Appendix. Omron L7
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10
Appendix
This chapter provides precautions for the Inverter, motor, and peripheral devices and also provides lists of constants.
Inverter Application Precautions .......................................10-2
Motor Application Precautions ..........................................10-4
User Constants .................................................................10-5
Inverter Application Precautions
Selection
Observe the following precautions when selecting an Inverter.
Installing Reactors
A large peak current can flow in the power input circuit when the Inverter is connected to a large-capacity power transformer (600 kVA or higher) or when switching a phase shifting capacitor. Excessive peak current can destroy the converter section. To prevent this, install a DC or AC reactor to improve the power supply power factor.
If a thyristor converter, such as a DC drive, is connected in the same power supply system, connect a DC or
AC reactor regardless of the power supply conditions shown in the following diagram.
Power supply
(kVA)
DC or AC reactor required
DC or AC reactor not required
Inverter capacity (kVA)
Installation
Observe the following precautions when installing an Inverter.
Installation in Enclosures
Install the Inverter in a clean location where it is not subjected to oil mist, dust, and other contaminants, or install the Inverter in a completely enclosed panel. Provide cooling measures and sufficient panel space so that the temperature surrounding the Inverter does not exceed the allowable temperature. Do not install the Inverter on wood or other combustible materials.
Installation Direction
Mount the Inverter vertically to a wall or other vertical surface.
10
Settings
Observe the following precautions when making settings for an Inverter.
Upper Limits
The maximum output frequency can be set up to 120Hz. Setting the output frequency too high can damage the machine. So pay attention to the mechanical system and observe required limits for the output frequency.
DC Injection Braking
If the DC Injection Braking Current or the Braking Time are set too high the motor can overheat what can damage the motor
10-
2
Acceleration/Deceleration Times
The motor's acceleration and deceleration times are determined by the torque generated by the motor, the load torque, and the load's inertial moment (GD
2
/4). If the stall prevention functions are activated during acceleration or deceleration, it might be necessary to increase the acceleration or deceleration time.
To reduce the acceleration or deceleration times, increase the capacity of the motor and Inverter.
Handling
Observe the following precautions during wiring or maintenance of an Inverter.
Wiring Check
The Inverter will be internally damaged if the power supply voltage is applied to output terminal U, V, or W.
Check wiring for any mistakes before supplying power. Check all wiring and control sequences carefully.
Magnetic Contactor Installation
If a magnetic contactor is installed in the power supply line, do not exceed one start per hour. Switching more often can damage the inrush current prevention circuit.
Maintenance and Inspections
After turning OFF the main circuit power supply it can take several minutes before the DC bus is discharged completely. The CHARGE LED, indicating if the DC bus is charged, glows above a voltage of 10VDC.
10
10-
3
10
10-
4
Motor Application Precautions
Using the Inverter for an Existing Standard Motor
Observe the following precautions when using an Inverter for an existing standard motor.
Low Speed Ranges
If a standard cooled motor is used at low speed the cooling effects are diminished. If the motor is used in constant torque applications in low speed area the motor may overheat. If full torque is required at low speed continuously an externally cooled motor must be used.
Installation Withstand Voltage
If the inverter is used with an input voltage of 440 V or higher and long motor cables, voltage spikes at the motor terminals may occur which can damage the motor windings. Please ensure that the motor insulation class is sufficient.
Noise
The noise generated in the motor depends on the carrier frequency. The higher the setting, the less is the generated noise.
Using the Inverter for Special Motors
Observe the following precautions when using a special motor.
Pole-changing Motor
The rated input current of pole-changing motors differs from that of standard motors. Select an appropriate
Inverter according to the maximum current of the motor.
Single-phase Motor
Do not use an Inverter for a single-phase motor. These motors are often equipped with capacitors Any capacitor directly connected to the inverter output may damage the Inverter.
User Constants
The factory settings of each parameter are given in the following table. They are for a 200 V Class Inverter with 3.7 kW.
No.
