Protects motors, compressors, and pumps from running backward or running on fewer than three phases, which can cause overheating and catastrophic failure.
Troubleshooting (common cases)
| Indicator | Status | Meaning | Resulting Relay State | | :--- | :--- | :--- | :--- | | (Green) | ON | The three-phase supply is correct: phases are in the right sequence, all phases are present, and voltage levels are within the acceptable range. | Energized (Load can run) | | Phase Loss / Unbalance (Yellow) | ON | A phase is missing, or the voltage difference between phases is too great. | De-energized (Load protected) | | Phase Reversal (Inverse) (Red) | ON | The R, S, T phases are wired in the wrong order (e.g., R, T, S). | De-energized (Load protected) | | Over-voltage (Yellow/Red) | ON | The supply voltage has risen above the high threshold (typically 15% above rated voltage). | De-energized after delay | | Under-voltage (Yellow/Red) | ON | The supply voltage has fallen below the low threshold (typically 15% below rated voltage). | De-energized after delay |
Secure the unit firmly using M4 or M5 screws to optimize heat dissipation. 3. Wiring Layout and Terminal Connections
: Prolonged surges or over-voltage conditions stress internal motor coils. The controller opens the control circuit when voltages cross safe operational thresholds. gmr32b phase controller manual
The GMR-32B constantly samples the incoming three-phase waveform. It is engineered to guard against three primary types of catastrophic electrical events:
Apply a thin layer of thermal grease (silicon compound) to the back of the controller's aluminum baseplate.
Minimum 2500V AC between control circuit and power circuit.
380 VAC standard (compatible across industrial levels like 220V, 440V, and 460V at 50/60 Hz). | De-energized (Load protected) | | Phase Reversal
The (also manufactured under brands like COCIS / SICCOS ) is a high-precision, three-phase power supply protector designed to shield industrial equipment from critical electrical faults. Deployed heavily in heavy-duty machinery, HVAC systems, and elevator control panels , this phase sequence relay acts as an automated defense system. It monitors voltage stability and phase integrity to prevent catastrophic motor failure.
The ozone smell grew stronger. And the manual’s next page turned itself.
Proper installation is critical for equipment safety. Follow these steps derived from the manual guidelines :
| Parameter | Value | |-----------|-------| | Operating Voltage | 200–480 VAC ±10% (50/60 Hz) | | Rated Current | 32A (continuous, 40A for 10 sec) | | Control Inputs | 0–10 VDC, 4–20 mA, Potentiometer (10kΩ) | | Firing Modes | Phase angle, zero-cross burst, soft start | | Protection | Overcurrent, SCR overtemperature, missing phase | | Communication | RS-485 (Modbus RTU) optional | | De-energized after delay | Secure the unit
Always completely turn off the external power supply before installing or wiring the device to prevent electric shock or equipment damage. Terminal Layout:
Warning: The GMR32B does not merely adjust phase. It selects a reality strand from the quantum foam and forces local causality to align with it. Improper use may result in: temporal reflux, neighbor substitution (doppelgänger), or the gradual un-becoming of objects you have loved.
Position the unit over a standard HT35 DIN rail. Press downward until the integrated track springs snap locked.
The GMR-32B acts as a "security guard" for your machinery, offering several layers of protection: Phase Sequence Protection