P
Mitsubishi Cable Industries, Ltd.
RJ-45 connector
5-554720-3
Tyco Electronics
2
Communication operation
• Using the PU connector enables communication operation from a personal computer, etc. When the PU connector is
connected with a personal, FA or other computer by a communication cable, a user program can run to monitor the inverter
or read and write parameters.
Communication can be performed with the Mitsubishi inverter protocol (computer link operation).
(For details, refer to the FR-A800 Instruction Manual (Detailed).)
INSTALLATION AND WIRING
47
Communication connectors and terminals
2.7.2
USB connector
USB host
(A connector)
Communication status indicator (LED)
Place a flathead screwdriver,
etc. in a slot and push up the
cover to open.
USB device
(Mini B connector)
USB host communication
Interface
Transmission speed
Wiring length
Connector
(Format)
Compatible
Capacity
USB memory
Encryption function
Conforms to USB1.1
12 Mbps
Maximum 5 m
USB A connector (receptacle)
FAT32
1 GB or more (used in the recorder mode of the trace function)
Not available
• Different inverter data can be saved in a USB memory device.
The USB host communication enables the following functions.
Function
Description
Parameter copy
• Copies the parameter setting from the inverter to the USB memory device. A maximum of 99 parameter setting
files can be saved in a USB memory device.
• The parameter setting data copied in the USB memory device can be copied to other inverters. This function is
useful in backing up the parameter setting or for sharing the parameter setting among multiple inverters.
• The parameter setting data copied in the USB memory device can be saved in a personal computer and edited
in FR Configurator 2.
Trace
• The monitored data and output status of the signals can be saved in a USB memory device.
• The saved data can be imported to FR Configurator2 to diagnose the operating status of the inverter.
PLC function data
copy
• This function copies the PLC function project data to a USB memory device when the PLC function is used.
• The PLC function project data copied in the USB memory device can be copied to other inverters.
• This function is useful in backing up the parameter setting and for allowing multiple inverters to operate by the
same sequence programs.
• When the inverter recognizes the USB memory device without any problem,
is briefly displayed on the
operation panel.
• When the USB memory device is removed,
is briefly displayed on the operation panel.
• The operating status of the USB host can be checked on the LED display of the inverter.
LED display
status
Operating status
OFF
No USB connection.
ON
The communication is established between the inverter and the USB device.
Flickering rapidly
The USB memory device is being accessed. (Do not remove the USB memory device.)
Flickering slowly
Error in the USB connection.
• When a device such as a USB battery charger is connected to the USB connector and an excessive current (500 mA or
more) flows, USB host error
(UF warning) is displayed on the operation panel.
• If a UF warning occurs, disconnect the USB device and set Pr.1049 = "1" to cancel the USB error. (The UF warning can
also be canceled by resetting the inverter power or resetting with the RES signal.)
NOTE
• Do not connect devices other than a USB memory device to the inverter.
• If a USB device is connected to the inverter via a USB hub, the inverter cannot recognize the USB memory device properly.
• For the details of usage, refer to the FR-A800 Instruction Manual (Detailed).
48
INSTALLATION AND WIRING
Communication connectors and terminals
USB device communication
A USB (Ver. 1.1) cable connects the inverter with a personal computer.
Parameter setting and monitoring can be performed by FR Configurator 2.
Interface
Transmission speed
Wiring length
Connector
Power supply
Conforms to USB1.1
12 Mbps
Maximum 5 m
USB mini B connector (receptacle)
Self-powered
NOTE
• For the details of FR Configurator2, refer to the Instruction Manual of FR Configurator2.
2.7.3
RS-485 terminal block
Communication operation
Conforming standard
Transmission format
Communication speed
Overall length
Connection cable
EIA-485 (RS-485)
Multidrop link
115200 bps maximum
500 m
Twisted pair cable (4 pairs)
The RS-485 terminals enables communication operation from a personal computer, etc. When the PU connector is connected
with a personal, FA or other computer by a communication cable, a user program can run to monitor the inverter or read and
write parameters.
Communication can be performed with the Mitsubishi inverter protocol (computer link operation) and Modbus-RTU protocol.
(For details, refer to the FR-A800 Instruction Manual (Detailed).)
Terminating resistor switch
Initially-set to "OPEN".
Set only the terminating resistor switch of
the remotest inverter to the "100Ω" position.
P5S
(VCC)
SG SDA1 SDB1 RDA1 RDB1
(GND) (TXD1+)
(TXD1-) (RXD1+) (RXD1-)
OPEN
100Ω
VCC GND
+ TXD -
+ RXD -
VCC GND
+ TXD -
+ RXD -
P5S
(VCC)
SG
2
SDA2 SDB2 RDA2 RDB2
(GND) (TXD2+) (TXD2-) (RXD2+) (RXD2-)
NOTE
• To avoid malfunction, keep the RS-485 terminal wires away from the control circuit board.
• For wiring of the RS-485 terminals used with a plug-in option, lead the wires on the left side of the plug-in option.
INSTALLATION AND WIRING
49
Connection of motor with encoder (vector control)
2.8
Connection of motor with encoder (vector
control)
Using an encoder-equipped motor together with the plug-in option FR-A8AP enables speed, torque, and positioning control
operations under orientation control, encoder feedback control, and full-scale vector control.
Appearance and parts name of FR-A8AP
Front view
(a)
Rear view
(a)
Terminal layout
(a)
(h)
(d)
(f)
1
2
O
N
PA1
PB1
PZ1
PG
PG
PIN
SW2
(c)
(e)
1
2
3
4
O
N
SW3
SW1
PA2
PB2
PZ2
SD
SD
PO
PIN and PO
are not used.
(a)
(a)
(a)
(b)
Symbol
Name
Refer
to page
Description
a
Mounting hole
Used for installation to the inverter.
b
Terminal block
Connected with the encoder.
—
53
c
Encoder type selection switch (SW3)
Switches the encoder type (differential line driver/complementary).
51
d
CON2 connector
Not used.
—
e
Terminating resistor selection switch
(SW1)
Switches ON or OFF the internal terminating resistor.
51
f
Switch for manufacturer setting
(SW2)
Do not change from the initially-set status. (Switches 1 and 2 are OFF
g
Connector
Connected to the option connector of the inverter.
9
h
LED for manufacturer check
Not used.
—
1
2
O
N
.)
—
Terminals of the FR-A8AP
Terminal
symbol
PA1
Terminal name
Encoder A-phase signal input terminal
PA2
Encoder A-phase inverse signal input terminal
PB1
Encoder B-phase signal input terminal
PB2
Encoder B-phase inverse signal input terminal
PZ1
Encoder Z-phase signal input terminal
PZ2
Encoder Z-phase inverse signal input terminal
PG
Encoder power supply (positive side) input terminal
SD
Encoder power supply ground terminal
PIN
PO
Description
A-, B- and Z-phase signals are input from the encoder.
Input terminal for the encoder power supply.
Connect the external power supply (5 V, 12 V, 15 V, 24
V) and the encoder power cable. When the encoder
output is the differential line driver type, only 5 V can
be input. Make the voltage of the external power
supply same as the encoder output voltage. (Check
the encoder specification.)
Not used.
NOTE
• When the encoder's output voltage differs from its input power supply voltage, the signal loss detection (E.ECT) may occur.
• Incorrect wiring or faulty setting to the encoder will cause a fault such as an overcurrent (E.OC[ ]) and an inverter
overload (E.THT).
Correctly perform the encoder wiring and setting.
50
INSTALLATION AND WIRING
Connection of motor with encoder (vector control)
Switches of the FR-A8AP
• Encoder type selection switch (SW3)
Differential line
driver (initial status)
Selects either the differential line driver or complementary setting.
It is initially set to the differential line driver. Switch its position according to the
1
2
O
N
SW2
output circuit.
SW1
1
2
3
4
O
N
SW3
• Terminating resistor selection switch (SW1)
Selects ON/OFF of the internal terminating resistor.
Set the switch to ON (initial status) when an encoder output type is
Complementary
Internal terminating
resistor-ON
(initial status)
differential line driver, and set to OFF when complementary.
1
2
O
N
SW2
ON: with internal terminating resistor (initial status)
NOTE
1
2
3
4
O
N
SW3
Internal terminating
resistor-OFF
SW1
OFF: without internal terminating resistor
• Set all switches to the same setting (ON/OFF).
• Set the switch "OFF" when sharing an encoder with another unit (NC
(computerized numerical controller), etc.) having a terminating resistor
under the differential line driver setting.
• Prepare an encoder's power supply (5 V/12 V/15 V/24 V) according to the encoder's output voltage. When the encoder output
is the differential line driver type, only 5 V can be input.
• The SW2 switch is for manufacturer setting. Do not change the setting.
2
INSTALLATION AND WIRING
51
Connection of motor with encoder (vector control)
Encoder cable
FR-JCBL
FR-V7CBL
F-DPEVSB 12P 0.2 mm2
Approx. 140 mm
Earth cable

Earth cable
60mm
D/MS3057-12A
11mm
11 mm
F-DPEVSB 12P 0.2 mm2 D/MS3057-12A
Approx. 140 mm
60mm
L
D/MS3106B20-29S
Model
5
FR-JCBL15
FR-JCBL30
FR-A800
(FR-A8AP)
included.
PG
SD
15
FR-V7CBL15
15
30
FR-V7CBL30
30
Positioning keyway
M A B
N
C
L
P D
T
K
E
S
R
J
H G F
H
K

PLG
PA1
PA2
PB1
PB2
PZ1
PZ2
A
B
C
D
F
G
PG
SD
S
R
D/MS3106B20-29S
(As viewed from wiring side)
2 mm2
Length L (m)
5
FR-A800
(FR-A8AP)
C
R
A
N
B
P
Model
FR-V7CBL5
PLG
PA1
PA2
PB1
PB2
PZ1
PZ2
• Shield earthing P-clip is
Length L (m)
FR-JCBL5
D/MS3106B20-29S
L
Positioning keyway
M A B
N
C
L
P D
T
K
E
S
R
J
F
H G
D/MS3106B20-29S
(As viewed from wiring side)
2 mm2
As the terminal block of the FR-A8AP is an insertion type, cables need to be treated. (Refer to the following description.)
• As the terminal block of the FR-A8AP is an insertion type, cables need to be treated when the encoder cables of the
inverter are crimping terminals. Cut the crimping terminal of the encoder cable and strip its sheath to make its cable wires
loose.
Also, treat the shielding wires of the shielded twisted pair cable to ensure that they will not contact conductive areas.
Wire the stripped cable after twisting it to prevent it from becoming loose. In addition, do not solder it.
Cable stripping size
5mm (0.2 inches)
NOTE
• Information on blade terminals
Commercially available products (as of February 2012)
Phoenix Contact Co., Ltd.
Terminal screw
size
M2
Cable gauge
(mm2)
0.3, 0.5
Blade terminal model
(With insulation sleeve)
AI 0,5-6WH
(Without insulation sleeve)
A 0,5-6
Crimping tool
name
CRIMPFOX 6
NICHIFU Co.,Ltd.
Terminal screw
size
M2
Cable gauge
(mm2)
0.3 to 0.75
Blade terminal product
number
BT 0.75-7
• When using a blade terminal (without insulation sleeve),
take caution that the twisted wires do not come out.
52
INSTALLATION AND WIRING
Insulation product
number
VC 0.75
Crimping tool
product number
NH 69
Connection of motor with encoder (vector control)
• Connection terminal compatibility table
Encoder cable
FR-A8AP terminal
FR-V7CBL
FR-JCBL
PA1
PA
PA2
Do not connect anything to this.
PA
PAR
PB1
PB
PB
PB2
Do not connect anything to this.
PBR
PZ1
PZ
PZ
PZ2
Do not connect anything to this.
PZR
PG
PG
5E
SD
SD
AG2
Wiring example
• Speed control
Vector control dedicated motor,
12 V complementary
Standard motor with encoder, 5 V differential line driver
Motor with
encoder
Inverter
To converter unit
Forward rotation start
Reverse rotation start
Contact input common
Frequency command 3
2
Frequency setting
potentiometer
1/2W1kΩ 1
U
V
W
P/+
N/-
STF
FR-A8AP
STR
PA1
Differential
2
A
PB2
N
1
H
SD
K
SD
∗6
OFF
∗4
∗2
P
PG
PG
PLG
B
PZ1
PZ2
Terminating
resistor ON
Torque limit
(+)
command (-)
(±10V)
FR-A8AP
PA1
R
PB1
Complementary
5
IM
Earth
(Ground)
C ∗1
PA2
SD
10
U
V
W
E
Vector control
dedicated motor
U
V
W
Inverter
U
V
W
E
Earth
(Ground)
A
PA2
B
PB1
C
PB2
D
Differential PZ1
F
PZ2
G
Complementary
PG
S
Terminating
resistor
ON
SD
R
PG
∗6
∗1
PLG
∗2
∗3
SD
∗4
IM
(+)
12VDC power
(-) supply ∗5
OFF
∗3
(+)
(-) 5VDC power supply
∗5
• Torque control
Vector control dedicated motor,
12 V complementary
Standard motor with encoder (SF-JR), 5 V differential line driver
Motor with
encoder
Inverter
To converter unit
Forward rotation start
Reverse rotation start
Contact input common
Speed limit command
Frequency setting
potentiometer
1/2W1kΩ
Torque
(+)
command (-)
(±10V)
2
1
STF
FR-A8AP
STR
PA1
Differential
2
5
U
V
W
E
Terminating
resistor ON
A
PB2
N
1
P
PG
H
SD
K
SD
OFF
∗4
B
PZ1
PZ2
PG
∗6
IM
U
V
W
FR-A8AP
PA1
R
PB1
Complementary
Inverter
Earth
(Ground)
C ∗1
PA2
SD
10
3
U
V
W
P/+
N/-
Vector control
dedicated motor
PLG
∗2
U
V
W
E
A
PA2
B
PB1
C
PB2
D
F
PZ2
G
Complementary
PG
S
Terminating
resistor
ON
SD
R
PG
∗1
PLG
∗2
∗3
SD
∗6
2
Earth
(Ground)
Differential PZ1
∗4
IM
(+)
12VDC power
(-) supply ∗5
OFF
∗3
(+)
(-) 5VDC power supply
∗5
INSTALLATION AND WIRING
53
Connection of motor with encoder (vector control)
• Position control
Vector control dedicated motor, 12 V complementary
Vector control
dedicated motor
Positioning unit
MELSEC-Q QD75P[]N/QD75P[]
MELSEC-L LD75P[]
To converter unit
P/+
N/-
U
V
W
Inverter
FLS
RLS
U
V
W
E
IM
Earth
(ground)
DOG
STOP
Forward stroke end
Reverse stroke end
Pre-excitation/servo on
Clear signal
CLEAR
Pulse train
PULSE F
Sign signal
24VDC power supply
PULSE R
STF
STR
FR-A8AP
PA1
LX ∗7
PA2
B
CLR ∗7
PB1
C
PB2
D
PZ1
PZ2
F
JOG ∗8
NP ∗7
CLRCOM
PC
PULSE COM
SE
RDYCOM
COM
READY
Preparation ready signal
RDY ∗9
5
Differential
line driver
A
G
Complementary
PG
S
Terminating
resistor
ON
SD
R
PLG
∗2
PG
SD
∗4
∗1
∗6
∗3
(+)
12VDC
(-) power supply ∗5
OFF
Torque limit command (+)
(±10V) (-)









54
1
The pin number differs according to the encoder used.
Speed, control, torque control, and position control by pulse train input are available with or without the Z-phase being
connected.
Connect the encoder so that there is no looseness between the motor and motor shaft. Speed ratio must be 1:1.
Earth (ground) the shield of the encoder cable to the enclosure using a tool such as a P-clip. (Refer to page 55.)
For the complementary, set the terminating resistor selection switch to OFF position. (Refer to page 51.)
A separate power supply of 5 V / 12 V / 15 V / 24 V is necessary according to the encoder power specification.
When the encoder output is the differential line driver type, only 5 V can be input.
Make the voltage of the external power supply the same as the encoder output voltage, and connect the external
power supply between PG and SD.
For terminal compatibility of the FR-JCBL, FR-V7CBL, and FR-A8AP, refer to page 53.
Assign the function using Pr.178 to Pr.184, Pr.187 to Pr.189 (input terminal function selection).
When position control is selected, terminal JOG function is invalid and simple position pulse train input terminal
becomes valid.
Assign the function using Pr.190 to Pr.194 (output terminal function selection).
INSTALLATION AND WIRING
Connection of motor with encoder (vector control)
Instructions for encoder cable wiring
• Use shielded twisted pair cables (0.2 mm2 or larger) to connect the FR-A8AP. For the wiring to the terminals PG and SD,
use several cables in parallel or use a thick cable, according to the wiring length.
To protect the cables from noise, run them away from any source of noise (such as the main circuit and power supply
voltage).
Example of parallel connection
with two cables
(with complementary encoder output)
FR-A800
(FR-A8AP)
Encoder
PA1
PA2
FB1
FB2
PZ1
PZ2
A
B
C
D
F
G
PG
SD
S
R
2 mm2
Wiring length
Parallel connection
Within 10 m
At least two cables in parallel
Within 20 m
At least four cables in parallel
Within 100 m
At least six cables in parallel

