SYSTEMS OPERATIONTM 5-3805-258-24-1OPERATOR’S STATIONINDIVIDUAL CIRCUIT DESCRIPTIONPower To Operator PanelCurrent is sent to the operator panel when the main power relay is activated.It is sent from the 60 amp main circuit breaker, through the main power relay,and through the 10 amp operator panel fuse to Pin 1 of the operator panel. Pin 2of the operator panel is connected to machine ground.Power To Operator Panel CircuitTest Circuit For Operator Panel, Master Fault Light And Fault AlarmThe test circuit is activated by a momentary contact Single Pole, SingleThrow (SPST) Toggle Switch. When the switch is closed, contacts 1 and 2 ofthe test switch make a ground for Pin 15 for the operator panel. When Pin 15 ofthe operator panel is at ground potential, all of the operator panel indicators areON. The operator panel sends current through Pin 11 to turn ON the masterfault light. If the fuel pressure switch makes an open circuit (engine running) toPin 13 of the operator panel, current is sent through Pin 10 to activate the faultalarm.MASTER FAULT LIGHT1. Master fault light.FAULT ALARM2. Fault alarm.3-164
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