Emheater EM-GU Series Manuale utente

Preface

Thanks for your using EMHEATER EM-GU series 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 forbidden 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.

PRODUCT UNPACKING 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.

⚫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.

This user manual content may be changed due to technical reasons or modified. We reserve the updating right.

Version 1.0.0

 
Table of Contents 
Products Information............................................................................................................................................... 1 
1 Motor Soft Starter ............................................................................................................................................. 1 
2 Technical Features............................................................................................................................................. 1 
3 Technical Specification..................................................................................................................................... 1 
Product Description and Installation........................................................................................................................ 2 
1 Model Explanation............................................................................................................................................ 2 
2 Products Model and Installation Dimension..................................................................................................... 2 
3 Installation Environment................................................................................................................................... 3 
4 Installation requirement .................................................................................................................................... 3 
5 Peripheral Devices Connection Diagram.......................................................................................................... 4 
6 Description of control circuit terminals............................................................................................................. 5 
Operation and Display............................................................................................................................................. 6 
1 Keypad and Operation....................................................................................................................................... 6 
2 Description of Function Parameters.................................................................................................................. 8 
3 Fault Diagnosis and Solution .......................................................................................................................... 14 
Test Run and Application...................................................................................................................................... 16 
1 Power on to Test Running............................................................................................................................... 16 
2 SpecialApplication......................................................................................................................................... 16 
Online Soft Starter Cabinet.................................................................................................................................... 17 
1 Product Function............................................................................................................................................. 17 
2 Products Structure and Installation ................................................................................................................. 17 
3 Operation and Notice ...................................................................................................................................... 18 
Modbus Communication Protocol......................................................................................................................... 20 
1 About Modbus RTU protocol.......................................................................................................................... 20 
2 Bus Structure................................................................................................................................................... 20 
3 Abnormal Feedback ........................................................................................................................................ 21 
Appendix I Function Code Table............................................................................................................................... 22 

EM-GU User’s Manual 1. Products Information

1. Products Information

1.1 Motor Soft Starter

EM-GU motor soft starter, the use of intelligent digital control; It used to 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. 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 Technical Features

●A variety of start mode can be selected to allow the motor soft starter to start different types of motor loads;

●Multiple dynamic fault memory functions for easy fault finding;

●Multiple protection functions, such as overcurrent, overheat, phase loss and thermal overload;

●Humanized design, detachable operation panel, built-in Chinese and English display interface for flexible

selection.

●Powerful software functions, rich hardware configuration, easily meet the needs of various industries.

●Compact design, easy to install and use.

1.3 Technical Specification

Input&Output

●Input voltage: AC 220-380V±15%

●Input frequency: 50/60Hz

●Output voltage: AC 220/380V±15%

Technical function

●Start mode: voltage ramp start, current limit start, torque start

●Stop mode: Soft stop, Free stop

●Starting time: 1~120s

●Stopping time: 0~60s

●Starting current limiting multiplier: 0.5~6Ie

●Starting voltage: 0.3~0.8Ue

●Pump functions

External terminal

●Remote control input

●Relay output

●Analog output

●RS485 communication output

Ambient

●Indoor location with good ventilation free from corrosive gas and conductive

dust.

●Altitude: Below 2000M. It has to rise the rate power when the altitude is more

than 2000M

●Temperature: -10 +40 oC

●Humidity: 90%RH without dew condensation.

●Vibration: <0.5G

●Cooling mode: Fans cooling.

2. Product Description and Installation EM-GU User’s Manual

2. Product Description and Installation

2.1 Model Explanation

Company code

GU series online soft starter

Rated voltage:

2: Three phase 220V

3: Three phase 380V

I: Cabinet

Matched motor: 045: 75kW; 160: 160kW

Diagram 2.1 Products model explanation

2.2 Products Model and Installation Dimension

Diagram 2.2 EM-GU installation dimension and mounting holes

Model

Rated

Power

Rated

Current

External Dimensions

(mm)

Installation Dimensions

(mm)

(KW)

(A)

EM-GU3-011

240

105

169

211

EM-GU3-015

EM-GU3-018

18.5

EM-GU3-022

EM-GU3-030

EM-GU3-037

EM-GU3-045

283

135

185

244

105

EM-GU3-055

110

EM-GU3-075

150

EM-GU3-090

180

371

190

245

322

150

EM-GU3-115

115

230

EM-GU3-132

132

260

393

225

226

340

170

EM-GU3-160

160

320

EM-GU User’s Manual 2. Product Description and Installation

Model

Rated

Power

Rated

Current

External Dimensions

(mm)

Installation Dimensions

(mm)

(KW)

(A)

EM-GU3-200

200

400

EM-GU3-250

250

500

586

483

296

498

340

EM-GU3-280

280

560

EM-GU3-315

315

630

Note: 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.

