ARD2M Series Smart Motor Protection Relay
Overview
ARD2M motor protector (hereinafter referred to as protector) is suitable for low-voltage motor circuits with rated voltages up to 380V, integrating protection, measurement, control, communication, and operation and maintenance. Its complete protection functions ensure the safe operation of the motor, and it has logic programmable functions that can meet a variety of control methods.
This product has two structural options: integrated and split. It consists of a main body and a transformer, and can be adapted to the installation of various cabinets.
■Supports power parameter measurement (U, I, P, Q, S, PF, F, EP, EQ), current and current unbalance, current positive sequence, negative sequence, zero sequence analysis
quantity, voltage, three-phase voltage phase angle, and residual current.
■ Protection functions include overload inverse time limit, overload definite time limit, grounding, starting timeout, leakage, underload, phase failure, blocked rotor, obstruction, short circuit, overflow,
Unbalance (current, voltage), overpower, underpower, overvoltage, undervoltage, phase sequence, temperature, tE time, external fault, limit on number of starts, operation
Alarm for running time and number of failures.
Main Parameters
■ 8 programmable DI inputs, built-in DC24V power supply by default, external active wet contacts can also be selected.
■ 5 channels of programmable DO output, meeting direct starting, star-delta starting, autotransformer starting, and other starting methods, which can be controlled through the communication bus
The main station can realize the remote control "start/stop" of the motor via the main station.
■ Optional anti-shock function: Supports immediate restart after power shock and restart after voltage loss.
■ Standard MODBUS_RTU communication, optional PROFIBUS DP communication, supports up to 2 communication interfaces.
■ Optional 1-channel 4-20mA analog output interface can be connected to the DCS system to monitor on-site equipment.
■ It has various event records such as fault record, starting record, parking record, DI displacement record and restart record.
Wiring Diagram
Typical Connection
Live Application Pictures
Application