Larger-size cable
0.4 mm2 or larger
Cable gauge 0.2 mm2
0.75 mm2 or larger
1.25 mm2 or larger
When differential line driver is set and a wiring length is 30 m or more.
The wiring length can be extended to 100 m by increasing the 5 V power supply (approximately to 5.5 V) while using six or more 0.2 mm2 gauge
cables in parallel or a 1.25 mm2 or larger gauge cable. The voltage applied must be within power supply specifications of encoder.
• To reduce noise of the encoder cable, earth (ground) the encoder's shielded cable to the enclosure
(as close as possible to the inverter) with a P-clip or U-clip made of metal.
Earthing (grounding) example using a P-clip
Encoder cable
Shield
P-clip
• When one encoder is shared between FR-A8AP and CNC (computerized numerical controller), its output signal should be
connected as shown below. In this case, the wiring length between FR-A8AP and CNC should be as short as possible,
within 5 m.
Inverter
(FR-A8AP)
Encoder
2
NC
Maximum 5 m
(two parallel cables)
NOTE
• For the details of the optional encoder dedicated cable (FR-JCBL/FR-V7CBL), refer to page 52.
• The FR-V7CBL is provided with a P-clip for earthing (grounding) shielded cables.
INSTALLATION AND WIRING
55
Connection of motor with encoder (vector control)
Parameter for the encoder (Pr.359, Pr.369)
Pr.
Initial
value
Name
Setting
range
Description
Set when using a motor for which
forward rotation (encoder) is clockwise
(CW) viewed from the shaft.
0
359
C141
Encoder rotation
direction
1
Set when using a motor for which
forward rotation (encoder) is
counterclockwise (CCW) viewed from
the shaft.
1
Number of encoder
pulses
1024
0 to 4096
Set for the operation at
120 Hz or less.
Set for the operation at a
frequency higher than
120 Hz.
CCW
101
369
C140
Set for the operation at a
frequency higher than
120 Hz.
CW
100
Set for the operation at
120 Hz or less.
Set the number of encoder pulses output.
Set the number of pulses before it is multiplied by 4.
The above parameters can be set when the FR-A8AP (option) is mounted.
Parameter settings for the motor under vector control
Motor name
Pr.9
Electronic
thermal O/L relay
Pr.71
Applied
motor
Pr.80
Motor
capacity
Pr.359
Encoder
rotation
direction
Pr.81
Number of
motor poles
Pr.369
Number of
encoder
pulses
Standard motor
Rated motor current
0 (3) 
Motor capacity
Number of
motor poles


Constant-torque motor
Rated motor current
1 (13) 
Motor capacity
Number of
motor poles




56
Offline auto tuning is required (Refer to the FR-A800 Instruction Manual (Detailed))
Set this parameter according to the motor.
INSTALLATION AND WIRING
Connection of stand-alone option units
2.9
Connection of stand-alone option units
The inverter accepts a variety of stand-alone option units as required.
Incorrect connection will cause inverter damage or accident. Connect and operate the option unit carefully in accordance with
the corresponding option unit manual.
2.9.1
Connection of the brake unit (FR-BU2)
Connect the brake unit (FR-BU2) as shown below to improve the braking capability during deceleration.
After wiring securely, set Pr.30 Regenerative function selection = "11" .
Set Pr.0 Brake mode selection = "2" in the brake unit FR-BU2.
T ∗2
MCCB
Three phase
AC power
supply
ON
MC
R/L1
S/L2
T/L3
OFF CR1 CR2 CR3 CR4
Motor
U
V
W
M
MC
MC
10 m or less
∗1
P/+
N/-
∗3
P
N
BUE
SD
Inverter/
converter
∗5
P
PR
P
TH1
TH2
PR
A
B
C
CR1
∗4
Resistor unit
MT-BR5
Brake unit
FR-BU2
P
PR
TH1
TH2
CR2
∗4
Resistor unit
MT-BR5
P
PR
TH1
TH2
CR3
∗4
Resistor unit
MT-BR5
P
PR
TH1
TH2
2
CR4
∗4
Resistor unit
MT-BR5





When wiring, make sure to match the terminal symbol (P/+, N/-) at the inverter side and at the brake unit
(FR-BU2) side. (Incorrect connection will damage the inverter and brake unit.)
When the power supply is 400 V class, install a stepdown transformer.
The wiring distance between the inverter, brake unit (FR-BU2) and resistor unit (MT-BR5) must be within
5 m each. Even when the cable is twisted, the wiring length must be within 10 m.
The contact between TH1 and TH2 is open in the normal status and is closed at a fault.
The CN8 connector used with the MT-BU5 type brake unit is not used.
NOTE
• The stall prevention (overvoltage), oL, does not occur while Pr.30 Regenerative function selection = "11" .
• For the parameter details, refer to the FR-A800 Instruction Manual (Detailed).
INSTALLATION AND WIRING
57
Connection of stand-alone option units
2.9.2
Connection of the high power factor converter
(FR-HC2)
When connecting the high power factor converter (FR-HC2) to suppress power harmonics, perform wiring securely as shown
below. Incorrect connection will damage the high power factor converter and the inverter.
After making sure that the wiring is correct, set "rated motor voltage" in Pr.19 Rated motor voltage (under V/F control) or
Pr.83 Regenerative function selection (under other that V/F control) and "2" in Pr.30 Regenerative function selection.
High power
factor converter
(FR-HC2)
Limit resistor
∗11
MCCB
MC
∗9
Power
Supply
Reactor 1
(FR-HCL21)
S/
L2
R2/
L12
S2/
L22
T/
L3
T2/
L32
R/
L1
Reactor 2
(FR-HCL22)
MC1
∗9
R3/ R4/
L13 L14
MC2
MC3
∗9
Filter capacitor
alarm detector
(NC contact) 2
∗11
S3/
L23
S4/
L24
S4/L24
T3/
L33
T4/
L34
T4/L34
MC1 MC2 MC3
Buffer relay for
filter capacitor
alarm detectors
MC
Small
Auxiliary contact for
limit MCs (NO contact) 3
Limit MC
∗3
∗7
R1/L11
S1/L21
X10
∗4
X11
∗5
RSO
RES
∗6
SD
SE
∗7
∗1
M
Earth
(Ground)
P/+
N/-
IPF
RDY
ROH
U
V
W
∗2
P/+
N/-
Mini relay for filter
capacitor alarm detector
MC
Bu2
R4/L14
Limit resistor (with thermostat)
(NC contact) 3
Filter capacitors 2
(FR-HCC2) ∗11
Inverter
SD
∗10
MC1
MC2
MC3
MC power
supply
stepdown
transformer
MC
Bu1
Buffer relay for driving MCs
88R
88S
R/L1
S/L2 ∗8
T/L3
R1/L11
S1/L21
∗10

Remove jumpers installed in terminals R1/L11 and S1/L21 of the inverter, and connect the power supply for the control circuit to terminals
R1/L11 and S1/L21.
 The voltage phases of terminals R4/L14, S4/L24, and T4/L34 and the voltage phases of terminals R/L1, S/L2, and T/L3 must be matched.
 Do not install an MCCB across the terminals P/+ and N/- (across terminals P and P/+ or across N and N/-). Connecting the opposite polarity
of terminals N/- and P/+ will damage the inverter.
For the A802 series, installation of a fuse is not required.
 Change the FR-HC2 parameter setting to Pr.10 RDY signal logic selection = "0" (positive logic).
 Use Pr.178 to Pr.189 (input terminal function selection) to assign the terminals used for the X10 signal.
For RS-485 or any other communication where the start command is only transmitted once, use the X11 signal to save the operation mode
at the time of an instantaneous power failure.
 Assign the IPF signal to an FR-HC2 terminal. (Refer to the Instruction Manual of FR-HC2.)
 Always connect the FR-HC2 terminal RDY to the inverter terminal MRS(X10), and the FR-HC2 terminal SE to the inverter terminal SD. Not
connecting these terminals may damage the FR-HC2.
 Always connect the R/L1, S/L2, and T/L3 terminals of FR-HC2 to the power supply. Operating the inverter without connecting them will
damage the FR-HC2.
 Do not install an MCCB or MC between the reactor 1 terminals (R/L1, S/L2, T/L3) and the FR-HC2 terminals (R4/L14, S4/L24, T4/L34). It
will not operate properly.
 Securely perform grounding (earthing) by using the grounding (earthing) terminal.
 The number of connected peripheral devices differs according to the capacity. For the detail, refer to the FR-HC2 Instruction Manual.
NOTE
• The voltage phases of terminals R/L1, S/L2, and T/L3 and the voltage phases of terminals R4/L14, S4/L24, and T4/L34 must
be matched.
• The control logic (sink logic/source logic) of the high power factor converter and the inverter must be matched. (Refer to page
38.)
• When using a sine wave filter with FR-HC2, select MT-BSL-HC as a reactor for the sine wave filter.
• For the parameter details, refer to the FR-A800 Instruction Manual (Detailed).
58
INSTALLATION AND WIRING
3
PRECAUTIONS FOR
USE OF THE
INVERTER
This chapter explains the precautions for use of this product.
Always read the instructions before using the equipment.
3.1
3.2
3.3
3.4
3.5
Electro-magnetic interference (EMI) and leakage currents ..60
Power supply harmonics .........................................................67
Installation of a reactor ............................................................70
Power-OFF and magnetic contactor (MC) ..............................71
Countermeasures against deterioration of the 400 V class
3.6
3.7
motor insulation........................................................................72
Checklist before starting operation ........................................73
Failsafe system which uses the inverter ................................76
3
PRECAUTIONS FOR USE OF THE INVERTER
59
Electro-magnetic interference (EMI) and leakage currents
3.1
Electro-magnetic interference (EMI) and
leakage currents
3.1.1
Leakage currents and countermeasures
Capacitances exist between the inverter I/O cables, other cables and earth and in the motor, through which a leakage current
flows. Since its value depends on the static capacitances, carrier frequency, etc., low acoustic noise operation at the
increased carrier frequency of the inverter will increase the leakage current. Therefore, take the following countermeasures.
Select the earth leakage current breaker according to its rated sensitivity current, independently of the carrier frequency
setting.
To-earth (ground) leakage currents
Leakage currents may flow not only into the inverter's own line but also into the other lines through the earthing (grounding)
cable, etc. These leakage currents may operate earth leakage circuit breakers and earth leakage relays unnecessarily.
Countermeasures
• If the carrier frequency setting is high, decrease the Pr.72 PWM frequency selection setting.
Note that motor noise increases. Selecting Pr.240 Soft-PWM operation selection makes the sound inoffensive.
• By using earth leakage circuit breakers designed for harmonic and surge suppression in the inverter's own line and other
line, operation can be performed with the carrier frequency kept high (with low noise).
To-earth (ground) leakage currents
• Take caution as long wiring will increase the leakage current. Decreasing the carrier frequency of the inverter reduces the
leakage current.
• Increasing the motor capacity increases the leakage current.
Line-to-line leakage currents
Harmonics of leakage currents flowing in static capacitances between the inverter output cables may operate the external
thermal relay unnecessarily.
MCCB
Power
supply
MC
Thermal relay
Motor
Inverter
M
Line-to-line static
capacitances
Line-to-line leakage currents path
Countermeasures
• Use Pr.9 Electronic thermal O/L relay.
• If the carrier frequency setting is high, decrease the Pr.72 PWM frequency selection setting.
Note that motor noise increases. Selecting Pr.240 Soft-PWM operation selection makes the sound inoffensive.
To ensure that the motor is protected against line-to-line leakage currents, it is recommended to use a temperature sensor
to directly detect motor temperature.
Installation and selection of the molded case circuit breaker
Install a molded case circuit breaker (MCCB) on the power receiving side to protect the wiring at the inverter input side.
Select an MCCB according to the inverter input side power factor, which depends on the power supply voltage, output
frequency and load. Especially for a completely electromagnetic MCCB, a slightly large capacity must be selected since its
operation characteristic varies with harmonic currents. (Check it in the data of the corresponding breaker.) As an earth
leakage current breaker, use the Mitsubishi earth leakage current breaker designed for harmonics and surge suppression.
60
PRECAUTIONS FOR USE OF THE INVERTER
Electro-magnetic interference (EMI) and leakage currents
Selecting the rated sensitivity current for the earth leakage circuit
breaker
When using an earth leakage circuit breaker with the inverter circuit, select its rated sensitivity current as follows,
independently of the PWM carrier frequency.
• Breaker designed for harmonic and surge suppression
Ig1, Ig2:
Rated sensitivity current
Leakage currents in wire path during commercial
power supply operation
In  10  (Ig1 + Ign + Igi + Ig2 + Igm)
• Standard breaker
Ign:
Leakage current of inverter input side noise filter
Igm:
Leakage current of motor during commercial power
Igi:
Leakage current of inverter unit
Rated sensitivity current
supply operation
In  10  {Ig1 + Ign + Igi + 3  (Ig2 + Igm)}
(When the converter unit is connected, add the
leakage current of converter unit.)
(Three-phase three-wire delta
connection 400V60Hz)
(Totally-enclosed fan-cooled
type motor 400V60Hz)
leakage currents (mA)
Leakage current example of threephase induction motor during the
commercial power supply operation
leakage currents (mA)
Example of leakage current per 1km during
the commercial power supply operation
when the CV cable is routed in metal conduit
120
100
80
60
40
20
0
2 3.5 8 142238 80150
5.5
30 60 100
2. 0
1. 0
0. 7
0. 5
0. 3
0. 2
0. 1
Cable size (mm2)
1. 5 3. 7 7. 5 15223755
2. 2 5.5 1118. 53045
Motor capacity (kW)
For " " connection, the amount of leakage current is appox.1/3 of the above value.
<Example>
• Selection example for the
Item
connection of the 400 V class
Breaker designed
for harmonic and
Standard breaker
surge suppression
1
Leakage current Ig1 (mA)
5.5mm2
ELB
5m
5.5mm2 60m
Noise
filter
3φ
M 400V
2.2kW
Inverter
Ig1
Ign
Ig2
3
5m
1000 m
= 0.11
Leakage current Ign (mA)
0 (without noise filter)
Leakage current Igi (mA)
1 (without EMC filter)
For the leakage current of the inverter, refer to
the following table.
Igm
1
Leakage current Ig2 (mA)
Igi
66 
3
Motor leakage current Igm (mA)
66 
60 m
1000 m
= 1.32
0.36
Total leakage current (mA)
2.79
6.15
Rated sensitivity current (mA) ( Ig  10)
30
100
• Inverter/converter unit leakage current
400 V class (input power condition: 440 V/60 Hz, power supply unbalance within 3%)
Inverter/
converter unit
EMC filter
Phase
earthing
(grounding)
Earthed-neutral
system
FR-A800
(Standard model)
ON
OFF
Converter unit FR-CC2
H315K, H355K
H400K to H500K
ON
OFF
ON
OFF
FR-A802
(Separated converter type)
-
35
2
2
35
2
70
2
2
1
1
2
1
2
1
(mA)
PRECAUTIONS FOR USE OF THE INVERTER
61
3
Electro-magnetic interference (EMI) and leakage currents
NOTE
• Install the earth leakage circuit breaker (ELB) on the input side of the converter unit.
• In the
connection earthed-neutral system, the sensitivity current is blunt against a ground fault in the inverter output side.
Earthing (Grounding) must conform to the requirements of national and local safety regulations and electrical codes. (NEC
section 250, IEC 536 class 1 and other applicable standards)
• When the breaker is installed on the output side of the inverter, it may be unnecessarily operated by harmonics even if the
effective value is within the rating.
In this case, do not install the breaker since the eddy current and hysteresis loss will increase, leading to temperature rise.
• The following models are standard breakers BV-C1, BC-V, NVB, NV-L, NV-G2N, NV-G3NA, NV-2F,
earth leakage relay (except NV-ZHA), and NV with AA neutral wire open-phase protection.
The other models are designed for harmonic and surge suppression: NV-C/NV-S/MN series, NV30-FA, NV50-FA, BV-C2,
earth leakage alarm breaker (NF-Z), NV-ZHA, and NV-H.
• For the leakage current of a 75 kW or higher motor, contact the motor manufacturer.
62
PRECAUTIONS FOR USE OF THE INVERTER
Electro-magnetic interference (EMI) and leakage currents
3.1.2
Countermeasures against inverter-generated
EMI
Some electromagnetic noises enter the inverter or the converter unit to cause its malfunction, and others are radiated by the
inverter or the converter unit to cause the peripheral devices to malfunction. Though the inverter or the converter unit is
designed to have high immunity performance, it handles low-level signals, so it requires the following basic techniques. Also,
since the inverter chops outputs at high carrier frequency, that could generate electromagnetic noises. If these
electromagnetic noises cause peripheral devices to malfunction, EMI countermeasures should be taken to suppress noises.
These techniques differ slightly depending on EMI paths.
• Basic techniques
- Do not run the power cables (I/O cables) and signal cables of the inverter or the converter unit in parallel with each other
and do not bundle them.
- Use shielded twisted pair cables for the detector connecting and control signal cables and connect the sheathes of the
shielded cables to terminal SD.
- Ground (Earth) the inverter or the converter unit, motor, etc. at one point.
• Techniques to reduce electromagnetic noises that enter and cause a malfunction of the inverter or the converter unit (EMI
countermeasures)
When devices that generate many electromagnetic noises (which use magnetic contactors, electromagnetic brakes, many
relays, for example) are installed near the inverter or the converter unit and it may malfunction due to electromagnetic
noises, the following countermeasures must be taken:
- Provide surge suppressors for devices that generate many electromagnetic noises to suppress electromagnetic noises.
- Install data line filters (page 64) to signal cables.
- Ground (Earth) the shields of the detector connection and control signal cables with cable clamp metal.
• Techniques to reduce electromagnetic noises that are radiated by the inverter to or converter unit cause the peripheral
devices to malfunction (EMI countermeasures)
Noises generated from the inverter or the converter unit are largely classified into those radiated by the cables connected to
the inverter or the converter unit and its main circuits (I/O), those electromagnetically and electrostatically induced to the
signal cables of the peripheral devices close to the main circuit power supply, and those transmitted through the power
supply cables.
Inverter generated
electromagnetic
noise
Air propagated
noise
Noise directly radiated
from the inverter or the
converter unit
Path (a)
Noise radiated from
power supply cable
Path (b)
Noise radiated from
motor connection cable
Path (c)
Electromagnetic
induction noise
Path (d), (e)
Electrostatic
induction noise
Path (f)
Electrical path
propagated noise
Noise propagated through
power supply cable
Noise from earthing
(grounding) cable due to
leakage current
(e)
(g)
Instrument
Receiver
Telephone
(g)
(b)
(a) Converter
unit
(c) Inverter
(d)
Path (g)
Motor
M
Sensor
power supply
(f)
(a)
(h)
(c) Sensor
Path (h)
PRECAUTIONS FOR USE OF THE INVERTER
63
3
Electro-magnetic interference (EMI) and leakage currents
Noise
propagation path
Countermeasure
(a)(b)(c)
When devices that handle low-level signals and are liable to malfunction due to electromagnetic noises, e.g.
instruments, receivers and sensors, are contained in the enclosure that contains the inverter or the converter unit,
or when their signal cables are run near the inverter, the devices may malfunction due to by air-propagated
electromagnetic noises. The following countermeasures must be taken:
• Install easily affected devices as far away as possible from the inverter or the converter unit.
• Run easily affected signal cables as far away as possible from the inverter or the converter unit, and its I/O
cables.
• Do not run the signal cables and power cables (inverter or converter unit I/O cables) in parallel with each other
and do not bundle them.
• Set the EMC filter ON/OFF connector of the converter unit to the ON position. (Refer to page 66.)
• Inserting a line noise filter into the output suppresses the radiated noise from the cables.
• Use shielded cables as signal cables and power cables and run them in individual metal conduits to produce
further effects.
(d)(e)(f)
When the signal cables are run in parallel with or bundled with the power cables, magnetic and static induction
noises may be propagated to the signal cables to cause malfunction of the devices and the following
countermeasures must be taken:
• Install easily affected devices as far away as possible from the inverter or the converter unit.
• Run easily affected signal cables as far away as possible from the inverter or the converter unit, and its I/O
cables.
• Do not run the signal cables and power cables (inverter or converter unit I/O cables) in parallel with each other
and do not bundle them.
• Use shielded cables as signal cables and power cables and run them in individual metal conduits to produce
further effects.
(g)
When the power supplies of the peripheral devices are connected to the power supply of the inverter or the
converter unit in the same line, its generated noises may flow back through the power supply cables to cause
malfunction of the devices and the following countermeasures must be taken:
• Set the EMC filter ON/OFF connector of the converter unit to the ON position. (Refer to page 66.)
• Install the line noise filter to the power cables (output cables) of the inverter.
(h)
When a closed loop circuit is formed by connecting the peripheral device wiring to the inverter or the converter unit,
leakage currents may flow through the earthing (grounding) cable of the inverter or the converter unit to cause the
device to malfunction. In that case, disconnecting the earthing (grounding) cable from the device may stop the
malfunction of the device.
Data line filter
Data line filter is effective as an EMI countermeasure. Provide a data line filter for the detector cable, etc.
<Example> Data line filter: ZCAT3035-1330 (by TDK)
ESD-SR-250 (by NEC TOKIN)
Impedance (ZCAT3035-1330)
10 to 100 MHz
100 to 500 MHz
80
150
39 1
34 1
[Unit: mm]
Cable fixing
band mount
30 1
The impedance values above are reference values, and not
guaranteed values.
TDK
Product name
Lot number
OUTLINE DIMENSION DRAWINGS (ZCAT3035-1330)
64
PRECAUTIONS FOR USE OF THE INVERTER
13 1
Impedance ()
Electro-magnetic interference (EMI) and leakage currents
EMI countermeasure example
Enclosure
Inverter
power
supply
EMC
filter
Decrease carrier frequency
Converter
unit
Line noise
filter
Inverter
M
Motor
Use 4-core cable for motor
power cable and use one cable
as earth (ground) cable.
Separate inverter,
converter unit and
power line by more than
30cm (at least 10cm)
from sensor circuit.
Use a twisted pair shielded cable
Sensor
Power
supply for
sensor
Control
power
supply
Install filter on inverter output side.
Do not earth (ground) shield but
connect it to signal common cable.
Do not earth (ground) enclosure directly.
Do not earth (ground) control cable.
NOTE
• For compliance with the EU EMC Directive, refer to page 109.
3
PRECAUTIONS FOR USE OF THE INVERTER
65
Electro-magnetic interference (EMI) and leakage currents
3.1.3
Converter unit (FR-CC2) built-in EMC filter
The converter unit (FR-CC2) is equipped with a built-in EMC filter (capacitive filter).
These filters are effective in reducing air-propagated noise on the input side of the converter unit.
To enable the EMC filter, fit the EMC filter ON/OFF connector to the ON position. The EMC filter is initially set to the "disabled"
(OFF) position.
(For the FR-CC2-H400K or higher, two EMC filter ON/OFF connectors are provided. The both connectors are initially set to
the "disabled" (OFF) position. To enable the EMC filter, fit the both EMC filter ON/OFF connectors to the ON position.)
EMC filter ON/OFF connector
FILTER
OFF ON
OFF ON
FILTER
EMC filter OFF
EMC filter ON
EMC filter ON/OFF connector
(Provided for the FR-CC2-H400K or higher)
FILTER
FILTER
OFF ON
OFF ON
EMC filter OFF
EMC filter ON
<How to enable or disable the filter>
• Before removing a front cover, check to make sure that the indication of the inverter operation panel is OFF, wait for at least
10 minutes after the power supply has been switched OFF, and check that there is no residual voltage using a tester or the
like.
• When disconnecting the connector, push the fixing tab and pull the connector straight without pulling the cable or forcibly
pulling the connector with the tab fixed.
When installing the connector, also engage the fixing tab securely.
(If it is difficult to disconnect the connector, use a pair of needle-nose pliers, etc.)
EMC filter
ON/OFF connector
(Side view)
Disengage connector fixing tab
With tab disengaged,
pull up the connector straight.
NOTE
• Fit the connector to either ON or OFF position.
• Enabling (turning ON) the EMC filter increases leakage current. (Refer to page 61.)
Warning
 While the inverter power is ON, do not open the front cover. Otherwise you may get an electric shock.
66
PRECAUTIONS FOR USE OF THE INVERTER
Power supply harmonics
3.2
Power supply harmonics
3.2.1
Power supply harmonics
The inverter may generate power supply harmonics from its converter circuit to affect the power generator, power factor
correction capacitor etc. Power supply harmonics are different from noise and leakage currents in source, frequency band and
transmission path. Take the following countermeasure suppression techniques.
• The differences between harmonics and noises
Item
Harmonics
Frequency
Normally 40th to 50th degrees or less (3 kHz
or less).
High frequency (several 10 kHz to 1 GHz order).
Environment
Quantitative understanding
Generated amount
Affected equipment immunity
Countermeasure
Noise
To-electric channel, power impedance.
To-space, distance, wiring path,
Theoretical calculation possible.
Random occurrence, quantitative grasping difficult.
Nearly proportional to the load capacity.
Changes with the current variation ratio. (Gets larger as
switching speed increases.)
Specified by standards per equipment.
Different depending on maker's equipment specifications.
Provide a reactor.
Increase distance.
• Countermeasures
The harmonic current generated from the inverter
DC reactor ∗1
to the input side differs according to various
conditions such as the wiring impedance, whether
output current on the load side.
For the output frequency and output current, we
understand that this should be calculated in the
MCCB
Power supply
a reactor is used or not, and output frequency and
conditions under the rated load at the maximum
MC
R
X
S
Y
T
Z
AC reactor
(FR-HAL)
operating frequency.

