AuCom EMX User Manual

APPLICATION DATA SHEET
This EMX Series starter and its accompanying CT's have been selected according to the Application Data detailed below. The starter
must be operated with the CTs supplied. If applying the starter in an alternate application, or outside the maximum starter ratings listed,
consult your local representative.
EMX STARTER APPLICATION RATINGS
Model :
________________
Serial Number :
________________
CT Ratio :
_____________ / 5
Connection Format
3 Wire 6 Wire
Bypassed
Maximum Starter FLC : __________ Amps
Maximum Start Current : __________ X FLC
Maximum Start Duration : ____________Secs
Maximum Starts/Hr :
_____________ No
Maximum Amb Temp :
_____________ oC
APPLICATION DATA
Application Ref :
___________________
___________________
Motor Data :
Full Load Current ______________ Amps
kW
________________ kW
Driven Load Data :
Machine Type
___________________
This starter has been factory set as detailed below. Settings should be verified/modified at commissioning by following the Initial Set Up
section of the Users manual. Commissioning settings and sunsequent ammendmends should also be recorded in the spaces provided.
FUNCTION
DATE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
UNITS
FACTORY
SET
COMMISSIONED
/ / CHKD
/ /
PRIMARY MOTOR SETTINGS

Motor Full Load Current
Amps

Current Limit
% FLC

Initial Start Current
% FLC

Start Ramp Time
Secs

Soft Stop Ramp Time
Secs

Motor Start Time Constant
Secs

Phase Imbalance Protection

Undercurrent Protection
% FLC

Electronic Shearpin Protection
% FLC

COMMON PARAMETER SETTINGS

Phase Sequence Protection

LCD Display Mode

CT Primary Ratio ------/5
Amps
Software Version
SECONDARY MOTOR SETTINGS

Motor Full Load Current
Amps

Current Limit
% FLC

Initial Start Current
% FLC

Start Ramp Time
Secs

Soft Stop Ramp Time
Secs

Motor Start Time Constant
Secs

Phase imbalance Sensitivity

Undercurrent Protection
% FLC

Electronic Shearpin Protection
% FLC
AMMENDED
/
/
AMMENDED
/
/
AMMENDED
/
/
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-- i -AMA00002 Rev A.3
EMX SERIES
APPLICATION DATA SHEET
30. Restart Delay
COMMON PARAMETER SETTINGS

Secs
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-- ii -AMA00002 Rev A.3
EMX SERIES
SECTIONAL INDEX
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_
GETTING STARTED
The chart below shows the major activities necessary to install and commission the EMX Series starter. It is
recommended that all users refer to at least the sections listed, before commencing work. First time users of
soft start technology, or the EMX are strongly encouraged to read this Users Manual completely prior to
installation or commissioning.
PHYSICALLY INSTALL THE STARTER
refer sections :
Physical Specification
Ø
CONNECT DESIRED POWER CIRCUIT
refer sections :
Electrical Connection (Power Circuits)
Ø
CONNECT DESIRED CONTROL CIRCUIT
refer sections :
Electrical Connection (Control Circuits)
Ø
COMMISSION STARTER
refer sections :
Commissioning Procedure
EMX Programming Procedure
Trouble Shooting
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-- iii -AMA00002 Rev A.3
EMX SERIES
SECTIONAL INDEX
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_
SECTION 1
CAUTION STATEMENTS
Details possible causes of equipment damage
SECTION 2
GENERAL DESCRIPTION
Overview of EMX Series
SECTION 3
EMX FEATURE DESCRIPTIONS
- Start Modes
Uni-Start Constant Current
Uni-Start Current Ramp
- Uni-Stop Soft Stop
- Prestart Protection
- Run-Time Protection
Programmable Motor Thermal Model
Phase Imbalance Protection
Undercurrent Protection
Phase Sequence Protection
Thermistor Protection
Electronic Shearpin Protection
Restart Delay
Starter Overtemperature
- Run-Time Trip Warnings
- Digital Display
- Auto-configuration
SECTION 4
ELECTRICAL SPECIFICATION
- EMX Connection Detail
- General Specification
- Current Ratings
SECTION 5
PHYSICAL SPECIFICATION
- Dimensions
- Weights
- Bus Bar Configurations
- Mounting Precautions
- Ventilation
- Typical Layout Drawings
- Component Identification
SECTION 6
ELECTRICAL CONNECTION (POWER CIRCUIT)
- EMX Current Transformer Installation & Connection
- 3 Wire Motor Connection
- 6 Wire Motor Connection
- Line Contactors
- Bridging Contactors
- Power Factor Correction
- Dual Speed Motors
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-- iv -AMA00002 Rev A.3
EMX SERIES
SECTIONAL INDEX
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_
SECTION 7
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
- EMX Electronics & Fan Control Supply
- Control Inputs
- Control Outputs
- Analogue Outputs
- Typical Installation Formats
SECTION 8
COMMISSIONING PROCEDURE
- Pre-commisssioning Checks
- Commissioning Procedure
- Post-commissioning Procedure
SECTION 9
EMX PROGRAMMING PROCEDURE
- Overview Of EMX Function Set
- Programming Procedure
- Function Adjustment Chart
SECTION 10
TROUBLE SHOOTING GUIDE
Step by Step guide
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-- v -AMA00002 Rev A.3
EMX SERIES
CAUTION STATEMENTS
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SECTION 1
CAUTION STATMENTS
Overview : This section highlights potential causes of equipment
damage
Content : Caution List ....................................................... 1-2
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1-1
USERS MANUAL
_EMX SERIES
CAUTION STATEMENTS
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_
This caution symbol is used throughout the EMX Manual to draw special attention
to activities which may result in equipment damage. A summary of these cautions
is listed below.
CAUTION
Such Caution Statements cannot cover every potential cause of equipment
damage but can highlight common causes of damage. It is therefore the installers
responsibility to adhere to all instructions in this manual, to follow good electrical
practice and to seek advice before operating this equipment in a manner other
than as detailed in this manual.

Ensure that the EMX is completely isolated from the power supply before
attempting any work on the unit.

Entry of metal swarf into the cabinet can cause equipment failure.

Do not apply voltage to the EMX control input terminals. These are active
12/24VDC inputs and must be controlled with potential free circuits.

Do not connect Power Factor Correction capacitors to the output of the EMX. If
static power factor correction is employed, it must be connected to the supply
side of the EMX.

Before installing the EMX without a line contactor ensure such connection
meets local regulations and by-laws.

If installing the EMX within a non-ventilated enclosure a by-pass contactor
must be utilised to prevent excessive heat build-up.

If installing a by-pass contactor ensure phase connections are correctly made
ie L1-L4, L2-L5,L3-L6.

EMX protection features will be invalidated if :
- the EMX CTs are installed inside by-pass and/or 6 wire circuits.
- the EMX is programmed with an incorrect CT Primary Current (Function 13)
- the EMX CTs do not have 5A secondaries
- the CTs do not measure separate phases

Removing control voltage from the EMX resets the thermal model.
The examples and diagrams in this manual are included solely for illustrative purposes. Users are cautioned that the information
contained in this manual is subject to change at any time and without prior notice.
In no event will responsibility or liability be accepted for direct or indirect or consequential damages resulting from the use or application
of this equipment.
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USERS MANUAL
_EMX SERIES
GENERAL DESCRIPTION
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SECTION 2
GENERAL DESCRIPTION
Overview : This section provides overview of EMX Seies
Content : General Description .......................................... 2-2
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2-1
USERS MANUAL
EMX SERIES
GENERAL DESCRIPTION
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_
General Description The EMX Series is a microcontroller based soft starter incorporating the latest
technologies and has been designed to provide a complete range of the most
advanced soft start and motor protection features.
This Users Manual covers EMX models EMX-0218 thru EMX-1393.
In operation the EMX provides :

improved soft start of motor and load
reduced starting current
improved soft stop of motor and load
programmable motor thermal modelling
phase sequence protection
phase loss protection
undercurrent protection
electronic shear pin protection
motor thermistor protection
performance feedback
In addition, installation, commissioning and maintenance is made easy by the
EMX's many other sophisticated functions which enhance performance and
reliability and make the equipment suitable for optimising practically all motor
starting applications.

automatic motor connection analysis and configuration
automatic phase sequence analysis and configuration
automatic supply voltage analysis and configuration
automatic frequency analysis and configuration
Uni-Start soft start
current limiting
full voltage starting
run output
trip output (Changeover)
line contactor control
by-pass contactor control
motor run current display
motor temperature display
three wire or six wire operation
Uni-Stop soft stop
simple, accurate and repeatable programming procedures.
diagnostic fault display
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USERS MANUAL
EMX SERIES
GENERAL DESCRIPTION
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2-3
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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SECTION 3
EMX FEATURE DESCRIPTIONS
Overview : This section describes the purpose and operation of
each feature of the EMX Series Starters.
[For Commissioning & Programming procedures refer sections 8 & 9]
Content : Start Modes
Uni-Start Constant Current .............................. 3-2
Uni-Start Current Ramp ................................. 3-3
Uni-Stop Soft Stop ............................................ 3-4
Prestart Protection ............................................ 3-5
Run-Time Protection ......................................... 3-6
Programmable Motor Thermal Model ............ 3-8
Phase Imbalance Protection ........................ 3-10
Undercurrent Protection ............................... 3-11
Phase Sequence Protection ........................ 3-11
Thermistor Protection ................................... 3-12
Electronic Shearpin Protection ..................... 3-12
Starter Overtemperature .............................. 3-12
Run-Time Trip Warnings ................................. 3-13
Digital Display ................................................. 3-14
Auto-configuration ........................................... 3-15
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USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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Uni-Start Constant
Current Soft Start
Uni-Start Constant Current soft start quickly ramps motor starting current to the
user programmed Current Limit (Function 2). Voltage is then dynamically controlled
to accurately maintain the programmed start current. Motor starting current
remains at the programmed set point until full speed is approached and the current
falls to run current levels.
A key feature of the EMX is the inclusion of Uni-Start technology. Uni-Start is an
advanced method of control which dynamically adjusts starter output to match the
motor characteristics as they change during starting and stopping. Uni-Start
Control is operative in all EMX start and stop modes.
This feature eliminates the motor instability sometimes experienced with ordinary
soft start systems. Uni-Start Constant Current provides particular advantage in
pumping applications where both starting and stopping times can be adjust to
minimise fluid hammer without the need for dedicated 'pump start' units.
Current Limit
(Function 2)
MOTOR
FLC (A)
100%
100% SPEED
BAA10260
The required setting for the Current Limit function is installation dependant and
should be programmed such that
a.
b.
c.
at a minimum the motor is supplied start current sufficient to enable it to
produce adequate torque to easily start the connected load.
desired starting performance is obtained.
EMX ratings are not exceeded, refer to the Application Data Sheet on the
first page of this Users Manual.
FUNCTION 2
Description
Display Units
Limits/Range
Factory Setting
CURRENT LIMIT
Sets the start current as a percentage of motor nameplate
FLC, as set in Function 1 (Motor FLC).
Start Current = Motor FLC X Current Limit
(Function 1)
(Function 2)
% FLC (eg. 350%)
Minimum : 100%
Maximum : 550 %
Refer Application Data sheet on page 1 of this manual
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3-2
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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Uni-Start Current
Ramp Soft Start
Uni-Start Current Ramp start mode modifies the Constant Current start mode by
allowing the user to program both an Initial Start Current (Function 3) and a Start
Ramp Time (Function 4), as well as the Current Limit (Function 2).
Current Limit
(Function 2)
MOTOR
FLC (A)
Initial Start Current
(Function 3)
100%
Start Ramp Time
(Function 4)
BAA10261
CURRENT RAMP should be considered in preference to CONSTANT CURRENT
start mode in applications where :
a.
b.
c.
required start torque can vary from start to start. ie conveyors : loaded,
unloaded.
starting time of easily broken away loads needs to be lengthened. ie pumps
supply capacity is limited. ie generator sets.
The Current Limit (Function 2) should be set so that the motor can accelerate easily
to full speed.
The Initial Start Current (Function 3) should be set such that the motor begins to
rotate as soon as a start is called for. Setting the Initial Start Current equal to the
Current Limit (Function 2) defeats the Current Ramp Mode.
The Start Ramp Time (Function 4) should be set to optimise overall starting
characteristics for the connected load. Setting the Start Ramp Time to 0 seconds
defeats the Current Ramp Mode.
FUNCTION 3
Description
Display Units
Limits/Range
Factory Setting
FUNCTION 4
Description
Display Units
Limits/Range
Factory Setting
INITIAL START CURRENT
Sets the initial start current as a percentage of motor
nameplate FLC, as set in Function 1 (Motor FLC).
% FLC (eg 230%)
Minimum : 100%
Maximum : 550 %
Refer Application Data sheet on page 1 of this manual
START RAMP TIME
Sets the rate at which current rises from the Initial Start
Current (Function 3) to the Current Limit (Function 2).
Seconds
Minimum : 0 sec
Maximum : 30 sec
Refer Application Data sheet on page 1 of this manual
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3-3
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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Uni-Stop Soft Stop
The EMX is equipped with a user selectable and adjustable Uni-Stop soft stop
function (0s - 100s).
Uni-Stop Soft Stop, when enabled, reduces the voltage applied to the motor,
causing the motor to stall and decelerate to zero speed. The effect of this is to add
inertia to the load and thereby reduce the rate of deceleration.
Uni-Stop technology dynamically adjusts starter output to match the motor
characteristics as they change during stopping.
Uni-Stop Soft Stop eliminates the motor instability sometimes experienced with
ordinary soft stop systems. Uni-Stop provides particular advantage in pumping
applications where both starting and stopping times can be adjusted to minimise
fluid hammer without the need for dedicated 'pump soft start' units.
100
80
60
% VOLTAGE
40
20
0
0
STOP RAMP TIME
5 10 15 20 25 30 35 40
TIME (sec)
BBA10105
If utilising the Uni-Stop Soft Stop function and a line contactor, the contactor must
not be opened until the end of the stop ramp time. The EMX's Main Contactor
Control relay can be used to provide appropriate contactor control.
The Soft Stop Ramp Time (Function 5) should be adjusted such that it provides
optimum stopping performance for the application. Setting the Soft Stop Ramp
Time to 0 seconds defeats the soft stop function.
FUNCTION 5
Description
Display Units
Limits/Range
Factory Setting
SOFT STOP RAMP TIME
Sets the soft stop ramp time for soft stopping of the motor.
Set the ramp time for 0 (zero) seconds for no soft stop.
Seconds
Minimum : 0 sec
Maximum : 100 seconds
Refer Application Data sheet on page 1 of this manual
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3-4
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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Protection
The EMX provides an integrated protection package which operates on three
levels to prevent damage and also to allow management of motor operation so as
to avoid trip conditions.

Prestart Circuit
Analysis &
Configuration
Prestart Circuit Analysis/Configuration
Run-time Protection Systems
Run-time Trip Warnings
To prevent damage from incorrect installation or supply problems the EMX Series
starters perform an automatic system analysis at the first start after each power up
of the control voltage to the EMX. Tests performed include :

Motor circuit
Motor connection configuration
Frequency range
Voltage range
Supply circuit
Upon successful completion of the tests voltage is applied to the motor.
Failure of any of these pre-start checks causes the EMX to :

trip and illuminate the appropriate indication. (Refer to Trouble Shooting
Section later in this manual)
change the state of the trip relay contacts.
Relay Operation
START
SIGNAL
CLOSED
OPEN
- 100%
OUTPUT
VOLTAGE
- 0%
MAIN
CONTACTOR
START/
RUN
RUN
(BRIDGING
CONTACTOR)
CLOSED
OPEN
CLOSED
OPEN
CLOSED
OPEN
CLOSED
TRIP
OPEN
BAA10258
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3-5
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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Run-time
Protection
The EMX starters provide the following run-time protection systems.

