Emheater EM-GS Series User manual

China EM Technology LimitedAddress:No.80, Baomin 2 road, Xixiang, Bao'an District,Shenzhen ,ChinaPhone:86-0755-29985851Fax:[phone]Zip code:518101Website :www.emheater.comChina EM Technology LimitedUser’s Manual
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EM-GS User's Manual Safety Clauses
I
Safety Clauses
Thanks for your using EMHEATER intelligent motor soft starter, this product is used for three-phase squirrel
cage induction motor soft starting and soft stopping control. Before using, please carefully read and understand the
contents of this manual.
In the process of using the soft starter, please note the following Safety Clauses:
Please check this user manual carefully before using the product.
Only the technical person is allowed to install the product.
To be sure that the motor is correctly matched with the soft starter.
It is forbid to connect capacitors to the output terminals (U V W).
Please seal the terminal switch insulation glue after finishing connect them.
The soft starter and its enclosures must be fixedly earthed.
During the maintenance and repair, the input must be off-power.
This user manual content may be changed due to technical reasons or modified. We reserve the updating right.

Table of Contents EM-GS User's Manual
II
Table of Contents
1. EM-GS Series Soft Starter..................................................................................................................................... 1
1.1 Motor soft starter profile ................................................................................................................................. 1
1.2 The main function............................................................................................................................................ 1
1.3 The main feature of soft starter........................................................................................................................ 1
1.4 Technical specification.................................................................................................................................... 2
2. Nameplate Explanation and Inspection ................................................................................................................. 4
3. Usage Condition and Installation........................................................................................................................... 5
3.1 The usage condition......................................................................................................................................... 5
3.2 The installation requirement............................................................................................................................ 5
3.3 The installation dimensions............................................................................................................................. 6
3.4 Installation diagram......................................................................................................................................... 7
4. Connection and External Terminal........................................................................................................................ 9
4.1 The external terminal....................................................................................................................................... 9
4.2 The communication interfaces......................................................................................................................... 9
5. Control Panel and Operation ............................................................................................................................... 12
5.1 The operation of control panel....................................................................................................................... 12
5.2 Parameters set and explanation...................................................................................................................... 13
5.3 Parameters code function explanation........................................................................................................... 15
5.4 Helping message and explanation ................................................................................................................. 15
5.5 The complete solution of default setting and user debugging ....................................................................... 16
6. Protection Functions and Directions.................................................................................................................... 17
6.1 Protection classes and explanation ................................................................................................................ 17
7. Test Run and Application .................................................................................................................................... 19
7.1 Power on to test running................................................................................................................................ 19
7.2 The starting mode and application................................................................................................................. 20
7.2.1 Current-limit to start............................................................................................................................... 20
7.2.2 Voltage ramp to start............................................................................................................................... 20
7.2.3 Torque control + current limit or + voltage ramp to start....................................................................... 21
7.2.4 Current ramp to start .............................................................................................................................. 21
7.2.5 Voltage current-limiting double closed-loop start .................................................................................. 22
7.3 The stopping mode and application............................................................................................................... 22
7.3.1 Soft-stopping Mode................................................................................................................................ 22
7.3.2 Free-stopping Mode ............................................................................................................................... 22
7.4Special application.......................................................................................................................................... 22
7.5 Application examples .................................................................................................................................... 23
Appendix I ............................................................................................................................................................... 24
Appendix II.............................................................................................................................................................. 25
Quality Warranty ..................................................................................................................................................... 27