2.3 Installation Environment

●Power Supply: City grid power, self-provided power, diesel oil dynamotor, 3-phase alternating current

380V±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: Not more than 4/hour when the motor is started with full load. The starting time is

according to the loading equipment.

●Cooling Mode: Fan cooling.

●Protective Grade: IP20

●Environment Conditions: when altitude is less than 2000m, the temperature of the environment should be

between -10oC ~ 40oC, relative humidity should be less than 95% RH, no vapor, no flammable, volatile,

corrosive gas. No electric dirt, indoor installation, ventilated, vibration is less 0.5G.

2.4 Installation requirement

he 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. 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 2.3)

Diagram 2.3 Ventilating duct installation dimension diagram of soft starter

2. Product Description and Installation EM-GU User’s Manual

2.5 Peripheral Devices Connection Diagram

EM-GU series soft starters can be connected to the motor by line mode connection or delta mode

connection.

Line Mode connection:

Diagram 2.4 EM-GU device connection diagram(Line mode)

Delta Mode connection:

Diagram 2.5 EM-GU delta mode connection diagram

EM-GU User’s Manual 2. Product Description and Installation

2.6 Description of control circuit terminals

Control terminal connection: That is the wire comes from 11 external terminals which including input and

output control signal and analogue output or RS485 communication signal.

Diagram 2.6 Control circuit terminal

Type

Terminal

Symbol

Terminal

Name

Description

Communication

485+

Communication

terminal

Input and output signal terminals for MODBUS-RTU protocol

communication.

485-

Digital input

IN1-24V

Run

When F49=0, there are two ways of connections for your selection;

those are 2-wire connection and 3-wire connection, as below:

IN2-24V

Stop/Reset

IN3-24V

Faul

Analog output

AO-GND

4-20mA output

The output upper and lower current limits are set by parameter F15,

default 2 times.

Relay output

TA-TB

NC terminal

Programmable relay output, the output method is set by the F13

parameter.

TA-TC

NO terminal

Note：Please make sure that external terminals are in right connection; otherwise, the product may be

damaged.

3. Operation and Display EM-GU User’s Manual

3. Operation and Display

The motor soft starter has five kinds of working state: Ready, starting, Running, stopping and Fault, the showing

parameter is easy to understand and modify.

3.1 Keypad and Operation

Diagram 3.1 Operation keypad

No.

Name

Function

LCD display area

LCD shows the parameter, monitoring data and Error codes.

Status indicator

area

Ready

On indicates that the soft starter is ready.

Run

On indicates that the motor is starting, running, soft stop state

Trip

On indicates that the soft starter is in a fault state, flashing indicates

that the soft starter is in warning state.

Local

On indicates that the soft starter is in keypad control mode.

Operation key area

Exit/Cancel key: Exit menu or cancel modification of parameters.

Shift key: The fault log can be cycled through while on the main

display screen, and select the digit to be modified when modifying

parameters.

UP key: Increase data or parameter code.

DOWN key: Decrease data or parameter code.

Menu/Enter key: Enter menu and confirm the parameter setting.

R/L key: For switching between keypad control and terminal control

Running key: Start the soft starter in the keypad control mode.

Stop/Reset key: When in operation, press this key for stop operation;

when in fault alarm, press this key for fault reset operation.

Start and stop operation:

The soft starter keypad screen shows “READY”, and press running key to start the motor. In the In the

process of starting, the screen shows starting current “xxxA”. When the starting is completed, can be press

UP key to check three phase current information.And press Stop/Reset key to stop the motor.

EM-GU User’s Manual 3. Operation and Display

Prompt:

●Only when the "READY" is displayed, the motor can be started by pressing the running key.

●When the external control terminal is wired in 3-wire mode, the external control start and stop buttons are

functionally equivalent to the running key and stop/reset key on the keypad respectively.

●During the start and stop process, you can not enter the Set Menu or Help Menu.。

Parameter modification operation:

In the “Ready” state, press MENU/ENTER key can enter the main menu.And the parameter can be

selected by UP key or DOWN key, and press MENU/ENTER key again to enter the

parameter that needs to be modified, select the option or modify the value by UP key or DOWN key,

and then press MENU/ENTER key again means that the new data has been saved and return to the menu.

If you do not want to save, please press Exit/Cancel key to return to the menu.

Prompt:

●Use the shift keys to quickly switch to the parameter to be modified.

●The keypad is designed to be super anti-interference, allowing an outward lead distance of more than 3m.

Fault enquiry operations:

The soft starter can record 12 fault logs for easy viewing, in the “Ready” state, press shift key to enter the

fault record menu. Check the fault logs by UP key or DOWN key. If you want to exit fault record

menu, please press shift key to exit the menu.

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