: Connect the incoming primary lines (Phase A, B, C or L1, L2, L3) straight to the matching input terminals marked U, V, and W (alternatively labeled R, S, T on some model faces).
The GMR-32B is designed for flexible mounting within a control panel. Its compact size of approximately allows for easy installation even in crowded enclosures.
. Single-strand solid core wire may insert directly into the pressure plate terminals. When using flexible stranded wire, crimp on a needle-type or pin ferrule terminal beforehand to guarantee mechanical reliability.
Phase loss, reverse phase, overvoltage, undervoltage, unbalance protection 2 NO (Normally Open) + 2 NC (Normally Closed) Contact Capacity 250VAC 6A, 30VDC 3A Dimensions 79 x 23 x 79 mm Power Consumption ≤is less than or equal to 10 VA Installation Side
Proper physical placement prevents thermal runaway and electrical noise interference. Mounting Steps gmr-32b phase controller manual
Use shielded cables for control inputs. Ground the shield at the controller end only.
If you need help identifying which type of three-phase protection is right for you, I can also compare the GMR-32B with other monitoring relay models in terms of price, sensitivity, and functionality. Would that be helpful?
: Turn off power, safely swap incoming lines L1 and L2, and turn power back on. The Reverse Phase red LED must turn on immediately, and the downstream contactor must remain open. Switch power off and return the wiring to the original sequence. Troubleshooting Common Faults
: If your specific sub-variant includes adjustable dials or front-panel DIP switches, set your upper and lower voltage limits according to your plant specs. For standard fixed 380VAC models, the inner micro-control parameters are preset at the factory. : Connect the incoming primary lines (Phase A,
The GMR-32B relies on precise internal parameters to continuously analyze incoming line status without being influenced by load currents or downstream asymmetry.
Connect your 4-20mA or 0-10V signal from the PLC.
The front panel usually features a mode selector switch or buttons with three states:
To help me tailor any specific technical support or parameter calculations for your GMR-32B controller, please let me know: Your specific (e.g., 4-20mA, 0-10V)? 1. Input Side (Power Sampling)
This document is a condensed operational reference. For detailed schematics, dimensional drawings, and warranty information,
is a three-phase sequence monitoring relay (also commonly called a phase controller or protector) used to safeguard industrial equipment like motors, compressors, and pumps from power supply faults. It is widely used in central air conditioning units, elevators, and distribution boxes to prevent damage from phase reversal or voltage imbalances. AliExpress Key Technical Specifications
Before installation, you must obtain the official manual. Due to product iterations, the manual may vary. Common sources include:
Are you integrating this unit into a or a manual push-button starter circuit?
The terminal interface supports insulated copper wires ranging between . When using stranded wiring, crimp pin-style ferrules onto the conductors to establish low-resistance, vibration-proof connections. 1. Input Side (Power Sampling)