EM-GS User's Manual 1. EM-GS Series Soft starter
1
1. EM-GS Series Soft Starter
1.1 Motor soft starter profile
Intelligent motor soft starter, the use of intelligent digital control; With the single chip processor as the intelligence
center, thyristor module for actuators for full automatic control motor. It applies various squirrel-cage asynchronous
motor control of load, the motor can smooth starting under any working conditions, protect the drag system, reduce
the starting current impact on power grid, ensure reliable motor starting. Smoothly soft stopping function can
effectively solve the inertial system surge problem, eliminate the drag system of inertial impact, that is traditional
equipment cannot be achieved. Intelligent digital motor soft start equipment system with the complete protection
function, extend the service life of the system, reduce the cost of system cost, improve the reliability of system and
compatible with all the functions of starting equipment; It is a new ideal alternative for traditional star triangle
starter and self-coupling decompression starter.
1.2 The main function
Effectively reduce the starting current of the motor; Can reduce the distribution capacity, avoid grid expansion
investment.
Reduce the starting stress of motor and load equipment; Prolong the service life of the motor and related
equipments.
Soft stopping function can effectively solve the parking surge problem of inertial systems; That is a traditional
starting equipment cannot be achieved.
With six unique starting mode; To adapt to the complex motor and load, achieve perfect priming effect.
With complete and reliable protection function; effectively protect the safety of motor and related production
equipment.
Intelligent motor soft starter, the application of network technology used motor control technology to adapt to
the rapid development of electric power automation technology in the higher requirements.
1.3 The main feature of soft starter
Reliable quality
The computer simulation design.
SMT production process.
Good EMC performance.
The machine before delivery on the high temperature aging, vibration test.
Perfect and reliable system protection function
Protection of no voltage, less voltage and over voltage.
Protection of overheating and starting time too long.
Protection of Input phase lost, output phase lost and 3phase unbalance.
Protection of starting over current, running overload, and load short circuit protection.
Maintenance function
Fault self-diagnosis(short circuit, over voltage, less voltage, one phase grounded, motor overload, one phase lost,
motor blocked, and intelligent software can inspect drag system working state).
Combination of modular design, according to the fault display content, quick troubleshooting.
Independent intellectual property products

1. EM-GS Series Soft starter EM-GS User's Manual
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Independently software copyright.
Motor starting and protection proprietary technology.
Unique way to detect debug equipment and process.
Quick and thoughtful after-sales service
Reliable performances lay the foundation of qualified service and quality.
Provide perfect system solution.
The timely and thoughtful Consulting Services.
Constantly improve the product performance according to user's opinion.
1.4 Technical specification
Item
Description
Input
Power
Supply
Input Voltage Three-phase 220V/380V/480V/660 AC
Frequency 50/60Hz
Adaptive Motor
Squirrel-cage three-phase asynchronous motor
Starting Times It is recommended not to exceed 20 times per hour.
Control Mode
(1) Operation panel control.
(2) Operation panel + external control.
(3) External control.
(4) External control + COM control.
(5) Operation panel + external + COM control.
(6) Operation panel + COM control.
(7) COM control.
(8) No start or stop operation.
Start Mode
(1) Current-limiting to start.
(2) Voltage ramp to start.
(3) Torque control + current-limiting to start.
(4) Torque control + voltage ramp to start.
(5) Current ramp to start.
(6) Voltage current-limiting double closed-loop start.
Stop Mode (1) Soft stop.
(2) Free stop.
Protective Function
(1)Open loop protection for external instantaneous stop terminals.
(2) Over-heat protection for soft starter.
(3) Protection for too long starting time.
(4) Input open phase protection.
(5) Output open phase protection.
(6) Unbalanced three-phase protection.
(7) starting over current protection.
(8) Running overload protection.
(9) Under voltage protection for power voltage.
(10) Overvoltage protection for power voltage.
(11) Protection for fault parameter setting.
(12) Load short circuit protection.
(13) Auto restart or incorrect wiring protection.
(14)Incorrect wiring protection of external control stop terminals.

EM-GS User's Manual 1. EM-GS Series Soft starter
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Item Description
Ambient
Place to be
used
Indoor location with good ventilation free from corrosive gas and conductive
dust.
Altitude Below 1000M. It have to rise the rate power when the altitude is more than
1000M.
Temperature -30 +55
o
C
Humidity
90%RH without dew condensation.
Vibration <0.5G
Structure
Protection
Class
IP20
Cooling
Pattern Natural wind cooling.

