Snaps the controller firmly onto a standard . Ensure there is at least 10mm of free space on both the left and right sides of the controller to facilitate passive air cooling. Step 2: Primary Power Influx Wiring
There is no PDF catalog available on public databases, but the wiring is universal:
Functionality & Performance
The is an essential, heavy-duty industrial monitor designed to protect multi-phase equipment by detecting power faults in real time. Manufactured by brands like COCIS (SICCOS), this high-performance monitoring relay serves as an indispensable safety barrier for central air conditioning compressors, elevator systems, water pumps, and industrial motors. gmr32b phase controller manual hot
5 LEDs (Normal, Phase Loss, Reverse Phase, Overvoltage, Undervoltage)
If the device is "hot" and showing fault lights, use this key to diagnose: : Voltage imbalance between phases. Reverse Phase : Phases are not in the correct
: Connect the three input phases (L1, L2, L3) to the designated terminals. Snaps the controller firmly onto a standard
Power down. Tighten terminal screws. Check current draw with a clamp meter. R, S, T phase sequence is incorrect.
: Use a multimeter to verify that all three phases are stable and within the 380V range.
When placed down-line of electronic switching power devices or unshielded VFDs, high-frequency harmonic distortions superimpose onto the fundamental 50/60Hz voltage wave. The internal capacitor-diode voltage absorption and smoothing circuits will try to dissipate these higher frequencies, manifesting as excess heat. Power down
The GMR32B (often branded as COCIS) is a compact, DIN-rail mounted three-phase voltage and phase-sequence protection relay. It is widely used in industrial and commercial environments to protect motors, HVAC systems, and other machinery from phase loss, incorrect phase sequence, and undervoltage.
If the controller does not operate normally, check for the following:
: Protects against over-voltage and under-voltage conditions.
The GMR-32B is engineered for seamless integration into standard industrial control panels. Below is an overview of the foundational electrical data typically sourced from the manufacturer specifications: Specification Details 380V AC to 400V AC, 50/60 Hz Monitored Safeguards Phase Sequence, Phase Loss, Overvoltage, Undervoltage Contact Form Configurations Two Normally Open (NO) & Two Normally Closed (NC) Conventional Heating Current Connection Capacity 250VAC at 6A / 30VDC at 3A Power Consumption ≤is less than or equal to Mounting Standard 35 mm DIN Rail Dimensions 79 mm × 23 mm × 79 mm Enclosure Protection Rating IP20 (Dust and touch resistance) Critical Functions Explained 1. Phase Sequence Detection (Incorrect Rotation)