General
Motor protection controller WDH-31-210 serves for the protection and control for low-voltage AC asynchronous motor, provides various control modes and protection functions, rich on-off quantity input and relay output programming functions, and can meet different requirements for on-site protection and control.
Features
Control modeProtection mode, direct starting, two-way starting, two-speed starting, star/triangular starting, auto-transformer step-down starting, soft starter with starting, inverter and starting
ProtectionOverload inverse time, starting a timeout, locked-rotor, obstruction, short circuit, current imbalance, phase failure, underload, over flow, overvoltage, undervoltage, residual current, phase sequence, temperature, analog input, tE time, external fault protection, all the protection function can set the alarm value and action at the same time, and can be cast out, respectively
MeasurementThree-phase voltage, three-phase current.
Data record8 fault records, 8 entry and change bit records, 8 starting records and 8 parking records
DisplayDot matrix LCD screen, Chinese and English display interface, visualized display of parameters, information and states
OutputSupporting Modbus-RTU or Profibus-DP communication protocol;5-channel programmable switching value input;4-channel programmable relay output;1-channel programmable analog output