R/L1
U
S/L2
V
T/L3
W
Inverter/
converter
M
Do not insert power
factor improving capacitor.
The converter unit (FR-CC2) is equipped with the DC reactor.
NOTE
• The power factor improving capacitor and surge suppressor on the inverter output side may be overheated or damaged by
the harmonic components of the inverter output. Also, since an excessive current flows in the inverter to activate overcurrent
protection, do not provide a capacitor and surge suppressor on the inverter output side when the motor is driven by the
inverter. For power factor improvement, install a reactor on the inverter input side or in the DC circuit.
3
PRECAUTIONS FOR USE OF THE INVERTER
67
Power supply harmonics
3.2.2
Harmonic Suppression Guidelines in Japan
Harmonic currents flow from the inverter to a power receiving point via a power transformer. The Harmonic Suppression
Guidelines was established to protect other consumers from these outgoing harmonic currents.
The three-phase 200 V input specifications 3.7 kW or lower were previously covered by "the Harmonic Suppression Guidelines for
Household Appliances and General-purpose Products" and other models were covered by "the Harmonic Suppression Guidelines for
Consumers Who Receive High Voltage or Special High Voltage". However, the transistorized inverter has been excluded from the target
products covered by "the Harmonic Suppression Guidelines for Household Appliances and General-purpose Products" in January 2004 and
"the Harmonic Suppression Guideline for Household Appliances and General-purpose Products" was repealed on September 6, 2004.
All capacity and all models of general-purpose inverter used by specific consumers are now covered by "the Harmonic
Suppression Guidelines for Consumers Who Receive High Voltage or Special High Voltage" (hereinafter referred to as "the
Specific Consumer Guidelines").
• "Specific Consumer Guidelines"
This guideline sets forth the maximum harmonic currents outgoing from a high-voltage or especially high-voltage receiving
consumer who will install, add or renew harmonic generating equipment. If any of the maximum values is exceeded, this
guideline requires that consumer to take certain suppression measures.
• Maximum Values of Outgoing Harmonic Currents per 1 kW Contract Power
Received power
voltage
6.6 kV
22 kV
33 kV
5th
3.5
1.8
1.2
7th
11th
2.5
1.3
0.86
13th
1.6
0.82
0.55
17th
1.3
0.69
0.46
1.0
0.53
0.35
19th
0.9
0.47
0.32
23rd
0.76
0.39
0.26
Over
23rd
0.70
0.36
0.24
Application of the specific consumer guidelines
Install, add or renew
equipment
Calculation of equivalent
capacity total
Equal to or less
than reference
capacity
Equivalent
capacity total
Above reference
capacity
Calculation of outgoing
harmonic current
More than upper limit
Not more than
harmonic current upper
limit?
Equal to or less
than upper limit
Harmonic suppression
measures necessary
Harmonic suppression
measures unnecessary
• Conversion factors for FR-A800 series
Classification
Circuit type
Three-phase bridge
(Capacitor smoothing)
Self-excitation three-phase bridge
3
5
Conversion coefficient Ki
With reactor (DC side) 
With reactors (AC, DC sides) 
When a high power factor converter is used
K33 = 1.8
K34 = 1.4
K5 = 0
• Equivalent Capacity Limits
Received power voltage
6.6 kV
22/33 kV
66 kV or more
Reference capacity
50 kVA
300 kVA
2000 kVA
• Harmonic content (Values of the fundamental current is 100%)
reactor
Used (DC side) 
Used (AC, DC sides) 

68
5th
30
28
7th
13
9.1
11th
8.4
7.2
13th
5.0
4.1
The converter unit (FR-CC2) is equipped with the DC reactor on its DC side.
PRECAUTIONS FOR USE OF THE INVERTER
17th
4.7
3.2
19th
3.2
2.4
23rd
3.0
1.6
25th
2.2
1.4
Power supply harmonics
• Calculation of equivalent capacity P0 of harmonic generating equipment
"Equivalent capacity" is the capacity of a 6-pulse converter converted from the capacity of consumer's harmonic generating
equipment and is calculated by the following equation: If the sum of equivalent capacities is higher than the limit in (refer to
page 68), harmonics must be calculated with the following procedure:
P0 = ∑ (Ki  Pi) [kVA]
Ki: Conversion coefficient (Refer to page 68)
Pi: Rated capacity of harmonic generating equipment [kVA]
i: Number indicating the conversion circuit type

Rated capacity: Determined by the capacity of the
applied motor and found in Table 5. The rated
capacity used here is used to calculate the generated
harmonic amount and is different from the power
supply capacity required for actual inverter drive.
• Calculation of outgoing harmonic current
Outgoing harmonic current = fundamental wave current (value converted from received power voltage)  operation ratio 
harmonic content
• Operation ratio: Operation ratio = actual load factor  operation time ratio during 30 minutes
• Harmonic content: Found in page 68.
• Rated capacities and outgoing harmonic currents of inverter-driven motors
Applicable
motor
(kW)
Rated
current (A)
400 V
Fundamental
wave current
converted
from 6.6 kV
(mA)
Rated
capacity
(kVA)
Outgoing harmonic current converted from 6.6 kV (mA)
(With a DC reactor, 100% operation ratio)
5th
7th
11th
13th
17th
19th
23rd
25th
75
123
7455
87.2
2237
969
626
373
350
239
224
164
90
147
8909
104
2673
1158
748
445
419
285
267
196
110
179
10848
127
3254
1410
911
542
510
347
325
239
132
216
13091
153
3927
1702
1100
655
615
419
393
288
160
258
15636
183
4691
2033
1313
782
735
500
469
344
220
355
21515
252
6455
2797
1807
1076
1011
688
645
473
250
403
24424
286
7327
3175
2052
1221
1148
782
733
537
280
450
27273
319
8182
3545
2291
1364
1282
873
818
600
315
506
30667
359
9200
3987
2576
1533
1441
981
920
675
355
571
34606
405
10382
4499
2907
1730
1627
1107
1038
761
400
643
38970
456
11691
5066
3274
1949
1832
1247
1169
857
450
723
43818
512
13146
5696
3681
2191
2060
1402
1315
964
500
804
48727
570
14618
6335
4093
2436
2290
1559
1462
1072
560
900
54545
638
16364
7091
4582
2727
2564
1746
1636
1200
• Determining if a countermeasure is required
A countermeasure for harmonics is required if the following condition is satisfied: outgoing harmonic current > maximum
value per 1 kW contract power  contract power.
• Harmonic suppression techniques
No.
Item
Description
1
Reactor installation
(FR-HAL)
The converter unit (FR-CC2) is equipped with the DC reactor on its DC side, and outgoing harmonic
current can be suppressed. By installing an AC reactor (FR-HAL) on the AC side of the inverter, the
outgoing harmonic current suppression performance can be improved.
2
high power factor
converter
(FR-HC2)
This converter trims the current waveform to be a sine waveform by switching the rectifier circuit
(converter module) with transistors. Doing so suppresses the generated harmonic amount significantly.
Connect it to the DC area of an inverter. Use the high power factor converter (FR-HC2) with the
accessories that come as standard.
3
Installation of power
factor improving
capacitor
When used with a reactor connected in series, the power factor improving correction capacitor can
absorb harmonic currents.
4
Transformer multi-phase
operation
Use two transformers with a phase angle difference of 30° as in - and - combinations to provide an
effect corresponding to 12 pulses, reducing low-degree harmonic currents.
5
Passive filter
(AC filter)
A capacitor and a reactor are used together to reduce impedances at specific frequencies. Harmonic
currents are expected to be absorbed greatly by using this technique.
6
Active filter
(Active filter)
This filter detects the current in a circuit generating a harmonic current and generates a harmonic current
equivalent to a difference between that current and a fundamental wave current to suppress the
harmonic current at the detection point. Harmonic currents are expected to be absorbed greatly by using
this technique.
PRECAUTIONS FOR USE OF THE INVERTER
69
3
Installation of a reactor
3.3
Installation of a reactor
When the inverter is connected near a large-capacity power transformer (1000 kVA or more) or when a power factor
correction capacitor is to be switched over, an excessive peak current may flow in the power input circuit, damaging the
MCCB
Power
supply
MC
AC reactor
(FR-HAL)
R
X
S
Y
T
Z
Inverter/
converter unit
R/L1
U
S/L2
V
T/L3
W
M
Power supply system
capacity (kVA)
converter circuit. To prevent this, always install an optional AC reactor (FR-HAL).
5300
5000
4000
3000
Capacities requiring
installation of
AC reactor
2000
1000
110 165 247
330
420
Inverter capacity
70
PRECAUTIONS FOR USE OF THE INVERTER
550 kVA
Power-OFF and magnetic contactor (MC)
3.4
Power-OFF and magnetic contactor (MC)
Converter unit input side magnetic contactor (MC)
On the converter unit input side, it is recommended to provide an MC for the following purposes:
(Refer to page 14 for selection.)
• To disconnect the inverter from the power supply at activation of a protective function or at malfunctioning of the driving
system (emergency stop, etc.).
• To prevent any accident due to an automatic restart at power restoration after an inverter stop made by a power failure.
• To separate the inverter from the power supply to ensure safe maintenance and inspection work.
If using an MC for emergency stop during operation, select an MC regarding the converter unit input side current as
JEM1038-AC-3 class rated current.
NOTE
• Since repeated inrush currents at power ON will shorten the life of the converter circuit (switching life is about 1,000,000
times), frequent starts and stops of the magnetic contactor must be avoided. Turn ON/OFF the inverter start controlling
terminals (STF, STR) to run/stop the inverter.
• Inverter start/stop circuit example
As shown below, always use the start signal (ON or OFF of STF(STR) signal) to make a start or stop.
MCCB
MC
U
R/L1
Power
supply
S/L2
T/L3
R1/L11
P/+
P/+
N/-
N/R1/L11
∗2
S1/L21
T ∗1
OFF
ON
MC
Start
Stop


