Gmr-32b Phase Controller Manual

Connect the three-phase power lines directly to the input terminals of the GMR-32B. The device uses these to detect voltage levels, phase loss, and sequence.

Connect your load return directly to the supply neutral or second phase line. Control Signals (Low Voltage)

Cause: The internal heatsink temperature has exceeded 85°C.

The is an indispensable safety device in modern industrial setups, ensuring that three-phase loads are protected against fatal voltage and phase faults. By following the installation procedures in this guide, users can ensure robust protection for their motors and ⁠3-phase equipment .

– Look for a company name on the unit (e.g., Carlo Gavazzi, Omron, Benshaw, or a local brand). Search for [manufacturer] GMR-32B manual . gmr-32b phase controller manual

When the incoming voltage rises above or falls below a preset percentage of the nominal voltage (typically adjustable to approx. ±15%), the respective "过压" or "欠压" LED illuminates. If the voltage remains outside the safe range for the designated delay (approx. 7 seconds), the output relay de-energizes. Once the voltage returns to normal levels, the delay timer resets and the unit will automatically restore the relay to its normal state.

| Symptom | Probable Cause | Corrective Action | | :--- | :--- | :--- | | | No power supply / Internal Fuse blown. | Check L1/L2/L3 input connections; check internal fuse. | | Red LED Lit (Phase Loss) | Broken wire or blown upstream fuse. | Use multimeter to verify voltage on all three input terminals. | | Red LED Lit (Phase Seq) | L1, L2, L3 connected in wrong order. | Swap any two incoming power lines (e.g., swap L1 and L2) at the input terminal. | | Intermittent Tripping | Loose connection or Hysteresis set too low. | Tighten terminal screws; Increase Ud (Unbalance) threshold slightly. | | Relay Not Switching | External load exceeds relay rating. | Verify load current is < 3A; check for short circuit in external control wiring. |

If using single-strand solid wire, strip 8mm of insulation and insert it directly into the sampling terminals.

install this relay on the output side of variable frequency drives (VFDs) or frequency converters, as it can cause malfunction or damage. Operational Range : It is designed to work in temperatures ranging from negative 10 raised to the composed with power C positive 55 raised to the composed with power C with a relative humidity of Amazon.com.be Common Fault Indicators The relay typically uses LED indicators to show its status: Normal Operation Connect the three-phase power lines directly to the

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: Two Normally Open (NO) and two Normally Closed (NC) contacts, which are electrically inseparable Power Consumption : ≤ 10VA

Regular maintenance is also essential to ensure optimal performance and extend the lifespan of the device:

Mount the controller inside an IP54 or better industrial enclosure if operating in dusty or humid environments. Control Signals (Low Voltage) Cause: The internal heatsink

The device features a (or "reset") function. For example, if the unit trips on undervoltage at 340V, it will only automatically reset once the voltage recovers to a higher level (e.g., 345V). This prevents rapid relay oscillation when voltage is borderline, extending contactor and device life.

Auxiliary voltage source for manual potentiometer control.

Connect the outer wiper pins to +10V and COM , and the center adjustable pin to 0-10V . 5. Programming and Parameter Tuning