2. Nameplate Explanation and Inspection EM-GS User's Manual
4
2. Nameplate Explanation and Inspection
Please check up the products before using, if in some problems; please do not hesitate to contact us with any request
for additional information. Check-up the type of product whether it is the right one you order.
Nameplate explanation:
Diagram 2.1
Model explanation:
Diagram 2.2
Check any damage to the product because of the transport, such as the spare parts are apart from the main body
or the shell be damage etc.
Check others, including the user's manual.

EM-GS User's Manual 3. Usage Condition and Installation
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3. Usage Condition and Installation
It is strict rule for the users to use or install the soft starter according to the requirement; otherwise, it will be in bad
result.
3.1 The usage condition
Power Supply:City grid power, self-provided power, diesel oil dynamotor, 3-phase alternating current
220V/380V/480V/660V±15%, 50Hz or 60Hz. The power capacity of the soft start must meet the motor starting
requirement.
Matched Motor: Motor should be three phase squirrel asynchronous motor, and its power capacity must be
matched with soft starters.
Starting Frequency: The starting time is according to the loading equipments.
Cooling Mode: Naturally wind cooling.
Protective Grade: IP20
Environment Conditions: when altitude is less than 1000m, the temperature of the environment should be
between -25oC ~ 40 oC, relative humidity should be less than 90% RH, no vapor, no flammable, volatile,
corrosive gas. No electric dirt, indoor installation, ventilated, vibration is less 0.5G.
3.2 The installation requirement
The direction and distance of installation: In order to make sure that the soft starter be in good ventilation and
heat dissipation, please install the product in vertical direction, and be sure the space around the product is
enough. (See the following diagram 3.1)
If the soft starter is installed in a box, please note that the ventilation is very good, as well as the above notes.
(See the following diagram 3.1)
Diagram 3.1 Diagram 3.2 Diagram 3.3

3. Usage Condition and Installation EM-GS User's Manual
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3.3 The installation dimensions
The external shape and installation dimensions of 5.5KW ~ 75KW(Diagram 3.4).
Dimensional drawing Mounting holes schematic
Model Power Current External
Dimensions (mm)
Installation
Dimensions (mm)
N.W
220V 380V 480V (KW) (A) H W D A B d (K.G)
--- EM-GS3-5d5 EM-GS4-5d5 5.5 11 146 270 160 131 247 M6 <5
--- EM-GS3-7d5 EM-GS4-7d5 7.5 15 146 270 160 131 247 M6 <5
EM-GS2-5d5 EM-GS3-011 EM-GS4-011 11 23 146 270 160 131 247 M6 <5
EM-GS2-7d5 EM-GS3-015 EM-GS4-015 15 30 146 270 160 131 247 M6 <5
--- EM-GS3-018 EM-GS4-018 18.5 37 146 270 160 131 247 M6 <5
EM-GS2-011 EM-GS3-022 EM-GS4-022 22 43 146 270 160 131 247 M6 <5
EM-GS2-015 EM-GS3-030 EM-GS4-030 30 60 146 270 160 131 247 M6 <5
EM-GS2-018 EM-GS3-037 EM-GS4-037 37 75 146 270 160 131 247 M6 <5
EM-GS2-022 EM-GS3-045 EM-GS4-045 45 90 146 270 160 131 247 M6 <5
EM-GS2-030 EM-GS3-055 EM-GS4-055 55 110 146 270 160 131 247 M6 <5
EM-GS2-037 EM-GS3-075 EM-GS4-075 75 150 146 270 160 131 247 M6 <5
: The rated power of motor in the above form is the maximum rated value. Generally, the values of matched
motor power capacity should not be more than this value.