Programmable Motor Thermal Modelling
Phase Imbalance Protection
Thermistor Protection
Undercurrent Protection
Shearpin Protection
Starter Overtemperature Protection
Phase Sequence Protection
Operation of any of these protection features causes the EMX to :

trip and illuminate the appropriate indication. (Refer to Trouble Shooting
Section later in this manual)
change the state of the trip relay contacts.
Relay Operation : Run-Time Trips
CLOSED
START
SIGNAL
OUTPUT
VOLTAGE
OPEN
P
R
E
S
T
A
R
T
C
H
E
C
K
S
- 100%
RAMP PROFILE DYNAMICALLY
ADJUSTED TO MAINTAIN USER
PROGRAMMED START CURRENT
RUN TIME
TRIP
- 0%
CLOSED
MAIN
CONTACTOR
OPEN
CLOSED
START/
RUN
OPEN
CLOSED
RUN
(BRIDGING
CONTACTOR)
OPEN
CLOSED
TRIP
OPEN
BAA10259
Run-Time Protection in By-passed Starters
EMX run-time protection features remain operative even when the starter is bypassed with a bridging contactor provided the EMX CT's are not also by-passed.
Refer to the Electrical Installation section later in this manual.
Resetting Run-Time Trips
Run time trips may be reset by operation of the EMX's reset contact.
CAUTION
REMOVAL OF CONTROL VOLTAGE TO RESET TRIP
CONDITIONS RESETS MOTOR THERMAL MODEL
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3-6
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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Operational Overview (Protection Features)
1) OFF mode.
In the OFF mode, the starter microcomputer monitors the thermistor inputs and models motor temperature.
a) If the thermistor input is connected to a circuit of resistance greater than 2kohm, the starter will enter the
TRIP mode.
b) If the thermal model exceeds 1.05, the starter will enter the TRIP mode.
2) PRESTART mode.
In the PRESTART mode, the main contactor relay output is closed, the starter microcomputer measures the
supply frequency, motor connection ,phase sequence and the presence of all phases. Depending on the
results of these measurements, either auto configures itself and enters the START mode, or trips on an
installation or phase sequence fault.
3) START mode
In the START mode, the starter microcomputer monitors the thermistor inputs, the phase imbalance and
models motor temperature.
a) If the thermistor input is connected to a circuit of resistance greater than 2kohm, the starter will enter the
TRIP mode.
b) If the thermal model exceeds 1.05, the starter will enter the TRIP mode.
c) If the Phase Imbalance protection operates, the starter will enter the TRIP mode.
d) If the output voltage from the starter reaches full voltage, the starter will enter the RUN mode.
4) RUN mode
In the RUN mode, the starter microcomputer monitors the thermistor inputs, the phase imbalance,.motor run
current and models motor temperture.
a) If the thermistor input is connected to a circuit of resistance greater than 2kohm, the starter will enter the
TRIP mode.
b) If the thermal model exceeds 1.05, the starter will enter the TRIP mode.
c) If the Phase Imbalance protection operates, the starter will enter the TRIP mode.
c) If the undercurrent protection operates, the starter will enter the TRIP mode.
d) If the shear pin protection operates, the starter will enter the TRIP mode.
5) SOFT STOP mode
a) If the stop time is zero, the starter immediately enters the OFF mode.
b) If the thermistor input is connected to a circuit of resistance greater than 2kohm, the starter will enter the
TRIP mode.
c) If the thermal model exceeds 1.05, the starter will enter the TRIP mode.
d) If the Phase Imbalance protection operates, the starter will enter the TRIP mode.
e) As the output voltage approaches zero, the starter enters OFF mode.
6) TRIP mode
In TRIP mode, the main contactor, run and start/run contacts are open and the TRIP relay changes mode.
SCR conduction is inhibited.
a) If the RESET is closed, the starter enters the OFF mode.
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EMX SERIES
EMX FEATURE DESCRIPTIONS
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Programmable
Thermal Motor
Modelling
Optimum motor overload protection is provided by the EMX through a user
programmable thermal motor model.
Programmed with actual motor thermal characteristics from the motor's data sheet,
the EMX is able to thermally model motor temperature. This ensures accurate
protection while still enabling the motor to work to its maximum capability during
both start and overload conditions.
Determining The Maximum Motor Start Time Constant (MSTC)
The EMX thermal protection is adjusted by setting the Motor Start Time Constant
(MSTC) (Function 6) according to the motor's thermal capacity.
A motor's thermal capacity can be expressed as the maximum time (seconds) a
motor can maintain locked rotor current conditions, and is often referred to as :
or
Maximum Locked Rotor Time
Maximum DOL Start Time
The motor's thermal capacity can also be expressed as the maximum load inertia
at the motor shaft.
This information is available from motor data sheets, or direct from the motor
supplier. From this information the maximum Motor Start Time Constant (MSTC)
figure may be determined as follows :
1.
MSTC = Motor Locked Rotor Time
The motors Maximum Locked Rotor Time, or Maximum DOL Start Time,
expressed in seconds may be used directly as the maximum Motor Start
Time Constant (MSTC) for programming into the EMX.
Motor Start Time Constant = Maximum Locked Rotor Time
2.
MSTC = Normalised Motor Locked Rotor Time
For greater accuracy, the motor's Maximum Locked Rotor Time and Locked
Rotor Current figure can be used together to calculate a normalised
maximum MSTC figure as shown below :
MSTC =
example :
MSTC =
⎧ %LRC
⎩ 600
⎫2 x Motor Locked Rotor Time
⎭
Motor Maximum Locked Rotor Time = 14 seconds
Motor Locked Rotor Current (%) = 650%
⎧
⎩
650
600
⎫2 x 14 = 16 seconds
⎭
Determining The Appropriate Motor Start Time Constant (MSTC) Setting
The MSTC figure, as calculated above, represents the motor's maximum thermal
capacity, and when used to program the EMX will provide accurate motor
protection while also allowing the motor to be operated to its maximum overload
capability.
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USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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MSTC figures less than the maximum, as calculated above, may also be used
when programming the EMX Thermal Model. Using conservative MSTC settings
should be considered where maximum motor overload capacity is not necessary
for normal motor/load operation. Such settings will trip the motor earlier, thereby
avoiding any unnecessary motor heating.
If maximum motor thermal capacity is not required, a reduced setting may be
established by observing the modelled motor temperature, as shown on the EMX
LCD Display, and adjusting the MSTC parameter such that after a normal start
which has been preceded by a period of running at maximum load, the calculated
motor temperature is approaching 100%.
Operation
Motor temperature is continuously modelled by the EMX, even when the motor is
not running. Control voltage to the EMX must be maintained at all times to ensure
the accuracy of thermal calculations. Removing control voltage from the EMX
resets the thermal model to zero.
When commissioning, or re-comissioning after removal of control voltage from the
EMX, verify that the motor is cold before starting the motor to ensure accurate
thermal modelling.
Accuracy of the thermal model is compromised if the motor is operated outside its
specification. ie ambient temperature is in excess of rated ambient, motor cooling
fan is blocked or inoperative etc. Motor Thermistor protection should be used to
detect such abnormal conditions.
FUNCTION 6
Description
Display Units
Discrimination
Limits/Range
Factory Setting
MOTOR START TIME CONSTANT (MSTC)
Sets the motor thermal capacity used by the EMX
thermal model.
Seconds
1 second
Minimum : 5 sec
Maximum : 60 seconds
Refer Application Data sheet on page 1 of this manual
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USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
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Phase Imbalance
Protection
Phase Imbalance Protection protects the motor against phase imbalance
situations, either before or after the starter.
The EMX monitors the three phase currents and bases its calculations on the
difference between the highest phase current and the lowest phase current.
The readings are averaged before the calculation requiring that there is an
imbalance in the average currents drawn.
The allowable phase imbalance is user adjustable. The parameter sets the trip
level in approximately* ten percent increments, ie a setting of '2' will cause a trip if
the high phase has an average current of 120% of the lowest phase. This is an
imbalance of about 10% from the average current.
(* accuracy subject to tolerance in current monitoring circuit.)
The phase imbalance protection sensitivity is reduced during starting and stopping
to accommodate the discontinuous waveform.
To ensure maximum motor protection, the Phase Imbalance Protection (Function 7)
should be set to as high a sensitivity as possible without causing nuisance tripping.
FUNCTION 7
Description
Display Units
PHASE IMBALANCE PROTECTION
Sets the percentage imbalance allowed between phases
while the motor is operating.
Sensitivity level ( 1,2,3 ,4,5,6,7,8,9,10)
Settings
.
1
minimum imbalance (highest sensitivity)
:
:
10 maximum imbalance (lowest sensitivity)
Factory Setting
Refer Application Data sheet on page 1 of this manual
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EMX SERIES
EMX FEATURE DESCRIPTIONS
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Undercurrent
Protection
The EMX provides an undercurrent trip which may be adjusted to trip the starter if
the motor current falls below a pre-programmed minimum current level.
Undercurrent protection can be used to detect changes in motor loading which
may indicate system malfunction. For instance in pumping applications a low motor
current may indicate a pump is running 'dry' and thus in danager of suffering
damage This feature will also detect an open circuit on the output of the starter.
If required, Undercurrent Protection (Function 8) should be set below the minimum
running current of the machine but above the magnetising current of the motor.
Settings lower than the motor's magnetising current (typically 25% to 35%) limit the
protection to detection of open circuit protection only. The practical lower limit is
5%.
The Undercurrent Protection is enabled once the motor has reached full speed.
FUNCTION 8
Description
Display Units
Limits/Range
Factory Setting
Phase Sequence
Protection
UNDERCURRENT PROTECTION
Sets the lower limit (trip point) for motor load as a
percentage of motor nameplate FLC as programmed in
Function 1 (Motor Full Load Current)
% (percentage)
Minimum : 0 %
Maximum : 100 %
Refer Application Data sheet on page 1 of this manual
The EMX provides a user programmable phase sequence protection which, if
enabled, inhibits motor operation if a prohibited phase sequence is detected.
The Phase Sequence Protection (Function 11) must be disabled (Set to zero) if the
EMX is used with reversing contactors on the input.
FUNCTION 11
Description
Display Units
PHASE SEQUENCE PROTECTION
Sets valid phase sequences for phase sequence
protection. Invalid phase sequences prevent operation.
Valid Phase Sequences
Valid Phase Sequences
.
0 forward and reverse (no protection)
1 forward (positive) only (EMX trips on reverse phase sequence)
2 reverse (negative) only(EMX trips on forward phase sequence)
Factory Setting
Refer Application Data sheet on page 1 of this manual
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EMX SERIES
EMX FEATURE DESCRIPTIONS
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Thermistor
Protection
PTC Motor thermistors, if fitted in the motor, may be directly connected to EMX.
If motor thermistors are not connected, the thermistor inputs terminals (28 & 29)
must be linked.
The thermistor circuit should be run in screened cable and must be electrically
isolated from earth and all other power and control circuits.
Threshold resistance - 1800 ohms
Thermistor Current - less than 1.5mA
Electronic
Shearpin
The EMX provides an Electronic Shearpin protection function which can be
adjusted to trip the starter if motor current exceeds a pre-programmed maximum
current.
Electronic Shearpin protection can be used to detect changes in motor loading
which may indicate the motor is about to jam, thereby allowing the starter to trip
and prevent mechanical damage to the motor, drive chain and/or machine.
The Electronic Shearpin Protection (Function 9 ) should generally be set equal to
Current Limit (Function 2), but may be altered to a lower setting if required.
The Electronic Shearpin Protection is enabled once the motor has reached full
speed.
FUNCTION 9
Description
Display Units
Limits/Range
Factory Setting
Restart Delay
ELECTRONIC SHEARPIN PROTECTION
Sets the upper limit (trip point) for motor current as a
percentage of motor nameplate FLC as programmed in
Function 1 (Motor Full Load Current)
% FLC
Minimum : 1%
Maximum : 900%
Refer Application Data sheet on page 1 of this manual
The Restart Delay allows the user to program a delay period between the end of a
stop and the beginning of the next start. This feature can be used to prevent
inadvertent abuse of the starter and motor caused by high frequency cyclic
start/stop commands.
FUNCTION 30
Description
Display Units
Limits/Range
Factory Setting
RESTART DELAY
Sets the minimum time between the end of a stop and the
beginning of the next start.
Seconds (approximate)
Minimum : 1 second
Maximum : 255 seconds
Refer Application Data sheet on page 1 of this manual
_____________________________________________________________
3-12
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
______________________________________________________________________________________
_
Starter
Overtemperature
The EMX is protected from overtemperature operation by sensors on each of the
three power modules.
Overtemperature situations cause the EMX to trip, and it may not be re-started until
the temperature of the power module heatsink assemblies has dropped.
Run-time
Trip Warnings
The EMX units provides indication and interface of the following three functions
which can provide feedback on approaching trip conditions.

