: Often compatible with standard DIN rails for easy control panel integration. Installation Basics While specific manual steps vary by manufacturer (such as ), general installation involves: Wiring the Three Phases
This device is specifically designed to work on three-phase circuits, typically 380V, and is intended for installation on the output side of a variable frequency drive (VFD). The GMR32B directly samples the incoming three-phase supply.
| Terminal | Label | Function | |----------|-------|-----------| | 1 (L1) | LINE | AC line input (R phase) | | 2 (T1) | LOAD | To load (heater, lamp, etc.) | | 3 | COM | Common for control signal | | 4 | IN+ | 4–20 mA or 0–10 V input (+) | | 5 | ALM+ | Alarm relay NO (normally open) | | 6 | ALM- | Alarm relay common | | 7 | RST | Reset input (momentary to common) | | 8 | +10V | 10 VDC reference for potentiometer | | PE | Ground | Protective earth (chassis) | gmr32b phase controller manual
| LED | Color | Meaning | |-----|-------|---------| | POWER | Green | Control logic powered (aux 24V present) | | FIRE | Yellow | SCR gate pulses active (output > 0%) | | ALARM | Red | Over-temperature, phase loss, or fuse blown |
| Problem | Possible Cause | Solution | | :--- | :--- | :--- | | | No power supply. | Check the main incoming power to the panel. | | Green 'Normal' LED is off; Red or Yellow fault LED is on. | A specific fault condition is present. | Identify which LED is on and refer to Section 4 of this manual to diagnose the fault. Common issues include phase loss, incorrect phasing, or voltage imbalance. | | Load cycles on and off intermittently. | Power fluctuations causing frequent over/under-voltage trips. | Check the supply voltage stability. The device is likely doing its job correctly. | | Motor fails to start, but all LEDs appear normal. | External wiring fault. | Check the control circuit wiring between the GMR-32B's output relay and the load's contactor or starter. | | Where should this be installed? | Application question. | Mount it on a DIN rail inside the main control panel, upstream of any VFDs. | : Often compatible with standard DIN rails for
Perform a visual inspection for heat damage. Replace the module immediately if internal components have failed. Heavy transient voltage sag from large motor startups.
The GMR32B series is built with high-quality components and complies with major international safety standards: | A specific fault condition is present
Follow these operational steps compiled by industrial field technicians to secure the controller inside your enclosure. Step 1: Lockout/Tagout (LOTO) Procedures
The (often branded as COCIS ) is a micro-controlled electrical protection relay designed to safeguard three-phase equipment like motors, air conditioners, and pumps from power supply faults. Core Functions