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  • Guangxi Senge Automation Technology Co., Ltd
  • Website:http://www.gxsenge.net/
  • Telephone:0771-3925018
  • Email:gxsenge163.com
  • Address:No. 1005, Building 7, Gonggu, Anji Wall Street, No. 189 Development Avenue, Xixiangtang District, Nanning City

CMC-MX series built-in bypass type motor soft starter

Detailed introduction

7 CMC-MX系列内置旁路型电机软起动器

Introduction to CMC-MX built-in bypass soft starter:

CMC-MX built-in bypass motor soft starter is a voltage regulating and current limiting intelligent asynchronous motor soft starter based on trigger closed-loop algorithm. Its superior power electronic circuit detection and advanced closed-loop control algorithm make the starting and protection functions more perfect. The built-in bypass contactor contact adopts a magnetic retention type contactor, which is different from other external bypass AC contactors that operate with electricity for a long time. This product is noise free, electromagnetic pollution-free, spark free, and environmentally friendly.


CMC-MX built-in bypass soft starter function:

It can start/stop the motor smoothly without any step, avoiding mechanical and electrical impacts caused by traditional starting methods such as direct starting, star/delta starting, and self coupling voltage reduction starting. It can also effectively reduce the starting current and distribution capacity, avoiding investment in capacity expansion. At the same time, the CMC-MX soft starter integrates current transformers and contactors internally, so users do not need to connect them externally.


CMC-MX built-in bypass soft starter model description:

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CMC-MX built-in bypass soft starter features:


1. Multiple starting methods

Users can choose between current limiting start and voltage ramp start, and can apply programmable jump start and starting current limit in each mode. Satisfy on-site requirements and achieve good start-up results.

2. Reliability

The microprocessor digitizes the signals in the control system, avoiding excessive adjustments to analog circuits in the past, thus achieving good accuracy and execution speed.

3. Powerful anti-interference capability

All external control signals are optoelectronic isolated and have different levels of noise resistance, suitable for use in special industrial environments.

4. Easy adjustment method

The control system has a wide range of applications, simple and intuitive adjustment methods, and can match various different control objects through various functional options.

5. Optimized structure

The unique compact internal structure design is particularly convenient for users to integrate into existing systems, saving them the cost of current transformers and bypass contactors.

6. Power frequency adaptation

Power frequency 50/60Hz adaptive function, convenient for users to use.

7. Analog output

4-20mA current output function, convenient for users to use.

8. MODBUS-RTU communication

During network communication, 32 devices can be connected. Users can achieve automatic communication by setting the baud rate and communication address. The communication address setting range is 1-32, and the factory value is 1. The communication baud rate setting range is: 0, 2400; 1. 4800; 2. 9600; 3. 19200; The factory value is 2 (9600).

9. Complete protection functions

Multiple motor protection functions (such as overcurrent, input/output phase loss, thyristor short circuit, overheat protection, leakage detection, electronic thermal overload, internal contactor failure, phase current imbalance, etc.) ensure that the motor and soft starter are not damaged in the event of faults or misoperation.

10. Easy to maintain

A monitoring signal coding system composed of 4-digit digital displays, which monitors the working status of system equipment 24 hours a day and provides fast fault diagnosis.


CMC-MX built-in bypass soft starter usage conditions:

​Control power supply

AC110V--220V±15%,50/60Hz

Three-phase power supply

Standard wiring AC380V

Internal triangular wiring AC380V ± 30%

Nominal current

15A-560A, with a total of 18 rated values

Applicable motor

General squirrel cage AC asynchronous motor

Starting ramp mode

Current limiting soft start and voltage ramp start

Parking methods

Free parking and soft parking

Logic input

Impedance 1.8K Ω, power supply+15V

Start frequency

Can be started frequently or infrequently, it is recommended to start no more than 10 times per hour

Protection function

Phase failure, overcurrent, short circuit, SCR protection, overheating, under load, phase current imbalance, wiring, internal faults, etc

Protection level

IP00、IP20

Cooling method

Natural cooling or forced air cooling

Installation method

Wall mounted

Environment condition

If the sea level exceeds 2000 meters, the capacity should be correspondingly reduced for use

The ambient temperature is between -25-+45 ° C

The corresponding humidity shall not exceed 95% (20 ° C ± 5 ° C)

No flammable, explosive, corrosive gases, no conductive dust, indoor installation, good ventilation, vibration less than 0.5G

Basic wiring diagram of CMC-MX built-in bypass soft starter:

The terminals 1L1, 3L2, and 5L3 of the soft starter are connected to the three-phase power supply, and 2T1, 4T2, and 6T3 are connected to the motor. No external bypass contactor is required, and the soft starter can select whether to detect phase sequence through parameter settings.

