China CMC-MX Soft Starter with Internal Bypass Contactor for 380V Motors - Suppliers & Factory Direct
Features
Users can select current limit start, voltage ramp start, and can apply programmable kick start and start current limit in each mode. Meet the needs of the site and achieve a good starting effect.
The high-performance microprocessor digitizes the signals in the control system, avoiding the excessive adjustment of the analog circuits in the past, thereby obtaining accuracy and execution speed.
All external control signals are optically isolated, and different anti-noise levels are set to adapt to use in special industrial environments.
The control system has a wide range of applications, the mode adjustment is simple and intuitive, and various functional options can be used to match various control objects.
The unique compact internal structure design is particularly convenient for users to integrate into the existing system, saving the cost of current transformers and bypass contactors for users.
The power frequency 50/60Hz is set by parameters, which is convenient for users to use.
4-20mA current output function, user-friendly.
During network communication, 32 devices can be connected. Users can achieve the purpose of automatic communication by setting the baud rate and communication address. The communication address setting range is 1-32, and the factory default value is 1. The communication baud rate setting range is: 0, 2400; 1, 4800; 2, 9600; 3, 19200; the factory value is 2 (9600).
A variety of motor protection functions (such as overcurrent, input/output phase loss, thyristor short circuit, overheat protection, leakage detection, electronic thermal overload, internal contactor fault, phase current imbalance, etc.) Not damaged during operation.
The monitoring signal coding system composed of 4-digit digital display monitors the working conditions of the system equipment 24 hours a day, and provides fast fault diagnosis at the same time.
Basic Parameters
| Applicable motor type | Ordinary squirrel cage AC asynchronous motor |
| Rated control supply voltage | AC110V to AC220V+15% |
| Supply frequency | 50/60Hz |
| Rated operation voltage | Standard wiring AC380V Internal delta wiring AC380V±30% |
| Nominal current | 18A~560A, 18 rated values in total |
| Applicable motor | Ordinary squirrel cage AC asynchronous motor |
| Start mode | Current-limited soft-start, Voltage ramp start. |
| Stop mode | Free stop, Soft stop |
| Logical input | Impedance 1.8 KΩ, power supply +15V |
| Start frequency | Frequent or infrequent startup can be done, it is recommended that the number of startups per hour does not exceed 10 times |
| Protective function | Phase failure, overcurrent, short circuit, SCR protection, overheating, underload, phase current imbalance, wiring, internal fault, etc. |
| IP degree of protection | IP00 |
| Cooling system | Natural cooling or forced air cooling |
| Installation type | Wall mounted-vertical installation |
| Installation Environment | When sea altitude is above 2,000m, soft starter should be derated for use. Ambient temperature: -25°C to +45°C Relative humidity: less than 95% (20°C±5°C) Free of flammable, explosive and corrosive gas or conductive dust. Indoor installation, good ventilation, vibration less than 0.5G |
Model Specifications
| Model No. | Rated Current (A) | Applicable motor power (kW) | Size & Net weight |
|---|---|---|---|
| CMC-008/3-MX | 18 | 7.5 | 173*275*192mm, 5.6kg |
| CMC-011/3-MX | 24 | 11 | |
| CMC-015/3-MX | 30 | 15 | |
| CMC-018/3-MX | 39 | 18.5 | |
| CMC-022/3-MX | 45 | 22 | |
| CMC-030/3-MX | 60 | 30 | |
| CMC-037/3-MX | 76 | 37 | |
| CMC-045/3-MX | 90 | 45 | |
| CMC-055/3-MX | 110 | 55 | |
| CMC-075/3-MX | 150 | 75 | 285*450*305mm, 25.1kg |
| CMC-090/3-MX | 180 | 90 | |
| CMC-110/3-MX | 218 | 110 | |
| CMC-132/3-MX | 260 | 132 | |
| CMC-160/3-MX | 320 | 160 | |
| CMC-185/3-MX | 370 | 185 | 320*523*330mm, 34.5kg |
| CMC-220/3-MX | 440 | 220 | |
| CMC-250/3-MX | 500 | 250 | |
| CMC-280/3-MX | 560 | 280 |
Dimensions
| Power range | Size (mm) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| G | H | I | K | L | M | E | D | A/B/C | |
| 8 ~ 55 kW | 173 | 275 | 192 | 133 | 250 | 7 | 90 | 86 | 50 |
| 75 ~ 160 kW | 285 | 450 | 305 | 230 | 390 | 9 | 170 | 158 | 50 |
| 185 ~ 280 kW | 320 | 523 | 330 | 270 | 415 | 9 | 195 | 158 | 50 |
Basic Settings of Different Applications
| Load type | Initial voltage (%) | Start ramp time (s) | Stop ramp time (s) | Current limit ILIM |
|---|---|---|---|---|
| Foreship propeller | 25 | 10 | 0 | 2.5 |
| Centrifugal fan | 25 | 20 | 0 | 3.5 |
| Centrifugal pump | 25 | 6 | 6 | 3 |
| Piston compressor | 25 | 15 | 0 | 3 |
| Hoisting machinery | 30 | 15 | 6 | 3.5 |
| Mixer | 40 | 15 | 0 | 3.5 |
| Crusher | 30 | 15 | 6 | 3.5 |
| Screw compressor | 20 | 15 | 0 | 3.5 |
| Spiral conveyor belt | 25 | 10 | 6 | 3.5 |
| No-load motor | 25 | 10 | 0 | 2.5 |
| Conveyor belt | 25 | 15 | 10 | 3.5 |
| Heat pump | 25 | 15 | 6 | 3 |
| Escalator | 25 | 10 | 0 | 3 |
| Air pump | 25 | 10 | 0 | 2.5 |
Frequently Asked Questions (FAQ)
This soft starter supports current-limited soft-start and voltage ramp start modes. Users can also apply programmable kick start and start current limit in each mode to meet specific site requirements.
It features comprehensive motor protection functions, including phase failure, overcurrent, thyristor short circuit, overheating, underload, phase current imbalance, electronic thermal overload, and internal contactor fault protection.
Yes, it supports MODBUS-RTU communication. You can connect up to 32 devices in a network and set the communication address from 1 to 32 and choose baud rates ranging from 2400 to 19200 bps.
It should be wall-mounted vertically indoors in a well-ventilated area. The ambient temperature must be between -25°C and +45°C, relative humidity below 95%, and vibration less than 0.5G. Additionally, it must be free of flammable, explosive, or corrosive gases.
For installations where the sea altitude is above 2,000 meters, the soft starter must be derated for safe and proper operation.
While the system is capable of handling frequent or infrequent startups, it is recommended that the number of startups does not exceed 10 times per hour.