Gmr-32b Phase Controller Manual Official

Section A — Short answer (20 marks) Answer all questions. 2 marks each.

A: The internal semiconductor fuses may blow. If not fused properly, the SCRs will short or explode. gmr-32b phase controller manual

| LED | State | Meaning | |-----|-------|---------| | | Steady | Control power OK | | | Flashing | Low voltage or internal fault | | IN (Yellow) | Dim/Off | No control signal | | | Bright | Control signal present | | OUT (Red) | Steady | SCRs firing | | | Flashing | Current limit active | | | Off | No output (enabled off or alarm) | Section A — Short answer (20 marks) Answer all questions