Limits and alarms
Optional current limit, which can work in all firing modes, prevents excessive currents from flowing in the load circuit.
Optional alarms can warn of thyristor short circuit or load open circuit (GRF alarm). Additionally partial load failure with automatic set up can detect the loss of one out of up to four parallel loads (DLF alarm).
Over temperature shutdown is provided with fan cooled units (above 125 Amps) with optional alarm.
The Modbus communications option provides digital control of the unit, interrogation of the alarms, firing status and online configuration.