Overload Operation
Motor Current (% FLC)
Thermally Modelled Motor Temperature (%)
FUNCTION
Overload Operation
Motor Current
Motor Temperature (Thermal Model)
LED
YES
NO
NO
DISPLAY TYPE
LCD
NO
YES
YES
4-20mA
NO
YES
YES
Overload Operation
The Overload LED on the Front Panel Display illuminates when motor current
exceeds the motor Full Load Current (FLC) as set in Function 1.
Extended illumination of the Overload LED indicates that an overload trip is
approaching should motor current remain high.
Pulsing of the Overload LED indicates transient overloads are being experienced.
Such momentary overloads may be part of normal operation for the connected
load. Extended, severe and/or too frequent transient overloads may cause motor
thermal trips.
Motor Current
Provided as both an LCD readout and 4-20mA signal
LCD : Refer to Digital Display description later in this section.
4-20mA : Refer to Analogue Outputs description in the Electrical
Connection (Control Circuit) section of this manual.
Motor Temperature (Thermal Model)
Provided as both an LCD readout and 4-20mA signal
LCD : Refer to Digital Display description later in this section.
4-20mA : Refer to Analogue Outputs description in the Electrical
Connection (Control Circuit) section of this manual.
_____________________________________________________________
3-13
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
______________________________________________________________________________________
_
Digital Display
The Digital Display, located on the front face of the EMX, is used for both starter
programming and displaying run-time parameters.
STORE
FUNCTION
POWER
Program Mode
Refer EMX Programming Procedure section later in this manual.
Display Mode
During run, the LCD display may be programmed to display motor current, motor
temperature or alternate between the two.
Motor Current :
Display Units
Limits/Range
Amps
Minimum : 0 A
Maximum : Dependant on CT's
Note that the integrity of the current display is subject to the EMX being
correctly programmed with Primary Rating of the connected CTs. During
commissioning of the EMX the LCD current display should not be relied upon
until its operation has been verified by measuring motor current by an
independent means.
Thermally Modelled Motor Temperature:
Display Units
Limits/Range
% percentage
Minimum: 0%
Maximum : 105%
The motor temperature is displayed as a percentage of the maximum motor
temperature as calculated by the Thermal Model. The motor temperature
display is indicated by a leading decimal point. ie 90% reads as .90 and 100%
as 1.00. The EMX will trip when the motor temperature reaches 1.05.
FUNCTION 12
Description
Display Units
LCD RUN TIME DISPLAY MODE
Sets the parameter shown on LCD display during run
Parameter Options (0,1,2)
Parameter Options
.
0
Motor Current (Amps)
1
Motor Temperature (Thermal Model)(%)
2
Current / Motor Temperature
Factory Setting
Refer Application Data Sheet On Page 1 Of This Manual
_____________________________________________________________
3-14
USERS MANUAL
EMX SERIES
EMX FEATURE DESCRIPTIONS
______________________________________________________________________________________
_
Auto-configuration
The EMX automatically determines the motor connection, supply frequency, supply
voltage & phase sequence and configures the internal parameters for correct
operation, or inhibits operation if a problem is detected.
At start, the EMX is able to determine and configure for 3 Wire or 6 Wire operation.
The EMX will auto-select for 50Hz or 60Hz operation.
The EMX will operate for line input voltages as follows
3 wire connection : 220 VAC to 600 VAC
6 wire connection : 220 VAC to 440 VAC
_____________________________________________________________
3-15
USERS MANUAL
EMX SERIES
ELECTRICAL SPECIFICATION
______________________________________________________________________________________
_
SECTION 4
ELECTRICAL SPECIFICATION
Overview : This section details the general electrical specification of
the EMX Series Starters.
Content : EMX Connection Detail ..................................... 4-2
Specifications .................................................... 4-3
Ratings .............................................................. 4-4
_____________________________________________________________
4-1
USERS MANUAL
EMX SERIES
ELECTRICAL SPECIFICATION
______________________________________________________________________________________
_
EMX CONNECTION DETAIL
A1
L1
L4
L2
L5
L3
L6
1
30
3 PHASE SUPPLY
TO MOTOR
380/415V
31
2
PT
OR
220/240V
3
32
4
33
380/415V
5
380/415V
6
380/415V
OR
220/240V
FANS
7
8
9
FLC SELECT
10
22
11 START
23
12
24
TRIP
13 STOP
25
-
14
26
GND
15 RESET
RS485 SERIAL INTERFACE
(EMXi MODELS ONLY)
27
+
16
RUN
17
28
THERMISTOR
29
18
34
+
MAIN CONTACTOR
19
35
4-20mA OUTPUT A
20
36
+
START/RUN
21
37
4-20mA OUTPUT B
-
_____________________________________________________________
4-2
USERS MANUAL
EMX SERIES
ELECTRICAL SPECIFICATION
______________________________________________________________________________________
_
SPECIFICATIONS
The following specifications are common to all models:-
Power Circuit:
Reverse parallel connected thyristors (full wave control)
Supply Voltage:
220 VAC to 600 VAC (3 Wire)
220 VAC to 440 VAC (6 Wire)
Consult local representative for other voltages
Supply Frequency:
48Hz to 52Hz, 58Hz to 62Hz
Control Voltage:
Refer Marking On Equipment
Fan Voltage:
Refer Marking On Equipment
Current Rating:
Refer to Table Of Ratings overleaf
Motor Connection:
3 Wire or 6 Wire
Control Inputs:
Active 24 VDC, 8mA approx
(8,9)
FLC Select
(10,11) Start
(12,13) Stop
(14,15) Reset
Relay Outputs:
5A @ 250VAC/360VA, 5A @ 30VDC Resistive
(16,17) Run (Bridging Contactor Control) (N.O.)
(18,19) Main Contactor Control (N.O.)
(20,21) Start/Run (N.O.)
(22,23,24) Trip (C/O)
Indicators:
Power On
Start/Run
Run
Overload
Phase Sequence
Overcurrent
Undercurrent
Phase Loss
Thermistor
Shearpin
Installation Fault
Overtemperature Fault
Degree Of
Protection:
IP00
Ambient
Temperature:
0oC to 45oC (Operating)
-5oC to 65oC (Storage)
Relative Humidity:
5-95% (max non condensing)
_____________________________________________________________
4-3
USERS MANUAL
EMX SERIES
ELECTRICAL SPECIFICATION
______________________________________________________________________________________
_
Standard
Parameters
Starts Per Hour : 10
Maximum Ambient Temperature : 45 oC
Light Duty : 3 X FLC, 10 Seconds
Medium Duty : 3.5 X FLC, 15 Seconds
Heavy Duty : 4.5 x FLC, 30 seconds
MODEL
EMX-0218
EMX-0266
EMX-0351
EMX-0390
EMX-0438
EMX-0538
EMX-0611
EMX-0746
EMX-0791
EMX-0925
EMX-1192
EMX-1393
MAXIMUM MOTOR FULL LOAD CURRENT
LIGHT DUTY
MEDIUM DUTY
HEAVY DUTY
3 WIRE
6 WIRE
3 WIRE
6 WIRE
3 WIRE
6 WIRE
218A
266A
351A
390A
438A
538A
611A
746A
791A
925A
1192A
1393A
328A
401A
526A
585A
657A
806A
917A
1120A
1186A
1388A
1788A
2089A
188A
230A
300A
333A
377A
462A
525A
640A
677A
792A
1020A
1295A
281A
344A
450A
500A
566A
693A
787A
960A
1016A
1188A
1530A
1942A
142A
173A
223A
248A
286A
347A
389A
475A
500A
581A
745A
929A
214A
260A
335A
373A
429A
520A
583A
712A
749A
871A
1117A
1393A
_____________________________________________________________
4-4
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
SECTION 5
PHYSICAL SPECIFICATION
Overview : This section details the mounting detail, bus bar
configuration and ventilation options for the EMX Series
Starters.
Content : Dimensions ....................................................... 5-2
Bus Bar Configurations ..................................... 5-3
Bus Bar Dimensions .......................................... 5-4
Mounting Precautions ....................................... 5-5
Ventilation .......................................................... 5-5
Typical Layout Drawings ................................... 5-9
Component Identification ................................ 5-10
_____________________________________________________________
5-1
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Physical Installation The EMX may be mounted and ventilated in several wayS depending upon site
requirements.
Dimensions
CABINET WIDTH = B.
HOLE FIXING CENTRES = F.
FAN HOUSING = G.
CABINET DEPTH = C.
FAN HOUSING = J.
POWER
START/RUN
RUN
OVERLOAD
HOLE FIXING CENTRES = E.
OVERCURRENT
UNDERCURRENT
PHASE LOSS
THERMISTOR
SHEARPIN
INSTALLATION
FAN HOUSING = H.
OVERTEMPERATURE
O/ALL FIXING LUGS = D.
CABINET HEIGHT = A.
EMX SERIES
MODEL NUMBER
A
B
C
D
E
F
G
H
J
EMX-0218 : EMX-0266 : EMX-0351 : EMX-0390
606
420
263
645
625
335
22
520
295
EMX-0438 : EMX-0538 : EMX-0611 : EMX-0746 : EMX-0791 : EMX-0925
606
520
275
645
625
435
22
520
420
EMX-1192 : EMX-1393
646
560
295
685
665
475
34
560
460
Weights
MODEL
EMX-0218
EMX-0266
EMX-0351
EMX-0390
EMX-0438
EMX-0538
EMX-0611
EMX-0746
EMX-0791
EMX-0925
EMX-1192
EMX-1393
KG
35
35
35
35
55
55
55
55
55
72
140
140
_____________________________________________________________
5-2
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Input/Output
Terminal
Configuration
The EMX units offer four different input/output power terminal configurations.
Check with supplier if EMX not supplied in required configuration.
INPUT
L3
L2
L1
L1
L4
L5
L6
OUTPUT
INPUT
L3
L2
L2
L3
INPUT
L6
L5
L5
L6
OUTPUT
OUTPUT
OUTPUT
L1
L4
L6
L5
L4
L4
L1
L2
L3
INPUT
_____________________________________________________________
5-3
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Bus Bar
Dimensions
EMX-0218 THRU EMX-0390
172
127
44.5
183
32
82
13
BUSBAR SIZE : 13 X 25.
HOLE SIZE: 10.5 DIAMETER.
101
32
13
146
44.5
183
191
EMX-0438 THRU EMX-0925
212
147
195
44.5
82
25
32
BUSBAR SIZE : 25 X 25.
HOLE SIZE : 10.5 DIAMETER.
112
32
177
44.5
25
195
242
_____________________________________________________________
5-4
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Mounting
Precautions
Do not mount in direct sunlight
Do not locate near heat radiating elements
Mount the EMX vertically
Allow clearance for ventilation
Do Not Obstruct air intakes / exhaust
Mounting In
Ventilated
Enclosures
The EMX Series starters may be installed into ventilated enclosures in either of two
ways.
Option 1. - Starter Assisted Ventilation
This unique feature allows EMX starters to be mounted directly onto the back of an
enclosure into which a suitable ventilation slot has been cut.
This mounting method allows the starter to draw its own cooling air directly from
outside the enclosure thereby pressurising the cabinet and ensuring heated air is
expelled from the enclosure.
Option 2. - Standard Enclosure Ventilation
EMX starters may be installed in ventilated enclosures which have been designed
to ensure internal temperature does not exceed 45oC
40 MM RECOMMENDED SIDE CLEARANCE ALL TYPES.
125mm
MIN
125mm
MIN
STARTER ASSISTED VENTILATION.
STANDARD ENCLOSURE VENTILATION.
125mm
MIN
NON VENTILATED ENCLOSURE.
(BYPASS CONTACTOR)
_____________________________________________________________
5-5
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Starter Assisted Ventilation
A
B
INTAKE
APERTURE
EXHAUST
VENTS
MODEL
EMX-0218
EMX-0266
EMX-0351
EMX-0390
EMX-0438
EMX-0538
EMX-0611
EMX-0746
EMX-0791
EMX-0925
EMX-1192
EMX-1393
Notes :
AIR
FLOW
m3/min
11.7
11.7
11.7
11.7
17.6
17.6
17.6
17.6
17.6
17.6
21.2
21.2
REAR PANEL
INTAKE APERTURE
(A)
(B)
300mm
525mm
300mm
525mm
300mm
525mm
300mm
525mm
425mm
525mm
425mm
525mm
425mm
525mm
425mm
525mm
425mm
525mm
425mm
525mm
465mm
565mm
465mm
565mm
Ensure 200mm clearance between the back of the enclosure and any walls or similar.
Avoid placing exhaust vents on same plane as intake fans to prevent recirculation of heated
exhaust air.
_____________________________________________________________
5-6
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Standard Enclosure
Ventilation
VENT.
VENT.
MODEL
EMX-0218
EMX-0266
EMX-0351
EMX-0390
EMX-0438
EMX-0538
EMX-0611
EMX-0746
EMX-0791
EMX-0925
EMX-1192
EMX-1393
Notes
AIR
FLOW
m3/min
11.7
11.7
11.7
11.7
17.6
17.6
17.6
17.6
17.6
17.6
21.2
21.2
TOTAL HEAT
DISSIPATION
watts/amp
< 4.5W
< 4.5W
< 4.5W
< 4.5W
< 4.5W
< 4.5W
< 4.5W
< 4.5W
< 4.5W
< 4.5W
< 4.5W
< 4.5W
Ventilation must be sufficient to ensure that the air temperature within the enclosure remains below
45oC.
_____________________________________________________________
5-7
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Mounting In
Non-ventilated
Enclosures
If the EMX is to be mounted in a non-ventilated enclosure a bridging contactor
should be employed to eliminate heat build up in the enclosure.
The Bridging contactor can be AC1 rated as it only carries the running current of
the motor.
The bridging contactor should be controlled by the EMX Run output (16,17) and
used to bridge out the SCRs once the motor has started by bridging between L1 L4, L2 - L5, L3 - L6.
Bridging contactor operation should be controlled by the EMX Run output.
K1M
L1
L4
L2
L5
L3
L6
CT
CT
M
3~
SUPPLY
CT
30
31
32
16
BRIDGING CONTACTOR
CONTROL SUPPLY
17
RUN
33
K1M
BAA10262
_____________________________________________________________
5-8
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Typical Mechanical
Layout
POWER
START/RUN
RUN
FRONT PANEL
DISPLAY
OVERLOAD
OVERCURRENT
UNDERCURRENT
PHASE LOSS
THERMISTOR
SHEARPIN
INSTALLATION
OVERTEMPERATURE
EMX SERIES
CONTROL
TERMINATIONS
CONTROL
TERMINATIONS
INPUTS
LEFT SIDE VIEW
OUTPUTS
FRONT VIEW
BAA10247
_____________________________________________________________
5-9
USERS MANUAL
EMX SERIES
PHYSICAL SPECIFICATION
______________________________________________________________________________________
_
Front Panel Display
LCD DISPLAY
KEY PAD
STORE
FUNCTION
POWER
START/RUN
RUN
OVERLOAD
PHASE SEQUENCE
INDICATOR
LEDs
OVERCURRENT
UNDERCURRENT
PHASE LOSS
THERMISTOR
SHEARPIN
INSTALLATION
OVERTEMPERATURE
EMX SERIES
BAA10238
Control Terminations
F
F
F
4
5
6
FLC
SELECT
EMX
1
2
3
FIELD
380/415 or 220/240
7
8
9
START
STOP
RESET
10 11 12 13 14 15
RS485
16 17 18 19 20 21 22 23 24
RUN
220/240
MAIN
START/RUN
CONTACTOR
TRIP
THERMISTOR
25 26 27
-
GND
+
CT's
4-20mA
4-20mA
28 29 30 31 32 33 34 35 36 37
+
+
OUTPUT A OUTPUT B
EMX
FIELD
380/415 380/415
380/415
BAA10249
CONTROL AND
FAN SUPPLY
REMOVABLE
CONNECTOR
CONTROL
INPUTS
CONTROL (RELAY)
OUTPUTS
SERIAL
AUXILIARY AUXILIARY
LINK
INPUTS OUTPUTS
(EMXi ONLY)
_____________________________________________________________
5-10
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (POWER CIRCUIT)
______________________________________________________________________________________
_
SECTION 6
ELECTRICAL CONNECTION
(POWER CIRCUIT)
Overview : This section details the installation of the EMX Current
Transformers, as well as the various power circuit
configurations possible with the EMX Series Starters.
Content : EMX Current Transformer Installation ................
3 Wire Motor Connection ..................................
6 Wire Motor Connection ..................................
Line Contactors .................................................
Bridging Contactors ...........................................
Power Factor Correction ...................................
Dual Speed Motors .............................................
6-2
6-4
6-4
6-5
6-6
6-6
6-7
_____________________________________________________________
6-1
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (POWER CIRCUIT)
______________________________________________________________________________________
_
Current
Transformer
Installation &
Connection
The EMX comes complete with three Current Transformers (supplied loose) details
of which are shown on the Application Data Sheet on page 1 of this Users Manual.
These CTs must be installed to measure motor (line) current, and the CTs
secondaries wired back to the EMX unit.
The CTs form part of the feedback loop used by the EMX to control and protect the
motor, and have been selected specifically for the application for which the starter
is supplied. No alternate CTs should be used without reference to the local supplier
and appropriate alteration of the EMX CT Primary Current Rating parameter
(Function 13).
The CT's are supplied separate from the main unit so that the EMX can continue to
provide protection even when by-passed. This eliminates the need for separate
overload protection when a by-pass system is used.
The CTs must be used in a manner that they monitor line current to the motor.
They must not be bridged out by a bridging contactor, if used, and they must not be
installed inside the delta loop if using six wire connection.
The CTs must be wired back to the EMX CT input terminals (30,31,32,33),
ensuring that the common connection is made to terminal No 33. Do not connect
any other circuits to the EMX CTs. Do not earth the CTs.
FUNCTION 13
Description
Display Units
Factory Setting
CT PRIMARY CURRENT RATING
Sets the value of the primary current of the EMX current
transformers. Note : the CTs must have 5Amp secondary
Amps
Appropriate for the CTs supplied with the EMX, and
detailed on the Application Data Sheet On Page 1 of this
Manual.
ACCEPTABLE CT POSITIONS (3 Wire - Non By-Passed)
CT
CT
CT
L1
L4
L2
L5
L3
L6
M
3~
L1
L4
L2
L5
L3
L6
30
30
31
31
32
32
33
33
BAA10263
CT
CT
CT
M
3~
BAA10263
_____________________________________________________________
6-2
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (POWER CIRCUIT)
______________________________________________________________________________________
_
ACCEPTABLE CT POSITIONS (3 Wire -By-Passed)
K1M
K1M
CT
CT
CT
L1
L4
L2
L5
L3
L6
M
3~
L1
L4
L2
L5
L3
L6
30
30
31
31
32
32
33
33
CT
CT
CT
M
3~
BAA10263
BAA10263
ACCEPTABLE CT POSITIONS (6 Wire - Non By-Passed & By-passed)
K1M
CT
CT
CT
L1
L4
L2
L5
L3
L6
CT
M
3~
CT
CT
L1
L4
L2
L5
L3
L6
30
30
31
31
32
32
33
33
BAA10263
M
3~
BAA10263
THE EMX START PERFORMANCE, DISPLAYED CURRENT READINGS,
OVERCURRENT, UNDERCURRENT AND SHEARPIN PROTECTION
FUNCTIONS WILL BE INACCURATE UNLESS :
CAUTION
1. EACH OF THE 3 CTS MONITORS A SEPARATE PHASE
2. THE CTS ARE MONITORING LINE CURRENT TO THE MOTOR
3. THE EMX CT PRIMARY CURRENT RATING PARAMETER (FUNCTION 13)
IS SET CORRECTLY FOR THE INSTALLED CTS
4. THE CONNECTED CTS HAVE 5 A SECONDARIES
_____________________________________________________________
6-3
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (POWER CIRCUIT)
______________________________________________________________________________________
_
Motor Connection
The EMX can be connected to control a variety of different motors in a number of
different circuit configurations.
3 Wire Motor Connection
K1M
CT
L1
L4
L2
L5
L3
L6
CT
SUPPLY
M
3~
CT
30
31
32
33
BBA10107
The EMX may be connected to motors designed star operation or for motor
designed for delta operation, so long as the motor is appropriate for the supply
voltage.
L1
L4
L1
L4
L2
L5
L2
L5
L3
L6
L3
L6
MOTOR TERMINALS
STAR CONNECTION
MOTOR TERMINALS
DELTA CONNECTION
BBA10115.DWG
6 Wire Motor Connection
K1M
CT
L1
L4
CT
SUPPLY
L2
L5
L3
L6
U1
V1
W1
CT
U2
M
3~
V2
W2
30
31
32
33
BBA10107
_____________________________________________________________
6-4
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (POWER CIRCUIT)
______________________________________________________________________________________
_
Connect the three OUTPUT terminals (L4,L5,L6) of the EMX to the motor windings
ensuring that the connections are made to one end of each winding only. It is
imperative to connect the output of the EMX to the same end of each winding and
this is usually marked on the motor terminations.
L1
L4
L2
L5
L3
L6
MOTOR TERMINALS
6 WIRE CONNECTION
BBA10116.DWG
The six terminations to the motor windings are usually arranged in two rows of
three so that the links can be fitted across from the top three terminations to the
lower terminations. In this case connect the EMX to the top terminations only.
Connect the other three motor terminals to the input of the EMX in a manner that
connects the end of each winding to a different phase from the input.
This is easiest achieved by replacing each delta link in the motor terminal box by
one phase of the controller.
For example if the delta links are fitted U1-V2,V1-W2,W1-U2
- Connect the incoming phases to L1,L2,L3 on the EMX.
- Connect the EMX to the motor. L4-U1, L5-V1, L6-W1
- Connect the other motor terminals to the EMX input. V2-L1, W2-L2, U2-L3
CAUTION
Line Contactors
SIX WIRE CONNECTION SHOULD NOT BE MADE
WITHOUT USE OF A LINE CONTACTOR AS THE MOTOR
REMAINS CONNECTED TO THE SUPPLY EVEN
WHEN THE STARTER IS SWITCHED OFF
The EMX is designed to operate with or without a line contactor. In many regions
there is a statutory requirement that a line contactor be employed with electronic
motor control equipment. From a safety point of view, this is the preferable option,
however is not necessary for starter operation.
The EMX can directly control a line contactor via the Main Contactor Control output
(18,19).
As an alternative to a line contactor, either a circuit breaker with a no volt release
coil operated by the EMX trip output (22,23,24), or a motor operated circuit breaker
can be considered.
If a motor operated circuit breaker is used as a line contactor, the potential delay
between the breaker being told to close and phase power being applied to the
EMX could cause the EMX to trip on installation faults. This can be avoided by
closing the motorised breaker directly and using the breakers auxiliary contacts to
control the EMX.
_____________________________________________________________
6-5
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (POWER CIRCUIT)
______________________________________________________________________________________
_
Bridging Contactors
If the EMX is to be mounted in a non-ventilated enclosure a bridging contactor
should be employed to eliminate heat build up in the enclosure.
Bridging contactor can be AC1 rated as it only carries the running current of the
motor.
The bridging contactor should be controlled by the EMX Run output (16,17) and
used to bridge out the SCRs once the motor has started by bridging between L1 L4, L2 - L5, L3 - L6.
IT IS IMPERATIVE THAT THE BRIDGING CONTACTOR CONNECTS L1 TO
L4, L2 TO L5 AND L3 TO L6. ANY OTHER COMBINATION WILL CAUSE
FUSE FAILURE, CIRCUIT BREAKER TRIP AND POSSIBLE SCR FAILURE.
CAUTION
K1M
L1
L4
L2
L5
L3
L6
CT
CT
M
3~
SUPPLY
CT
30
31
32
16
BRIDGING CONTACTOR
CONTROL SUPPLY
17
RUN
33
K1M
BAA10262
Bridging contactors should be controlled to bridge out the EMX during run. The
EMX's bridging contactor control output should be used to control the bridging
contactor.
If using a bridging contactor
Connect between the inputs and outputs of the EMX ensuring that with the
contactor closed, L1 connects to L4, L2 connects to L5 and L3 connects to L6.

Power Factor
Correction
CAUTION

Connect the coil of the bridging contactor through the EMX Run relay outputs
to the control voltage.