RA
∗2
SD
C1
Inverter
B1
A1
Start/Stop
MC
Converter
unit
W
X10
SE
MC
To the
motor
S1/L21
RDA
Operation preparation
V
C1
B1
RA
A1
STF/STR
SD
RA
When the power supply is 400 V class, install a stepdown transformer.
Connect the power supply terminals R1/L11, S1/L21 of the control circuit to the input side of the MC to hold an alarm signal when the inverter's
protective circuit is activated. At this time, remove jumpers across terminals R1/L11 and S1/L21. (Refer to page 43 for removal of the jumper.)
Handling of the magnetic contactor on the inverter's output side
Switch the magnetic contactor between the inverter and motor only when both the inverter and motor are at a stop. When the
magnetic contactor is turned ON while the inverter is operating, overcurrent protection of the inverter and such will activate.
When an MC is provided to switch to a commercial power supply, for example, it is recommended to use the commercial
power supply-inverter switchover function Pr.135 to Pr.139. (The commercial power supply operation is not available with
vector control dedicated motors nor with PM motors.)
Handling of the manual contactor on the inverter's output side
A PM motor is a synchronous motor with high-performance magnets embedded inside. High-voltage is generated at the motor
terminals while the motor is running even after the inverter power is turned OFF. In an application where the PM motor is
driven by the load even after the inverter is powered OFF, a low-voltage manual contactor must be connected at the inverter's
output side.
PRECAUTIONS FOR USE OF THE INVERTER
71
3
Countermeasures against deterioration of the 400 V class motor insulation
NOTE
• Before wiring or inspection for a PM motor, confirm that the PM motor is stopped. In an application, such as fan and blower,
where the motor is driven by the load, a low-voltage manual contactor must be connected at the inverter's output side, and
wiring and inspection must be performed while the contactor is open. Otherwise you may get an electric shock.
• Do not open or close the contactor while the inverter is running (outputting).
3.5
Countermeasures against deterioration of
the 400 V class motor insulation
In the PWM type inverter, a surge voltage attributable to wiring constants is generated at the motor terminals. Especially in a
400 V class motor, the surge voltage may deteriorate the insulation. When the 400 V class motor is driven by the inverter,
consider the following countermeasures:
• Countermeasures
(With induction motor)
It is recommended to take one of the following countermeasures:
• Rectifying the motor insulation and limiting the PWM carrier frequency according to the wiring length
For the 400 V class motor, use an insulation-enhanced motor.
Specifically,
- Order a "400 V class inverter-driven insulation-enhanced motor".
- For the dedicated motor such as the constant-torque motor and low-vibration motor, use an "inverter-driven dedicated
motor".
- Set Pr.72 PWM frequency selection as indicated below according to the wiring length.
Wiring length
100 m or shorter
Longer than 100 m
Pr.72 PWM frequency selection
6 (6 kHz) or lower
4 (4 kHz) or lower
• Suppressing the surge voltage on the inverter side
- If the motor capacity is 280 kW or lower, connect the sine wave filter (MT-BSL/BSC) to the output side.
(With PM motor)
• When the wiring length exceeds 50 m, set "9" (6 kHz) or less in Pr.72 PWM frequency selection.
NOTE
• When using the optional sine wave filter (MT-BSL/BSC), set Pr.72="25" (2.5 kHz).
• For the details of the sine wave filter (MT-BSL/BSC), refer to the Instruction Manual of each option.
• A sine wave filter (MT-BSL/BSC) can be used under V/F control. Do not use the filters under different control methods.
• The carrier frequency is limited during PM sensorless vector control. (Refer to the FR-A800 Instruction Manual (Detailed))
72
PRECAUTIONS FOR USE OF THE INVERTER
Checklist before starting operation
3.6
Checklist before starting operation
The FR-A800 series inverter and FR-CC2 converter unit are highly reliable products, but incorrect peripheral circuit making or
operation/handling method may shorten the product life or damage the products.
Before starting operation, always recheck the following points.
Checkpoint
Countermeasure
Refer
to page
Crimping terminals are insulated.
Use crimping terminals with insulation sleeves to wire the power supply and
the motor.
-
The wiring between the power
supply (R/L1, S/L2, T/L3) and the
motor (U, V, W) is correct.
Application of power to the output terminals (U, V, W) of the inverter will
damage the inverter. Never perform such wiring.
29
No wire offcuts are left from the time
of wiring.
The main circuit cable gauge is
correctly selected.
The total wiring length within the
specified length.
Countermeasures are taken against
EMI.
On the inverter's output side, none
of the power factor correction
capacitor, surge suppressor, or
radio noise filter is installed.
When performing an inspection or
rewiring on the product that has
been energized, the operator has
waited long enough after shutting off
the power supply.
The inverter's output side has no
short circuit or ground fault
occurring.
The circuit is not configured to use
the converter unit's input-side
magnetic contactor to start/stop the
inverter frequently.
The voltage applied to the I/O signal
circuits of the inverter and the
converter unit is within the
specifications.
Wire offcuts can cause an alarm, failure or malfunction. Always keep the
inverter and the converter unit clean.
When drilling mounting holes in an enclosure etc., take caution not to allow
chips and other foreign matter to enter the inverter and the converter unit.
Use an appropriate cable gauge to suppress the voltage drop to 2% or less.
If the wiring distance is long between the inverter and motor, a voltage drop
in the main circuit will cause the motor torque to decrease especially during
the output of a low frequency.
Keep the total wiring length is within the specified length.
In long distance wiring, charging currents due to stray capacitance in the
wiring may degrade the fast-response current limit operation or cause the
equipment on the inverter's output side to malfunction. Pay attention to the
total wiring length.
The input/output (main circuit) of the inverter and the converter unit includes
high frequency components, which may interfere with the communication
devices (such as AM radios) used near the inverter and the converter unit. In
such case, activate the EMC filter (turn ON the EMC filter ON/OFF
connector) to minimize interference.
Doing so will cause the inverter to trip or the capacitor and surge suppressor
to be damaged. If any of the above devices is connected, immediately
remove it.
For a short time after the power-OFF, a high voltage remains in the
smoothing capacitor, and it is dangerous.
Before performing an inspection or rewiring, wait 10 minutes or longer after
the power supply turns OFF, then confirm that the voltage across the main
circuit terminals P/+ and N/- of the inverter is low enough using a tester, etc.
• A short circuit or earth (ground) fault on the inverter's output side may
damage the inverter module.
• Fully check the insulation resistance of the circuit prior to inverter operation
since repeated short circuits caused by peripheral circuit inadequacy or an
earth (ground) fault caused by wiring inadequacy or reduced motor
insulation resistance may damage the inverter module.
• Fully check the to-earth (ground) insulation and phase-to-phase insulation
of the inverter's output side before power-ON. Especially for an old motor or
use in hostile atmosphere, securely check the motor insulation resistance,
etc.
Since repeated inrush currents at power ON will shorten the life of the
inverter and the converter unit, frequent starts and stops of the magnetic
contactor must be avoided. Turn ON/OFF the inverter's start signals (STF,
STR) to run/stop the inverter.
Application of a voltage higher than the permissible voltage to the I/O signal
circuits of the inverter and the converter unit or opposite polarity may
damage the I/O devices. Especially check the wiring to prevent the speed
setting potentiometer from being connected incorrectly to short circuit the
terminals 10E and 5.
Check
by user
-
30
30
66
-
-
-
3
71
33
PRECAUTIONS FOR USE OF THE INVERTER
73
Checklist before starting operation
Checkpoint
The converter unit and the inverter
are correctly connected.
When using the electronic bypass
operation, electrical and mechanical
interlocks are provided between the
electronic bypass contactors MC1
and MC2.
Refer
to page
Countermeasure
• Make sure that the terminal P/+ of the converter unit and the terminal P/+ of
the inverter, and the terminal N/- of the converter unit and the terminal N- of
the inverter are correctly connected.
Connecting the opposite polarity of terminals N/- and P/+ will damage the
inverter.
Also, do not install an MCCB across the terminals P/+ and N/- (across
terminals P and P/+ or across N and N/-).
• Always connect the terminal RDA of the converter unit and the terminal
MRS (X10) of the inverter, and the terminal SE of the converter unit and the
terminal SD (terminal PC for source logic) of the inverter.
Not connecting these terminals may damage the converter unit.
When using a switching circuit as shown below, chattering due to misconfigured sequence or arc generated at switching may allow undesirable
current to flow in and damage the inverter. Mis-wiring may also damage the
inverter.
(The commercial power supply operation is not available with vector control
dedicated motors nor with PM motors.)
27
MC1
Interlock
Power
supply
R/L1
U
S/L2
V
T/L3
W
IM
-
MC2
Undesirable current
Inverter/
converter unit
A countermeasure is provided for
power restoration after a power
failure.
Wheng using the vector control, the
encoder is properly installed.
A magnetic contactor (MC) is
installed on the converter unit's
input side.
The magnetic contactor on the
inverter's output side is properly
handled.
When using a PM motor, a lowvoltage manual contactor is installed
on the inverter's output side.
An EMI countermeasure is provided
for the frequency setting signals.
74
When switching to the commercial power supply operation while a failure
such as an output short circuit is occurring between the magnetic contactor
MC2 and the motor, the damage may further spread.
When a failure occurs between the MC2 and motor, make sure to provide a
protection circuit, such as using the OH signal input.
If the machine must not be restarted when power is restored after a power
failure, provide an MC in the converter unit's input side and also make up a
sequence which will not switch ON the start signal. If the start signal (start
switch) remains ON after a power failure, the inverter will automatically
restart as soon as the power is restored.
The encoder must be directly connected to a motor shaft without any
backlash. (Real sensorless vector control, PM sensorless vector control do
not require an encoder.)
On the converter unit's input side, connect an MC for the following purposes:
• To disconnect the inverter and the converter unit from the power supply at
activation of a protective function or at malfunctioning of the driving system
(emergency stop, etc.).
• To prevent any accident due to an automatic restart at power restoration
after an inverter stop made by a power failure.
• To separate the inverter and the converter unit from the power supply to
ensure safe maintenance and inspection work.
If using an MC for emergency stop during operation, select an MC regarding
the converter unit input side current as JEM1038-AC-3 class rated current.
Switch the magnetic contactor between the inverter and motor only when
both the inverter and motor are at a stop.
A PM motor is a synchronous motor with high-performance magnets
embedded inside. High-voltage is generated at the motor terminals while the
motor is running even after the inverter power is turned OFF. In an
application, such as fan and blower, where the motor is driven by the load, a
low-voltage manual contactor must be connected at the inverter's output
side, and wiring and inspection must be performed while the contactor is
open. Otherwise you may get an electric shock.
If electromagnetic noise generated from the inverter and the converter unit
causes frequency setting signal to fluctuate and the motor rotation speed to
be unstable when changing the motor speed with analog signals, the
following countermeasures are effective:
• Do not run the signal cables and power cables (inverter and converter unit I/
O cables) in parallel with each other and do not bundle them.
• Run signal cables as far away as possible from power cables (inverter and
converter I/O cables).
• Use shielded cables.
• Install a ferrite core on the signal cable (Example: ZCAT3035-1330 TDK).
PRECAUTIONS FOR USE OF THE INVERTER
-
50
71
71
71
-
Check
by user
Checklist before starting operation
Refer
to page
Checkpoint
Countermeasure
A countermeasure is provided for an
overload operation.
When performing frequent starts/stops by the inverter, rise/fall in the
temperature of the transistor element of the inverter will repeat due to a
repeated flow of large current, shortening the life from thermal fatigue. Since
thermal fatigue is related to the amount of current, the life can be increased
by reducing current at locked condition, starting current, etc. Reducing
current may extend the service life but may also cause torque shortage,
which leads to a start failure. Adding a margin to the current can eliminate
such a condition. For an induction motor, use the inverter and the converter
unit of a higher capacity (up to two ranks). For a PM motor, use the inverter
and the converter unit, and PM motor of higher capacities.
-
The specifications and rating match
the system requirements.
Make sure that the specifications and rating match the system requirements.
-
Check
by user
3
PRECAUTIONS FOR USE OF THE INVERTER
75
Failsafe system which uses the inverter
3.7
Failsafe system which uses the inverter
When a fault is detected by the protective function, the protective function activates and outputs a fault signal. However, a
fault signal may not be output at an inverter's fault occurrence when the detection circuit or output circuit fails, etc. Although
Mitsubishi assures the best quality products, provide an interlock which uses inverter status output signals to prevent
accidents such as damage to the machine when the inverter fails for some reason. Also at the same time consider the system
configuration where a failsafe from outside the inverter, without using the inverter, is enabled even if the inverter fails.
Interlock method which uses the inverter status output signals
By combining the inverter output signals to provide an interlock as shown below, an inverter failure can be detected.
No.
Interlock method
Check method
Used signals
a
Inverter protective function
operation
Operation check of an alarm contact.
Circuit error detection by negative logic.
Fault output signal (ALM signal)
b
Inverter operating status
Operation ready signal check.
Operation ready signal (RY signal)
c
Inverter running status
Logic check of the start signal and running signal.
Start signal (STF signal, STR signal)
Running signal (RUN signal)
d
Inverter running status
Logic check of the start signal and output current.
Start signal (STF signal, STR signal)
Output current detection signal (Y12
signal)
Output frequency
(a) Checking by the output of the inverter fault signal
When the inverter's protective function activates and the
inverter trips, the fault output signal (ALM signal) is
output. (ALM signal is assigned to terminal A1B1C1 in
the initial setting).
With this signal, check that the inverter operates
properly.
In addition, negative logic can be set. (ON when the
Inverter fault occurrence
(trip)
Time
ALM
(when output
at NC contact)
ON OFF
ON OFF
Reset processing
(about 1s)
RES
inverter is normal, OFF when the fault occurs.)
Reset ON
Operation ready signal (RY signal) is output when the
inverter power is ON and the inverter becomes
Power
supply
operative.
Check if the RY signal is output after powering ON the
inverter.
(c) Checking the inverter operating status by the start signal
input to the inverter and inverter running signal
signal to the inverter. (STF signal is a forward rotation
signal, and STR is a reverse rotation signal.) Even after
the start signal is turned OFF, the RUN signal is kept
output until the inverter makes the motor to decelerate
and to stop. For the logic check, configure a sequence
considering the inverter's deceleration time.
76
PRECAUTIONS FOR USE OF THE INVERTER
OFF
ON
OFF
ON
RH
DC injection brake
operation point
DC injection
brake operation
Pr. 13 Starting
frequency
Reset
processing
The inverter running signal (RUN signal) is output when
the inverter is running. (RUN signal is assigned to
terminal RUN in the initial setting.)
Check if Y12 signal is being output while inputting a start
ON
STF
Output frequency
(b) Checking the inverter operating status by the inverter
operation ready completion signal
RY
RUN
Time
ON
OFF
ON
OFF
Failsafe system which uses the inverter
(d) Checking the motor operating status by the start signal input to the inverter and inverter output current detection signal
The output current detection signal (Y12 signal) is output when the inverter operates and current flows into the motor.
Check if Y12 signal is being output while inputting a start signal to the inverter. (STF signal is a forward rotation signal,
and STR is a reverse rotation signal.) The Y12 signal is initially set to be output at 150% rated inverter current. Adjust
the level to around 20% using no load current of the motor as reference with Pr.150 Output current detection level.
Like the inverter running signal (RUN signal), even after the start signal is turned OFF, the Y12 signal is kept output until
the inverter stops the output to a decelerating motor. For the logic check, configure a sequence considering the
inverter's deceleration time.
• When using various signals, assign the functions to Pr.190 and
Pr.190 to Pr.196 setting
Positive logic
Negative logic
Output
signal
ALM
99
Pr.196 (output terminal function selection) referring to the
table on the left.
199
RY
11
111
RUN
0
100
Y12
12
112
NOTE
• Changing the terminal assignment using Pr.190 and Pr.196 (output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
• For the details of the parameters and signals, refer to the FR-A800 Instruction Manual (Detailed).
Backup method outside the inverter
Even if the interlock is provided by the inverter status signal, enough failsafe is not ensured depending on the failure status of
the inverter itself. For example, if an inverter CPU fails in a system interlocked with the inverter's fault, start, and RUN signals,
no fault signal will be output and the RUN signal will be kept ON because the inverter CPU is down.
Provide a speed detector to detect the motor speed and current detector to detect the motor current and consider the backup
system such as performing a check as below according to the level of importance of the system.
(a) Start signal and actual operation check
Check the motor running and motor current while the start signal is input to the inverter by comparing the start signal to
the inverter and detected speed of the speed detector or detected current of the current detector. Note that the current
is flowing through the motor while the motor coasts to stop, even after the inverter's start signal is turned OFF. For the
logic check, configure a sequence considering the inverter's deceleration time. In addition, it is recommended to check
the three-phase current when using the current detector.
(b) Command speed and actual operation check
Check for a gap between the actual speed and commanded speed by comparing the inverter's speed command and
the speed detected by the speed detector.
Controller
3
System failure
Inverter
Sensor
(speed, temperature,
air volume, etc.)
To the alarm detection sensor
PRECAUTIONS FOR USE OF THE INVERTER
77
MEMO
78
4
PROTECTIVE
FUNCTIONS
This chapter explains the "PROTECTIVE FUNCTIONS" that operates in
this product.
Always read the instructions before using the equipment.
4.1
4.2
4.3
4.4
Inverter fault and alarm indications ........................................80
Reset method for the protective functions.............................80
Check and clear of the faults history ......................................81
List of fault displays .................................................................83
4
PROTECTIVE FUNCTIONS
79
Inverter fault and alarm indications
4.1
Inverter fault and alarm indications
• When the inverter detects a fault, depending on the nature of the fault, the operation panel displays an error message or
warning, or a protective function activates to trip the inverter.
• When any fault occurs, take an appropriate corrective action, then reset the inverter, and resume the operation. Restarting
the operation without a reset may break or damage the inverter.
• When a protective function activates, note the following points.
Item
Description
Fault output signal
Opening the magnetic contactor (MC) provided on the input side of the inverter at a fault occurrence
shuts off the control power to the inverter, therefore, the fault output will not be retained.
Fault or alarm indication
When a protective function activates, the operation panel displays a fault indication.
Operation restart method
While a protective function is activated, the inverter output is kept shutoff. Reset the inverter to restart
the operation.
• Inverter fault or alarm indications are categorized as below.
Displayed item
Description
Error message
A message regarding an operational fault and setting fault by the operation panel (FR-DU08) and
parameter unit (FR-PU07) is displayed. The inverter does not trip.
Warning
The inverter does not trip even when a warning is displayed. However, failure to take appropriate
measures will lead to a fault.
Alarm
The inverter does not trip. An Alarm (LF) signal can also be output with a parameter setting.
Fault
A protective function activates to trip the inverter and output a Fault (ALM) signal.
NOTE
• For the details of fault displays and other malfunctions, refer to the FR-A800 Instruction Manual (Detailed).
• The past eight faults can be displayed on the operation panel. (Faults history) (For the operation, refer to page 81.)
4.2
Reset method for the protective functions
Reset the inverter by performing any of the following operations. Note that the accumulated heat value of the electronic
thermal relay function and the number of retries are cleared (erased) by resetting the inverter.
The inverter recovers about 1 s after the reset is released.
• On the operation panel, press
to reset the inverter.
(This may only be performed when a fault occurs.)
• Switch power OFF once, then switch it ON again.
ON
OFF
• Turn ON the reset signal (RES) for 0.1 s or more. (If the RES signal
is kept ON, "Err" appears (flickers) to indicate that the inverter is in
a reset status.)
Inverter
RES
SD
NOTE
• OFF status of the start signal must be confirmed before resetting the inverter fault. Resetting an inverter fault with the start
signal ON restarts the motor suddenly.
80
PROTECTIVE FUNCTIONS
Check and clear of the faults history
4.3
Check and clear of the faults history
The operation panel stores the fault indications which appears when a protective function is activated to display the fault
record for the past eight faults. (Faults history)
Check for the faults history
Monitor mode
Parameter setting mode
Function mode
Faults history mode
[Operation for displaying faults history]
Eight past faults can be displayed with the setting dial.
(The latest fault is ended by ".".)
Output frequency
Flickering
Output current ∗1
Flickering
Faults history1
Time
Flickering
Output voltage
Flickering
Press the
setting dial.
Faults history number
Cumulative
energization time ∗2
Day
Latest fault
Faults history number
Faults history2
Flickering
Flickering
First fault in past
Press the
setting dial.
Month
Faults history number
Faults history8
Flickering
When there is no faults
history, "E0" is displayed.