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Triangle Inner Connection Diagram

If the user uses a triangular internal connection, they must strictly follow the following diagram for connection, otherwise it may cause damage to the motor or soft starter. Before starting the machine, the motor wiring will be checked. If there is a wiring error, the soft start will report a wiring error fault.

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Appendix 1: Selection of Standard Wiring Specifications and Accessories for Soft Start (Taking 380V as an Example):

Adapted motor (KW)

Soft starter model

Rated current

(A)

Primary line specifications

(Copper wire)

7.5

CMC-MX008/3

18

6 mm2

11

CMC-MX011/3

24

10 mm2

15

CMC-MX015/3

30

16 mm2

18.5

CMC-MX018/3

39

16 mm2

22

CMC-MX022/3

45

16 mm2

30

CMC-MX030/3

60

25 mm2

37

CMC-MX037/3

76

25 mm2

45

CMC-MX045/3

90

35 mm2

55

CMC-MX055/3

110

50 mm2

75

CMC-MX075/3

150

70 mm2

90

CMC-MX090/3

180

20×3Copper bar

110

CMC-MX110/3

218

20×3Copper bar

132

CMC-MX132/3

260

25×3Copper bar

160

CMC-MX160/3

320

30×3Copper bar

185

CMC-MX185/3

370

30×4Copper bar

220

CMC-MX220/3

440

40×5Copper bar

250

CMC-MX250/3

500

40×5Copper bar


Note: Standard wiring refers to the delta or star connection of the motor winding, with the thyristor connected between the power supply and the motor.

Appendix: Specification and Model Selection of Soft Start Internal Triangle Wiring and Accessories (Taking 380V as an Example)


Adapted motor (KW)

Soft starter model

Rated current

(A)

Primary line specifications

(铜线)

7.5

CMC-MX008/3

18

6 mm2

11

15

CMC-MX011/3

24

10 mm2

18.5

22

CMC-MX015/3

30

16 mm2

30

CMC-MX022/3

45

16 mm2

37

CMC-MX030/3

60

25 mm2

45

55

CMC-MX037/3

76

25 mm2

75

CMC-MX055/3

110

50 mm2

90

CMC-MX075/3

150

70 mm2

110

132

CMC-MX090/3

180

20×3Copper bar

160

CMC-MX110/3

218

20×3Copper bar

185

CMC-MX132/3

260

25×3Copper bar

220

CMC-MX160/3

440

30×3Copper bar

250

CMC-MX185/3

500

30×4Copper bar

280

CMC-MX220/3

630

40×5Copper bar

315

Note: Internal delta connection refers to the series connection between the motor winding delta thyristor and the winding. The main advantage of inner triangle control is that soft starters can be selected for derating. In the inner triangle connection method, the current flowing through the soft starter and motor is 1/√ 3 of the line current. The above table uses a margin selection soft starter, selected according to the line current/1.5 times the rated current. During the selection process, users can further reduce the rating and select a soft starter according to the actual situation.

Ordering Notice

When placing an order, users should inform the supplier of the product model, specifications, load conditions, and usage conditions in order to select the product correctly.

The standard configuration of the soft starter includes a built-in current transformer and a built-in contactor, and users do not need external current transformers and bypass contactors.

The attachments in the above table are for reference only.


Appendix 2: Appearance and Opening Dimensions of Soft Starters (Unit: mm, Taking 380V as an Example):

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CMC-MX series built-in bypass soft starter selection:


Number

Rated current(A)

380V

Size(mm)

Adaptive power(KW)

173×275×192 (width x height x thickness)

1

18

7.5

2

24

11

3

30

15

4

39

18.5

5

45

22

6

60

30

7

76

37

8

90

45

9

110

55

10

150

75

285×450×305 (width x height x thickness)

11

180

90

12

218

110

13

260

132

14

320

160

15

370

185

16

440

220

320×523×305 (width x height x thickness)

17

500

250

For more information on the installation direction, installation space, circuit installation, circuit connection, terminal instructions, display and operation instructions, control mode, parameter items and instructions, fault detection and troubleshooting, communication control, daily maintenance, and selection of soft starters for CMC-MX built-in bypass soft starters, you can click directly


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