PMAC811 Motor Protection and Control
PMAC811 intelligent motor protection controller

DIN Rail-mounted Motor Protection and Control Device PMAC811

PMAC811 Motor Protection and Control is a new generation of enhanced high-performance motor protection devices that integrates motor protection, measurement, information management, communication, and control functions.

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Feature of PMAC811 Motor Protection and Control

  • Integrated motor protection, control, measurement, metering, management, and communication among PMAC811 series intelligent motor protection controller
  •  Widely used in petroleum, chemical, electricity, metallurgy, steel, paper, textile, cement, municipal industrial etc
  • Suitable for low voltage motor applications with AC380 / 690V rated voltage, 50 / 60Hz
  • Replace discrete components in the motor control center (MCC), greatly simplify the motor control loop, improve reliability and stability, and reduce the comprehensive cost
  • Adopt modular structure design with small size, compact structure, strong versatility, easy installation and operation
  • Record 256 Events, and accurately trace back to the failure reason
  • The AC contactor can be blocked when has an extremely large short-circuit current, achieving complete protection of the MCC circuit by driving the circuit breaker by the product’s internal relay
  • With a strong and reliable RS485 communication interface, can undertake AC380V strong electricity without damage

 

The main function of PMAC811 Motor Protection and Control

 

Measurement

 Three-phase current, ground current, three-phase current imbalance rate, average current, positive sequence current, negative sequence current, three-phase line voltage, frequency, power factor, active power, reactive power, active energy, positive sequence voltage, negative sequence voltage, three-phase voltage unbalance rate, three-phase current harmonics, three-phase voltage harmonics, etc.
 

Protection

 Starting overtime, starting overcurrent, overload, tE time, stall, phase failure, imbalance, quick-break, grounding, underload/power, external failure, under/overvoltage, Phase sequence, TV disconnection, negative sequence protection etc.
 

Maintenance

 Record 256 recent event information (32 events of each type, total 8 types), record event type, occurrence time, characteristic quantity; cumulative total running/stop time of the motor, current running/stop time, total stop and trip times, maximum starting time/current, etc.
 

Control

  

Communication control, dangling power control, restart controlled by time-shared or in batch
 

Communication

  

2 channel RS485 interfaces, Modbus-RTU communication protocol. Support to expand Profibus-DP communication, DI/DO quantity, AI, temperature detection etc.

Specification of PMAC811 Motor Protection and Control

Working Power AC85-265V, DC100-300V Power / Electricity accuracy ±1%
Power Consumption <8W Working Temperature -20-60℃, 10-90% Non-condensing
Current Measurement Accuracy 50%-200%Ie, ±0.5% Storage Temperature -40-80℃, 10-90% Non-condensing
Voltage 50%-150%Ue, ±0.5% Implementation Standards GB 14048.4-2010, GB/T 14598.303-2011

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