Year
Flickering
Seventh fault in past
4
Press the
setting dial.
When an overcurrent trip occurs by an instantaneous overcurrent, the monitored current value saved in the faults history may be lower than the
actual current that has flowed.
The cumulative energization time and actual operation time are accumulated from 0 to 65535 hours, then cleared, and accumulated again from
0.
PROTECTIVE FUNCTIONS
81
Check and clear of the faults history
Faults history clearing procedure
POINT
• Set Err.CL Fault history clear = "1" to clear the faults history.
Operation
1.
Screen at power-ON
The monitor display appears.
Parameter setting mode
2.
Press
to choose the parameter setting mode. (The parameter number read previously appears.)
Selecting the parameter number
3.
Turn
until
(faults history clear) appears. Press
appears.
Faults history clear
Turn
"
4.
82
" and "
to change the set value to "
". Press
to start clear.
" flicker alternately after parameters are cleared.
•Turn
to read another parameter.
•Press
to show the setting again.
•Press
twice to show the next parameter.
PROTECTIVE FUNCTIONS
to read the present set value. "
" (initial value)
List of fault displays
4.4
List of fault displays
For details, refer to the FR-A800 Instruction Manual (Detailed).
Error message
Operation panel indication
Name
E----
Faults history
HOLD
Operation panel lock
LOCD
Password locked
Operation panel indication
E.OLT
to
Er1 to Er4
Er8
Parameter write error
to
to
rE1 to rE4
rE6 to rE8
Copy operation error
to
E.GF
E.LF
Output phase loss
E.OHT
External thermal relay
operation
E.PTC
PTC thermistor operation
E.OPT
Option fault
E.OP1
Communication option fault
E.16 to E.20
User definition error by the
PLC function
OL
Stall prevention (overcurrent)
E.PE
Parameter storage device fault
oL
Stall prevention (overvoltage)
E.PUE
PU disconnection
TH
Electronic thermal relay
function pre-alarm
E.RET
Retry count excess
PS
PU stop
E.PE2
Parameter storage device fault
SL
Speed limit indication (output
during speed limit)
CP
Parameter copy
E.CPU
E. 5 to E. 7/
CPU fault
E.CTE
Operation panel power supply
short circuit
RS-485 terminals power
supply short circuit
SA
Safety stop
MT1 to MT3
Maintenance timer 1 to 3
UF
USB host error
HP2
HP3
EV
Alarm
Loss of synchronism detection
Output side earth (ground)
fault overcurrent
Error
HP1
FN
E.OC1
E.OC2
E.OC3
E.OV1
Fault
E. SOT
Err.
E.OV2
E.OV3
E.THT
E.THM
E.FIN
to
Fault
Warning
to
Name
Stall prevention stop
Home position return setting
error
Home position return
uncompleted
Home position return
parameter setting error
24 V external power supply
operation
E.P24
24 VDC power fault
E.CDO
Abnormal output current
detection
E.SER
Communication fault (inverter)
E.AIE
Analog input fault
E.USB
USB communication fault
Fan alarm
E.SAF
Safety circuit fault
Overcurrent trip during
acceleration
Overcurrent trip during
constant speed
Overcurrent trip during
deceleration or stop
Regenerative overvoltage trip
during acceleration
Regenerative overvoltage trip
during constant speed
Regenerative overvoltage trip
during deceleration or stop
Inverter overload trip
(electronic thermal relay
function)
Motor overload trip (electronic
thermal relay function)
E.PBT
E.13
Internal circuit fault
Heatsink overheat
to
E.OS
Overspeed occurrence
E.OSD
Speed deviation excess
detection
E.ECT
Signal loss detection
E.OD
Excessive position fault
E.MB1 to
E.MB7
Brake sequence fault
E.EP
Encoder phase fault
E.LCI
4 mA input fault
PROTECTIVE FUNCTIONS
4
83
List of fault displays
Fault
Operation panel indication
to
Name
E.PCH
Pre-charge fault
E.PID
PID signal fault
E. 1 to E. 3
Option fault
E.11
Opposite rotation deceleration
fault
If faults other than the above appear, contact your sales
representative.
84
PROTECTIVE FUNCTIONS
5
PRECAUTIONS FOR
MAINTENANCE AND
INSPECTION
This chapter explains the "PRECAUTIONS FOR MAINTENANCE AND
INSPECTION" for this product.
Always read the instructions before using the equipment.
5.1
5.2
Inspection item..........................................................................86
Measurement of main circuit voltages, currents and
powers .......................................................................................92
5
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
85
Inspection item
The inverter is a static unit mainly consisting of semiconductor devices. Daily inspection must be performed to prevent any
fault from occurring due to the adverse effects of the operating environment, such as temperature, humidity, dust, dirt and
vibration, changes in the parts with time, service life, and other factors.
Precautions for maintenance and inspection
When accessing the inverter for inspection, wait for at least 10 minutes after the power supply has been switched OFF, and
then make sure that the voltage across the main circuit terminals P/+ and N/- of the inverter is not more than 30 VDC using a
tester, etc.
5.1
Inspection item
5.1.1
Daily inspection
Basically, check for the following faults during operation.
• Motor operation fault
• Improper installation environment
• Cooling system fault
• Abnormal vibration, abnormal noise
• Abnormal overheat, discoloration
5.1.2
Periodic inspection
Check the areas inaccessible during operation and requiring periodic inspection.
Consult us for periodic inspection.
• Check and clean the cooling system. .......... Clean the air filter, etc.
• Check the tightening and retighten.............. The screws and bolts may become loose due to vibration, temperature
changes, etc. Check and tighten them.
Tighten them according to the specified tightening torque. (Refer to page 30.)
• Check the conductors and insulating materials for corrosion and damage.
• Measure the insulation resistance.
• Check and change the cooling fan and relay.
NOTE
• When using the safety stop function, periodic inspection is required to confirm that safety function of the safety system
operates correctly.
For more details, refer to the Safety Stop Function Instruction Manual (BCN-A23228-001).
86
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection item
5.1.3
Daily and periodic inspection
Area of
Inspection item
inspection
Description
Inspection
interval
Corrective action at
fault occurrence
Periodic
Daily

Surrounding
environment
Overall unit
General
Check the surrounding air temperature, humidity,
dirt, corrosive gas, oil mist, etc.

Check for unusual vibration and noise.

Check for dirt, oil, and other foreign material.
Check that the main circuit voltages and control
voltages are normal.
(1) Check with megger (across main circuit
terminals and earth (ground) terminal).
(2) Check for loose screws and bolts.
General
(3) Check for overheat traces on the parts.
(4) Check for stain.
(1) Check conductors for distortion.
Conductors, cables (2) Check cable sheaths for breakage and
deterioration (crack, discoloration, etc.).
Check for unusual odor and abnormal increase of
Main circuit Transformer/
reactor
whining sound.
Power supply
voltage
Contact the manufacturer.




Retighten.
Contact the manufacturer.
Clean.
Contact the manufacturer.

Contact the manufacturer.
Stop the equipment and
contact the manufacturer.
Stop the equipment and
contact the manufacturer.
Contact the manufacturer.
Contact the manufacturer.



(3) Judge by visual check

Components check
Overall
Aluminum
electrolytic
capacitor
Display



(1) Check for liquid leakage.
(2) Check for safety valve projection and bulge.
Indication

Inspect the power supply.
Smoothing
aluminum
electrolytic
capacitor
Heatsink
Load
motor


Cooling fan
Cooling
system

Check fault location and
retighten.
Clean.
Check for a damage.
Operation check
Control
circuit,
protective
circuit
Improve the environment.
Terminal block
Relay/contactor
Check that the operation is normal and no
chattering sound is heard.
(1) Check that the output voltages across phases
are balanced while operating the inverter alone.
(2) Check that no fault is found in protective and
display circuits in a sequence protective
operation test.

Contact the manufacturer.

Contact the manufacturer.

Contact the manufacturer.
(1) Check for unusual odor and discoloration.

(2) Check for serious rust development.
(1) Check for liquid leakage in a capacitor and
deformation trace.
(2) Visual check and judge by the life check of the
control circuit capacitor. (Refer to the FR-A800
Instruction Manual (Detailed)).
(1) Check for unusual vibration and noise.


Stop the equipment and
contact the manufacturer.
Contact the manufacturer.

Contact the manufacturer.

(2) Check for loose screws and bolts.

(3)
(1)
(2)
(1)
(2)



Check for stain.
Check for clogging.
Check for stain.
Check that display is normal.
Check for stain.


Meter
Check that reading is normal.

Operation check
Check for vibration and abnormal increase in
operation noise.

Check
by the
user
Replace the fan.
Fix with the fan cover
fixing screws
Clean.
Clean.
Clean.
Contact the manufacturer.
Clean.
Stop the equipment and
contact the manufacturer.
Stop the equipment and
contact the manufacturer.
Oil component of the heat dissipation grease used inside the inverter may leak out. The oil component, however, is not flammable, corrosive, nor
conductive and is not harmful to humans. Wipe off such oil component.
It is recommended to install a voltage monitoring device for checking the voltage of the power supplied to the inverter.
One to two years of periodic inspection cycle is recommended. However, it differs according to the installation environment.
Consult us for periodic inspection.
NOTE
• Continuous use of a leaked, deformed, or degraded smoothing aluminum electrolytic capacitor (as shown in the table above)
may lead to a burst, breakage or fire. Replace such capacitor without delay.
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
87
5
Inspection item
5.1.4
Checking the inverter and converter modules
Preparation
• Disconnect the external power supply cables (R/L1, S/L2, T/L3) and motor cables (U, V, W). (The inverter and the converter
unit (FR-CC2) can be measured with those cables connected.)
• Prepare a tester. (For the resistance measurement, use the 100  range.)
Checking method
Change the polarity of the tester alternately at the inverter terminals R/L1, S/L2, T/L3, U, V, W, P/+, and N/- and check the
electric continuity.
NOTE
• Before measurement, check that the smoothing capacitor is discharged.
• At the time of electric discontinuity, the measured value is almost ∞. When there is an instantaneous electric continuity, due to
the smoothing capacitor, the tester may not indicate ∞. At the time of electric continuity, the measured value is several  to
several tens of . If all measured values are almost the same, although these values are not constant depending on the
module type and tester type, the modules are without fault.
Module device numbers and terminals to be checked
Converter module
Inverter module
P/+
D1
D2
P/+
TR1
TR3
TR5
D3
R/L1
U
C
C
S/L2
V
T/L3
W
D4
D5
D6
N/-
Tester
polarity
module
Converter
D1
D2
D3
module
Inverter
TR1
TR3
TR5
TR4
N/-
Tester
polarity
Result
R/L1,
P/+
Discontinuity
P/+
R/L1,
Continuity
S/L2,
P/+
Discontinuity
P/+
S/L2,
Continuity
T/L3
P/+
Discontinuity
P/+
T/L3
Continuity
U
P/+
Discontinuity
P/+
U
Continuity
V
P/+
Discontinuity
P/+
V
Continuity
W
P/+
Discontinuity
P/+
W
Continuity
TR6
D4
D5
D6
TR4
TR6
TR2
R/L1,
N/S/L2,
N/T/L3
N/-
N/-
TR2
Result
Continuity
R/L1, Discontinuity
N/-
Continuity
S/L2, Discontinuity
N/-
Continuity
T/L3 Discontinuity
U
N/-
Continuity
N/-
U
Discontinuity
V
N/-
Continuity
N/-
V
Discontinuity
W
N/-
Continuity
N/-
W
Discontinuity
(Assumes the use of an analog meter.)
88
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection item
5.1.5
Cleaning
Always run the inverter in a clean status.
When cleaning the inverter, gently wipe dirty areas with a soft cloth immersed in neutral detergent or ethanol.
NOTE
• Do not use solvent, such as acetone, benzene, toluene and alcohol, as these will cause the inverter surface paint to peel off.
• The display, etc. of the operation panel (FR-DU08) and parameter unit (FR-PU07) are vulnerable to detergent and alcohol.
Therefore, avoid using them for cleaning.
5.1.6
Replacement of parts
The inverter consists of many electronic parts such as semiconductor devices.
The following parts may deteriorate with age because of their structures or physical characteristics, leading to reduced
performance or fault of the inverter. For preventive maintenance, the parts must be replaced periodically.
Use the life check function as a guidance of parts replacement.
Part name
Estimated lifespan
Description
Cooling fan
10 years
Replace (as required)
Replace (as required)
Main circuit smoothing capacitor
10 years
On-board smoothing capacitor
10 years
Replace the board (as required)
Relays
—
As required
10 years
Replace (as required)
Main circuit fuse


