An electric fire pump controller connects to dual monitor modules using a signaling line circuit loop from the fire alarm control panel. Four normally open contacts monitor the pump or motor running status, loss of phase, phase reversal, and connection to an alternate source. Each monitoring circuit incorporates a 47k ohm end-of-line resistor.
9 FDM-1 8 7 6 5 0 1 2 3 4 - + - + - + - + 47K EOL 47K EOL N.O. N.O. ELECTRIC FIRE PUMP ELECTRIC FIRE PUMP WIRING DETAIL typical connection 9 FDM-1 8 7 6 5 0 1 2 3 4 - + - + - + - + 47K EOL 47K EOL N.O. N.O. SLC LOOP TO NEXT DEVICE SLC LOOP FROM "FACP" OR PREVIOUS DEVICE PUMP OR MOTOR RUNNING LOSS OF PHASE PHASE REVERSAL CONTROLLER CONNECTED TO ALTERNATE SOURCE
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