Gmr-32b Phase Controller Manual ((new)) Online

| Indicator Label | LED Color | Indicated Status / Meaning | | :--- | :--- | :--- | | | Green | Normal: Power is ON, phase sequence is correct, and all monitored parameters are within acceptable limits. The output relay should be energized, allowing the equipment to start. | | 缺相 / Imbalance | Yellow (or Red) | Phase Loss or Severe Imbalance: One of the three phases (L1, L2, L3) is missing or the voltage imbalance is too high. The relay will de-energize to protect the load from overheating or single-phasing. | | 逆相 / Reverse Phase | Red | Incorrect Phase Sequence: The L1, L2, L3 connections are in the wrong order. To correct this fault, swap any two of the three-phase power leads at the controller's input terminals. | | 过压 / Over Voltage | Yellow | Over-Voltage: The supply voltage has risen above the set protection threshold for over 7 seconds (approx.). The relay will trip to protect the equipment from over-voltage stress. | | 欠压 / Under Voltage | Yellow | Under-Voltage: The supply voltage has dropped below the set protection threshold for over 7 seconds (approx.). The relay will trip to prevent the motor from drawing excessive current. |

Significant differences in voltage between the phases create excessive heat in motor windings. The device calculates this asymmetry and safely disengages the system. Installation & Wiring Guide gmr-32b phase controller manual

A: Most devices only protect a motor when it is running ('dynamic' phase loss). The GMR-32B's advanced digital design monitors the line voltage even when the motor starter is open ('static' state). It will prevent the motor from starting if a phase is missing before the start command is ever given. | Indicator Label | LED Color | Indicated

Most GMR-32B units have three LEDs:

Use insulated copper wire (1.0~2.5mm²). Ensure the wire is inserted fully (8mm depth) to maintain dielectric strength. Control Circuit Wiring (Output): The relay will de-energize to protect the load

Ensuring safe and predictable motor operations.