Estimated lifespan for when the yearly average surrounding air temperature is 40°C.
(without corrosive gas, flammable gas, oil mist, dust and dirt etc.)
Output current (80% of the inverter rating)
NOTE
• For parts replacement, contact the nearest Mitsubishi FA center.
Inverter parts life display
The inverter diagnoses the control circuit capacitor and the cooling fan by itself, and estimates their lives.
The self-diagnostic warning is output when the life span of each part is near its end. It gives an indication of replacement time.
The life warning output can be used as a guideline for life judgment.
Parts
Judgment level
Control circuit capacitor
Estimated remaining life 10%
Cooling fan
Approx. less than 1700 r/min
NOTE
• Refer to the FR-A800 Instruction Manual (Detailed) to perform the life check of the inverter parts.
5
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
89
Inspection item
Replacement procedure of the cooling fan
The replacement interval of the cooling fan used for cooling the parts generating heat such as the main circuit semiconductor
is greatly affected by the surrounding air temperature. When unusual noise and/or vibration are noticed during inspection, the
cooling fan must be replaced immediately.
 Removal
1) Remove the fan cover fixing screws, and remove the fan cover.
2) Disconnect the fan connector and remove the fan block.
3) Remove the fan fixing screws, and remove the fan.
Fan 
3)
Fan block
2)
Fan connection
connector

Fan cover
1)
The number of cooling fans differs according to the inverter capacity.
 Reinstallation
1) After confirming the orientation of the fan, reinstall the fan so that the "AIR FLOW" faces up.
AIR FLOW
<Fan side face>
2) For reconnection of the fan, refer to the above figure.
NOTE
• Installing the fan in the opposite direction of air flow can cause the inverter life to be shorter.
• Prevent the cable from being caught when installing a fan.
• Switch the power OFF before replacing fans. Since the inverter circuits are charged with voltage even after power OFF,
replace fans only when the inverter cover is on the inverter to prevent an electric shock accident.
90
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Inspection item
Smoothing capacitors
A large-capacity aluminum electrolytic capacitor is used for smoothing in the main circuit DC section, and an aluminum
electrolytic capacitor is used for stabilizing the control power in the control circuit. Their characteristics are deteriorated by the
adverse effects of ripple currents, etc. The replacement intervals greatly vary with the surrounding air temperature and
operating conditions. When the inverter is operated in air-conditioned, normal environment conditions, replace the capacitors
about every 10 years.
The appearance criteria for inspection are as follows:
• Case: Check the side and bottom faces for expansion.
• Sealing plate: Check for remarkable warp and extreme crack.
• heck for external crack, discoloration, liquid leakage, etc. Judge that the capacitor has reached its life when the measured
capacitance of the capacitor reduced below 80% of the rating.
NOTE
• The inverter diagnoses the control circuit capacitor by itself and can judge its life. (Refer to the FR-A800 Instruction Manual
(Detailed))
Relays
To prevent a contact fault, etc., relays must be replaced according to the cumulative number of switching times (switching life).
Main circuit fuse
A fuse is used inside the inverter. The replacement intervals vary with the surrounding air temperature and operating
conditions. When the converter unit is operated in air-conditioned, normal environment conditions, replace the capacitors
about every 10 years.
5.1.7
Inverter replacement
The inverter can be replaced with the control circuit wiring kept connected. Before replacement, remove the wiring cover of
the inverter.
1) Loosen the two mounting screws at the both side of the control circuit terminal block. (These screws cannot be removed.)
Slide down the control circuit terminal block to remove it.
Loosen the screws
2) Be careful not to bend the pins of the inverter's control circuit connector, reinstall the control circuit terminal block and fix it
with the mounting screws.
NOTE
• Before starting inverter replacement, switch power OFF, wait for at least 10 minutes, and then check the voltage with a tester
and such to ensure safety.
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
91
5
Measurement of main circuit voltages, currents and powers
5.2
Measurement of main circuit voltages,
currents and powers
Since the voltages and currents on the inverter power supply and output sides include harmonics, measurement data
depends on the instruments used and circuits measured.
When instruments for commercial frequency are used for measurement, measure the following circuits with the instruments
given on the next page.
NOTE
• When installing meters etc. on the inverter output side
When the wiring length between the inverter and the motor is large, the meters and CTs may generate heat due to line-to-line
leakage current. Therefore, choose the equipment which has enough allowance for the current rating.
To measure and display the output voltage and output current of the inverter, it is recommended to use the terminal AM and
FM/CA output functions of the inverter.
Examples of measuring points and instruments
Output voltage
Input voltage
Input current
Output current
Inverter/
converter unit
Ar
Three-phase
power supply
W11
R/L1 U
Au
As
W12
S/L2 V
To the motor
Av
Vv
Vs
At
W21
Vu
Vr
W13
T/L3 W
Vt
Aw
W22
Vw
N/-
P/+
: Electrodynamometer type
V
+
-
Instrument
types
92
: Moving-iron type
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
: Moving-coil type
: Rectifier type
Measurement of main circuit voltages, currents and powers
Converter unit (FR-CC2)
Measuring points and instruments
Item
Measuring point
Power supply
voltage
V1
Power supply side
current
I1
Across R/L1 and S/L2,
S/L2 and T/L3,
T/L3 and R/L1
Moving-iron type AC voltmeter
R/L1, S/L2, T/L3 line
current
Moving-iron type AC ammeter
Power supply side
power
P1
Power supply side
power factor
Pf1
Measuring instrument
Remarks (reference measured value)
Commercial power supply
Within permissible AC voltage fluctuation (Refer
to page 98.)
R/L1, S/L2, T/L3 and
Digital power meter (for inverter) or
Across R/L1 and S/L2,
electrodynamic type single-phase
P1 = W11 + W12 + W13 (3-wattmeter method)
S/L2 and T/L3,
wattmeter
T/L3 and R/L1
Calculate after measuring power supply voltage, power supply side current and power supply side power.
P1
Pf 1 = ------------------------  100 %
3V 1  I 1
Converter output
Across P/+ and N/-
Moving-coil type
(such as tester)
Inverter LED is lit. 1.35  V1
Operation enable
signal
External thermal
relay signal
Reset signal
Across RDI, OH,
RES(+) and SD (for
sink logic)
Moving-coil type
(tester and such may be used.)
(internal resistance 50 k or more)
When open
20 to 30 VDC
ON voltage: 1 V or less
Alarm signal
Across A1 and C1
Across B1 and C1
Moving-coil type
(such as tester)
Across U and V, V and
W, and W and U
Rectifier type AC voltage meter
(moving-iron type cannot
measure.)
Difference between the phases is within 1% of
the maximum output voltage.
U, V and W line
currents
Moving-iron type AC ammeter
Difference between the phases is 10% or lower
of the rated inverter current.
"SD" is
common
Continuity check
Output side
voltage
V2
Output side
current
I2
Output side power
P2
Output side power
factor
Pf2
Frequency setting
signal
Frequency setting
power supply
[Fault]
Continuity
Discontinuity
U, V, W and
Digital power meter (for inverter) or
P2 = W21 + W22
across U and V, V and electrodynamic type single-phase
2-wattmeter method (or 3-wattmeter method)
W
wattmeter
Calculate in similar manner to power supply side power factor.
P2
Pf 2 = ------------------------  100 %
3V 2  I 2
Across 2, 4(+) and 5
Across 1(+) and 5
Across 10(+) and 5
Across 10E(+) and 5
Across AM(+) and 5
Inverter
[Normal]
Across A1 and C1 Discontinuity
Across B1 and C1 Continuity
Across CA(+) and 5
Moving-coil type
(tester and such may be used.)
(internal resistance 50 k or more)
Frequency meter
signal
Across FM(+) and SD
0 to 10 VDC, 4 to 20 mA
0 to 5 VDC and 0 to 10 VDC
5.2 VDC
10 VDC
Approximately 10 VDC at maximum
frequency
(without frequency meter)
Approximately 20 mADC at
maximum frequency
Approximately 5 VDC at maximum
frequency
(without frequency meter)
T1
8VDC
Pulse width T1: Adjust with C0
(Pr.900).
Pulse cycle T2: Set with Pr.55.
(frequency monitor only)
Start signal
Select signal
Reset signal
Output stop signal
Across STF, STR, RH,
RM, RL, JOG, RT, AU,
STOP, CS, RES,
MRS(+) and SD (for
sink logic)
Fault signal
Across A1 and C1
Across B1 and C1
"5" is .
common
"SD" is
common
5
When open
20 to 30 VDC
ON voltage: 1 V or less
Continuity check
Moving-coil type
(such as tester)
[Normal]
Across A1 and C1 Discontinuity
Across B1 and C1 Continuity
[Fault]
Continuity
Discontinuity
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
93
Measurement of main circuit voltages, currents and powers




Use an FFT to measure the output voltage accurately. A tester or general measuring instrument cannot measure accurately.
When the carrier frequency exceeds 5 kHz, do not use this instrument since using it may increase eddy current losses produced in metal parts
inside the instrument, leading to burnout. In this case, use an approximate-effective value type.
When the setting of Pr.195 ABC1 terminal function selection is the positive logic
A digital power meter (designed for inverter) can also be used to measure.
5.2.1
Measurement of powers
Use a digital power meter (for inverter) for the input side of the converter unit (FR-CC2) and the output side of the inverter.
Alternatively, measure using electrodynamic type single-phase wattmeters for the input side of the converter unit and output
side of the inverter in two-wattmeter or three-wattmeter method. As the current is liable to be imbalanced especially in the
input side, it is recommended to use the three-wattmeter method.
Examples of measured value differences produced by different measuring meters are shown below.
An error will be produced by difference between measuring instruments, e.g. power calculation type and two- or threewattmeter type three-phase wattmeter. When a CT is used in the current measuring side or when the meter contains a PT on
the voltage measurement side, an error will also be produced due to the frequency characteristics of the CT and PT.
[Measurement conditions]
[Measurement conditions]
Constant output of 60 Hz or more frequency with a constant- Constant output of 60 Hz or more frequency with a constanttorque (100%). The value obtained by the 3-wattmeter
torque (100%). The value obtained by the 3-wattmeter
method with a 4-pole 3.7 kW induction motor is assumed to
method with a 4-pole 3.7 kW induction motor is assumed to
be 100%.
be 100%.
%
120
%
120
100
100
3-wattmeter method (Electro-dynamometer type)
2-wattmeter method (Electro-dynamometer type)
Clip AC power meter
(For balanced three-phase load)
Clamp-on wattmeter
(Hall device power arithmetic type)
80
60
0
20
40
60
80 100 120Hz
Example of measuring inverter input power
5.2.2
3-wattmeter method (Electro-dynamometer type)
2-wattmeter method (Electro-dynamometer type)
Clip AC power meter
(For balanced three-phase load)
Clamp-on wattmeter
(Hall device power arithmetic type)
80
60
0
20
40
60
80 100 120Hz
Example of measuring inverter output power
Measurement of voltages and use of PT
Converter unit (FR-CC2) input side
As the input side voltage has a sine wave and it is extremely small in distortion, accurate measurement can be made with an
ordinary AC meter.
Inverter output side
Since the output side voltage has a PWM-controlled rectangular wave, always use a rectifier type voltmeter. A needle type
tester cannot be used to measure the output side voltage as it indicates a value much greater than the actual value. A movingiron type meter indicates an effective value which includes harmonics and therefore the value is larger than that of the
fundamental wave. The value monitored on the operation panel is the inverter-controlled voltage itself. Hence, that value is
accurate and it is recommended to monitor values (analog output) using the operation panel.
PT
No PT can be used in the output side of the inverter. Use a direct-reading meter. (A PT can be used in the input side of the
converter unit (FR-CC2).)
94
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
Measurement of main circuit voltages, currents and powers
5.2.3
Measurement of currents
Use moving-iron type meter on the input side of the converter unit (FR-CC2) and the output side of the inverter. However, if
the carrier frequency exceeds 5 kHz, do not use that meter since an overcurrent losses produced in the internal metal parts of
the meter will increase and the meter may burn out. In this case, use an approximate-effective value type.
Since current on the converter unit input side tends to be unbalanced, measurement of three phases is recommended.
Correct value cannot be obtained by measuring only one or two phases. On the other hand, the unbalanced ratio of each
phase of the output side current should be within 10%.
When a clamp ammeter is used, always use an effective value detection type. A mean value detection type produces a large
error and may indicate an extremely smaller value than the actual value. The value monitored on the operation panel is
accurate if the output frequency varies, and it is recommended to monitor values (provide analog output) using the operation
panel.
Examples of measured value differences produced by different measuring meters are shown below.
[Measurement conditions]
[Measurement conditions]
Indicated value of the moving-iron type ammeter is 100%.
Indicated value of the moving-iron type ammeter is 100%.
%
120
100
Moving-iron
type
%
120
Clip AC
power meter
80
Clamp-on wattmeter
current measurement
0
20
40
Clamp meter
60
Clamp meter Clamp-on wattmeter
current measurement
60Hz
Example of measuring converter unit input current
5.2.4
Moving-iron type
100
80
60
Clip AC
power meter
0
20
40
60Hz
Example of measuring inverter output current
Use of CT and transducer
A CT may be used in both the input side of the converter unit and the output side of the inverter. Use the one with the largest
possible VA ability because an error will increase if the frequency gets lower.
When using a transducer, use the effective value calculation type which is immune to harmonics.
5.2.5
Example of measuring converter unit (FR-CC2)
input power factor
Calculate using effective power and apparent power. A power-factor meter cannot indicate an exact value.
Total power factor of the converter unit
=
=
5.2.6
Effective power
Apparent power
Three-phase input power found by the 3-wattmeter method
3  V (power supply voltage)  I (input current effective value)
Measurement of converter output voltage
(across terminals P and N)
The output voltage of the converter is output across terminals P and N and can be measured with a moving-coil type meter
(tester). Although the voltage varies according to the power supply voltage, approximately 540 to 600 V is output when no
load is connected and voltage decreases during driving load operation.
When energy is regenerated from the motor during deceleration, for example, the converter output voltage rises to nearly 800
to 900 V maximum.
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
95
5
Measurement of main circuit voltages, currents and powers
5.2.7
Measurement of inverter output frequency
In the initial setting of the FM-type inverter, a pulse train proportional to the output frequency is output across the pulse train
output terminals FM and SD of the inverter. This pulse train output can be counted by a frequency counter, or a meter
(moving-coil type voltmeter) can be used to read the mean value of the pulse train output voltage. When a meter is used to
measure the output frequency, approximately 5 VDC is indicated at the maximum frequency.
For detailed specifications of the pulse train output terminal FM, refer to the FR-A800 Instruction Manual (Detailed).
In the initial setting of the CA-type inverter, a pulse train proportional to the output frequency is output across the analog
current output terminals CA and 5 of the inverter. Measure the current using an ammeter or tester.
For detailed specifications of the analog current output terminal CA, refer to the FR-A800 Instruction Manual (Detailed).
5.2.8
Insulation resistance test using megger
• For the inverter and the converter unit (FR-CC2), conduct the insulation resistance test on the main circuit only as shown
below and do not perform the test on the control circuit. (Use a 500 VDC megger.)
NOTE
• Before performing the insulation resistance test on the external circuit, disconnect the cables from all terminals of the inverter
and the converter unit so that the test voltage is not applied to the inverter and the converter unit.
• For the continuity test of the control circuit, use a tester (high resistance range) and do not use the megger or buzzer.
Power
supply
R/L1
S/L2
T/L3
Converter
unit
P/+
N/-
P/+
N/-
Inverter
U
V
W
500VDC
megger
Earth (ground) terminal
Pressure test
Do not conduct a pressure test. Deterioration may occur.
96
IM
500VDC
megger
Earth (ground) terminal
5.2.9
Motor
PRECAUTIONS FOR MAINTENANCE AND INSPECTION
6
SPECIFICATIONS
This chapter explains the "SPECIFICATIONS" of this product.
Always read the instructions before using the equipment.
6.1
6.2
6.3
Inverter rating............................................................................98
Common specifications ...........................................................100
Outline dimension drawings....................................................102
6
SPECIFICATIONS
97
Inverter rating
6.1
Inverter rating
 400 V class
• Inverter
Model FR-A842-[ ]
Input power
Output
SLD
LD
Applicable motor
capacity (kW) 
ND (initial setting)
HD
SLD
LD
Rated capacity
(kVA) 
ND (initial setting)
HD
SLD
LD
Rated current (A)
ND (initial setting)
HD
SLD
Overload current LD
rating 
ND (initial setting)
HD
Rated voltage 
Regenerative
brakingtorque
Maximum brake
(When the
torque
converter unit
(FR-CC2) is used)
DC power supply voltage
Control power supply auxiliary input
Permissible control power supply
auxiliary input fluctuation
Protective structure (IEC 60529) 
Cooling system
Approx. mass (kg)







