Gmr-32b Phase Controller Manual Here
| 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) |
| Indicator | Color / Label | Meaning / What to Do | | :--- | :--- | :--- | | | Green / 'Normal' | This should be the only lit LED. It confirms correct phase sequence (L1-L2-L3) and voltage is within tolerance. | | Reverse Phase | Red / 'Reverse' (or 'Inverse') | Two phases are swapped. Immediately swap any two of the three incoming power leads (e.g., L1 and L2) at the input terminal block to correct this. | | Phase Loss | Yellow 'Upper' / 'Loss' | One or more phases is missing. Check upstream fuses, breakers, and connections. The GMR-32B's protection is unaffected by load current —it monitors pure voltage. | | Over Voltage | Yellow 'Lower' / 'OV' | Supply voltage exceeds the set threshold. Verify incoming voltage to the facility and check if an upstream tap changer or regulator needs adjustment. | | Under Voltage | Yellow 'Lower' / 'UV' | Supply voltage has dropped below the set threshold. Inspect for loose connections, heavy load startup, or utility brownout conditions. |
Use stranded or solid wires between 0.25 to 1.5 mm² (AWG24 to AWG16). 💡 Visual Indicators The device typically features LEDs to signal status: PWR (Green): Indicates power supply is present. OUT (Yellow): Indicates the relay output is active.
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 gmr-32b phase controller manual
The device utilizes a "Common" and "NO" (Normally Open) point for control wiring; if the power supply is correct, the relay completes the circuit to allow the motor contactor to operate. Wiring Summary
The GMR-32B Phase Controller is a high-performance, industrial-grade power management device designed for precise electrical phase regulation, motor speed control, and heating element modulation. This manual provides comprehensive instructions for installation, wiring, programming, and troubleshooting the GMR-32B unit. 1. Product Overview and Technical Specifications
⚡ High voltage equipment poses significant risks if handled improperly. | Specification | GMR-32B / Smart Series Value
: Instantly trips the circuit during a phase reversal or voltage spike, preventing motor damage. Ease of Use
If a DIN rail is unavailable, extend the slide-out accessories located on both sides of the product's bottom. Fasten the module using two M4 screws through the integrated mounting holes.
There are two ways to physically mount the device: | | Reverse Phase | Red / 'Reverse'
A red light or a dark indicator indicates a fault.
For further reading, look for application notes on “Phase angle control of infrared heaters” and “Reducing harmonics with burst firing.” These advanced topics will help you optimize the GMR-32B for your specific industrial process.