EM-GS User's Manual 3. Usage Condition and Installation
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The external shape and installation dimensions of 90KW ~ 600KW(Diagram 3.5).
Dimensional drawing Mounting holes schematic
Model Power Current External
Dimensions (mm)
Installation
Dimensions (mm) N.W
220V 380V 480V (KW) (A) H W D A B d (K.G)
EM-GS2-045 EM-GS3-090 EM-GS4-090 90 180 257 525 194 195 377 M8 <21
EM-GS2-055 EM-GS3-115 EM-GS4-115 115 230 257 525 194 195 377 M8 <21
--- EM-GS3-132 EM-GS4-132 132 264 257 525 194 195 377 M8 <21
EM-GS2-075 EM-GS3-160 EM-GS4-160 160 320 257 525 194 195 377 M8 <21
EM-GS2-090 EM-GS3-185 EM-GS4-185 185 370 257 525 194 195 377 M8 <21
EM-GS2-100 EM-GS3-200 EM-GS4-200 200 400 257 525 194 195 377 M8 <21
EM-GS2-132 EM-GS3-250 EM-GS4-250 250 500 290 560 245 260 465 M8 <25
EM-GS2-160 EM-GS3-280 EM-GS4-280 280 560 290 560 245 260 465 M8 <25
EM-GS2-185 EM-GS3-320 EM-GS4-320 320 640 290 560 245 260 465 M8 <25
EM-GS2-200
EM-GS3-400
EM-GS4-400
400
800
330
590
245
300
490
M8
<32
EM-GS2-220 EM-GS3-450 EM-GS4-450 450 900 330 590 245 300 490 M8 <32
EM-GS2-250 EM-GS3-500 EM-GS4-500 500 1000 450 740 300 400 575 M10 <40
EM-GS2-315 EM-GS3-600 EM-GS4-600 600 1200 450 740 300 400 575 M10 <40
3.4 Installation diagram
The EM-GS series soft starter has three types of connection as following:
Main circuit connection: It contains the wiring of 3-phase source input, the output to motor, and the pass -by
contactor connection.
External terminal connection: That is the wire comes from twelve external terminals which including control
signal and analogue output signal.
Communication connection:One standard RJ-45 network cable socket and one DB9 socket can be used to
connect computer or network.

3. Usage Condition and Installation EM-GS User's Manual
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Diagram 3.6

EM-GS User's Manual 4. Connection and External Terminal
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4. Connection and External Terminal
4.1 The external terminal
Please see the diagram diagram 4.1:
Diagram 4.1
Terminal ① ② are by-pass output, are used to control the by-pass contactor. They are normal open contacts and
are closed when finishing starting. The terminal contact capacity is AC 250V/5A.
Terminal ③ ④ are programmable relay output: The delay time is set by F4 code. The output command type is
set by FE code. They are normal open no-power terminals, being close when output valid. Please see the detailed
information in item 5.3. This terminal contact capacity is AC250V/5A.
Terminal ⑤ ⑥ are fault output , they will be closed when there are any fault matters happened to the soft starter
or electricity lost, while at normal case they are open. This terminal contact Capacity is AC250V/0.5A.
Terminal ⑦are instantaneous stop input, this terminal must be connected with terminal ⑩when the starter
works normally. But if these two terminals are open, the soft starter will stop, and at this time the starter is at the
state of fault protection. This terminal ⑦can be controlled by the normally closed output terminals of external
protection device, and it is useless when the FA code is set to 0(Primary protection).
Terminal ⑧ ⑨ ⑩ are startup or stop input .There are two ways of connections for your selection; those are
3-wire connection and 2-wire connection. Please see the diagram 4.2
Diagram 4.2
Terminal ⑪ ⑫ are DC 4 ~ 20mA analogue output ,they indicate the current value of motor at real-time working.
The 20mA is full-scale value and that is four times than rated current of nominal power of soft starter, while, we
can connect a 4 ~ 20mADC current meter to check. The max value of output load resistance is 300Ω.
Note: Please make sure that external terminals are in right connection; otherwise, the product may be damaged.
4.2 The communication interfaces
RJ-45 is the standard web line socket.
DB9 socket has RS485 and RS232 interfaces inside.
Please see the diagram 4.3

4. Connection and External Terminal EM-GS User's Manual
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Diagram 4.3
①is RS485+
⑥is RS485-
②is RS232 output.
③is RS232 input.
④is +5V output (limit-current is 50mA)
⑤is earthed GND.
⑦⑧⑨ are empty.
The user can choose the following software:
Computer collector distribution control communication software.
Device Net interface card and communication.
Device Net/Mod-bus/Profi-bus gateways.
Others.