98
315K
07700
355K
08660
400K
09620
450K
10940
500K
12120
400
450
500
—
—
355
400
450
500
—
315
355
400
450
500
280
315
355
400
450
587
660
733
834
924
521
587
660
733
834
465
521
587
660
733
417
465
521
587
660
770
866
962
1094
1212
683
770
866
962
1094
610
683
770
866
962
547
610
683
770
866
110% 60 s, 120% 3 s (inverse-time characteristics) at surrounding air temperature 40°C
120% 60 s, 150% 3 s (inverse-time characteristics) at surrounding air temperature 50°C
150% 60 s, 200% 3 s (inverse-time characteristics) at surrounding air temperature 50°C
200% 60 s, 250% 3 s (inverse-time characteristics) at surrounding air temperature 50°C
Three-phase 380 to 500 V
10% torque/continuous
430 to 780 VDC
Single phase 380 to 500 V 50 Hz/60 Hz 
Frequency 5%, voltage 10%
Open type (IP00)
Forced air cooling
163
163
243
243
243
The applicable motor capacity indicated is the maximum capacity applicable for use of the Mitsubishi 4-pole standard motor.
The rated output capacity indicated assumes that the output voltage is 440 V.
The % value of the overload current rating indicated is the ratio of the overload current to the inverter's rated output current. For repeated duty,
allow time for the inverter and motor to return to or below the temperatures under 100% load.
The maximum output voltage does not exceed the power supply voltage. The maximum output voltage can be changed within the setting range.
However, the maximum point of the voltage waveform at the inverter output side is the power supply voltage multiplied by about .
ND rating reference value
FR-DU08: IP40 (except for the PU connector section)
For the power voltage exceeding 480 V, set Pr.977 Input voltage mode selection. (For details, refer to the FR-A800 Instruction Manual
(Detailed).)
SPECIFICATIONS
Inverter rating
• Converter unit (FR-CC2)
Model FR-CC2-H[ ]
Output
Applicable motor capacity (kW)
Overload current rating 
Rated voltage 
Power supply
Rated input AC voltage/frequency
Permissible AC voltage fluctuation
Permissible frequency fluctuation
Rated input current (A)
Power supply capacity (kVA) 
Protective structure (IEC 60529) 
Cooling system
DC reactor
Approx. mass (kg)





315K
315
355
150% 60 s, 200% 3 s
355K
400K
400
450K
500K
450
500
866
660
962
733
285
288
430 to 780 VDC 
Three-phase 380 to 500 V 50 Hz/60 Hz
Three-phase 323 to 550 V 50 Hz/60 Hz
5%
610
683
770
465
521
587
Open type (IP00)
Forced air cooling
Built-in
210
213
282
The % value of the overload current rating indicated is the ratio of the overload current to the inverter's rated output current. For repeated duty,
allow time for the converter unit and the inverter to return to or below the temperatures under 100% load.
The converter unit output voltage varies according to the input power supply voltage and the load. The maximum point of the voltage waveform
at the converter unit output side is approximately the power supply voltage multiplied by .
The power supply capacity is the value when at the rated output current. It varies by the impedance at the power supply side (including those of
the input reactor and cables).
FR-DU08: IP40 (except for the PU connector section)
The permissible voltage imbalance ratio is 3% or less. (Imbalance ratio = (highest voltage between lines - average voltage between three lines )
/ average voltage between three lines  100)
6
SPECIFICATIONS
99
Common specifications
6.2
Common specifications
Control method
Control specifications
Output frequency range
Frequency
Analog input
setting
resolution Digital input
Frequency Analog input
Digital input
accuracy
Voltage/frequency
characteristics
Starting torque
Torque boost
Acceleration/deceleration
time setting
DC injection brake
(induction motor)
Stall prevention operation
level
Torque limit level
Frequency Analog input
setting
Digital input
signal
Start signal
Indication
Operation specifications
Input signals (twelve
terminals)
Pulse train input
Operational functions
Output signal
Open collector output (five
terminals)
Relay output (two
terminals)
Pulse train output
Pulse train
output (FM
type)
Current
For meter
output
(CA type)
Voltage
output
Operation Operating
status
panel
(FR-DU08) Fault record
100
Soft-PWM control, high carrier frequency PWM control (selectable among V/F control, Advanced magnetic flux vector
control, Real sensorless vector control), Optimum excitation control, vector control, and PM sensorless vector control
0.2 to 590 Hz (The upper-limit frequency is 400 Hz under Advanced magnetic flux vector control, Real sensorless vector
control, vector control, and PM sensorless vector control.)
0.015 Hz/60 Hz (terminal 2, 4: 0 to 10 V/12 bits)
0.03 Hz/60 Hz (0 to 5 V/11 bits or 0 to 20 mA/approx. 11 bits for terminals 2 and 4, 0 to 10 V/12 bits for terminal 1)
0.06 Hz/60 Hz (0 to 5 V/11 bits for terminal 1)
0.01 Hz
Within 0.2% of the max. output frequency (25°C 10°C)
Within 0.01% of the set output frequency
Base frequency can be set from 0 to 590 Hz. Constant-torque/variable-torque pattern or adjustable 5 points V/F can be
selected.
SLD rating: 120% 0.3 Hz, LD rating: 150% 0.3 Hz, ND rating: 200% 0.3 Hz, HD rating: 250% 0.3 Hz
(under Real sensorless vector control or vector control)
Manual torque boost
0 to 3600 s (acceleration and deceleration can be set individually), linear or S-pattern acceleration/deceleration mode,
backlash countermeasures acceleration/deceleration can be selected.
Operation frequency (0 to 120 Hz), operation time (0 to 10 s), operation voltage (0 to 30%) variable
Activation range of stall prevention operation (SLD rating: 0 to 120%, LD rating: 0 to 150%, ND rating: 0 to 220%, HD
rating: 0 to 280%). Whether to use the stall prevention or not can be selected. (V/F control, Advanced magnetic flux vector
control)
Torque limit value can be set (0 to 400% variable). (Real sensorless vector control, vector control, PM sensorless vector
control)
Terminals 2 and 4: 0 to 10 V, 0 to 5 V, 4 to 20 mA (0 to 20 mA) are available.
Terminal 1: -10 to +10 V, -5 to 5 V are available.
Input using the setting dial of the operation panel or parameter unit
Four-digit BCD or 16-bit binary (when used with option FR-A8AX)
Forward and reverse rotation or start signal automatic self-holding input (3-wire input) can be selected.
Low-speed operation command, Middle-speed operation command, High-speed operation command, Second function
selection, Terminal 4 input selection, Jog operation selection, Selection of automatic restart after instantaneous power
failure, flying start, Output stop, Start self-holding selection, Forward rotation command, Reverse rotation command,
Inverter reset
The input signal can be changed using Pr.178 to Pr.189 (input terminal function selection).
100 kpps
Maximum and minimum frequency settings, multi-speed operation, acceleration/deceleration pattern, thermal protection,
DC injection brake, starting frequency, JOG operation, output stop (MRS), stall prevention, regeneration avoidance,
increased magnetic excitation deceleration, frequency jump, rotation display, automatic restart after instantaneous power
failure, electronic bypass sequence, remote setting, automatic acceleration/deceleration, intelligent mode, retry function,
carrier frequency selection, fast-response current limit, forward/reverse rotation prevention, operation mode selection, slip
compensation, droop control, load torque high-speed frequency control, speed smoothing control, traverse, auto tuning,
applied motor selection, gain tuning, RS-485 communication, PID control, PID pre-charge function, easy dancer control,
cooling fan operation selection, stop selection (deceleration stop/coasting), stop-on-contact control, PLC function, life
diagnosis, maintenance timer, current average monitor, multiple rating, orientation control, speed control, torque control,
position control, pre-excitation, torque limit, test run, 24 V power supply input for control circuit, safety stop function,
vibration control
Inverter running, Up to frequency, Overload warning, Output frequency detection, Fault
The output signal can be changed using Pr.190 to Pr.196 (output terminal function selection).
Fault codes of the inverter can be output (4 bits) from the open collector.
50 kpps
Max. 2.4 kHz: one terminal (output frequency)
The monitored item can be changed using Pr.54 FM/CA terminal function selection.
Max. 20 mADC: one terminal (output current)
The monitored item can be changed using Pr.54 FM/CA terminal function selection.
Max. 10 VDC: one terminal (output voltage)
The monitored item can be changed using Pr.158 AM terminal function selection.
Output frequency, output current, output voltage, frequency setting value
The monitored item can be changed using Pr.52 Operation panel main monitor selection.
Fault record is displayed when a fault occurs. Past 8 fault records and the conditions immediately before the fault (output
voltage/current/frequency/cumulative energization time/year/month/date/time) are saved.
SPECIFICATIONS
Common specifications
Protective/
warning
function
Protective
function
Environment
Warning
function
Surrounding air
temperature
Surrounding air humidity
Storage temperature
Atmosphere
Altitude/vibration





Overcurrent trip during acceleration, Overcurrent trip during constant speed, Overcurrent trip during deceleration or stop,
Regenerative overvoltage trip during acceleration, Regenerative overvoltage trip during constant speed, Regenerative
overvoltage trip during deceleration or stop, Inverter overload trip (electronic thermal relay function), Motor overload trip
(electronic thermal relay function), Heatsink overheat, Stall prevention stop, Loss of synchronism detection, Output side
earth (ground) fault overcurrent, Output phase loss, External thermal relay operation, PTC thermistor operation, Option
fault, Communication option fault, Parameter storage device fault, PU disconnection, Retry count excess, Parameter
storage device fault, CPU fault, Operation panel power supply short circuit/RS-485 terminals power supply short circuit, 24
VDC power fault, Abnormal output current detection, Communication fault (inverter), Analog input fault, USB
communication fault, Safety circuit fault, Overspeed occurrence, Speed deviation excess detection, Signal loss
detection, Excessive position fault, Brake sequence fault, Encoder phase fault, 4 mA input fault, Pre-charge
fault, PID signal fault, Option fault, Opposite rotation deceleration fault, Internal circuit fault
Fan alarm, Stall prevention (overcurrent), Stall prevention (overvoltage), Electronic thermal relay function pre-alarm, PU
stop, Speed limit indication (output during speed limit), Parameter copy, Safety stop, Maintenance timer 1 to 3, USB
host error, Home position return setting error, Home position return uncompleted, Home position return parameter
setting error, Operation panel lock, Password locked, Parameter write error, Copy operation error, 24 V external
power supply operation
-10°C to +50°C (non-freezing) (LD, ND, HD ratings)
-10°C to +40°C (non-freezing) (SLD rating)
With circuit board coating: 95% RH or less (non-condensing)
Without circuit board coating: 90% RH or less (non-condensing)
-20°C to +65°C
Indoors (without corrosive gas, flammable gas, oil mist, dust and dirt, etc.)
Maximum 1000 m above sea level, 2.9 m/s2 or less at 10 to 55 Hz (directions of X, Y, Z axes)
Available only when the option (FR-A8AP) is mounted.
In the initial setting, it is limited to 150% by the torque limit level.
Temperature applicable for a short time, e.g. in transit.
For the installation in an altitude above 1,000 m (up to 2,500 m), derate the rated current 3% per 500 m.
This protective function is not available in the initial status.
6
SPECIFICATIONS
101
Outline dimension drawings
6.3
6.3.1
Outline dimension drawings
Inverter outline dimension drawings
(15)
185
23
1296
8-φ25 hole
1300
1330
3-φ12 hole
(70)
4.5
4.5
17
200
200
15
12
70
(17)
FR-A842-07700(315K), FR-A842-08660(355K)
185
440
540
(Unit: mm)
185
12
240
240
680
(100)
15
100
23
1546
(17)
8-φ25 hole
1550
1580
3-φ12 hole
4.5
4.5
185
17
(15)
FR-A842-09620(400K), FR-A842-10940(450K), FR-A842-12120(500K)
440
(Unit: mm)
102
SPECIFICATIONS
Outline dimension drawings
Operation panel (FR-DU08)
Outline drawing
Panel cutting dimension drawing
Panel
3.2max
27.8
5
72.5
2-M3 screw
3
66
72
3
Parameter unit
connection cable
(FR-CB2[ ] )(option)
20
FR-DU08
78.5
72.5
3
21
22
3
120 or more∗1
66
Air-bleeding
hole
Operation panel
connection connector
(FR-ADP)(option)
16
17
∗1
Denotes the space required to connect an optional parameter unit
connection cable (FR-CB2[ ]). When using another cable, leave the
space required for the cable specification.
(Unit: mm)
6
SPECIFICATIONS
103
Outline dimension drawings
6.3.2
Converter unit (FR-CC2) outline dimension
drawings
FR-CC2-H315K, FR-CC2-H355K
23
(15)
185
8-φ25 hole
(17)
3-φ12 hole
∗1
200
200
(100)
1296
1330
4.5
4.5
17
12
100
15
1300
∗1
185
600
440
(Unit: mm)
FR-CC2-H400K, FR-CC2-H450K, FR-CC2-H500K
185
8-φ25 hole
23
(17)
(15)
3-φ12 hole
12
200
200
(100)
600