Name
Factory
Setting
Setting
A1-00 Language selection for Digital Operator display 0 b1-01 b1-02 b1-06 b1-08 b2-08 b4-01 b4-02 b6-01
A1-01 Parameter access level
A1-02 Control method selection
A1-03 Initialize
A1-04 Password
A1-05 Password setting
A2-01 to
A2-32
User specified parameters
Reference source selection
RUN command source selection
Control input scan
Run command selection in programming modes
Magnetic flux compensation volume
Timer function ON-delay time
Timer function OFF-delay time
Dwell frequency at start b6-02 b6-03
Dwell time at start
Dwell frequency at stop b6-04 Dwell time at stop
C1-01 Acceleration time 1
C1-02 Deceleration time 1
C1-03 Acceleration time 2
C1-04 Deceleration time 2
C1-05 Acceleration time 3
C1-06 Deceleration time 3
C1-07 Acceleration time 4
C1-08 Deceleration time 4
C1-09 Emergency stop time
C1-10 Accel/decel time setting unit
C1-11 Accel/decel time switching frequency
C2-01 S-curve characteristic time at acceleration start
C2-02 S-curve characteristic time at acceleration end
C2-03 S-curve characteristic time at deceleration start
C2-04 S-curve characteristic time at deceleration end
C2-05 S-curve Characteristic time below leveling speed
C3-01 Slip compensation gain
C3-02 Slip compensation delay time
C3-03 Slip compensation limit
C3-04 Slip compensation selection during regeneration
C3-05 Output voltage limit operation selection
C4-01 Torque compensation gain
1
0.0 Hz
0.5 sec.
0.5 sec.
0.5 sec.
0.5 sec.
0.50 sec.
1.0
2000 msec
200%
1
1
1.00
0%
0.0 sec.
0.0 sec.
0.0 Hz
1
1
0
1
0.0 sec.
0.0 Hz
0.0 sec.
10.0 sec.
0
0
2
0
0
–
1.5 s
C4-02 Torque compensation delay time constant
C4-03 Starting torque compensation (FWD)
C4-04 Starting torque compensation (REV)
C4-05 Starting torque compensation time constant
200 msec
*1
0.0%
0.0%
10 msec
10
10-
5
10
No.
C5-01 ASR proportional (P) gain 1
C5-02 ASR integral (I) time 1
C5-03 ASR proportional (P) gain 2
C5-04 ASR integral (I) time 2
C6-11 d1-01 d1-02 d1-03 d1-04 d1-05 d1-06 d1-07
C5-06 ASR delay time
C5-07 ASR switching frequency
C5-08 ASR integral (I) limit
C5-09 ASR proportional (P) gain 3
C5-10 ASR integral (I) time 3
C5-15 ASR gain (P) during encoder offset tuning
C6-02 Carrier frequency selection
C6-06 PWM method selection
Carrier frequency for PM motor control
Frequency reference 1
Frequency reference 2
Frequency reference 3
Frequency reference 4
Frequency reference 5
Frequency reference 6
Frequency reference 7 d1-08 d1-09
Frequency reference 8
Frequency reference 9 Vn d1-10 d1-11 d1-12 d1-13
Frequency reference 10 V
1
Frequency reference 11 V
2
Frequency reference 12 V
3
Frequency reference 13 V r
Frequency reference 14 Inspection d1-14 d1-17 d1-18 d1-19 d6-03 d6-06
Jog frequency reference / Leveling speed
Speed priority selection
Second motor speed
Field forcing function selection
Field forcing function Limit
E1-01 Input voltage setting
E1-04 Max. output frequency (FMAX)
E1-05 Max. output voltage (VMAX)
E1-06 Base frequency (FA)
E1-07 Mid. output frequency (FB)
E1-08 Mid. output frequency voltage (VB)
E1-09 Min. output frequency (FMIN)
E1-10 Min. output frequency voltage (VMIN)
E1-13 Base voltage (VBASE)
E2-01 Motor rated current
E2-02 Motor rated slip
E2-03 Motor no-load current
E2-04 Number of motor poles
E2-05 Motor line-to-line resistance
E2-06 Motor leak inductance
Name
10-
6
0.00 Hz
0.00 Hz
0.00 Hz
25 Hz
4.00 Hz
1
0.00 Hz
0
400%
*1
50.0 Hz
*1
50.0 Hz
*1
*1
*1
*1
0.0 V
*1
*1
*1
4 poles
*1
*1
Factory
Setting
40
*1
0.5
*1
20
*1
0.5
*1
0.004 msec
0.0 Hz
400%
40.00
0.500 sec.