EM-GS User's Manual 4. Connection and External Terminal
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Diagram 4.5

5. Control Panel and Operation EM-GS User's Manual
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5. Control Panel and Operation
The motor soft starter has five kinds of working state; Ready ,Run ,Error, Starting and Stopping, the showing
parameter is easy to understand and modify.
5.1 The operation of control panel
Diagram 5.1
Power on : Will show "READY", press RUN key can soft start motor。The state "READY" means soft starter is
ready for starting.
The keypad key specification:
RUN key and STOP&RSET key: In the soft starting process，keypad will show "A:***" displaying motor
current, at this moment, only STOP&RSET key is valid, and cannot enter menu of parameter setting and
helping. In the soft stopping process, the keypad will show "A:***", displaying motor current, at this moment,
only RUN key is valid，and cannot enter menu of parameter setting and helping, STOP&RSET key also has
function of fault reset.
SET key: under non-helping state, to press SET key enter setting menu, displaying initial voltage F0:30%, and
press SET key again, the colon behind F0 flashing, means the parameter behind colon is revisable, and press UP
key or DOWN key to change parameter. And then press YES key to save, the screen will show "GOOD" and
ring two, means parameter saved, and then quit. If you do not want to save new parameter, to press SET key, the
colon stop flashing and recover old paramater, and to press YES key to quit, also can directly go back to main
menu by pressing STOP&RSET key.
YES key: Under non-setting state, press YES key to enter helping menu ，displaying power voltage
"AC:XXXXV" , and press YES key to quit，and also can press STOP&RSET key quit. Under setting state, to
press YES key to save new parameter and quit setting state.
UP key and DOWN key: Under setting menu, when the colon no-flashing to press UP key or DOWN key can
change parameter code, when colon flashing: UP key or DOWN key to change this parameter value; pressing
UP key or DOWN key over 1 second, the parameter value will rapidly change. Under helping menu to press UP
key or DOWN key can change function code and helping information. When the soft starter is starting, and do
not enter setting and helping menu, the keypad will display motor current :"A:*** " ，at this tmei to press UP
key or DOWN key, can check apperant power "XXX.XKW" or over load ratio "XXX.X%"，when the overload

EM-GS User's Manual 5. Control Panel and Operation
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ratio over 100%, starter will stop and alarm over load, the keypad displaying "Error 8".
There will be a sound when pressing key is valid，no sound means this key is invalid under this state.
when external control way use 3 wiring, the terminal start button and stop button is same function as keypad
RUN key and STOP&RSET.
Control keypad adopts super-strong anti-interference design, allowing the extending cable distance longer than 3
meters.
5.2 Parameters set and explanation
The explanation for "Parameter-set" codes.
Code Explanation
for codes
The range of
value
Default
value Special explanation
F0 Initial voltage 30~70% 30%
This code can be used when the starting mode is set
as "Voltage ramp to start", and if is "Limit-current"
mode ,the value will be fixed as 40%
F1 Soft starting
time 2~60S 16S It is invalid in "Limit-Current" starting mode.
F2 Soft stopping
time 0~60S 0S If the code set as "0", the motor will free stop. One
soft starter for 2 motor, this code should set "0".
F3 Start-up time
delay 0~999S 0S Delay is with countdown mode; If set as "0", the
starter will start up the motor immediately.
F4* Programming
time-delay 0~999S 0S
This code is
used to set delay time of
③
&
④
terminals output.
Set "0" immediately close.
F5 Start-up current
limited value 50~500% 400%
It is used when the staring mode is "current limit",
and the value will be fixed as 400% when the
starting mode is "Voltage ramp to start"
F6*
Maximum
current of soft
starter
50~200% 100%
The "50 ~ 200%" is basic on the nominal current of
motor. If the set value of this code over 200%,the
soft starter will reverse to overheat protection
F7 Lower voltage
protection 40~90% 80%
When the working voltage is under the voltage
range(80%),the soft starter will be low voltage
protection
F8 Over voltage
protection 100~130% 120%
When the working voltage is over
the voltage
range(120%),the soft starter will be over voltage
protection
F9 Modes of
starting 0~6 1
0: Limit-current to start
1: Voltage ramp start
2: Torque control + limit current
3: Torque control + voltage ramp
4: Current ramp start
5: Double closed loop
6: Monitoring