104
Do not remove the cover on the side of the converter unit.
SPECIFICATIONS
1546
∗1
4.5
440
4.5
185
17
100
15
1550
1580
∗1
(Unit: mm)
APPENDIX
APPENDIX provides the reference information for use of this
product.
Refer to APPENDIX as required.
Appendix1 For customers replacing the conventional model
with this inverter ...........................................................106
Appendix2 Comparison with FR-A840............................................108
Appendix3 Instructions for compliance with the EU Directives ..109
Appendix4 Instructions for UL and cUL .........................................111
APPENDIX
105
Appendix1
Appendix1.1
For customers replacing the
conventional model with this
inverter
Replacement of the FR-A740 series
Difference and compatibility with FR-A740 series
Item
FR-A740
FR-A842
V/F control
Advanced magnetic flux vector control
Real sensorless vector control
Vector control (with plug-in option used)
PM sensorless vector control (IPM motor/SPM motor)
Added functions
-
USB host function
Safety stop function
etc.
V/F control
Advanced
magnetic flux
vector control
Real sensorless
vector control
Vector control
PM sensorless
vector control
(MM-CF)
400 Hz
590 Hz
120 Hz
400 Hz
120 Hz
400 Hz
120 Hz
400 Hz
300 Hz
400 Hz
PID control
Turn the X14 signal ON to enable PID control.
The X14 signal does not need to be assigned. (PID control
is available by the Pr.128 setting.)
The PID pre-charge function and dancer control are
added.
Turn the CS signal ON to restart.
CS signal assignment not required. (Restart is enabled
with the Pr.57 setting only.)
Maximum output frequency
Control method
V/F control
Advanced magnetic flux vector control
Real sensorless vector control
Vector control (with plug-in option used)
PM sensorless vector control (IPM motor)
Automatic restart after
instantaneous power
failure
Number of motor poles The V/F switchover (X18) signal is valid when
V/F control switching Pr.81 = "12 to 20 (2 to 10 poles)".
Pr.81= "12 (12 poles)"
X18 is valid regardless of the Pr.81 setting. (The Pr.81
settings "14 to 20" are not available.)
PTC thermistor input
Input from the terminal AU
(The function of the terminal AU is switched by a
switch.)
Input from the terminal 2.
(The function of the terminal 2 is switched by the Pr.561
setting.)
USB connector
B connector
Mini B connector
Control circuit terminal block Removable terminal block (screw type)
Removable terminal block (spring clamp type)
Terminal response level
The FR-A800's I/O terminals have better response level than the FR-A700's terminals. By setting Pr.289
Inverter output terminal filter and Pr.699 Input terminal filter, the terminal response level can be
compatible with that of FR-A700. Set to approximately 5 to 8 ms and adjust the setting according to the
system.
PU
FR-DU07 (4-digit LED)
FR-PU07
FR-DU08 (5-digit LED)
FR-PU07 (Some functions, such as parameter copy, are
unavailable.)
FR-DU07 is not supported.
Plug-in option
Dedicated plug-in options (not interchangeable)
Communication option
Connected to the connector 3.
Installation size
Installation size is not compatible. (New mounting holes are required.)
Connected to the connector 1.
Converter
Built in for all capacities
The converter unit (FR-CC2) is required.
DC reactor
DC reactor (FR-HEL) is provided.
Built in the converter unit (FR-CC2)
Installation precautions
• Removal procedure of the front cover is different. (Refer to page 15.)
• Plug-in options of the FR-A700 series are not compatible.
• Operation panel (FR-DU07) cannot be used.
106
APPENDIX
Wiring precautions
• The spring clamp type terminal block has changed to the screw type. Use of blade terminals is recommended.
Instructions for continuous use of the FR-PU07 (parameter unit)
• For the FR-A800 series, many functions (parameters) have been added. When setting these parameters, the parameter
names and setting ranges are not displayed.
• Only the parameter with the numbers up to "999" can be read and set. The parameters with the numbers after "999" cannot
be read or set.
• Many protective functions have been added for the FR-A800 series. These functions are available, but all faults are
displayed as "Fault". When the faults history is checked, "ERR" appears. Added faults will not appear on the parameter
unit. (However, MT1 to MT3 are displayed as MT.)
• Parameter copy/verification function are not available.
Copying parameter settings
• The FR-A700 series' parameter setting can be easily copied to the FR-A800 series by using the setup software (FR
Configurator2). (Not supported by the the setup software FR-SW3-SETUP or older.)
Appendix1.2
Replacement of the FR-A500(L) series
Installation precautions
• Installation size is not compatible. (New mounting holes are required.)
• The optional converter unit (FR-CC2) is required.
APPENDIX
107
Appendix2
Comparison with FR-A840
Item
FR-A840
FR-A842
Power failure time
deceleration-to-stop
function
(Pr.261 to Pr.266, Pr.294,
Pr.668)
With the parameter
Without the parameter
Pr.30 Regenerative
function selection
Setting ranges "0 to 2, 10, 11, 20, 21, 100, 101, 110,
111, 120, 121"
Initial value "0"
Setting ranges "2, 10, 11, 102, 110, 111"
Initial value "10"
With the parameter
Without the parameter
Regenerative brake duty
With (Acceptable)
Regenerative brake duty
Without (Unacceptable)
DC feeding operation permission (X70), DC feeding
cancel (X71)
With (Acceptable)
DC feeding operation permission (X70), DC feeding
cancel (X71)
Without (Unacceptable)
Initial value "24" (MRS)
Initial value "10" (X10)
Instantaneous power failure/undervoltage (IPF),
During deceleration at occurrence of power failure
(retained until release) (Y46), Regenerative brake
pre-alarm (RBP), DC current feeding (Y85), Main
circuit capacitor life (Y87), Inrush current limit circuit
life (Y89)
With (Acceptable)
Instantaneous power failure/undervoltage (IPF),
During deceleration at occurrence of power failure
(retained until release) (Y46), Regenerative brake
pre-alarm (RBP), DC current feeding (Y85), Main
circuit capacitor life (Y87), Inrush current limit circuit
life (Y89)
Without (Unacceptable)
Initial value "2" (IPF)
Initial value "9999" (No function)
With the parameter
Without the parameter
Initial value "0" (NO contact specification)
Initial value "1"(NC contact specification)
With the parameter
Without the parameter
Regenerative brake pre-alarm (RB), Instantaneous
power failure (E.IPF), Undervoltage (E.UVT), Input
phase loss (E.ILF), Brake transistor alarm detection
(E.BE), Inrush current limit circuit fault (E.IOH)
Available
Regenerative brake pre-alarm (RB), Instantaneous
power failure (E.IPF), Undervoltage (E.UVT), Input
phase loss (E.ILF), Brake transistor alarm detection
(E.BE), Inrush current limit circuit fault (E.IOH)
Not available
Pr.70 Special
regenerative brake duty
Monitor function
(Pr.52, Pr.54, Pr.158,
Pr.774 to Pr.776, Pr.992,
Pr.1027 to Pr.1034)
Input terminal function
selection
(Pr.178 to Pr.189)
Pr.187 MRS terminal
function selection
Output terminal function
assignment selection
(Pr.190 to Pr.196, Pr.313
to Pr.322)
Pr.192 IPF terminal
function selection
Inrush current limit
circuit life display, Main
circuit capacitor life
display
(Pr.256, Pr.258, Pr.259)
Pr.599 X10 terminal input
selection
Pr.872 Input phase loss
protection selection
Warning, protective
functions
108
APPENDIX
Appendix3
Instructions for compliance with
the EU Directives
The EU Directives are issued to standardize different national regulations of the EU Member States and to facilitate free
movement of the equipment, whose safety is ensured, in the EU territory.
Since 1996, compliance with the EMC Directive that is one of the EU Directives has been legally required. Since 1997,
compliance with the Low Voltage Directive, another EU Directive, has been also legally required. When a manufacturer
confirms its equipment to be compliant with the EMC Directive and the Low Voltage Directive, the manufacturer must declare
the conformity and affix the CE marking.
• The authorized representative in the EU
The authorized representative in the EU is shown below.
Company name: Mitsubishi Electric Europe B.V.
Address: Gothaer Strasse 8, 40880 Ratingen, Germany
• Note
We declare that this inverter conforms with the EMC Directive in industrial environments and affix the CE marking on the
inverter. When using the inverter in a residential area, take appropriate measures and ensure the conformity of the inverter
used in the residential area.
EMC Directive
We declare that this inverter conforms with the EMC Directive and affix the CE marking on the inverter.
• EMC Directive 2004/108/EC
• Standard(s): EN61800-3:2004 (Second environment / PDS Category "C3")
• This inverter is not intended to be used on a low-voltage public network which supplies domestic premises.
• Radio frequency interference is expected if used on such a network.
• The installer shall provide a guide for installation and use, including recommended mitigation devices.
Note:
First environment
Environment including residential buildings. Includes building directly connected without a transformer to the low voltage
power supply network which supplies power to residential buildings.
Second environment
Environment including all buildings except buildings directly connected without a transformer to the lower voltage power
supply network which supplies power to residential buildings.
 Note
Set the EMC filter valid and install the inverter and perform wiring according to the following instructions.




The converter unit is equipped with an EMC filter. Enable the EMC filter. (For details, refer to page 66.)
Connect the inverter and the converter unit to an earthed power supply.
Install a motor and a control cable written in the EMC Installation Manual (BCN-A21041-204) according to the instruction.
Confirm that the inverter and the converter unit conform with the EMC Directive as the industrial drives application for final installation.
APPENDIX
109
Low Voltage Directive
We have self-confirmed our inverters as products compliant to the Low Voltage Directive (Conforming standard EN 61800-51) and affix the CE marking on the inverters.
 Outline of instructions

Do not use an earth leakage current breaker as an electric shock protector without connecting the equipment to the earth. Connect the
equipment to the earth (ground) securely.
 Wire the earth terminal independently. (Do not connect two or more cables to one terminal.)
 Use the cable sizes on page 30 under the following conditions.
Surrounding air temperature 40°C (104°F) maximum
If conditions are different from above, select appropriate wire according to EN60204 Appendix C TABLE 5.
 Use a tinned (plating should not include zinc) crimping terminal to connect the earth (ground) cable. When tightening the screw, be careful not to
damage the threads.
For use as a product compliant with the Low Voltage Directive, use PVC cable whose size is indicated on page 30.
 Use the molded case circuit breaker and magnetic contactor which conform to the EN or IEC Standard.
 DC current may flow from the inverter to a protective earth (ground) conductor. When using a residual current device (RDC) or residual current
monitor (RDM), connect a type B RCD or RCM to the power supply side.
 Use the inverter under the conditions of overvoltage category II (usable regardless of the earth (ground) condition of the power supply),
overvoltage category III (usable with the earthed-neutral system power supply, 400 V class only) and pollution degree 2 or lower specified in
IEC664.
To use the inverter under the conditions of pollution degree 2, install it in the enclosure of IP2X or higher.
To use the inverter under the conditions of pollution degree 3, install it in the enclosure of IP54 or higher.
 On the input and output of the inverter and the converter unit, use cables of the type and size set forth in EN60204 Appendix C.
 The operating capacity of the relay outputs (terminal symbols A1, B1, C1, A2, B2, C2) should be 30 VDC, 0.3 A. (Relay output has basic
isolation from the internal circuit of the inverter and the converter unit.)
 Control circuit terminals on page 24 are safely isolated from the main circuit.
 Environment (For the detail, refer to page 17.)
During operation
During
Transportation
In storage
Surrounding air
temperature
-10 to +40°C
-20 to +65°C
-20 to +65°C
Ambient
humidity
95%RH or less
95%RH or less
95%RH or less
Maximum
altitude
2500 m
2500 m
10000 m
 Wiring protection
Class T, Class J, Class CC, or Class L fuse must be provided.
FR-CC2-[ ]
H315K
H355K
Rated fuse voltage (V)
500 V or more
Fuse maximum allowable rating (A) 
1100

1200
H400K
1350
H450K
1500
H500K
1800
Maximum allowable rating by US National Electrical Code. Exact size must be chosen for each installation.
 Short circuit ratings
Suitable For Use in A Circuit Capable of Delivering Not More Than 100 kA rms Symmetrical Amperes, 550 V or 600 V
Maximum.
110
APPENDIX
Appendix4
Instructions for UL and cUL
(Standard to comply with: UL 508C, CSA C22.2 No.14)
 General Precaution
CAUTION - Risk of Electric Shock The bus capacitor discharge time is 10 minutes. Before starting wiring or inspection, switch power off, wait for more than 10 minutes, and check for residual
voltage between terminal P/+ and N/- with a meter etc., to avoid a hazard of electrical shock.
ATTENTION - Risque de choc électrique La durée de décharge du condensateur de bus est de 10 minutes. Avant de commencer le câblage ou l’inspection, mettez l’appareil hors tension et attendez plus
de 10 minutes.
 Installation
The FR-A802 inverters with the below types of converter unit have been approved as products for use in enclosure.
Design the enclosure so that the surrounding air temperature, humidity and ambience of the inverter will satisfy the above specifications. (Refer to page 17.)
 Wiring protection
For installation in the United States, Class T, Class J, Class CC, or Class L fuse must be provided, in accordance with the National Electrical Code and any
applicable local codes.
For installation in Canada, Class T, Class J, Class CC, or Class L fuse must be provided, in accordance with the Canadian Electrical Code and any applicable
local codes.
FR-CC2-[ ]
H315K
H355K
Rated fuse voltage (V)
500 V or more
Fuse maximum allowable rating (A) 
1100

1200
H400K
1350
H450K
1500
H500K
1800
Maximum allowable rating by US National Electrical Code. Exact size must be chosen for each installation.
 Wiring to the power supply and the motor
For wiring the input (R/L1, S/L2, T/L3) terminals of the converter unit and output (U, V, W) terminals of the inverter, use the UL listed copper, stranded wires (rated
at 75°C) and round crimping terminals. Crimp the crimping terminals with the crimping tool recommended by the terminal maker.
 Short circuit ratings
Suitable For Use in A Circuit Capable of Delivering Not More Than 100 kA rms Symmetrical Amperes, 550 V or 600 V Maximum.
 Motor overload protection
When using the electronic thermal relay function as motor overload protection, set the rated motor current in Pr.9 Electronic thermal O/L relay.
Operation characteristics of electronic thermal relay function
Operation time (min)
Pr.9 = 100% setting
of inverter rating∗2
30Hz
or more∗3
70
30Hz
or more∗3
20Hz
60
10Hz
20Hz
10Hz
6Hz
6Hz
0.5Hz
50 0.5Hz
240
Operation time (s)
(s) unit display in this region
(min) unit display in
this region
Pr.9 = 50% setting
of inverter rating∗1, 2
Operation region
Region on the right of
characteristic curve
Non-operation region
Region on the left of
characteristic curve
Characteristic when
electronic thermal relay
function for motor
protection is turned off
(When Pr.9 setting is 0(A))
This function detects the overload (overheat) of the motor and trips the
inverter by stopping the operation of the transistor at the inverter output side.
(The operation characteristic is shown on the left.)
• Mitsubishi constant-torque motor
(1) Set one of "1", "13" to "16" in Pr.71. (This setting will enable the 100%
constant-torque characteristic in the low-speed range.)
(2) Set the rated current of the motor in Pr.9.


180
Range for
the transistor
protection∗4
120
60


52.5%
105%
100
50
150
Inverter output power (%)
(% to the inverter rated current)
230
When a value 50% of the inverter rated output current (current value)
is set in Pr.9
The % value denotes the percentage to the rated inverter current. It is
not the percentage to the rated motor current.
When you set the electronic thermal relay function dedicated to the
Mitsubishi constant-torque motor, this characteristic curve applies to
operation at 6 Hz or higher.
Transistor protection is activated depending on the temperature of the
heatsink. The protection may be activated even with less than 150%
depending on the operating conditions.
NOTE
• The internal accumulated heat value of the electronic thermal relay function is reset by inverter power reset and reset signal input. Avoid unnecessary reset and powerOFF.
• Install an external thermal relay (OCR) between the inverter and motors to operate several motors, a multi-pole motor or a dedicated motor with one inverter. Note that
the current indicated on the motor rating plate is affected by the line-to-line leakage current (refer to Instruction Manual (Detailed)) when selecting the setting for an
external thermal relay.
• The cooling effect of the motor drops during low-speed operation. Use a thermal protector or a motor with built-in thermistor.
• When the difference between the inverter and motor capacities is large and the setting is small, the protective characteristics of the electronic thermal relay function will
be deteriorated. In such case, use an external thermal relay.
• A dedicated motor cannot be protected by an electronic thermal O/L relay. Use an external thermal relay.
• If the electronic thermal O/L relay is set to 5% or lower of the rated inverter current, the electronic thermal O/L relay may not operate.
• Motor over temperature sensing is not provided by the drive.
APPENDIX
111
About the enclosed CD-ROM
The enclosed CD-ROM contains PDF copies of the manuals related to this product.
Before using the enclosed CD-ROM
• The copyright and other rights of the enclosed CD-ROM all belong to Mitsubishi Electric Corporation.
• No part of the enclosed CD-ROM may be copied or reproduced without the permission of Mitsubishi Electric Corporation.
• Specifications of the enclosed CD-ROM are subject to change for modification without notice.
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Adobe and Adobe Reader are registered trademarks of Adobe Systems Incorporated.
Pentium is a registered trademark of Intel Corporation of the United States and/or other countries.
Other company and product names herein are the trademarks and registered trademarks of their respective owners.
• Warranty
We do not provide a warranty against defects in the enclosed CD-ROM and related documents.
NOTE
• This is a personal computer dedicated CD-ROM. Do not attempt to play it on ordinary audio devices. The loud volume may
damage hearing and speakers.
When playing the enclosed CD-ROM on Windows OS
 Operating environment
• The following system is required to read instruction manuals contained in the enclosed CD-ROM.
Item
Specifications
OS
Microsoft Windows XP Professional or Home Edition,
Windows XP Tablet PC Edition, Windows vista, Windows 7, Windows 8
CPU
Intel Pentium or better processor
Memory
128 MB of RAM
Hard disk
90 MB of available hard-disk space
CD-ROM drive
Double speed or more (more than quadruple speed is recommended)
Monitor
800x600 dot or more
Application
Adobe Reader 7.0 or more
Internet Explorer 6.0 or more
 Operating method of the enclosed CD-ROM
• How to read instruction manuals
Step 1. Start Windows and place the enclosed CD-ROM in the CD-ROM drive.
Step 2. The main window automatically opens by the web browser.
Step 3. Choose your language by a language choice menu of the page left edge.
Step 4. Click a manual you want to read in the "INSTRUCTION MANUAL" list.
Step 5. PDF manual you clicked opens.
• Manual opening of the enclosed CD-ROM
Step 1. Start Windows and place the enclosed CD-ROM in the CD-ROM drive.
Step 2. Select a CD-ROM drive (example: D drive) of "My computer" and click the right mouse button. Then, click "open"
in the context menu.
Step 3. Open "index.html" in the opened folder.
Step 4. The main window opens by the web browser. Operates according to the steps from "Step 3" of "How to read
instruction manuals"
• PDF data of the instruction manual are stored in "MANUAL" folder on the enclosed CD-ROM.
112
MEMO
113
REVISIONS
*The manual number is given on the bottom left of the back cover.
Print Date
Feb. 2014
*Manual Number
IB(NA)-0600534ENG-A
Revision
First edition
For Maximum Safety
• Mitsubishi inverters are not designed or manufactured to be used in equipment or systems in situations that
can affect or endanger human life.
• When considering this product for operation in special applications such as machinery or systems used in
passenger transportation, medical, aerospace, atomic power, electric power, or submarine repeating
applications, please contact your nearest Mitsubishi sales representative.
• Although this product was manufactured under conditions of strict quality control, you are strongly advised to
install safety devices to prevent serious accidents when it is used in facilities where breakdowns of the product
are likely to cause a serious accident.
• Please do not use this product for loads other than three-phase induction motors.
114
IB(NA)-0600534ENG-A
A800
INVERTER
A800
FR-A802 (SEPARATED CONVERTER TYPE)
INSTRUCTION MANUAL (HARDWARE)
FR-A842-07700(315K) to 12120(500K)
INVERTER
IB(NA)-0600534ENG-A(1402)MEE Printed in Japan
Model
FR-A802 INSTRUCTION
MANUAL (HARDWARE)
Model code
1A2-P54
Specifications subject to change without notice.
FR-A802 INSTRUCTION MANUAL (HARDWARE)
HEAD OFFICE: TOKYO BUILDING 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
A
INTRODUCTION
1
INSTALLATION AND WIRING
2
PRECAUTIONS FOR USE OF
THE INVERTER
3
PROTECTIVE FUNCTIONS
4
PRECAUTIONS FOR
MAINTENANCE AND
INSPECTION
SPECIFICATIONS
5
6
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