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China CMC-MX Soft Starter with Internal Bypass Contactor, 380V - Reliable Suppliers & Factory Solutions
Features
● Various starting methods
Users can select current limit start, voltage ramp start, and can apply programmable kick start and start current limit in each mode.
● High reliability
The high-performance microprocessor digitizes signals, ensuring accuracy and execution speed by avoiding analog circuit adjustments.
● Strong anti-interference
All external control signals are optically isolated with different anti-noise levels for harsh industrial environments.
● Simple adjustment method
Intuitive mode adjustment with various functional options to match different control objects.
● Optimized structure
Compact internal design facilitates integration and saves costs on current transformers and bypass contactors.
● MODBUS-RTU communication
Supports up to 32 devices with adjustable baud rates (2400-19200) and communication addresses (1-32).
● Perfect protection function
Includes overcurrent, phase loss, thyristor short circuit, overheat, leakage detection, and phase imbalance protection.
● Easy maintenance
4-digit digital display monitoring system provides 24-hour working condition tracking and fast fault diagnosis.
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 |
| Start mode | Current-limited soft-start, Voltage ramp start. |
| Stop mode | Free stop, Soft stop |
| Start frequency | Recommended not to exceed 10 times per hour |
| Protective function | Phase failure, overcurrent, short circuit, SCR protection, overheating, underload, etc. |
| Installation Environment | Temp: -25°C to +45°C; Humidity: |
Model Specifications
| Model No. | Rated Current (A) | Motor Power (kW) | Size & Net Weight |
|---|---|---|---|
| CMC-008/3-MX to CMC-055/3-MX | 18 to 110 | 7.5 to 55 | 173*275*192mm, 5.6kg |
| CMC-075/3-MX to CMC-160/3-MX | 150 to 320 | 75 to 160 | 285*450*305mm, 25.1kg |
| CMC-185/3-MX to CMC-280/3-MX | 370 to 560 | 185 to 280 | 320*523*330mm, 34.5kg |
Dimensions
| Power Range | G | H | I | K | L | M | E | D |
|---|---|---|---|---|---|---|---|---|
| 8 ~ 55 kW | 173 | 275 | 192 | 133 | 250 | 7 | 90 | 86 |
| 75 ~ 160 kW | 285 | 450 | 305 | 230 | 390 | 9 | 170 | 158 |
| 185 ~ 280 kW | 320 | 523 | 330 | 270 | 415 | 9 | 195 | 158 |
55kW and below
75kW ~ 160kW
185kW ~ 280kW
Basic Settings of Different Applications
(Settings for reference only)
| Load Type | Initial Voltage (%) | Start Ramp (s) | Stop Ramp (s) | Current Limit ILIM |
|---|---|---|---|---|
| Centrifugal Fan | 25 | 20 | 0 | 3.5 |
| Centrifugal Pump | 25 | 6 | 6 | 3 |
| Hoisting Machinery | 30 | 15 | 6 | 3.5 |
| Crusher | 30 | 15 | 6 | 3.5 |
| Conveyor Belt | 25 | 15 | 10 | 3.5 |
Frequently Asked Questions
Q1: What are the primary starting modes supported by this soft starter?
It supports Current-limited soft-start and Voltage ramp start. Users can also apply programmable kick start in each mode to meet specific site needs.
Q2: What types of motor protection does the system provide?
The system offers comprehensive protection including phase failure, overcurrent, thyristor short circuit, overheating, leakage detection, and phase current imbalance.
Q3: Can this soft starter be integrated into a networked control system?
Yes, it supports MODBUS-RTU communication, allowing up to 32 devices to be connected with adjustable baud rates ranging from 2400 to 19200.
Q4: What is the recommended maximum number of starts per hour?
While both frequent and infrequent startups are possible, it is recommended that the number of startups does not exceed 10 times per hour for optimal longevity.
Q5: Is it suitable for high-altitude industrial environments?
Yes, but if the sea altitude is above 2,000 meters, the soft starter should be derated for use. It operates in temperatures between -25°C and +45°C.