5.00
1
0
4
0.00 Hz
0.00 Hz
0.00 Hz
0.00 Hz
0.00 Hz
0.00 Hz
0.00 Hz
0.00 Hz
50.00 Hz
0.00 Hz
Setting
No.
Name
E2-07 Motor iron saturation coefficient 1
E2-08 Motor iron saturation coefficient 2
E2-09 Monitor mechanical losses
E2-10 Motor iron loss for torque compensation
E2-11 Motor rated output power
E2-12 Motor iron saturation coefficient 3
E3-01 Motor 2 control mode selection
E3-02 Motor 2 Max. output frequency (FMAX)
E3-03 Motor 2 Max. output voltage (VMAX)
E3-04 Motor 2 Base frequency (FA)
E3-05 Motor 2 Mid. output frequency (FB)
E3-06 Motor 2 Mid. output frequency voltage (VB)
E3-07 Motor 2 Min. output frequency (FMIN)
E3-08 Min. output frequency voltage (VMIN)
E4-01 Motor 2 rated current
E4-02 Motor 2 rated slip
E4-03 Motor 2 no-load current
E2-04 Motor 2 number of motor poles
E4-05 Motor 2 line-to-line resistance
E4-06 Motor 2 leak inductance
E4-07 Motor 2 iron saturation coefficient 1
E5-02 PM motor rated power
E5-03 PM motor rated current
E5-04 PM motor number of poles
E5-06 PM motor d-axis inductance
E5-07 PM motor q-axis inductance
E5-09 PM Motor voltage constant
F1-01 PG constant
F1-02 Operation selection at PG open circuit (PGO)
F1-03 Operation selection at overspeed (OS)
F1-04 Operation selection at deviation
F1-05 PG rotation
F1-06 PG division rate (PG pulse monitor)
F1-08 Overspeed detection level
F1-09 Overspeed detection delay time
F1-10 Excessive speed deviation detection level
F1-11 Excessive speed deviation detection delay time
F1-12 Number of PG teeth 1
F1-13 Number of PG teeth 2
F1-14 PG open-circuit detection delay time
F1-18 DV3 fault detection selection
F1-19 DV4 fault detection selection
F1-21 Absolute encoder resolution
F1-22 Magnet position offset
F1-24 PGO Detection level at stop
F1-25 Encoder copy function selection
*1
*1
*1
*1
*1
4
*1
4 poles
*1
*1
*1
10%
0.5 sec.
0
0
1.0 sec.
1
1024
2
1024
1
1
3
0
1
115%
0.0 sec.
60 deg
20%
0
*1
*1
*1
*1
*1
Factory
Setting
0.50
0.75
0.0%
*1
*1
1.30
0
50.00 Hz
400.0 V
50.00 Hz
*1
Setting
10
10-
7
10
No.
Name
F1-26 Encoder copy write permission
F4-01 Channel 1 monitor selection
F4-02 Channel 1 gain
F4-03 Channel 2 monitor selection
F4-04 Channel 2 gain
F4-05 Channel 1 output monitor bias
F4-06 Channel 2 output monitor bias
F4-07 Analog output signal level for channel 1
F4-08 Analog output signal level for channel 2
F5-01 Channel 1 output selection
F5-02 Channel 2 output selection
F5-03 Channel 3 output selection
F5-04 Channel 4 output selection
F5-05 Channel 5 output selection
F5-06 Channel 6 output selection
F5-07 Channel 7 output selection
F5-08 Channel 8 output selection
F5-09 DO-08 output mode selection
F6-01 Operation selection after communications error
F6-02 Input level of external error from Communications Option Card
F6-03 Stopping method for external error from Communications Option Card
F6-04 Trace sampling from Communications Option Card
F6-05 Current monitor unit selection
F6-06 Torque reference/torque limit selection from communications option card
H1-01 Terminal S3 function selection
H1-02 Terminal S4 function selection
H1-03 Terminal S5 function selection
H1-04 Terminal S6 function selection
H1-05 Terminal S7 function selection
H2-01 Terminal M1-M2 function selection
H2-02 Terminal M3-M4 function selection
H2-03 Terminal M5-M6 function selection
H3-01 Frequency reference AI-14B CH1signal level selection
H3-02 Frequency reference AI-14B CH1 input gain
H3-03 Frequency referenceAI-14B CH1 input bias
H3-04 AI-14B CH3 signal level selection
H3-05 AI-14B CH3 function selection
H3-06 AI-14B CH3 input gain
H3-07 AI-14B CH3 input bias
H3-08 AI-14B CH2 signal level selection
H3-09 AI-14B CH2 function selection
H3-10 AI-14B CH2 input gain
H3-11 AI-14B CH2 input bias
H3-12 Analog input filter time constant for the AI-14B
H3-15 Terminal A1 function selection
H3-16 Terminal A1 input gain
H3-17 Terminal A1 input bias
L1-01 Motor protection selection
10-
8
Factory
Setting
0
6
0
40
41
84
81
83
F
0
80
0
0
0
1
0
1
6
37
0F
0F
2
4
0
1
2
100.0%
3
50.0%
0.0%
0.0%
0
0
100.0%
0.0%
0.03 sec.
