⚡ High voltage equipment poses significant risks if handled improperly.
It continuously monitors the generator output. If the generator fails to reach the correct voltage or frequency within a configurable time, the controller will shut down the generator and trigger an alarm.
115V AC / 230V AC or 24V DC auxiliary power (model specific, ±10% tolerance). Line Frequency Auto-Tracking: 45 Hz to 65 Hz. Control Input Options (Selectable): 4–20 mA DC (Input impedance: 250 Ωcap omega 0–10 V DC (Input impedance: 100 k Ωcap omega 0–5 V DC Manual Potentiometer (10 k Ωcap omega
| Specification | GMR-32B / Smart Series Value | | :--- | :--- | | | 200-500VAC (Standard), up to 690VAC (Smart Series) | | Frequency | 50 / 60 Hz | | Rated Control Circuit Voltage | Three-phase 220V, 380V, 400V, 415V, 440V, 460V | | Relay Contact Capacity | 5A at 250VAC (resistive load) | | Voltage Measurement Accuracy | ±1% of reading | | Over/Under Voltage Set Point | Adjustable approx. ±15% of nominal voltage | | Over/Under Voltage Hysteresis | 7V (prevents relay chatter) | | Voltage Imbalance Trip Level | >10% or >20% (model dependent) | | Response Time (Trip Delay) | Phase Loss: 1s / Phase Sequence: 0.1s / Over/Under Voltage: 7s / Imbalance: 5s | | Reset Mode | Automatic (restores function when fault clears) |
When a fault condition (voltage imbalance, under-voltage, etc.) is resolved, the GMR-32B features . Once the supply returns to a healthy state within specification, the output relay will re-energize and the equipment can restart without manual intervention. gmr-32b phase controller manual
When configured for AMF, the controller monitors the Mains (Utility) supply. Upon detection of a mains failure (blackout or phase unbalance), it automatically:
If your motor or device fails to start, the GMR-32B may be protecting it from a faulty power supply. Potential Cause Wrong phase sequence Switch any two of the three input phases (L1, L2, L3). Relay flashes/flickers Voltage instability (high/low) Check for voltage fluctuations using a multimeter. Output circuit is dead Phase loss (one phase is down) Check incoming power lines for a dead phase. Device is hot Ambient temp too high / Overload Ensure ventilation in the control cabinet. 6. Maintenance and Safety
: Indicates proper phase sequence and voltage within nominal thresholds. The internal control relay engages.
This report is structured to serve as a practical, quick-reference guide for the . It condenses typical operational data found in technical manuals into an actionable format for technicians and engineers. ⚡ High voltage equipment poses significant risks if
Sets the base power level when the control signal is at its lowest value (e.g., 4mA or 0V). Turn clockwise to pre-heat elements.
If you’re installing or maintaining a GMR-32B Phase Controller, download the official manual for model-specific wiring diagrams and safety details, and consult a licensed electrician for high-voltage work. Leave a comment with your setup or questions below.
The controller indicates faults via LEDs and the LCD screen. Common faults include:
| 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. | 115V AC / 230V AC or 24V DC
The GMR-32B allows users to adjust parameters via the front panel buttons or PC software (via RS485/USB). Key programmable parameters include:
: Connect input phases to U, V, and W. Run the control loop through the NO/COM relay output.
Maintain a minimum of 50mm (2 inches) of free air clearance above and below the unit to facilitate natural convection.