5. Control Panel and Operation EM-GS User's Manual
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Code Explanation
for codes
The range of
value
Default
value Special explanation
FA Protection
Level 0~4 4
0. Primary protection
1. Light-load protection
2. Standard protection
3. Heavy-load protection
4. The superior level protection
FB Operation
control mode 0 ~6 1
0: Run by keypad
1: Run by keypad and terminal
2: Run by terminal
3: Run by terminal and RS485
4: Run by keypad, terminal and RS485
5: Run by keypad and RS485
6: Run by RS485
FC Parameter
revise 0~2 1
0: Parameter revise prohibit;
1: Partial parameter revise prohibit;
2: All parameter allow revising.
FD* Communication
address 0~63 0 Many soft starters connect with upper computer.
FE* Programming
output 0~19 6 Setting the detailed in Item 5.3
FF* Soft-stopping
limited current 20~100% 80% Setting the detailed in Item 7.3
FP Motor rated
current --- Rated value "The rated current of motor" is the same as the motor
nominal current.
FU Motor less load
protection 0~99 Prohibit Setting the detailed in Item 5.3
FL 3 phase balance
valid 0~1 1 0: Invalid
1: Valid
FM Current
coefficient 50~150% 100% Showing current slants high, to set coefficient down;
Lower conversely
FN Voltage
coefficient 50~150% 100% Showing voltage slants high, to set coefficient down;
lower conversely
Note:
F6 the "Max working current", is basic on the nominal current of motor.
If you have no any operation for 2 minutes after you come into the "set" state, soft starter will exit from "set"
state.
You can not set any parameters in the process of starting or stopping.
If you press the YES key to power on soft starter, all parameters will recover to default setting except FE code.
When FC=1, these parameters with "*" is prohibited to revise.

EM-GS User's Manual 5. Control Panel and Operation
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5.3 Parameters code function explanation
The parameter “Fb” is used to set the control ways of soft starter; as the following form:
Numerical value 0 1 2 3 4 5 6
Keypad 1 1 0 0 1 1 0
External terminal control 0 1 1 1 1 0 0
RS485 Communication 0 0 0 1 1 1 1
Note: In the above form,"1" is allowing,"0" is forbidding. For example, If you press keypad "RUN", and meet
"Error 14", please set "Fb=0". And then soft starter can be run by keypad.
If the "External Control" is allowing, you must contact a normally closed switch button between the terminal ⑦⑧
and terminal ⑩, otherwise the soft starter can’t start-up the motor and show "Error1/Error 16".
The parameter "FE" is use to setting the way of ③&④programmable relay output, As the following form:
Numerical Value of FE
The moment of programmable relay output
0(10) When sending the order of starting , the program output
1(11)
When beginning to start , the program output
2(12) When at the start of bypass operation, the program output
3(13)
When sending the order of stopping, the program output
4(14) When finishing the operation of stopping, the program output
If users need programmable relay output time delay, the time can be setting by parameter "F4".
When the "FE"is setting as 5~9(or 15~19), the terminal ③&④will display the state of programmable relay
output, As the following form:
The number setting by FE The state of programmable relay output
5(15)
Error state
6(16) Working state
7(17)
Ready state
8(18) Starting state
9(19)
By-pass operation state
The state of programmable relay output is used to show the working state of soft starter, and under this way, the
"F4" setting delay time is invalid;
The default setting of "FE"code is "7" showing the ready state of soft starter and at this state the motor can be
started up;
When the "FE"code is "5" outputting error state of motor, Terminal ③ ④ can output fault such as: (Err05,
Err06, Err07, Err08, Err12, and Err15). This will not affect the function of ⑤⑥ error output terminals.
When "FE">9, the programmable output will be “reverse phase output”, (Normal open will reverse to normal
close).
When "FC"=0, all parameters cannot be revised. And when "FC"=1, (F4; F6; Fd; FE; FF; FU) cannot be
revised. When "FC"=2, all parameters can be revised.
"FU"is motor less load protection, when "FU"﹤10,the motor less load protection is invalid. The "FU"
less load protection current range is 10%~90%. And delay time is 5~90 seconds. The ten bits*10% is
protection current percentage, the Bits*10 is delay time; the bits=0, the delay time is 5seconds.
For example: "FU"=42, the less load current is 40%, and delay time is 20 seconds.
5.4 Helping message and explanation
When the product is not starting or stopping ,or not at the ”set” state, you can press “YES” key and come into
helping menu ,then press the "Up" or "Down" key to choose the help message. Please press "YES" or
"STOP&RSET" key to return.

