MC800 series motor protection controller
The MC800 series motor protector is an intelligent, networked, and digital low-voltage motor protection controller developed in accordance with IEC international standards; It has changed the traditional mode of motor protection and control, replacing conventional electrical components such as thermal relays, current transformers, intermediate relays, and transmitters. While achieving integrated protection, measurement, and control, it integrates advanced network communication technology and distributed intelligent technology into the MCC control center; This provides scientific and effective on-site protection and measurement functions for industrial production process control.
MC800motor protectorSuitable for AC asynchronous motors with an AC frequency of 50Hz, rated operating voltage of AC380V/660V, and rated current below 800A. Realize comprehensive protection for the above-mentioned types of motors, and complete functions such as parameter measurement, operation control, record management, and remote communication for motor operation.
Technical indicators
General description
Working environment Working temperature: -30 ℃~+70 ℃ Environmental humidity:<90%
Working power supply AC220V
Main circuit 380/660ACV 10Hz~55 Hz
Accuracy: The accuracy of three-phase current is better than 1.0% FS
The accuracy of 4-20mA current output is better than 0.3% FS
Seismic resistance 10g/5ms
Installation method: Standard 35mm rail and direct screw fixation
Specifications: Built in sensors for current: 1A, 6.3A, 2 * *, 63A, 100A
External sensor or standard current transformer: 200A, 400A
Application scope: Three phase asynchronous motors, frequency conversion range, increased safety motors, feeders
Dimensions: 115 × 95 × 110mm (length × width × height)
Protection function
Locking protection √
Short circuit protection √
Grounding protection √
Leakage protection √
Start timeout protection √
Overload protection √
Unbalance protection √
Underload protection √
Overvoltage protection √
Undervoltage protection √
Temperature (PTC) protection (optional)
Analog input protection (optional)
Shake power self starting (optional)
Control kinetic energy
Direct Start (Soft Start) √
Forward and reverse start √
Star Triangle Start √
Self coupling voltage reduction startup √
State input
Programmable switch input 24VDC internal power supply for the product, 6-way photoelectric isolation (optional)
Control quantity output
**/250VAC * Large switch voltage value 380VAC
Relay output has a mechanical lifespan of 10 times
Basic configuration: 5 channels
analog output
Programmable (factory default A-phase current)
DC4-20mA output 24VDC internal power supply
(Optional)
Network communication function
Supports PROFIBUS-DP protocol (optional)
Standard RS-485 interface supports MODBUS-RTU protocol (optional)
Custom protocol (optional)
Operation display unit
This unit is connected to the basic unit through a shielded Ethernet cable (RJ45 interface) and displays
Motor operation data, setting motor protection parameters, and controlling the start and stop of the motor.
Display mode: gray background with black text, night crystal display (LCD), backlit display.

TECHNICAL INDEX
show contents
A. B, C three-phase current cycle display
Leakage current display during normal motor operation (when this option is available)
FREQUENCY DISPLAY
Voltage display
Fault type code and fault data in case of motor failure
Tap the button lightly
Function keys are used for switching between functions
Shift key is used to move the cursor
Increase the setting number when adding key settings
Start button to start the motor locally
Stop/Reset button to locally stop the motor/set reset/fault reset
pilot lamp
Name Color Status Description
The running light is always green and the motor is running
The motor does not light up and has not started
Set the red constant light device to the set state
The fault light is always red and the fault trips
Flashing fault alarm
Ready light green constant on device is normal
Flashing/non illuminating device self diagnosis failure
Dimensions: 80 × 60 × 30 mm (length × width × height)