0
100.0%
0.0%
1
100.0%
0.0%
0
2
100.0%
0.0%
0
3
Setting
No.
Name
L1-02 Motor protection time constant
L2-05 Undervoltage detection level
L2-11 Battery Voltage
L3-01 Stall prevention selection during accel
L3-02 Stall prevention level during accel
L3-05 Stall prevention selection during running
L3-06 Stall prevention level during running
L4-01 Speed agreement detection level
L4-02 Speed agreement detection width
L4-03 Speed agreement detection level (+/-)
L4-04 Speed agreement detection width (+/-)
L5-01 Number of auto restart attempts
L5-02 Auto restart operation selection
L5-05 Under voltage fault (UV1) restart selection
L6-01 Torque detection selection 1
L6-02 Torque detection level 1
L6-03 Torque detection time 1
L6-04 Torque detection selection 2
L6-05 Torque detection level 2
L6-06 Torque detection time 2
L7-01 Forward drive torque limit
L7-02 Reverse drive torque limit
L7-03 Forward regenerative torque limit
L7-04 Reverse regenerative torque limit
L7-06 Torque limit time constant
L7-07 Torque Limit Operation during accel/decel
L8-02 Overheat pre-alarm level n2-01 n2-02 n5-01 n5-02 n5-03 n5-05 n8-29 n8-30 n8-32 n8-33 n8-35 n8-46 n9-60
L8-03 Operation selection after overheat pre-alarm
L8-07 Output open-phase protection selection
L8-09 Ground protection selection
L8-10 Cooling fan control selection
L8-11 Cooling fan control delay time
L8-12 Ambient temperature
L8-18 Soft CLA selection
L8-20 LF detection time
Speed feedback detection control (AFR) gain
Speed feedback detection control (AFR) time constant
Feed forward control selection
Motor Accel Time
Feed forward proportional gain
Motor acceleration time tuning
Current regulator q-axis P gain
Current regulator q-axis I time
Current regulator d-axis P gain
Current regulator d-axis I gain
Magnet position detection method
Inductance measurement current level
A/D converter start delay time
Factory
Setting
1.0 min
60 sec.
45 °C
1
0.2 sec.
1
0
3
2
0
150%
0.1 sec.
300%
300%
300%
300%
200 ms
0
75 °C
*1
0.0 Hz
2.0 Hz
2
0
1
0
150%
0.1 sec.
190 V
0V
1
150%
1
150%
0.0 Hz
2.0 Hz
1.00
50 msec
1
0.178 sec.
1.00
0
1000 rad/sec.
10.0 ms
1000 rad/sec.
10.0 ms
5
10.0%
0.0 µsec.
Setting
10
10-
9
10
No.