To maintain EMX motor protection features ensure CT's are installed outside
the by-pass circuit.
If static power factor correction is employed, it must be connected to the supply
side of the soft starter.
UNDER NO CIRCUMSTANCE SHOULD POWER FACTOR
CORRECTION CAPACITORS BE CONNECTED BETWEEN
THE SOFT STARTER AND THE MOTOR.
_____________________________________________________________
6-6
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (POWER CIRCUIT)
______________________________________________________________________________________
_
Dual Speed Motors
Dahlander Two Speed motor applications are specifically catered for by the EMX
starters, which includes dual parameter settings to allow individual start and
protection parameters to be programmed for each motor speed. The Dahlander
speed changeover contactors should be connected to the output of the EMX. Refer
Application Schematic below.
The secondary start and protection parameters (Functions 21 > 29) are operational
when the FLC Select terminals (8,9) are linked. To switch between primary and
secondary parameter settings the EMX must be stopped, the FLC Select contact
operated, and the EMX restarted. (Refer Typical Application 4).
Secondary settings are programmed and operate in an identical manner to the
primary setting.
K3M
K2M
T4
T5
T6
A1
L1
K1M
L4
T1
L2
L5
T2
L3
L6
T3
TO DUAL
SPEED MOTOR
DAHLANDER TYPE
3 SUPPLY
32/2A
30
31
32
33
1
2
PT
3
4
5
6 FANS
K2A
7
K1A
REMOTE LOW SPEED
START INPUT
8
K1A
9 FLC SELECT
K1A
10
REMOTE HIGH SPEED
START INPUT
11 START
K2A
K1M
12
K2M
13 STOP
S1
14
15 RESET
25
RS485 SERIAL
26
INTERFACE
GND
(EMXi MODELS
27
ONLY)
+
16
17
28
RUN
THERMISTOR 29
18
19
4-20mA
MAIN
CONTACTOROUTPUT A
20
21
4-20mA
OUTPUT B
START/
RUN
22
34
+
28
OR
29
(MOTOR
THERMISTOR)
K3M
35
K1M
36
+
37
K2A
K2M
K1A
K3M
K3M
23
TRIP
24
K1M
K2M
BAB10255
LEGEND
A1
EMX
K1A
REMOTE START RELAY (LOW SPEED)
K2A
REMOTE START RELAY (HIGH SPEED)
K1M
LINE CONTACTOR (HIGH SPEED)
K2M
LINE CONTACTOR (LOW SPEED)
K3M
STAR CONTACTOR (HIGH SPEED)
S1
RESET PUSHBUTTON
_____________________________________________________________
6-7
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (POWER CIRCUIT)
______________________________________________________________________________________
_
_____________________________________________________________
6-8
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
SECTION 7
ELECTRICAL CONNECTION
(CONTROL CIRCUIT)
Overview : This section details the connection of control voltage to
the EMX Starters as well as describing the EMX's
various control inputs and outputs. Additionally, typical
connection schematics are provided.
Content : EMX Electronics & Fan Supply .........................
Control Inputs
Start ..............................................................
Stop ..............................................................
Reset ............................................................
FLC Select ....................................................
Control Outputs
Main Contactor .............................................
Start/Run ......................................................
Run ...............................................................
Trip ...............................................................
Analogue Outputs
Motor Current .................................................
Motor Temperature (Thermal Model).............
Typical Installation Formats ..............................
7-2
7-3
7-3
7-3
7-3
7-5
7-5
7-5
7-5
7-8
7-8
7-9
_____________________________________________________________
7-1
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
EMX ELECTRONICS
& FAN SUPPLY
The EMX must be supplied with control voltage for both the electronics and cooling
fans.
The EMX is designed to operate with the electronics permanently supplied. The
electronics must be powered up for the thermal model to function in the OFF state
(motor not running) while the motor is cooling. The electronics must also be
powered up so that the EMX can control any line contactor connected.
The Fans on the EMX can be kept running all the time, or can be operated in
conjunction with the starter operation. If the fans are controlled, it is preferable that
they run for a cool down period after the motor is stopped. A ten minute delay off
timer driven from the Start/Run output (20,21) would be satisfactory for this.
ELECTRONICS
1
2
COOLING FANS
3
F
F
F
4
5
6
380/415 or 220/240
7
220/240
380/415 380/415
380/415
F
F
F
4
5
6
FLC
SELECT
EMX
1
2
3
FIELD
7
8
9
START
10
11
STOP
12
13
RESET
14
15
RS485
16
17
RUN
220/240
380/415 or 220/240
18
19
20
21
MAIN
START/RUN
CONTACTOR
22
23
TRIP
24
THERMISTOR
25
26
27
-
GND
+
28
29
CT's
30
31
32
4-20mA
33
34
+
35
-
OUTPUT A
4-20mA
36
+
37
-
OUTPUT B
EMX
FIELD
380/415 380/415
380/415
BAA10249
CONTROL AND FAN
SUPPLY
REMOVABLE
CONNECTOR
_____________________________________________________________
7-2
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Control Inputs
The EMX incorporates the following control inputs.
F
F
F
4
5
6
FLC
SELECT
EMX
1
2
3
FIELD
380/415 or 220/240
7
8
9
START
STOP
RESET
10 11 12 13 14 15
RS485
16 17 18 19 20 21 22 23 24
RUN
220/240
MAIN
START/RUN
CONTACTOR
TRIP
THERMISTOR
25 26 27
-
GND
+
CT's
4-20mA
4-20mA
28 29 30 31 32 33 34 35 36 37
+
+
OUTPUT A OUTPUT B
EMX
FIELD
380/415 380/415
380/415
BAA10249
REMOVABLE
CONNECTOR
Start (10,11)

CONTROL
INPUTS
active 24 VDC
operate with potential free circuit
Four Wire Control : The start circuit must be closed fleetingly to start the
motor. The start signal is latched internally by the EMX until either the starter
trips or the stop circuit is opened.
Two Wire Control : In a two wire non latching circuit the start input is linked
and the EMX is controlled by closing and opening the stop input.
contacts used for controlling this input should be low voltage, low current
rated. (Gold flash or similar)
Stop (12,13)

active 24 VDC
operate with potential free circuit. (Must be closed for the EMX to operate)
contacts used for controlling this input should be low voltage, low current
rated. (Gold flash or similar)
Reset (14,15)

active 24 VDC
operate with potential free circuit. (Must be closed for the EMX to operate).
Open circuit to closed circuit transition resets the EMX
contacts used for controlling this input should be low voltage, low current
rated. (Gold flash or similar)

FLC
Select (8,9)

EMERGENCY STOP
active 24 VDC
operate with potential free circuit . An open circuit selects the primary motor
parameters and a closed contact selects the secondary parameters. The
FLC Select Input is used primarily to select a secondary set of parameters in
dual speed motor applications. (Refer Dual Speed Motor section of this
manual for further description of FLC Select use).
contacts used for controlling this input should be low voltage, low current
rated. (Gold flash or similar)
Simultaneously opening the STOP & RESET circuits will effect an immediate stop,
and cause the trip relay to operate, and then reset after approximately 8 seconds.
Control Input wiring should be run separately from power wiring to prevent noise
and possible induced voltage.
CAUTION
VOLTAGE MUST NOT BE APPLIED TO THE CONTROL
INPUT TERMINALS. APPLICATION OF VOLTAGE
IS LIKELY TO CAUSE EQUIPMENT DAMAGE.
_____________________________________________________________
7-3
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Operational Overview (Control inputs.)
1) OFF mode.
In the OFF mode, the starter microcomputer monitors the START, STOP, RESET and keypad inputs.
a) If the RESET input is open circuit, the EMX will ignore all other inputs.
b) If the keypad function key is pressed, the starter will enter the programming mode.
c) If the STOP, START and RESET are closed, the starter will enter the PRESTART mode. NB. The
START input is only monitored in the OFF mode and SOFT STOP mode.
2) PRESTART mode.
In the PRESTART mode, the main contactor is closed, the starter microcomputer executes a number of
measurements, and depending on the results of these, either auto configures itself and enters the START
mode, or trips on an installation or phase sequence fault.
3) START mode
In the START mode, the starter microcomputer monitors the STOP and RESET.
a) If the STOP is open and the RESET is closed, the starter enters the SOFT STOP mode.
b) If both the STOP and the RESET are open, the starter will immediately stop and enter the OFF mode.
c) If the output voltage from the starter reaches full voltage, the starter will enter the RUN mode.
4) RUN mode
In the RUN mode, the starter microcomputer monitors the STOP and RESET.
a) If the STOP is open and the RESET is closed, the starter enters the SOFT STOP mode.
b) If both the STOP and the RESET are open, the starter will immediately stop and enter the OFF mode.
5) SOFT STOP mode
In the SOFT STOP mode, the starter microcomputer monitors the START, STOP and RESET.
In SOFT STOP mode, the output voltage is reduced at the rate determined by the stop time parameter. (soft
stop)
a) If the stop time parameter is zero, the starter immediately enters the OFF mode.
b) If both the STOP and the RESET are open, the starter will immediately stop and enter the OFF mode.
c) If the START and STOP are closed, the starter enters the START mode.
d) As the output voltage approaches zero, the starter enters OFF mode.
6) TRIP mode
In the TRIP mode, the starter microcomputer monitors the RESET input. In TRIP mode, SCR conduction is
inhibited.
a) If the RESET is closed, the starter enters the OFF mode.
_____________________________________________________________
7-4
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Control Outputs
F
F
F
4
5
6
The EMX incorporates the following control outputs
FLC
SELECT
EMX
1
2
3
FIELD
380/415 or 220/240
7
8
9
START
STOP
RESET
10 11 12 13 14 15
RS485
16 17 18 19 20 21 22 23 24
RUN
220/240
MAIN
START/RUN
CONTACTOR
TRIP
THERMISTOR
25 26 27
-
GND
+
CT's
4-20mA
4-20mA
28 29 30 31 32 33 34 35 36 37
+
+
OUTPUT A OUTPUT B
EMX
FIELD
380/415 380/415
380/415
BAA10249
REMOVABLE
CONNECTOR
Main Contactor (18,19)

CONTROL (RELAY)
OUTPUTS
Potential Free, Normally Open Relay Contact
closes when the EMX receives start signal, opens when EMX stops applying
voltage to the motor and when the EMX Trips
designed to control operation of a line contactor if fitted to the input of the
EMX. This function is particularly useful when utilising the Soft Stop function
and a line contactor, as it closes the contactor on start and opens the
contactor at the end of the ramp down period.
Start/Run (20,21)

Potential Free, Normally Open Relay Contact
closes when the EMX is in either the start mode, run mode or soft stop
mode. ie closed when the starter is expected to be applying voltage to the
motor.
Run (16,17)

Potential Free, Normally Open Relay Contact
closes when EMX is applying line voltage to the motor.
designed to control a bridging contactor, if fitted, and/or as an Off-Load
control output for compressors, conveyors, pumps etc.
Trip (22,23,24)

Potential Free, Changeover Relay Contacts
Changes state when the EMX is in the tripped state.
_____________________________________________________________
7-5
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Relay Operation :
Normal Running
CLOSED
START
SIGNAL
OPEN
P
R
E
S
T
A
R
T
OUTPUT
VOLTAGE
C
H
E
C
K
S
- 100%
RAMP PROFILE DYNAMICALLY
ADJUSTED TO MAINTAIN USER
PROGRAMMED START CURRENT
RUN TIME
STOP
RAMP TIME
- 0%
(AS PROGRAMMED)
CLOSED
MAIN
CONTACTOR
OPEN
CLOSED
START/
RUN
OPEN
RUN
(BRIDGING
CONTACTOR)
CLOSED
OPEN
CLOSED
TRIP
OPEN
BAA10258
Relay Operation :
Trip
CLOSED
START
SIGNAL
OUTPUT
VOLTAGE
MAIN
CONTACTOR
START/
RUN
RUN
(BRIDGING
CONTACTOR)
OPEN
P
R
E
S
T
A
R
T
C
H
E
C
K
S
- 100%
RAMP PROFILE DYNAMICALLY
ADJUSTED TO MAINTAIN USER
PROGRAMMED START CURRENT
RUN TIME
TRIP
- 0%
CLOSED
OPEN
CLOSED
OPEN
CLOSED
OPEN
CLOSED
TRIP
OPEN
BAA10259
_____________________________________________________________
7-6
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Starter Operation (Relay outputs.)
1) OFF mode.
In the OFF mode, the Main Contactor, Start/Run and Run relay outputs are in their normally open state and
the trip relay is in the normal state also.
2) PRESTART mode.
In the PRESTART mode, the main contactor is closed, the starter microcomputer executes a number of
measurements, and depending on the results of these, either auto configures itself and enters the START
mode, or trips on an installation or phase sequence fault.
3) START mode
In START mode, the main contactor is closed, and the start/run is closed.
a) If the output voltage from the starter reaches full voltage, the starter will enter the RUN mode.
4) RUN mode
In RUN mode, the main contactor is closed, the start/run is closed and the run is closed.
5) SOFT STOP mode
In SOFT STOP mode, the run contact is open. The start/run and main contactor are closed. The output
voltage is reduced at the rate determined by the stop time parameter. (soft stop)
a) If the stop time is zero, the starter immediately enters the OFF mode.
b) As the output voltage approaches zero, the starter enters OFF mode.
6) TRIP mode
In TRIP mode, the main contactor, run and start/run contacts are open and the trip relay changes state. SCR
conduction is inhibited.
a) If the RESET is closed, the starter enters the OFF mode.
_____________________________________________________________
7-7
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Analogue
Outputs
Two 4 - 20mA analogue outputs are provided by EMX, for interface of :

Motor Current
Motor Temperature
These outputs are useful for load control, remote panel meters etc.
F
F
F
4
5
6
FLC
SELECT
EMX
1
2
3
FIELD
380/415 or 220/240
7
8
9
START
STOP
RESET
10 11 12 13 14 15
RS485
16 17 18 19 20 21 22 23 24
RUN
220/240
MAIN
START/RUN
CONTACTOR
TRIP
THERMISTOR
25 26 27
-
GND
+
CT's
4-20mA
4-20mA
28 29 30 31 32 33 34 35 36 37
+
+
OUTPUT A OUTPUT B
EMX
FIELD
380/415 380/415
380/415
BAA10249
REMOVABLE
CONNECTOR
% Motor Current (34,35)
Motor Temperature
(Thermal Model) (36,37)
ANALOGUE
OUTPUTS

4-20mA Signal, 34(+),35(-) (Output A)
Indicates the average current being drawn by the motor as a percentage of
Full Load Current (4mA = 0% 20mA = 125%)