5. Control Panel and Operation EM-GS User's Manual
16
Helping message Form
Message displayed Explanation
AC: XXXXV
That is the 3-phase power voltage is AC 380V.
030A-380V That is the specification is AC 380V, 50Hz, 30A.
H1: Error 5
The fault message Err05 that happened at the last time.
: :
H9: Error 0
It says no fault happened.
VEr3.0 It says the software of the products is Ver3.0.
Lxxxx
Xxxxx is times of successful soft starting
T-run xxS "xx" is last soft starting time
Note: The message H1 ~ H9 displayed means 9 faults records that happened lately.
Not in state of soft starting and stopping, and not in setting state, to press YES key to enter helping menu, and
press UP or DOWN key to choose helping information.
Under state of helping, to press YES key or stop key to quit helping menu.
5.5 The complete solution of default setting and user debugging
The system integrator or final user do not have proper motor for testing, but you can use star wiring by 3 piece 100W
or 200W electric lamps or small KW motor for testing. At this moment, because the output current is very small, so
the soft starter will alarm Error05 "output phase lost" and stop, so user needs to change parameter FA to 0 (Primary
protection) , and soft starter will not alarm, and after starting, the 3 lamps will be light and gradually brighter, lastly
bypass contacted and lamps be full bright.
Diagram 5.2

EM-GS User's Manual 6. Protection Functions and Directions
17
6. Protection Functions and Directions
We make our soft starters have all kinds of protection functions to protect the safety of soft starter and the motor.
Please choose the correct protection Class and parameters according to your application conditions!
Over-heat protection: When soft starter inside temperature is up to 80oC ± 5oC, the starter will turn to over-heat
protection, when be down to 55 oC, this protection removes.
Input less-phase protection: The delayed time < 3s
Output less-phase protection: The delayed time < 3s
Three-phase unbalance protection: The delayed time < 3s, when the difference of current among three phrases is
more than 50% ± 10%, the protection be valid.
Starting over-current protection time: The diagram of over current 5 times of F6 set rated working current is just
as diagram 6.1.
Working over-load protection time: The starter will be in inverse time thermal protection on. Base of the Max
working current of motor (Set by F6), (The diagram 6.1 show)
Low voltage protection delay time: When power voltage is less than 40%, the protection delayed time < 0.5s;
When power voltage is less than 80%, the protection delayed time < 3S.
Over-voltage protection delay time: When power voltage is more than 140%, the protection delayed time < 0.5S;
When power voltage is more than 120%, the protection delayed time < 3S.
Loads short-circuit protection delay time: The protection delayed time < 0.1S.
Motor less load protection delay time: The protection range (10% ~ 90%) is set by FU; the delayed time is 5~90
seconds. When FU < 10, the protection is invalid.
6.1 Protection classes and explanation
According different usage conditions, EM-GS series Soft Starter has five protection classes, as following:
0. Primary protection
1. Light-load protection
2. Standard protection
3. Heavy-load protection
4. The superior protection
Primary protection includes the protection functions of overheat, short circuit, and input default phase protection
and prohibit external instantaneous stop terminal. Which is proper urgently startup conditions, such as fire pump.
The protections of light load, standard and heavy-load have the overall protection function of soft starter. The
difference among them is protection level of overload and over current. See the diagram of 6.1.
Under the superior protection, the soft starter has a higher protection level.
The protection classes and the time of heat protection as (diagram 6.1)