Name o2-04 o2-05 o2-06 o2-07 o2-08 o2-09 o2-10 o2-12 o1-01 o1-02 o1-03 o1-04 o1-05 o2-01 o2-02 o2-03
Monitor selection
Monitor selection after power up
Frequency units of reference setting and monitor
Setting unit for frequency parameters related to V/f characteristics
LCD Display contrast adjustment
LOCAL / REMOTE key enable/disable
STOP key during control circuit terminal operation
User parameter initial value kVA selection
Frequency reference setting method selection
Operation selection when digital operator / LED monitor is disconnected
Cumulative operation time setting
Cumulative operation time selection
Initialize Mode
Fan operation time setting
Fault trace initialize o2-15 o3-01
“No of Travels” monitor initialize
Copy function selection o3-02 Read permission selection
S1-01 Zero speed level at stop
S1-02 DC injection braking current at start
S1-03 DC injection braking current at stop
S1-04 DC injection braking time at start
S1-05 DC injection braking time at stop
S1-06 Brake release delay time
S1-07 Brake close delay time
S1-14 SE2 detection delay time
S1-15 SE3 detection delay time
S1-16 Run delay time
S1-17 DC injection current gain at regenerative operation
S1-18 DC injection current gain at motoring operation
S1-19 Output contactor open delay time
S1-20 Zero servo gain
S1-21 Zero servo completion width
S1-22 Starting torque compensation increase time
S1-23 Torque compensation gain during lowering
S1-24 Torque compensation bias during raising
S1-25 Torque compensation bias during lowering
S1-26 Dwell speed at start reference
S1-27 Door zone speed level
S1-28 SE1 detection selection
S1-29 Torque compensation fade out level
S1-30 Torque compensation fade out time
S1-31 Torque limit time at stop
S2-01 Motor rated speed
S2-02 Slip compensation gain in motoring mode
S2-03 Slip compensation gain in regenerative mode
S2-05 Slip compensation torque detection delay time
10-
10
Factory
Setting
6
0.10
200 msec
200 msec
0.10 sec.
100%
20%
0.10 sec.
5
0
0
0.5 Hz
50%
50%
0.40 sec
0.60
0.20
2
0 hr.
0
0
0
0
0 hr.
0
0
0
0
0
0
3
1
0
10
500 msec
1.000
0.0%
0.0%
0.0 Hz
0.0 Hz
0
0.0 Hz
1000 msec
0 msec
1380 rpm
0.7
1.0
1.0 sec.
Setting
No.
Name
S2-06 Slip compensation torque detection time
S2-07 Slip compensation delay time
S3-01 Short floor operation selection
S3-03 Inspection deceleration ramp time
S3-04 Nominal/Leveling speed detection level
S3-05 Nominal speed for short floor calculation
S3-06 Light load direction search for rescue operation
S3-07 Light load search time
S3-08 Output phase order
S3-09 Frequency reference missing (FRL) fault detection
S3-10 Light load search frequency
S3-11 Rescue operation torque limit
S3-12 Base block restart selection
S3-13 Traction sheave diameter
S3-14 Roping
S3-15 Gear Ratio
S3-16 Over acceleration detection level
S3-17 Over acceleration deceleration time constant
S3-18 Over acceleration detection method selection
S3-19 Inspection speed upper limit
S3-20 Short floor minimum constant speed time
S3-21 Distance calculation acceleration time gain
S3-22 Distance calculation deceleration time gain
S3-24 Light load direction search method
T1-01 Autotuning mode selection
T1-02 Motor output power
T1-03 Motor rated voltage
T1-04 Motor rated current
T1-05 Motor base frequency
T1-06 Number of motor poles
T1-07 Motor base speed
T1-08 Number of PG pulses
T1-09 Motor no-load current
T2-01 Motor output power
T2-02 Motor base frequency
T2-03 Motor rated voltage
T2-04 Motor rated current
T2-05 Motor pole number
T2-08 Motor voltage constant
T2-09 Number of PG pulses
T2-10 Motor voltage constant calculation selection
*1. The factory setting depends on the inverter model and the control method.
Factory
Setting
0.5 sec.
1
3.00 Hz
100%
0
400 mm
2
1.000
1.5 m/s²
200 msec
0
0.0 sec.
0.0 Hz
0.0 Hz
0
1.0 sec.
0
0.05 sec.
0
25.0 Hz
0.0 sec.
150.0%
150.0%
0
0
*1
*1
*1
60.0 Hz
4 poles
1450 r/min
1024
E2-03 value
*1
1750 rpm
*1
*1
4
*1
2048
1
Setting
10
10-
11
10
10-
12
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