Quick Start (essentials)
Core Concepts (short primer)
Safety & Protective Measures (highlights) gmr32b phase controller manual
Troubleshooting (common cases)
Maintenance
| Red LED pattern | Meaning | Action | |----------------|---------|--------| | 1 blink / sec | Overcurrent >40A | Reduce load or adjust P3 | | 2 blinks / sec | SCR overtemperature (>85°C) | Improve cooling, check fan | | 3 blinks / sec | Missing phase on input | Inspect L1/L2/L3 fuses | | Continuous | Internal error | Cycle power; replace if persists |
Follow this step-by-step routine after wiring: Quick Start (essentials)
Note: Some GMR32B revisions have digitally stored calibration. In that case, use the “AUTO-TUNE” button (press 3 seconds) during step 4.
(Note: Always disconnect power before wiring. High voltage is present.) Core Concepts (short primer)