4-20mA Signal, 36(+),37(-) (Output B)
Indicates the modelled motor temperature as a percentage of the trip
temperature. The thermal model is tailored by the Motor Start Time Constant
(Function 6). (4mA = 0% 20mA = 105%). The EMX trips at 105%.
_____________________________________________________________
7-8
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Typical Installation Formats
______________________________________________________________________________________
_
The EMX Series starters may be connected and controlled in a wide variety of ways. Five common
application formats are detailed in the following application examples.
If none of these options fully meets application requirements further study of this Users Manual should
enable custom design of an appropriate circuit.
______________________________________________________________________________________
_
_____________________________________________________________
7-9
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
APPLICATIONS 1:
A typical application where the EMX is applied without a line contactor, and is
controlled by start/stop push buttons.(Ensure local regulations and by-laws permit
operation of electronic soft starters without a line contactor or similar load break
switch).
A1
L1
L4
L2
L5
L3
L6
1
30
M
3~
3 SUPPLY
32/2A
2
31
PT
3
32
4
33
5
6 FANS
7
8
9 FLC SELECT
S1
10
22
11 START
23
TRIP
S2
24
12
13 STOP
25
-
S3
14
15 RESET
RS485 SERIAL
26
INTERFACE
(EMXi MODELS GND
27
ONLY)
+
16
17
28
RUN
THERMISTOR 29
18
19
4-20mA
MAIN
CONTACTOROUTPUT A
20
21
START/
RUN
4-20mA
OUTPUT B
34
+
28
OR
29
(MOTOR
THERMISTOR)
35
36
+
37
-
BAB10252
LEGEND
A1
S1
S2
S3
EMX
START PUSHBUTTON
STOP PUSHBUTTON
RESET PUSHBUTTON
_____________________________________________________________
7-10
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Installation
Procedure
1.
Connect the EMX (L1, L2, L3) to the supply and EMX Outputs (L4,L5,L6) to
the motor using appropriate fuses and isolator. Ensure the CTs supplied with
the EMX are installed on separate phases and monitor line current.
2.
Connect the EMX CT secondaries to the EMX CT terminals (30,31,32 & 33)
ensuring that the common connection is made to terminal 33.
3.
Connect control voltage (380/415) to the EMX electronic supply. (Terminals 1
& 2).
4.
Connect control voltage (380/415) to the EMX cooling fans (Terminals 4,5 &
6).
5.
Connect motor thermistors to EMX Thermistor input (Terminals 28,29), If
motor thermistors are not connected ensure that the Thermistor Input is
linked.
6.
Connect START, STOP & RESET circuits.
7.
Commission the EMX by following the steps outlined in the Commissioning
Procedure section of this Users Manual.
_____________________________________________________________
7-11
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
APPLICATIONS 2:
A typical application where the EMX, controlled directly via push buttons, is used to
control line contactor (K1M) operation.
K1M
A1
L1
L4
L2
L5
L3
L6
1
30
M
3~
3 SUPPLY
32/2A
31
2
PT
3
32
4
33
5
6
FANS
7
8
9
FLC SELECT
10
S1
11
22
START
23
TRIP
24
12
S2
13
STOP
25
-
14
S3
15
RESET
RS485 SERIAL
INTERFACE
(EMXi MODELS
ONLY)
26
GND
27
+
16
17
28
28
RUN
THERMISTOR
OR
29
18
34
29
(MOTOR
THERMISTOR)
+
19
MAIN
CONTACTOR
4-20mA
OUTPUT A
35
-
K1M
36
20
+
21
START/
RUN
4-20mA
OUTPUT B
37
-
BAB10253
LEGEND
A1
K1M
S1
S2
S3
EMX
LINE CONTACTOR
START PUSHBUTTON
STOP PUSHBUTTON
RESET PUSHBUTTON
_____________________________________________________________
7-12
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Installation
Procedure
1.
Install the EMX between the Line Contactor and the motor, by connecting the
output of the contactor to the EMX input terminals (L1, L2, L3), and
connecting the motor to the EMX output terminals (L4,L5,L6).
2.
Connect the EMX CT secondaries to the EMX CT terminals (30,31,32 & 33)
ensuring that the common connection is made to terminal 33.
3.
Connect control voltage (380/415) to the EMX electronic supply. (Terminals 1
& 2). The control supply must be sourced from the line side of the contactor so
that the EMX is able to control the line contactor and provide continuous
thermal modelling.
4.
Connect control voltage (380/415) to the EMX cooling fans (Terminals 4,5 &
6).
5.
Connect motor thermistors to EMX Thermistor input (Terminals 28,29), If
motor thermistors are not connected ensure that the Thermistor Input is
linked.
6.
Connect START, STOP & RESET circuits.
7.
Wire the coil of the line contactor through the Main Contactor relay output as
shown.
8.
Commission the EMX by following the steps outlined in the Commissioning
Procedure section of this Users Manual.
_____________________________________________________________
7-13
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
APPLICATIONS 3:
A typical application where the EMX, connected in six wire configuration, and
controlled directly via an automatic two wire potential free contact, is used to
control line contactor (K1M) operation.
K1M
A1
L1
L4
U1
L2
L5
L3
L6
3 SUPPLY
V1
W1
U2
M
3~
V2
W2
32/2A
30
31
32
33
1
2
PT
3
4
5
6
FANS
7
8
9 FLC SELECT
10
22
11 START
23
TRIP
12
S1
24
13 STOP
14
S2
15 RESET
25
RS485 SERIAL
26
INTERFACE
GND
(EMXi MODELS
27
ONLY)
+
16
17
28
RUN
THERMISTOR 29
18
19
34
4-20mA
MAIN
CONTACTOR OUTPUT A
28
OR
29
(MOTOR
THERMISTOR)
+
35
-
K1M
20
21
36
START/
RUN
4-20mA
OUTPUT B
+
37
-
BAB10254
LEGEND
A1
K1M
S1
S2
EMX
LINE CONTACTOR
START/STOP POTENTIAL FREE CONTACT
RESET PUSHBUTTON
_____________________________________________________________
7-14
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Installation
Procedure
1.
Connect the motor to the EMX and supply as shown.
- Connect the incoming phases to L1,L2,L3 on the EMX.
- Connect the EMX to the motor. L4-U1, L5-V1, L6-W1
- Connect the other motor terminals to the EMX input. V2-L1, W2-L2, U2-L3
2.
Install the CTs supplied with the EMX ensuring that they are installed on
separate phases and that they monitor line current. (Installing the CTs within
the delta circuit will invalidate EMX starting and protection functions)
3.
Connect the EMX CT secondaries to the EMX CT terminals (30,31,32 & 33)
ensuring that the common connection is made to terminal 33.
4.
Connect control voltage (380/415) to the EMX electronic supply. (Terminals 1
& 2). The control supply must be sourced from the line side of the contactor so
that the EMX is able to control the line contactor and provide continuous
thermal modelling.
5.
Connect control voltage (380/415) to the EMX cooling fans (Terminals 4,5 &
6).
6.
Connect motor thermistors to EMX Thermistor input (Terminals 28,29), If
motor thermistors are not connected ensure that the Thermistor Input is
linked.
7.
Connect START, STOP & RESET circuits.
8.
Wire the coil of the line contactor through the Main Contactor relay output as
shown.
9.
Commission the EMX by following the steps outlined in the Commissioning
Procedure section of this Users Manual.
_____________________________________________________________
7-15
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
APPLICATIONS 4:
A typical application where the EMX, connected controlled directly via an automatic
two wire potential free contact, is used to control a dual speed motor. This circuit is
NOT appropriate for applications requiring Soft Stop.
K3M
K2M
T4
T5
T6
A1
L1
K1M
L4
T1
L2
L5
T2
L3
L6
T3
TO DUAL
SPEED MOTOR
DAHLANDER TYPE
3 SUPPLY
32/2A
30
31
32
33
1
2
PT
3
4
5
6 FANS
K2A
7
K1A
REMOTE LOW SPEED
START INPUT
8
K1A
9 FLC SELECT
K1A
10
REMOTE HIGH SPEED
START INPUT
11 START
K2A
K1M
12
K2M
13 STOP
S1
14
15 RESET
25
RS485 SERIAL
26
INTERFACE
(EMXi MODELS GND
27
ONLY)
+
16
17
28
RUN
THERMISTOR 29
18
19
4-20mA
MAIN
CONTACTOR
OUTPUT A
20
21
4-20mA
OUTPUT B
START/
RUN
22
34
+
28
OR
29
(MOTOR
THERMISTOR)
K3M
35
K1M
36
+
37
K2A
K2M
K1A
K3M
K3M
23
TRIP
24
K1M
K2M
BAB10255
LEGEND
A1
EMX
K1A
REMOTE START RELAY (LOW SPEED)
K2A
REMOTE START RELAY (HIGH SPEED)
K1M
LINE CONTACTOR (HIGH SPEED)
K2M
LINE CONTACTOR (LOW SPEED)
K3M
STAR CONTACTOR (HIGH SPEED)
S1
RESET PUSHBUTTON
_____________________________________________________________
7-16
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
_____________________________________________________________
7-17
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Installation
Procedure
1.
Connect the EMX (L1, L2, L3) to the supply and EMX Outputs (L4,L5,L6) to
the Dahlander speed changeover contactors as shown. Ensure the
mechanical and electrical interloacks, and delay contacts are as shown. Also
ensure the CTs supplied with the EMX are installed on separate phases and
monitor line current.
2.
Connect the EMX CT secondaries to the EMX CT terminals (30,31,32 & 33)
ensuring that the common connection is made to terminal 33.
3.
Connect control voltage (380/415) to the EMX electronic supply. (Terminals 1
& 2).
4.
Connect control voltage (380/415) to the EMX cooling fans (Terminals 4,5 &
6).
5.
Connect motor thermistors to EMX Thermistor input (Terminals 28,29), If
motor thermistors are not connected ensure that the Thermistor Input is
linked.
6.
Connect control circuitry as shown.
7.
Commission the EMX by following the steps outlined in the Commissioning
Procedure section of this Users Manual.
_____________________________________________________________
7-18
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
APPLICATIONS 5:
A typical application where the EMX, connected controlled by start/stop push
buttons, is by-passed during run. (Ensure local regulations and by-laws permit
operation of electronic soft starters without a line contactor or similar load break
switch).
K1M
A1
L1
L4
L2
L5
L3
L6
1
30
M
3~
3 SUPPLY
32/2A
2
31
PT
3
32
4
33
5
6
FANS
7
8
9
FLC SELECT
10
S1
11
22
START
23
TRIP
12
S2
13
24
STOP
25
-
14
S3
15
RESET
RS485 SERIAL
INTERFACE
(EMXi MODELS
ONLY)
26
GND
27
+
16
17
K1M
RUN
THERMISTOR
34
MAIN
CONTACTOR
4-20mA
OUTPUT A
OR
29
18
19
28
28
29
(MOTOR
THERMISTOR)
+
35
36
20
21
START/
RUN
4-20mA
OUTPUT B
+
37
-
BAB10256
LEGEND
A1
K1M
S1
S2
S3
EMX
BYPASS CONTACTOR
START PUSHBUTTON
STOP PUSHBUTTON
RESET PUSHBUTTON
_____________________________________________________________
7-19
USERS MANUAL
EMX SERIES
ELECTRICAL CONNECTION (CONTROL CIRCUIT)
______________________________________________________________________________________
_
Installation
Procedure
1.
Connect the EMX (L1, L2, L3) to the supply and EMX Outputs (L4,L5,L6) to
the motor. Ensure the CTs supplied with the EMX are installed on separate
phases, monitor line current and are not by-passed by the bridging contactor.
2.
Connect the bridging contactor to by-pass the EMX (but not EMX CTs), as
shown.
3.
Connect the EMX CT secondaries to the EMX CT terminals (30,31,32 & 33)
ensuring that the common connection is made to terminal 33.
4.
Connect control voltage (380/415) to the EMX electronic supply. (Terminals 1
& 2).
5.
Connect control voltage (380/415) to the EMX cooling fans (Terminals 4,5 &
6).
6.
Connect motor thermistors to EMX Thermistor input (Terminals 28,29), If
motor thermistors are not connected ensure that the Thermistor Input is
linked.
7.
Connect START, STOP & RESET circuits.
8.
Commission the EMX by following the steps outlined in the Commissioning
Procedure section of this Users Manual.
_____________________________________________________________
7-20
USERS MANUAL
EMX SERIES
COMMISSIONING PROCEDURE
_______________________________________________________________________
SECTION 8
COMMISSIONING PROCEDURE
Overview : This section details commissioning procedures for an
EMX installation.
Content : Pre-commissioning Checks .............................. 8-2
Commissioning Procedure ................................ 8-3
Post-commissioning Recording ........................ 8-3
_____________________________________________________________
8-1
USERS MANUAL
EMX SERIES
COMMISSIONING PROCEDURE
_______________________________________________________________________
Pre-commissioning Checks
STEP
CHECK
1
Ensure that the correct model has been supplied as ordered for the application.
2
Verify that the EMX serial number shown on the Application Data Sheet on page 1 of this
manual sheet matches the serial number on the unit.
3
Verify that the quoted start parameters are suitable for the application.
4
Check the C.T.s supplied and/or fitted and ensure that they are equal to the ratio specified
on the Application Data Sheet on page 1 of this manual.
5
Inspect the starter and report any visible signs of damage to the unit.
6
Verify that the control circuit is
a) suitable for the application
b) compatible with the EMX control philosophy.
7
Cooling of the EMX is important for the long term reliability of the product and for the
elimination of over temperature trips. Ensure that the ventilation is appropriate for the
application and that the EMX cooling fans are not too close to a surface. If the EMX is not
bypassed during run, ensure that there is provision for sufficient passage of air out of the
enclosure to cool the unit. This may require forced ventilation of the enclosure.
8
Check that the fans are connected to either a single phase supply or a three phase
supply.
9
Check that the Electronics PT input is connected to a control supply, using either
terminals 1 and 2, or 2 and 3. NB Only two terminals are to be connected!
10
Apply power to the Electronics PT input, and ensure that the POWER LED on the control
panel illuminates.
11
Following the "Read Parameter" procedures, step through all the parameters 1 - 30
checking them against the Factory Settings.
12
Study the parameters and verify that each parameter is appropriate for the application.
Change any parameters which need to be altered and record the new settings.
13
Program the new settings into the EMX following the "Save Parameter" procedures.
_____________________________________________________________
8-2
USERS MANUAL
EMX SERIES
COMMISSIONING PROCEDURE
_______________________________________________________________________
Commissioning Procedure
STEP
CHECK
1
Ensure the enclosure is free of metallic swarf and wire offcuts.
2
Before connecting the output terminals to the motor, carry out an insulation test of the
motor windings to earth. The reading should be in excess of 10 Megohms. If practical, an
insulation test between windings should also be carried out.
3
Connect the output terminals to the motor.
4
Ensure that all the main power terminations are tight.
5
Ensure that the voltage applied to the isolator is correct and that all three phases are
present.
6
Ensure that the incoming supply is connected to L1, L2 and L3.
7
If the EMX is installed with a bypass contactor, ensure that the contactor is bypassing the
appropriate terminals on the EMX. L1 must connect via the bypass contactor to L4, L2
must connect via the contactor to L5, and L3 must connect via the contactor to L6. If the
EMX is incorrectly bypassed, damage to the starter can result and supply fuses fail or
circuit breaker will open.
8
Ensure that the START input to the EMX is open circuit. This will ensure that the EMX can
not start while other test are carried out.
9
Apply the control supply to the fans and PT, and ensure that all fans are running freely
and the POWER LED is illuminated.
10
Check the status of all the control inputs by measuring the voltage across them. The
STOP and RESET should show zero volts if closed. If two wire control is employed, then
the STOP input should be open and have a terminal voltage of between 12 and 24 VDC.
The FLC selector input should be open and measure 12 - 24 VDC.
11
Connect an ammeter in the circuit to display the current during start. A sufficiently rated
Clamp type meter would be satisfactory, or a clamp meter on a CT output could be used.
12
Calculate the expected start current from the parameters programmed into the EMX.
[Current Limit (%) (Function 2) x Motor Full Load Current (A) (Function 1)]
13
Ensure that the motor, couplings and machine are ready for an attempted start.
14
Start the motor using the EMX and monitor the start current and the direction of rotation. If
the direction of rotation is incorrect, stop the machine, isolate the starter and swap two
phases on the input or the output of the starter. If the measured start current does not
match the calculated start current, stop the motor and check the CT wiring, CT ratio and
the parameters set in the starter.
15
Compare the measured current with the current displayed on the EMX display. If the
display is incorrect, check the CT wiring, CT ratio and the parameters set in the starter.
_____________________________________________________________
8-3
USERS MANUAL
EMX SERIES
COMMISSIONING PROCEDURE
_______________________________________________________________________
STEP
CHECK
16
If the motor does not start easily and appears to "run out of start torque", check that the
load is correctly matched to the motor, and provided the starter is appropriately rated,
increase the start current and/or current limit parameters in the EMX. If the motor starts
very easily, it may be possible to achieve a good start at a reduced start current. This may
be desirable in some installations to reduce supply disturbances or acceleration rates.
17
18
If a Bypass contactor is employed, ensure that it closes once the motor has reached full
speed and the start current has fallen. Once the bypass contactor has closed, ensure that
the EMX displays the correct current. If the Bypass contactor bridges out the CTs as well
as the SCRs, the current will read close to zero.
Ensure that the motor and machine operate satisfactorily without nuisance tripping. It may
be necessary to trim the undercurrent, Shearpin and phase imbalance protection
parameters.
Post Commissioning Recording
STEP
1
CHECK
Record function setting on the Application Data Sheet form on page 1 of this users
manual and file the Users Manual in an appropriate location for future reference.
_____________________________________________________________
8-4
USERS MANUAL
EMX SERIES
EMX PROGRAMMING PROCEDURE
______________________________________________________________________________________
_
SECTION 9
EMX PROGRAMMING PROCEDURE
Overview : This section provides instruction on the use of the EMX
Data Entry Key Pad and details adjustment of EMX user
programmable functions.
Content : Overview of EMX Function Set .........................
Programming Procedure ...................................
- Read Parameters ............................................
- Program Parameters .......................................
Function Adjustment Chart ...............................
9-2
9-3
9-4
9-5
9-6
_____________________________________________________________
9-1
USERS MANUAL
EMX SERIES
EMX PROGRAMMING PROCEDURE
______________________________________________________________________________________
_
Overview of EMX
Function Set
The EMX has four parameter categories, each accessable from the Front Panel
Display :
1.
2.
3.
4.
Primary Motor Settings : parameters/set points for use with to single speed
motors or the primary motor speed in dual speed motor applications. The
Primary Motor Settings are User Programmanble and are activated by an
open circuit on the FLC SELECT input (terminals 8,9).
Secondary Motor Settings : parameters/set points for use with the
secondary motor speed in dual speed applications, or for dual parameter
settings in special applications. The Secondary Motor Settings are User
Programmable and are activated by a closed circuit on the FLC SELECT
input (terminals 8,9).
Common Settings : parameters/set points common to both Primary and
Secondary Motor Settings. The Common Settings are always active
independent of the FLC SELECT input.
System Parameters : displays non adjustable system parameters.
EMX FUNCTION LIST
FUNCTION
DESCRIPTION
0
Run Mode
1
2
3
4
5
6
7
8
9
Motor Full Load Current
Current Limit
Initial Start Current
Start Ramp Rate
Soft Stop Ramp Rate
Motor Start Time Constant
Phase Imbalance Protection
Undercurrent Protection
Electronic Shearpin Protection
11
12
13
Phase Sequence Protection
LCD Display Mode
CT Primary Current Rating
20
EMX Software Version
21
22
23
24
25
26
27
28
29
Motor Full Load Current
Current Limit
Initial Start Current
Start Ramp Rate
Soft Stop Ramp Rate
Motor Start Time Constant
Phase Imbalance Protection
Undercurrent Protection
Electronic Shearpin Protection
CATEGORY
Primary Motor Settings
(active when FLC SELECT (terminals 8,9) open)
Use For :
Single Speed Motors
Dual Speed Motors (Primary Speed)
Common Parameter Settings
(active for both Primary and Secondary Motor Settings)
System Parameters
(read only)
Secondary Motor Settings
(active when FLC SELECT (terminals 8,9) closed)
Use For :
Dual Speed Motors (Secondary Speed)
_____________________________________________________________
9-2
USERS MANUAL
EMX SERIES
EMX PROGRAMMING PROCEDURE
______________________________________________________________________________________
_
30
Restart Delay
Common Parameter Settings
(active for both Primary and Secondary Motor Settings)
_____________________________________________________________
9-3
USERS MANUAL
EMX SERIES
EMX PROGRAMMING PROCEDURE
______________________________________________________________________________________
_
Programming
Procedure
The EMX Function set points are adjustable using the Data Entry Key Pad
1
2
4
STORE
FUNCTION
3
5
POWER
START/RUN
RUN
OVERLOAD
PHASE SEQUENCE
6
OVERCURRENT
UNDERCURRENT
PHASE LOSS
THERMISTOR
SHEARPIN
INSTALLATION
OVERTEMPERATURE
EMX SERIES
BAA10238
1.
2.
3.
4.
5.
6.
LCD Display : Used to display Function Number & Function set points
during EMX programming.
Down Arrow Key : Use to decrease the parameter count shown on the LCD
Display. The count will decrease slowly at first, and then at a fast rate if the
key is pressed and held.
Up Arrow Key : Use to increase the parameter count shown on the LCD
Display. The count will increase slowly at first, and then at a fast rate if the
key is pressed and held.
Store Key : Use to store the altered Parameter screen set point into
memory.
Function Key : Use with the Up and Down arrow keys to select the required
Function Screen.
Fault/Status Display : Displays Status/Fault information when EMX in run
mode. All LEDs illuminate when EMX in programme mode or when the
Function Key is pressed.
The Program Mode can be activated only when :
- The EMX is stopped, and all trip states reset.
- The Reset Circuit (Terminals 14,15) is closed
The EMX cannot be run when in the program mode.
_____________________________________________________________
9-4
USERS MANUAL
EMX SERIES
EMX PROGRAMMING PROCEDURE
______________________________________________________________________________________
_
READ PARAMETER PROCEDURE
Enter Program Mode & Select Desired Function
Screen
STEP 1
STORE
*
FUNCTION
*
1. Press and hold the <FUNCTION> Key. All
Fault/Status Display LEDs should illuminate.
2. Using the <UP> or <DOWN> keys select the
required function number.
3. When the required function number is displayed,
release the <FUNCTION> Key. The LCD Display
changes to show the parameter set point currently
stored in memory.
POWER
STEP 2
Repeat Step 1 for each Function to be read.
STEP 3
Exit Programming Mode
1. Using the <FUNCTION> and <DOWN> keys select
Function 0 (RUN MODE). All Fault/Status Display
LEDs, except the POWER LED should now
extinguish.
STORE
*
FUNCTION
*
POWER
_____________________________________________________________
9-5
USERS MANUAL
EMX SERIES
EMX PROGRAMMING PROCEDURE
______________________________________________________________________________________
_
PROGRAM PARAMETER PROCEDURE
Enter Program Mode & Select Desired Function
Screen
STEP 1
STORE
*
FUNCTION
*
1. Press and hold the <FUNCTION> Key. All
Fault/Status Display LEDs should illuminate.
2. Using the <UP> or <DOWN> keys select the
required function number.
3. When the required function number is displayed,
release the <FUNCTION> Key. The LCD Display
changes to show the parameter set point currently
stored in memory.
POWER
STEP 2
Alter Function Setpoint
1. Review the current parameter set point and, if
necessary, use the <UP> or <DOWN> keys to
display the desired new set point.
+
STORE
FUNCTION
*
(Note that pressing the <FUNCTION> Key will
return the display to the last stored parameter set
point)
POWER
Store The New Function Setpoint
STEP 3
STORE
FUNCTION
1. Press the <STORE> key to store the displayed set
point into memory.
2. Verify the new set point has been correctly stored
by pressing and then releasing the <FUNCTION>
Key. The LCD display should now show the new
setpoint.
*
POWER
STEP 4
Repeat Steps 1, 2 & 3 for each Function to be set.
STEP 5
Exit Programming Mode
1. Using the <FUNCTION> and <DOWN> keys select
Function 0 (RUN MODE). All Fault/Status Display
LEDs, except the POWER LED should now
extinguish.
_____________________________________________________________
9-6
USERS MANUAL
EMX SERIES
Current Limit
2.
EMX SERIES
Sets the EMX for the connected
motor full load current.
Motor Full Load
Current
1.
Start Current = Motor FLC X Current Limit
(Function 1) (Function 2)
Sets the maximum start current
limit as a percentage of motor full
load current (as set in Function 1).
PURPOSE
FUNCTION
9-7
Set so that the motor can easily
accelerate to full speed and to
optimise start characteristics.
Set to the Full Load Current (Amps)
rating shown on the motor
nameplate, or motor data sheet.
SETTING INSTRUCTIONS
USERS MANUAL
The EMX will accept parameter settings up to 550%,
however :
1. the Maximum Starter Ratings as detailed on the
Application Data Sheet at the front of this Users
Manual should not be exceeded.
2. the maximum achievable current limit for this
application is limited by the CTs selected for the
application, and supplied with the starter..
This parameter must be set high enough to allow the
motor to develop sufficient torque to start the motor and
driven load to full speed.
This parameter sets the maximum starting current which
should occur and is expressed as a percentage of the
rated Full Load Current of the Motor.
This parameter is used by the EMX :
1. to set the overcurrent protection to the rating of the
connected motor. The EMX should trip at 105% to
115% of this value after a period of time
2. in the thermal model for motor temperature simulation.
3. in the start current control algorithms. The starting
current is set and expressed as a percentage of the
Full Load Current setting.
This parameter should be set for the actual rated current
of the connected motor, not the measured current under
load.
DESCRIPTION
EMX Programming functions PRIMARY MOTOR SETTINGS
(Set for single speed motors, & primary speed on dual speed motors ; parameters active when FLC Select terminals (8 & 9) are open.)
Start Ramp Time
Soft Stop Ramp
Time
4.
5.
EMX SERIES
Sets the initial start current level for
the Current Ramp start mode.
Initial Start Current
3.
Sets the soft stop ramp time for soft
stopping of the motor.
Sets the ramp time for the Current
Ramp start mode.
PURPOSE
FUNCTION
