Does the job for professionals, but frustrating for anyone without prior phase controller experience. Demands a rewrite with clearer safety callouts and a decision-tree troubleshooting guide.
Note on Product Identification: The model number "GMR-32B" strongly resembles the nomenclature used by Gecom (Global Energy Control) for their Generator Controller/Auto Mains Failure (AMF) Controllers (specifically the GMR series). It is likely a typographical variation of the GMR-31B or GMR-32 series.
Below is a formal technical report drafted to cover the standard operational manual, specifications, and functional overview for this class of GMR Phase/Generator Controllers.
Precise Specifications (5/5)
Startup Procedure & Calibration (3/5)
Report Disclaimer: This document is a condensed operational reference. For detailed schematics, dimensional drawings, and warranty information,
The GMR-32B Phase Controller (also known as a phase monitoring or sequence relay) is a protection device for three-phase systems. It is primarily used to detect faults such as overvoltage, undervoltage, phase loss, and incorrect phase sequence. gmr-32b phase controller manual
Below is the technical data and operating guide synthesized from the available product documentation. Technical Specifications Feature Rated Voltage 380VAC (Range up to 460V or 500V depending on manufacturer) Main Functions
Phase loss, reverse phase, overvoltage, undervoltage, unbalance protection Contact Form 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
Power side of three-phase network (Do not install on VFD output) Indicator Status Guide
The controller typically features 5 LED indicators to diagnose the power status:
Normal: Power is within safe parameters and phase sequence is correct. Phase Loss: One or more phases are missing.
Reverse Phase: The phase sequence is incorrect (swapped phases). Overvoltage: Input voltage exceeds the safety threshold. Undervoltage: Input voltage is below the safety threshold. Installation & Wiring Mounting: The unit is standard DIN-rail mountable. Does the job for professionals, but frustrating for
Input Connection: Connect the three phases (L1, L2, L3) to the input terminals. Wiring Material: Use insulated copper wire (
). Single-strand wire can be inserted directly; multi-strand wire requires pin terminals for reliability.
Application Note: Always install on the line/supply side. Placing the relay on the output side of a variable frequency drive (VFD) will cause it to malfunction. Reference Manual
For the original full-text PDF document, you can view the GMR-32B Series Protection Relay Data Sheet or access the GMR-32B Manual Library for additional versions.
Are you troubleshooting a specific error light or looking for wiring diagrams for a particular motor type?
The controller indicates faults via LEDs and the LCD screen. Common faults include: Precise Specifications (5/5)
| Fault Indicator | Probable Cause | Action Required | | :--- | :--- | :--- | | Fail to Start | Battery low, Fuel solenoid stuck, Air in fuel. | Check battery voltage; Check fuel lines. | | Low Oil Pressure | Low oil level, Faulty sender, Pump failure. | Check dipstick; Replace sender if defective. | | High Temp | Low coolant, Belt broken, Radiator blocked. | Check coolant level; Inspect fan belt. | | Emergency Stop | Emergency stop button pressed. | Reset button; Clear E-Stop alarm on screen. | | Phase Sequence | Incorrect wiring of generator output. | Swap two phases on the alternator output. |
The rear panel features:
The GMR-32B features a straightforward front panel layout with the following controls:
To operate the GMR-32B:
Typical terminals labeled C1, C2, GND:
| Signal Type | Connection | |-------------|-------------| | 4-20 mA | C1 (+24V loop), C2 (signal), GND | | 0-10V DC | C1 (+10V), C2 (input), GND | | Potentiometer (10kΩ) | C1 (wiper), C2 (CW), GND (CCW) |