Manual: Gmr32b Phase Controller

One line has dropped zero voltage.

If one phase goes down (e.g., due to a blown fuse), the GMR32B detects the loss of voltage on that leg, immediately de-energizes the relay, and cuts power to the motor starter.

Hold for 3 seconds to exit and return to the main operational screen. Critical Parameter Table Parameter Code Description Default Value Adjustable Range P-01 Input Signal Selection (0 = 0-10V, 1 = 4-20mA, 2 = Pot) P-02 Soft Start Time (Ramp time from 0% to 100% output) 0.1s – 30.0s P-03 Minimum Output Limit (Floor voltage limitation) 0% – 50% P-04 Maximum Output Limit (Ceiling voltage limitation) 50% – 100% P-05 Overcurrent Trip Threshold Max Current Dependent on hardware model Calibrating Soft Start

What is this controller protecting (e.g., an elevator, a pump motor, or a conveyor belt)? gmr32b phase controller manual

The GMR32B acts as a "safety guard" before your machinery contactor.

Connect the positive loop wire to 4-20mA and negative to COM .

Pull down the plastic release clip at the base of the GMR-32B. One line has dropped zero voltage

Proper installation prevents nuisance tripping and ensures responsive equipment isolation during a fault. Always follow standard Lockout/Tagout (LOTO) safety protocols before opening any electrical enclosure. Step 1: Physical Mounting

be installed on the output side of a variable frequency drive (VFD). Amazon.com Input Connection:

: SPDT relay contacts are found on terminals 11, 12, and 14 . Mounting : Designed for standard 35mm DIN rail installation. 🛒 Where to Find Replacement Units Pull down the plastic release clip at the

Standard 35mm DIN Rail (HT35) or direct dual M4 screw mounting 79mm (3.11" Primary Diagnostic Protection Modes

Verify that cooling fans spin freely without excessive noise. Fault Codes and Troubleshooting Symptom / Error Code Potential Cause Remedial Action Load short circuit or excessive startup surge. Check load impedance; increase Soft Start time ( P-02 ). E-02 (Overheating) Poor ventilation or fan failure. Clear ambient obstructions; verify fan functionality. E-03 (Phase Loss) Missing input phase or blown input fuse. Measure voltage across L1 and L2 terminals. No Output Display Total loss of control power. Check control fuse or primary power supply connections. Output Always Max Thyristor short-circuit (puncture) or bad input signal.