This parameter sets the time taken for the start current to
ramp from the Initial Start Current (Function 3) setting to the
Current Limit (Function 2) setting.
If the Current Ramp start mode is
not required, set the Start Ramp
Time to 0.
USERS MANUAL
Soft Stop effectively adds inertia to a low inertial
application which would normally stop immediately. ie
pumps, conveyors.
If Soft Stop not required, set the
Soft Stop Ramp Time to 0 seconds.
9-8
This parameter sets the time taken for the voltage to be
ramped from line voltage to zero, on the initiation of a
stop. If set to 0 seconds soft stop is defeated.
If Soft Stop required, set to produce
desired motor stopping
performance.
If this parameter is set to 0 seconds, and/or the Initial
Start Current (Function 3) is set equal to the Current Limit
(Function 2), a Constant Current start will result.
This function and the Initial Start Current (Function 3) are
used together to select and adjust the Current Ramp start
mode.
If this parameter is equal to the Current Limit (Function 2)
and/or the Start Ramp Time (Function 4) is set to 0 seconds,
a Constant Current start will result.
This parameter sets the initial start current as a
percentage of the rated Full Load Current of the motor. At
the initiation of a start, the start current rapidly rises from
zero to this current setting. If this current is less than the
Current Limit (Function 2) and the Start Ramp Time (Function
4) is set greater than zero, the start current will be
controlled to rise to the programmed Current Limit level
over the time specified by the Start Ramp Time function.
This function and the Start Ramp Time (Function 4) are
used together to select and adjust the Current Ramp start
mode.
DESCRIPTION
If the Current Ramp start mode is
required, set the Start Ramp Time
to optimise start characteristics.
If the Current Ramp start mode is
not required, set the Initial Start
Current equal to the Current Limit
(Function 2).
If the Current Ramp start mode is
required, set the Initial Start Current
so that the motor begins to
accelerate immediately a start is
initiated.
SETTING INSTRUCTIONS
EMX SERIES
FUNCTION
6. Motor Start Time
Constant (MSTC)
PURPOSE
Sets the motor thermal capacity
used by the EMX thermal motor
model.
MSTC figure
Ö)
9-9
section for detail on selecting a reduced
however, where this is not
necessary greater motor protection
is achieved with a reduced MSTC
setting. (Refer to adjacent Description
figure Ö),
(Refer to adjacent Description section for
detail on determining the maximum MSTC
SETTING INSTRUCTIONS
The MSTC parameter can be set
up to the maximum motor's
maximum thermal capacity
USERS MANUAL
MAXIMISING MOTOR PROTECTION
The life of a motor is strongly influenced by its maximum winding
temperature, with a 'rule of thumb' stating that the expected life
span of a motor is halved for every ten degree rise in temperature.
The temperature rise is dependent on the motor losses and the
motor cooling. The highest stress on the motor is during start, and
can be minimised by restricting the duration and frequency of
starts. A reduced MSTC setting (Function 6) will also cause the
EMX protection to operate before the motor is thermally stressed.
For maximum motor life set the MSTC to a reduced level, using the
maximum or normalised figures only where absolutely required.
observing the modelled motor temperature as shown on the
EMX LCD Display, and adjusting the MSTC parameter such that
after a normal start which has been preceded by a period of
running at maximum load, the calculated motor temperature is
approaching 90%.
The best MSTC setting is dependent on considerations
specific to the application. If the application needs to
make use of the motor's maximum overload capacity to
start the motor or maintain continuous operation, then the
maximum MSTC figure would be appropriate. If not, the
best setting is a reduced MSTC figure which allows
uninterrupted motor operation and trips the motor as early
as possible in the event of abnormal overloads. A suitable
MSTC figure can be established by :
ie
1. MSTC = Motors maximum start time rating (from cold).
2. The above method assumes a Locked Rotor Current of 600%.
Greater accuracy will be achieved by normalising this figure to
the actual locked rotor current figure of the motor by multiplying
the maximum locked rotor time of the motor by the square of the
ratio between the actual locked rotor current and 600.
MSTC =
⎧ %LRC ⎫2 x Max Start Time
⎩ 600
⎭
The maximum recommended Motor Start Time Constant
(MSTC) setting is determined by the connected motor's
thermal capacity, and can be established in one of two
ways:
DESCRIPTION
The MSTC parameter is used by the EMX thermal motor
model to set the rate of change of the modelled motor
temperature.
Sets the level of imbalance allowed
between phases while the motor is
operating.
7.
EMX SERIES
Phase Imbalance
Protection
PURPOSE
FUNCTION
.
9-10
minimum imbalance (highest sensitivity)
:
:
10 maximum imbalance (lowest sensitivity)
1
Settings
Set to desired sensitivity level.
SETTING INSTRUCTIONS
USERS MANUAL
The phase imbalance protection sensitivity is reduced
during starting and stopping to accommodate the
discontinuous waveform.
monitoring circuit)
The parameter sets the protection in ten percent
increments, ie a setting of '2' will cause a trip if the
high phase has an average current of 120% of the
lowest phase. This is an imbalance of about 10% from
the average current. (accuracy subject to tolerance of current
The EMX monitors the three phase currents and
bases its calculations on the difference between the
highest phase current and the lowest phase current.
The readings are averaged before the calculation
requiring that there is an imbalance in the average
currents drawn.
This parameter is used to set the sensitivity of the
Phase Imbalance Protection to an imbalance in the
three phase currents.
DESCRIPTION
Electronic
Shearpin
Protection
9.
EMX SERIES
Sets the trip point for the EMX
undercurrent protection. ie the
lower limit of motor load as a
percentage of motor full load
current (as set in Function 1).
Undercurrent
Protection
8.
Sets the trip threshold for the EMX
Electronic Shearpin protection as a
percentage of Motor Full Load
Current. (as set in Function 1).
PURPOSE
FUNCTION
9-11
This protection is set equal to the
Current Limit parameter, but can be
reduced to a lower level if required.
If undercurrent protection is not
required, set below the motor's
magnetising (no load) current.
If undercurrent protection is
required, set below the lower limit
of the motor's normal working
range.
SETTING INSTRUCTIONS
USERS MANUAL
This parameter sets the trip threshold for the
Electronic Shearpin protection and is expressed as a
percentage of rated Full Load Current of the motor.
The protection is enables only after the motor reaches
full speed and will cause the starter to trip if the
measured current exceeds this setting, or reaches the
maximum input of the current monitoring circuitry.
The setting must be less than the minimum running
current of the machine, but greater than the
magnetising current of the motor for the protection to
operate. A setting of less than the magnetising current
of the motor will offer open circuit protection only. The
magnetising current of a motor is typically 25% to 35%
of the rated Full Load Current.
Undercurrent protection is primarily used to detect a
drop in load on a machine such as a pump running
dry, or an open circuit isolate on the output of a
starter.
Undercurrent protection is only enabled once the
motor has reached full speed and will cause the
starter to trip if the measured three phase current is
less than this setting.
This parameter sets the undercurrent protection
threshold and is expressed as a percentage of rated
Full Load Current of the motor.
DESCRIPTION
Sets the valid phase sequences for
the EMX Phase Sequence
Protection.
Selects the parameter(s) displayed
by the EMX LCD Display during
run.
11. Phase Sequence
Protection
12. LCD Display Mode
EMX SERIES
PURPOSE
FUNCTION
9-12
.
USERS MANUAL
Where display mode 2 is selected, the display toggles
between the current and temperature, primarily
displaying current but briefly cycling to temperature on
a regular basis.
The motor temperature is displayed as a percentage
of the maximum motor temperature as calculated by
the Thermal Model. The motor temperature display is
indicated by a leading decimal point. ie 90% reads as
.90 and 100% as 1.00. The EMX will trip when the
motor temperature reaches 1.05.
is subject to the EMX being correctly programmed with Primary
Rating of the connected CTs, and the correct installation of the CTs.
During commissioning of the EMX the LCD current display should
not be relied upon until its operation has been verified by measuring
motor current by an independent means.
The motor current is an absolute current and
displayed in Amps. Note that the integrity of the current display
motor current
motor temperature (Thermal Model)
motor current/motor temperature
Run-Time Display Parameter (s)
0
1
2
This parameter select the parameter displayed on the
EMX LCD Display during operation.
forward and reverse (no protection)
forward (positive) only
reverse (negative) only
Set for the desired run-time display
mode.
0
1
2
.
This parameter is used to enable or disable the Phase
Sequence Protection, and if enabled to set the
required valid phase sequence.
Set for the desired valid phase
sequence.
Valid Phase Sequences
DESCRIPTION
SETTING INSTRUCTIONS
EMX Programming functions COMMON PARAMETER SETTINGS
(Active for both Primary and Secondary Motor Settings.)
Sets the value of the primary
current of the EMX soft starter
current transformers
13. Current
Transformer
Primary Current
Rating
EMX SERIES
PURPOSE
FUNCTION
9-13
When setting this parameter verify
that the connected CTs are the
same CTs supplied with the EMX
and detailed on the Application
Data Sheet on the first page of this
Users Manual.
400/5, Primary Current Rating = 400A)
Set to the Primary Current Rating of
the Current Transformers
connected to the EMX. (ie CT Ratio
SETTING INSTRUCTIONS
USERS MANUAL
IF THIS PARAMETER IS INCORRECTLY SET, THE
START PERFORMANCE, DISPLAYED CURRENT
READINGS, OVERCURRENT, UNDERCURRENT
AND SHEARPIN PROTECTION WILL BE
INACCURATE.
IT IS IMPERATIVE THAT THIS PARAMETER IS SET
CORRECTLY FOR THE CONNECTED CTS AND
THAT THE CTS HAVE 5 A SECONDARIES.
This parameter tells the EMX what CTs are connected to
enable it to correctly translate the input currents from the
CTs into absolute currents for use in the starting and
thermal model calculations.
DESCRIPTION
EMX SERIES
9-14
Set so that the motor can easily
accelerate to full speed and to
optimise start characteristics.
Sets the maximum start current
limit for the secondary motor speed
as a percentage of motor full load
current (as set in Function 21).
22. Secondary
Current Limit
Start Current = Motor FLC X Current Limit
(Function 21) (Function 22)
Set to the secondary Full Load
Current (Amps) rating shown on the
motor nameplate, or motor data
sheet.
Sets the EMX for the secondary
motor full load current.
21. Secondary
Motor Full Load
Current
FUNCTION
USERS MANUAL
The EMX will accept parameter settings up to 550%,
however :
1. the Maximum Starter Ratings as detailed on the
Application Data Sheet at the front of this Users
Manual should not be exceeded.
2. the maximum achievable current limit for this
application is limited by the CTs selected for the
application, and supplied with the starter..
This parameter must be set high enough to allow the
motor to develop sufficient torque to start the motor and
driven load to full speed.
This parameter sets the maximum starting current which
should occur and is expressed as a percentage of the
rated Full Load Current of the Motor.
This parameter is used by the EMX :
1. to set the overcurrent protection to the rating of the
connected motor. The EMX should trip at 105% to
115% of this value after a period of time
2. in the thermal model for motor temperature simulation.
3. in the start current control algorithms. The starting
current is set and expressed as a percentage of the
Full Load Current setting.
This parameter should be set for the actual rated current
of the connected motor, not the measured current under
load.
EMX Programming functions SECONDARY MOTOR SETTINGS
(set for dual speed motor applications or similar; parameters active when FLC Select terminals (8 & 9) are closed.)
PURPOSE
SETTING INSTRUCTIONS
DESCRIPTION
Sets the ramp time for the Current
Ramp start mode for the secondary
motor speed.
Sets the soft stop ramp time for soft
stopping of the motor when in the
secondary motor speed.
24. Secondary
Start Ramp Time
25. Secondary
Soft Stop Ramp
Time
EMX SERIES
If the Current Ramp start mode is
required, set the Initial Start Current
so that the motor begins to
accelerate immediately a start is
initiated.
Sets the initial start current level for
the Current Ramp start mode for
the secondary motor speed.
23. Secondary
Initial Start Current
This parameter sets the time taken for the start current to
ramp from the Initial Start Current (Function 23) setting to the
Current Limit (Function 22) setting.
If the Current Ramp start mode is
not required, set the Start Ramp
Time to 0.
USERS MANUAL
Soft Stop effectively adds inertia to a low inertial
application which would normally stop immediately. ie
pumps, conveyors.
If Soft Stop not required, set the
Soft Stop Ramp Time to 0 seconds.
9-15
This parameter sets the time taken for the voltage to be
ramped from line voltage to zero, on the initiation of a
stop. If set to 0 seconds soft stop is defeated.
If Soft Stop required, set to produce
desired motor stopping
performance.
If this parameter is set to 0 seconds, and/or the Initial
Start Current (Function 23) is set equal to the Current Limit
(Function 22), a Constant Current start will result.
This function and the Initial Start Current (Function 23) are
used together to select and adjust the Current Ramp start
mode.
If this parameter is equal to the Current Limit (Function 2)
and/or the Start Ramp Time (Function 4) is set to 0 seconds,
a Constant Current start will result.
This parameter sets the initial start current as a
percentage of the rated Full Load Current of the motor. At
the initiation of a start, the start current rapidly rises from
zero to this current setting. If this current is less than the
Current Limit (Function 2) and the Start Ramp Time (Function
4) is set greater than zero, the start current will be
controlled to rise to the programmed Current Limit level
over the time specified by the Start Ramp Time function.
This function and the Start Ramp Time (Function 4) are
used together to select and adjust the Current Ramp start
mode.
DESCRIPTION
If the Current Ramp start mode is
required, set the Start Ramp Time
to optimise start characteristics.
If the Current Ramp start mode is
not required, set the Initial Start
Current equal to the Current Limit
(Function 22).
SETTING INSTRUCTIONS
PURPOSE
FUNCTION
EMX SERIES
FUNCTION
26. Secondary
Motor Start Time
Constant (MSTC)
PURPOSE
Sets the motor thermal capacity
used by the EMX thermal motor
model.
MSTC figure
9-16
Ö)
section for detail on selecting a reduced
however, where this is not
necessary greater motor protection
is achieved with a reduced MSTC
setting. (Refer to adjacent Description
figure Ö),
(Refer to adjacent Description section for
detail on determining the maximum MSTC
SETTING INSTRUCTIONS
The MSTC parameter can be set
up to the maximum motor's
maximum thermal capacity
USERS MANUAL
MAXIMISING MOTOR PROTECTION
The life of a motor is strongly influenced by its maximum winding
temperature, with a 'rule of thumb' stating that the expected life
span of a motor is halved for every ten degree rise in temperature.
The temperature rise is dependent on the motor losses and the
motor cooling. The highest stress on the motor is during start, and
can be minimised by restricting the duration and frequency of
starts. A reduced MSTC setting (Function 6) will also cause the
EMX protection to operate before the motor is thermally stressed.
For maximum motor life set the MSTC to a reduced level, using the
maximum or normalised figures only where absolutely required.
observing the modelled motor temperature as shown on the
EMX LCD Display, and adjusting the MSTC parameter such that
after a normal start which has been preceded by a period of
running at maximum load, the calculated motor temperature is
approaching 90%.
The best MSTC setting is dependent on considerations
specific to the application. If the application needs to
make use of the motor's maximum overload capacity to
start the motor or maintain continuous operation, then the
maximum MSTC figure would be appropriate. If not, the
best setting is a reduced MSTC figure which allows
uninterrupted motor operation and trips the motor as early
as possible in the event of abnormal overloads. A suitable
MSTC figure can be established by :
ie
1. MSTC = Motors maximum start time rating (from cold).
2. The above method assumes a Locked Rotor Current of 600%.
Greater accuracy will be achieved by normalising this figure to
the actual locked rotor current figure of the motor by multiplying
the maximum locked rotor time of the motor by the square of the
ratio between the actual locked rotor current and 600.
MSTC =
⎧ %LRC ⎫2 x Max Start Time
⎩ 600
⎭
The maximum recommended Motor Start Time Constant
(MSTC) setting is determined by the connected motor's
thermal capacity, and can be established in one of two
ways:
DESCRIPTION
The MSTC parameter is used by the EMX thermal motor
model to set the rate of change of the modelled motor
temperature.
EMX SERIES
Set to desired sensitivity level.
Sets the level of imbalance allowed
between phases while the motor is
operating in its secondary speed..
27. Secondary
Phase Imbalance
Protection
.
9-17
minimum imbalance (highest sensitivity)
:
:
10 maximum imbalance (lowest sensitivity)
1
Settings
SETTING INSTRUCTIONS
PURPOSE
FUNCTION
USERS MANUAL
The phase imbalance protection sensitivity is reduced
during starting and stopping to accommodate the
discontinuous waveform.
monitoring circuit)
The parameter sets the protection in ten percent
increments, ie a setting of '2' will cause a trip if the
high phase has an average current of 120% of the
lowest phase. This is an imbalance of about 10% from
the average current. (accuracy subject to tolerance of current
The EMX monitors the three phase currents and
bases its calculations on the difference between the
highest phase current and the lowest phase current.
The readings are averaged before the calculation
requiring that there is an imbalance in the average
currents drawn.
This parameter is used to set the sensitivity of the
Phase Imbalance Protection to an imbalance in the
three phase currents.
DESCRIPTION
EMX SERIES
30. Restart Delay
Sets the trip threshold for the EMX
Electronic Shearpin protection,
when operating in its secondary
speed, as a percentage of Motor
Full Load Current. (as set in Function
29. Secondary
Electronic
Shearpin
Protection
Sets the time delay between the
end of a stop and the beginning of
the next start.
21).
If undercurrent protection is
required, set below the lower limit
of the motor's normal working
range.
Sets the trip point for the EMX
undercurrent protection when the
motor is operating in its secondary
speed. ie the lower limit of motor
load as a percentage of motor full
load current (as set in Function 21).
28. Secondary
Undercurrent
Protection
9-18
The default setting for this function
is 15 seconds. This should only be
shortened if essential for process
requirements.
This protection is set equal to the
Current Limit parameter, but can be
reduced to a lower level if required.
If undercurrent protection is not
required, set below the motor's
magnetising (no load) current.
SETTING INSTRUCTIONS
PURPOSE
FUNCTION
USERS MANUAL
The Restart Delay is designed to prevent inadvertent
abuse of the starter caused by faulty control circuitry
subjecting the starter to high frequency cyclic
start/stop commands.
This parameter sets the trip threshold for the
Electronic Shearpin protection and is expressed as a
percentage of rated Full Load Current of the motor.
The protection is enables only after the motor reaches
full speed and will cause the starter to trip if the
measured current exceeds this setting, or reaches the
maximum input of the current monitoring circuitry.
The setting must be less than the minimum running
current of the machine, but greater than the
magnetising current of the motor for the protection to
operate. A setting of less than the magnetising current
of the motor will offer open circuit protection only. The
magnetising current of a motor is typically 25% to 35%
of the rated Full Load Current.
Undercurrent protection is primarily used to detect a
drop in load on a machine such as a pump running
dry, or an open circuit isolator on the output of a
starter.
Undercurrent protection is only enabled once the
motor has reached full speed and will cause the
starter to trip if the measured three phase current is
less than this setting.
This parameter sets the undercurrent protection
threshold and is expressed as a percentage of rated
Full Load Current of the motor.
DESCRIPTION
FUNCTION
Motor Full Load Current
Current Limit
Initial Start Current
Start Ramp Time
Soft Stop Ramp Time
Motor Start Time Constant
Phase Imbalance Protection
Undercurrent Protection
Electronic Shearpin Protection
Motor Full Load Current
Current Limit
Initial Start Current
Start Ramp Time
Soft Stop Ramp Time
Motor Start Time Constant
Phase imbalance Sensitivity
Undercurrent Protection
Electronic Shearpin Protection
EMX SERIES
21.
22.
23.
24.
25.
26.
27.
28.
29.
11. Phase Sequence Protection
12. LCD Display Mode
13. CT Ratio
1.
2.
3.
4.
5.
6.
7.
8.
9.
% FLC
% FLC
Amps
% FLC
% FLC
Secs
Secs
Secs
FACTORY SET
% FLC
% FLC
Units
Amps
% FLC
% FLC
Secs
Secs
Secs
FACTORY SET
FACTORY SET
9-20
SECONDARY MOTOR SETTINGS
FACTORY SET
COMMON PARAMETER SETTINGS
TYPICAL STARTER SETTINGS
FACTORY SET
FACTORY SET
USERS MANUAL
FACTORY SET
TROUBLE SHOOTING
______________________________________________________________________________________
_
SECTION 10
TROUBLE SHOOTING GUIDE
Overview : This section details the EMX diagnostic displays and
provides assistance in identifying system faults.
Content : Trouble Shooting Chart ................................... 10-2
_____________________________________________________________
_
10-1
USERS MANUAL
EMX SERIES
TROUBLE SHOOTING
______________________________________________________________________________________
_
READ MANUAL COMPLETELY PRIOR TO CONNECTING
AND COMMISSIONING THIS EQUIPMENT
Fault finding and/or repair of this
equipment must be undertaken only by suitably
qualified personnel.
WARNING
ELECTRICAL SHOCK HAZARD
ENSURE THE EMX IS COMPLETELY
ISOLATED FROM THE POWER SUPPLY BEFORE
ATTEMPTING ANY WORK ON THE UNIT
_____________________________________________________________
_
10-2
USERS MANUAL
EMX SERIES
STORE
FUNCTION
EMX SERIES
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
[ON]
[FLASH]
<< INSTALLATION
<< POWER
DISPLAY / SYMPTOM
input isolator open
output isolator open
links not fitted to motor
supply or semiconductor fuses not installed
contactor not closing
motor incorrectly wired in three wire
motor incorrectly wired in six wire
10-3
Installation trips can occur only during
pre-start checks. If an Installation trip
appears to occur during run, the control
input signals may be intermittent and
have commanded the EMX to stop then
immediately restart.
a)
b)
c)
d)
e)
f)
g)
Most likely cause of problems:
a) three phase present on the inputs
b) continuous circuits on each output
When a start is initiated the EMX expects
to find :
No Three Phase, Or Phase Loss, At
Prestart Checks
DESCRIPTION / CAUSE
If the motor is connected in the three wire connection, there should be
a very low resistance between all three output terminals. i.e. L4, L5,
L6. This should be the resistance of the stator winding and will be a
very low value. If there is a high value of resistance or an open circuit,
check the connections to the motor and output isolator if employed.
If the motor is connected in the six wire connection, there should be a
very low resistance between each output terminal and an input
terminal. This should be the resistance of the stator winding and will be
a very low value. i.e. L4 - L2, L5 - L3, L6 - L1 or L4 - L3, L5 - L1, L6 L2. If there is a high value of resistance or an open circuit, check the
connections to the motor and output isolator if employed.
measure the three phase voltage on the input of the contactor.
ensure the contactor operates when the starter is required to start. If
the contactor does not operate, check the control circuitry connected to
the contactor coil. Check that when the contactor closes, three phase
voltages are present on the input to the EMX.
Verify the integrity of the stop circuit to the EMX. Note that
the stop input is active 24VDC. Contacts used for controlling
this input should be low voltage, low current rated.
i)
ii)
If an input contactor is used:
If an input contactor is not used, measure the three phase
voltages on the input to the EMX. L1, L2, L3. If no voltage is
present, check for inline fuses.
Locate the input isolator. With the input isolator closed,
measure the three phase voltages on the input to the isolator
and the output of the isolator. If no volts present on the input
check for inline fuses.
ii)
i)
With the input isolator open, measure the output connection.
ACTION / TEST
USERS MANUAL
Section 6
REF.
STORE
FUNCTION
FUNCTION
FUNCTION
EMX SERIES
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
STORE
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
STORE
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
[ON]
<< INSTALLATION
<< POWER
OR
[ON]
[FLASH]
[FLASH]
[FLASH]
<< INSTALLATION
<< POWER
<< POWER
DISPLAY / SYMPTOM
Frequency Out Of Range
Restart Delay Function Operative
severe phase shift in one phase of the supply
low voltage on one phase of the supply
incorrect motor wiring in three wire connection
incorrect wiring in six wire connection
circuits other than just motor connected to output
very distorted supply waveform
significant leakage through the SCRs
failed SCR(s)
control pcb fault
10-4
Installation trips can occur only during
pre-start checks. If an Installation trip
appears to occur during run, the control
input signals may be intermittent and
have commanded the EMX to stop then
immediately restart.
a)
b)
c)
d)
e)
f)
g)
h)
i)
Most likely causes of problems are:
Before starting, the EMX expects the
three phases to be present and correctly
positioned relative to each other, i.e. 120
degrees apart. The EMX monitors the
waveform between the input and the
output on each phase and measures the
phase relation ship between them.
Installation Fault

a) Loss of input three phase while motor is running
b) Genset Governor Out Of Calibration
Most likely cause of problems
a) 48 - 52 Hz
b) 58 - 62 Hz
The EMX measures the supply frequency
and expects this to be either :

DESCRIPTION / CAUSE
Verify the integrity of the stop circuit to the EMX. Note that
the stop input is active 24VDC. Contacts used for controlling
this input should be low voltage, low current rated.
a) three wire installation on a supply with earthed neutral,
with three phase voltage on the input, and the starter in
the OFF mode, measure the voltage between the outputs
and neutral (or earth). This should read less than 10 volts.
b) three wire installation on a supply with no neutral, with
three phase voltage on the input, and the starter in the
OFF mode, measure the voltage from input to output on
each phase, i.e. L1 - L4, L2 - L5, L3 - L6. The voltages
should be very close to equal.
c) six wire installation: measure the voltage from input to
output on each phase, i.e. L1 - L4, L2 - L5, L3 - L6. The
voltages should be very close to equal.
d) with both the supply and motor disconnected, measure
the resistance between the input and output on each
phase. L1 - L4, L2 - L5, L3 - L6. The resistance should be
close to 33Kohms. If less than 33Kohms, then there could
be excess leakage through the SCRs. If greater than
33Kohm, then there could be a control pcb fault.
Wait for timeout of the Restart Delay and try again.
Check supply
ACTION / TEST
USERS MANUAL
REF.
STORE
FUNCTION
FUNCTION
EMX SERIES
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
STORE
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
[ON]
[ON]
<< PHASE SEQUENCE
<< POWER
<< OVERTEMPERATURE
<< POWER
DISPLAY / SYMPTOM
[ON]
[ON]
poor ventilation
recirculation of exhaust air
cooling fans not operating
extended starting beyond the starter ratings
loose EMX temperature sensor leads
10-5
The EMX compares the measured phase
sequence on the input terminals with the
required phase sequence and will not
start unless a valid measurement is made.
Invalid Phase Sequence
a)
b)
c)
d)
e)
Most likely causes of problems are:
The EMX monitors the internal heatsink
temperature and will trip and not restart
immediately after an over temperature trip
until the heatsinks have cooled a little.
EMX Overtemperature
DESCRIPTION / CAUSE
Check the incoming phase sequence against the Valid Phase
Sequences programmed in Function 11. Rotate supply
cables or adjust Valid Phase Sequence setting as
appropriate.
Verify that the EMX internal temperature sensor leads are
securely connected to the Main Control PCB and the
Snubber PCBs.
Ensure heated exhaust air is not re-circulating back to the air
intake.
Ensure that actual operating duty is within starter ratings.
Ensure that there is adequate ventilation in the enclosure into
which the starter has been mounted.
Ensure that starters immediate ambient temperature does
not exceed unit ratings.
ACTION / TEST
USERS MANUAL
Section 3
Section 5
REF.
STORE
FUNCTION
FUNCTION
EMX SERIES
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
STORE
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
[ON]
<< THERMISTOR
<< POWER
<< OVERCURRENT
[ON]
[ON]
DISPLAY / SYMPTOM
10-6
a) hot motor (thermistors operating correctly)
b) open circuit in thermistor circuit.
c) thermistors not connected and no shorting link
fitted
Check thermistor circuit.
If no motor thermistors are connected ensure that a link is
fitted across EMX motor thermistor terminals (28,29).
The EMX monitors the thermistor input
and will trip (or not restart) if there is a
thermistor fault present.
Most likely causes of problems are:
Wait for motor to cool.
motor overloaded
motor flc parameter setting incorrect
C.T. primary parameter setting incorrect
Motor restarted too soon after stop or trip
current additional to motor current passing
through the CTs
Ensure Start Current Ratio is adequate to allow the motor to
easily accelerate to full speed.
Ensure Motor FLC (Function 1) and Motor Start Time
Constant (Function 6) are set correctly for the connected
motor.
Check motor and/or load for cause of motor overload. Allow
motor time to cool, reset and restart.
ACTION / TEST
Thermistor Trip
a)
b)
c)
d)
e)
Most likely causes of problems are:
The EMX monitors the current drawn by
the motor and mathematically models the
expected motor temperature using the
motor start time constant set in the starter
parameters. The EMX will trip if the
modelled temperature reaches 105%.
The EMX will not allow a restart after an
over current trip until the thermal model
has reached a temperature below the trip
temperature.
NB (The motor must be allowed to cool
sufficiently for a hot restart to occur. If the
thermal margin is small, the motor may
only get to part speed before re-tripping.)
Overcurrent Trip
DESCRIPTION / CAUSE
USERS MANUAL
Section 3
Section 3
REF.
STORE
FUNCTION
EMX SERIES
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
[ON]
<< PHASE LOSS
<< POWER
[ON]
DISPLAY / SYMPTOM
a)
b)
c)
d)
e)
f)
10-7
one phase low in voltage
motor problem
loose cable or busbar joint
unequal C.T. ratios
incorrect C.T. wiring
current additional to motor current passing
through CTS
Most likely causes of problems are:
The EMX monitors the current drawn on
each phase and calculates the difference
between the currents flowing on the three
phases. The difference between the
highest phase and the lowest phase is
compared with the acceptable limit set in
the starter parameters (user selectable)
and trips if there is a continuous condition
outside the preset limits.
Phase Loss Trip
DESCRIPTION / CAUSE
L4-L2,L5-L3,L6-L1 or
L4-L3,L5-L1,L6-L2
A circuit must be measured from each of the outputs
to an input, but the input must not be on the same
phase. Acceptable combinations are
There should be NO circuits measured between the
outputs, (L4-L5-L6). Note that it may be necessary to
remove the control circuit fuses to isolate the fans
from the inputs.
6 Wire Completely isolate the EMX from the supply and
using a meter, measure the circuit between each of
the outputs and inputs.
3 Wire Completely isolate the EMX from the supply and
using a meter measure the circuit between each of
the three outputs.
Ensure that the circuit from the EMX to the motor is
complete.
Ensure that all three phases are present at the EMX input.
Measure phase to phase, and phase to neutral for each
phase.
ACTION / TEST
USERS MANUAL
Section 6
Section 6
Section 3
REF.
STORE
FUNCTION
FUNCTION
EMX SERIES
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
STORE
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
[ON]
<< SHEARPIN
[ON]
<< POWER [ON]
<< UNDERCURRENT
<< POWER
DISPLAY / SYMPTOM
[ON]
10-8
a) motor severely overloaded
b) driven load jammed
c) power factor correction connected on output of
EMX
Most likely causes of problems are:
The EMX monitors the current drawn by
the motor and trips if the shear pin limit
set in the starter parameters is exceeded.
Electronic Shearpin Trip
Most likely causes of problems are:
a)
broken belts
b)
pump running dry
The EMX monitors the running current of
the motor and trips if this falls below the
under current limit set in the starter
parameters.
Motor Undercurrent Trip
DESCRIPTION / CAUSE
Check motor and load for cause of instantaneous overload.
Reset and restart.
USERS MANUAL
Section 3
Section 3
Check load for cause of undercurrent situation. The EMX will
trip at the undercurrent level set in Function 8.
Reset and Restart.
REF.
ACTION / TEST
STORE
FUNCTION
<< OVERLOAD
[ON]
EMX SERIES
Front Panel Display Not Functioning Or
Operating Erratically.
EMX SERIES
OVERTEMPERATURE
INSTALLATION
SHEARPIN
THERMISTOR
PHASE LOSS
UNDERCURRENT
OVERCURRENT
PHASE SEQUENCE
OVERLOAD
RUN
START/RUN
POWER
DISPLAY / SYMPTOM
Overload [ON]
Overload Indication [Flickering]
10-9
No, or incorrect, control voltage applied to
the EMX.

Motor operating in overload.
DESCRIPTION / CAUSE
Ensure all supply phases are present.
Ensure the correct voltage is applied to the EMX Control and
Fan Supply terminals (1,2,3)
Extended operation in an overloaded state may cause an
overcurrent trip depending on the magnitude of the overload.
Check motor/machine loading.
Dependant on application requirement. Transient/Short Term
overloads are a normal part motor operation for some load
types.
ACTION / TEST
USERS MANUAL
Section 7
Section 3
REF.
EMX SERIES
EMX Will Not Store Programmed
Function Settings
EMX Will Not Enter Program Mode
DISPLAY / SYMPTOM
Check integrity of Reset circuit.
Reset EMX.
Stop EMX
Ensure the correct voltage is applied to the EMX Control and
Fan Supply terminals (1,2,3)
Verify the integrity of the EMX Start, Stop & Reset control
inputs by placing an ammeter in series with each of the
control inputs. The ammeter should measure a DC current
greater than 5mA under normal circumstances. If no current
is measured replace damaged control PCBs.
Reset circuit not closed.
EMX trip state not reset.
EMX is running.
Incorrect, control voltage applied to
the EMX.
Damaged EMX Control Inputs.

Ensure programmed set point is within EMX limits.
Parameter set point is outside
allowable limits.

10-10
User programmed settings must be stored by using the
key, before moving to another Function No.
Incorrect programming procedure.

<STORE>
Use both <FUNCTION> AND <UP> keys to select desired
program function.
Incorrect programming procedure.
ACTION / TEST

DESCRIPTION / CAUSE
USERS MANUAL
Section 3
Section 9
Section 9
REF.
EMX SERIES
EMX Does Not Respond To Start
Signal.
DISPLAY / SYMPTOM
Ensure the correct voltage is applied to the EMX Control and
Fan Supply terminals (1,2,3,4,5,6 & 7).
Verify the integrity of the EMX Start, Stop & Reset control
inputs by placing an ammeter in series with each of the
control inputs. The ammeter should measure a DC current
greater than 5mA under normal circumstances. If no current
is measured replace damaged control PCBs.
No, or incorrect control voltage
applied to the EMX.
Damaged EMX Control Inputs.

10-11
Section 7
Ensure that circuits connected to the EMX Stop terminals
(12,13) and Reset terminals (14,15) are closed. If no external
circuits are connected, ensure a link is fitted.
Stop and/or Reset circuits open.

USERS MANUAL
Section 7
Section 3
Wait for timeout of the Restart Delay and try again.
Restart Delay function operative.

Verify the integrity of circuits connected to EMX Start, Stop,
Reset and FLC Select control inputs. Switch contacts used in
these circuits should suitable for use with electronic circuits.
Circuit integrity may be checked using a volt meter and
measuring the voltage across the terminals. If there is
24VDC measured across either of the terminals when the
switch is closed, the switch/control is connected incorrectly or
is faulty.
Section 9
Exit program mode by using the <FUNCTION> and <DOWN>
keys to select Function 0 (RUN MODE).
REF.
EMX is still in program mode. All LED
are illuminated.
ACTION / TEST

DESCRIPTION / CAUSE
EMX SERIES
Motor Does Not Breakaway/Accelerate
To Full Speed.
Measured Start Current Different To
Programmed Start Current.
DISPLAY / SYMPTOM
Ensure that the programmed Current Limit (Function 2) and
Motor FLC (Function 1) parameters do not exceed the EMX
maximum ratings as detailed in the Applications Data Sheet
on the first page of this manual.
Ensure Primary and Secondary settings are operative as
appropriate
Starter Maximum Ratings Exceeded
Incorrect parameter set being used.
(ie Primary - Secondary motor
settings)

Increase the Current Limit setting (Function 2) so that the motor
can produce sufficient torque to accelerate the load to full
speed. (NOTE : If the motor and load has previously
accelerated to full speed at the existing Current Limit setting,
ascertain why start torque requirements have increased).
Ensure motor and load turn freely.
Motor/Load jammed.

Open
Closed
Insufficient Start Current
Primary (Functions 1 > 9)
Secondary (Functions 21 > 29)

10-12
Section 6
Ensure that each of the three EMX CTs are installed on
different phases, that they monitor line current and are not
bypassed by bridging contactors etc.
Incorrect CT installation.

USERS MANUAL
Section 3
Section 6
Ensure the CTs connected to the EMX are those supplied
with the EMX and detailed in the Application Data Sheet on
the first page of this manual.
Incorrect CTs connected to the EMX.

Operative When
FLC Select Input
(Terminals 8,9)
Section 6
Ensure that Function 13, CT Primary Current Rating is
correctly set for the installed EMX CTs.
Incorrect CT Primary Current Rating
setting (Function 13)

Parameter Set
Section 6
Check function set points. User programmed settings must
be stored by using the <STORE> key, before moving to
another Function No.
Section 9
REF.
Function set points not set as
expected due to incorrect
programming procedure.
ACTION / TEST

DESCRIPTION / CAUSE
EMX SERIES
Soft Stop Does Not Operate
10-13
Ensure the line contactor, if used, does not open until the soft
stop is completed. The EMX Main Contactor relay output
(Terminals 18,19) provides appropriate control for line
contactors.
Check SCRs
SCR Failure
Line contactor being operated by
inappropriate stop circuit.
Ensure EMX CT's are correctly connected.
EMX CTs not connected to EMX terminals
(31,32,33 & 34)
USERS MANUAL
Section 7
Section 6
Section 6
Ensure that no power factor correction capacitors are
connected on the output of the EMX. This can cause starter
damage. Power Factor Correction capacitors, if used must be
fitted on the input side of the starter.
Power Factor Correction capacitors
connected to output of EMX.
DOL or Uncontrolled Start
REF.
Section 3
ACTION / TEST
If using Uni-Start Current Ramp ensure the Initial Start
Current (Function 3) is correctly set. (NOTE : When using UniStart Current Ramp there may be some delay in motor
breakaway when the machine is heavily loaded.)
Initial Start Current set too low.
DESCRIPTION / CAUSE
Motor Does Not Breakaway
Immediately A Start Is Initiated.
DISPLAY / SYMPTOM
EMX SERIES
EMX FLC Select Not Working.
Intermittent Starter Operation
DISPLAY / SYMPTOM
10-14
Restart Delay function operative.
Damaged EMX Control Inputs.

Faulty Control Circuits
DESCRIPTION / CAUSE
USERS MANUAL
Section 3
Wait for timeout of the Restart Delay and try again.
Verify the integrity of the FLC Select control input by placing
an ammeter in series with the FLC Select input. The
ammeter should measure a DC current greater than 5mA
under normal circumstances. If no current is measured
replace damaged control PCBs.
Section 4
REF.
Verify the integrity of circuits connected to EMX Start, Stop,
Reset and FLC Select control inputs. Switch contacts used in
these circuits should suitable for use with electronic circuits.
Circuit integrity may be checked using a volt meter and
measuring the voltage across the terminals. If there is
24VDC measured across either of the terminals when the
switch is closed, the switch/control is connected incorrectly or
is faulty.
ACTION / TEST
APPENDIX
_______________________________________________________________________
Off Mode
1) RELAY outputs. In the OFF mode, the
Main Contactor, Start/Run and Run relay
outputs are in their normally open state
and the trip relay is in the normal state
also.
2) PROTECTION inputs. In the OFF
mode, the starter microcomputer monitors
the thermistorinputs and models motor
temperature.
a) If the thermistor input is connected to
a circuit of resistance greater than
2kohm, the starter will enter the TRIP
mode.
b) If the thermal model exceeds 1.05, the
starter will enter the TRIP mode.
3) CONTROL inputs. In the OFF mode,
the starter microcomputer monitors the
START,STOP, RESET and keypad inputs.
a) If the RESET input is open circuit, the
EMX will ignore all other inputs.
b) If the keypad function key is pressed,
the starter will enter the programming
mode.
c) If the STOP, START and RESET are
closed, the starter will enter the
PRESTART mode. N.B. The START
input is only monitored in the OFF
mode and SOFT STOP mode.
EMX SERIES
11-1
USERS MANUAL
APPENDIX
_______________________________________________________________________
Prestart Mode
1) RELAY outputs. In the PRESTART
mode, the main contactor is closed, the
starter microcomputer executes a number
of measurements, and depending on the
results of these, either auto configures
itself and enters the START mode, or trips
on an installation or phase sequence fault.
2) PROTECTION inputs. In the
PRESTART mode, the main contactor
relay output is closed, the starter
microcomputer measures the supply
frequency, motor connection ,phase
sequence and the presence of all phases.
Depending on the results of these
measurements, either auto configures
itself and enters the START mode, or trips
on an installation or phase sequence fault.
3) CONTROL inputs. In the PRESTART
mode, the main contactor is closed, the
starter microcomputer executes a number
of measurements, and depending on theresults of these, either auto configures
itself and enters the START mode, or trips
on an installation or phase sequence fault.
EMX SERIES
11-2
USERS MANUAL
APPENDIX
_______________________________________________________________________
Start Mode
1) RELAY outputs. In START mode, the
main contactor is closed, and the start/run
is closed.
a) If the output voltage from the starter
reaches full voltage, the starter will
enter the RUN mode.
2) PROTECTION inputs. In the START
mode, the starter microcomputer monitors
the thermistor inputs, the phase
imbalance and models motor temperature
a) If the thermistor input is connected to
a circuit of resistance greater than2kohm, the starter will enter the TRIP
mode.
b) If the thermal model exceeds 1.05, the
starter will enter the TRIP mode.
c) If the Phase Imbalance protection
operates, the starter will enter the
TRIP mode.
d) If the output voltage from the starter
reaches full voltage, the starter will
enter the RUN mode.
3) CONTROL inputs. In the START
mode, the starter microcomputer monitors
the STOPand RESET.
a) If the STOP is open and the RESET is
closed, the starter enters the SOFT
STOP mode.
b) If both the STOP and the RESET are
open, the starter will immediately stop
and enter the OFF mode.
c) If the output voltage from the starter
reaches full voltage, the starter will
enter the RUN mode.
EMX SERIES
11-3
USERS MANUAL
APPENDIX
_______________________________________________________________________
Run Mode
1) RELAY outputs. In RUN mode, the
main contactor is closed, the start/run is
closed relay output and the run is closed.
2) PROTECTION inputs. In the RUN
mode, the starter microcomputer monitors
the thermistor inputs.
a) If the thermistor input is connected to
a circuit of resistance greater than
2kohm, the starter will enter the TRIP
mode.
b) If the thermal model exceeds 1.05, the
starter will enter the trip mode.
c) If the Phase Imbalance protection
operates, the starter will enter the trip
mode.
c) If the undercurrent protection
operates, the starter will enter the trip
mode.
d) If the shear pin protection operates,
the starter will enter the trip mode.
3) CONTROL inputs. In the RUN mode,
the starter microcomputer monitors the
STOP andRESET.
a) If the STOP is open and the RESET is
closed, the starter enters the SOFT
STOP mode.
b) If both the STOP and the RESET are
open, the starter will immediately stop
and enter the OFF mode.
EMX SERIES
11-4
USERS MANUAL
APPENDIX
_______________________________________________________________________
Soft Stop Mode
1) RELAY outputs. In SOFT STOP mode,
the run contact is open. The start/run and
main contactor are closed. The output
voltage is reduced at the ratedetermined
by the stop time parameter. (soft stop)
a) If the stop time is zero, the starter
immediately enters the OFF mode.
b) As the output voltage approaches
zero, the starter enters OFF mode.
2) PROTECTION inputs.
a) If the stop time is zero, the starter
immediately enters the OFF mode.
b) If the thermistor input is connected to
a circuit of resistance greater than2kohm, the starter will enter the TRIP
mode.
c) If the thermal model exceeds 1.05, the
starter will enter the trip mode.
d) If the Phase Imbalance protection
operates, the starter will enter the trip
mode.
e) As the output voltage approaches
zero, the starter enters OFF mode.
3) CONTROL inputs. In the SOFT STOP
mode, the starter microcomputer monitors
the START, STOP and RESET.
In SOFT STOP mode, the output voltage
is reduced at the rate determined by thestop time parameter. (soft stop)
a) If the stop time parameter is zero, the
starter immediately enters the OFF
mode.
b) If both the STOP and the RESET are
open, the starter will immediately stop
and enter the OFF mode.
c) If the START and STOP are closed,
the starter enters the START mode.
d) As the output voltage approaches
zero, the starter enters OFF mode.
EMX SERIES
11-5
USERS MANUAL
APPENDIX
_______________________________________________________________________
Trip Mode
In TRIP mode, the main contactor, run
and start/run contacts are open and the
trip relay changes mode. SCR conduction
is inhibited.
a) If the RESET is closed, the starter
enters the OFF mode.
EMX SERIES
11-6
USERS MANUAL
INDEX
______________________________________________________________________________________
_
A
Analogue Outputs
Motor Current ...................................................
Motor Temperature (Thermal Model) ................
Application Data Sheet ..............................................
H
7-8
7-8
i
B
Bus Bar Configuration ................................................
Bypass Contactors
Use for Non-ventilated Enclosures ...................
Control of ..........................................................
5-3
J
5-8
6-6
K
L
Caution Statements ................................................... 1-2
Commissioning Procedure
Commissioning ................................................. 8-3
Post-commissioning Recording ........................ 8-3
Pre-commissioning Checks .............................. 8-2
Commissioning Record ..............................................
i
Common Settings ...................................................... 9-2
Control Inputs
Operational Overview ....................................... 7-4
Ratings ............................................................. 4-3
Start .................................................................. 7-3
Stop .................................................................. 7-3
Reset ................................................................ 7-3
FLC Select ........................................................ 7-3
Control Outputs
Operational Overview ....................................... 7-7
Ratings ............................................................. 4-3
Main Contactor ................................................. 7-5
Start/Run .......................................................... 7-5
Run ................................................................... 7-5
Trip ................................................................... 7-5
Control Supply ........................................................... 7-2
Cooling Fan Supply .................................................... 7-2
Current Ratings
EMX Series ...................................................... 4-4
Application Specific ..........................................
i
Current Output ........................................................... 7-8
Current Transformers (EMX)
Installation ........................................................ 6-2
Connection of ................................................... 6-2
Programming EMX for connected CTs ............. 9-12
D
Digital Display
Program Mode .................................................. 9-3
Run Mode ......................................................... 3-14
Dimensions ................................................................ 5-2
Dual Speed Motors
Overview .......................................................... 6-7
Program EMX for use with : ............................. 9-2
E
Electronic Shearpin Protection
Description ....................................................... 3-12
Adjustment of :
(primary motor speed) ................................ 9-10
(secondary motor speed) ........................... 9-17
Electronics Supply ..................................................... 7-2
Emergency Stop ......................................................... 7-3
F
7-3
9-2
G
General Description ...................................................
Input/Output Bus Bar Configuration ...........................
5-3
C
FLC Select Input ........................................................
Function List ...............................................................
I
2-2
LCD Display
Description ........................................................ 3-14
Adjustment of .................................................... 9-11
Line Contactors
Use of ............................................................... 6-5
Control of .......................................................... 6-5
M
Main Contactor Control Output ................................... 7-5
Motor Connection
3 Wire ............................................................... 6-4
6 Wire (Inside Delta) ......................................... 6-4
Dual Speed Motors ........................................... 6-7
Motor Current
LCD Display ...................................................... 3-14
Analogue Signal (4-20mA) ................................ 7-8
Motor Start Time Constant (MSTC)
Description ........................................................ 3-8
Adjustment of .................................................... 9-8
Motor Temperature
LCD Display ...................................................... 3-14
Analogue Signal (4-20mA) ................................ 7-8
Mounting Precautions ................................................ 5-5
N
O
Output A ..................................................................... 7-8
Output B ..................................................................... 7-8
Output/Input Bus Bar Configuration ........................... 5-3
Ouput Signals (4-20mA)
Motor Current .................................................... 7-8
Motor Temperature ........................................... 7-8
Overtemperature Protection (Starter) ......................... 3-12
Overload Indication LED ............................................ 3-13
P
Parameter List ............................................................
Phase Imbalance Protection
Description ........................................................
Adjustment of :
(primary motor speed) ................................
(secondary motor speed) ...........................
Phase Sequence Protection
Description ........................................................
Adjustment of ....................................................
Power Factor Correction ............................................
Primary Motor Settings ...............................................
Programming Procedure ............................................
Programmable Motor Thermal Model
Description ........................................................
Adjustment of :
(primary motor speed) ................................
(secondary motor speed) ...........................
Protection
Overview ...........................................................
Prestart .............................................................
Run-Time ..........................................................
9-2
3-10
9-9
9-16
3-11
9-11
6-6
9-2
9-3
3-8
9-8
9-15
3-5
3-5
3-6
_____________________________________________________________
-- a -USERS MANUAL
EMX SERIES
INDEX
______________________________________________________________________________________
_
Run-Time Trip Warnings ..................................
Protection
Programmable Motor Thermal Model ...............
Phase Imbalance ..............................................
Thermistor ........................................................
Undercurrent ....................................................
Electronic Shearpin ..........................................
Phase Sequence ..............................................
Starter Overtemperature ..................................
3-13
3-8
3-10
3-11
3-11
3-12
3-11
3-12
R
Reset Input .................................................................
Run Control Output ....................................................
7-3
7-5
S
Schematic ..................................................................
Secondary Motor Settings ..........................................
Shearpin Protection
Description .......................................................
Adjustment of :
(primary motor speed) ................................
(secondary motor speed) ...........................
Six Wire Motor Connection ........................................
Soft Start Modes
Uni-Start Constant Current ...............................
Uni-Start Current Ramp ....................................
Soft Stop Modes
Uni-Stop Soft Stop ............................................
Specifications .............................................................
Start Input ..................................................................
Starter Overtemperature Protection ...........................
Start/Run Control Output ...........................................
Stop Input ...................................................................
System Parameters ...................................................
4-2
9-2
3-12
9-10
9-17
6-4
3-2
3-3
3-4
4-3
7-3
3-12
7-5
7-3
9-2
U
Undercurrent Protection
Description ........................................................
Adjustment of :
(primary motor speed) ................................
(secondary motor speed) ...........................
Uni-Start Constant Current Soft Start
Description ........................................................
Adjustment of :
(primary motor speed) ................................
(secondary motor speed) ...........................
Uni-Start Current Ramp Soft Start
Description ........................................................
Adjustment of :
(primary motor speed) ................................
(secondary motor speed) ...........................
Uni-Stop Soft Stop
Description ........................................................
Adjustment of :
(primary motor speed) ................................
(secondary motor speed) ...........................
3-11
9-10
9-17
3-2
9-6
9-13
3-3
9-7
9-14
3-4
9-7
9-14
V
Ventilation
Starter Assisted ................................................
Standard Enclosure Ventilation .........................
Non Ventilated Enclosures ...............................
5-5
5-7
5-8
W
Weights
.....................................................................
5-2
X
T
Y
Temperature Output ................................................... 7-8
Thermistor Protection ................................................. 3-12
Three Wire Motor Connection .................................... 6-4
Trip Control Output .................................................... 7-5
Z
_____________________________________________________________
-- b -USERS MANUAL
EMX SERIES

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