Eaton EPCT Fire Series Installation Manual

10OperationEPCT FirE sEriEs FirE PumP ConTrollEr MN124016EN August 2019 www.eaton.com4.4.1.11. InterlockWhen this input is in the “Connected” state, the EPCTcontroller will not permit a start of the motor except forEmergency Start. This input is typically used in backup stylesystems. For example, the Engine Running contacts fromthe backup Diesel Engine Controller are wired into thisinput. When the Diesel Engine is running, it will lock out theEPCT panel to prevent it from starting.4.4.1.12. Low reservoirWhen this input is in the “Connected” state, the EPCTcontroller will signal a visual indication on the main displayboard for Low Reservoir. The Common Alarm relay will alsode-energize for remote monitoring of this alarm.4.4.1.13. High reservoirWhen this input is in the “Connected” state, the EPCTcontroller will signal a visual indication on the main displayboard for High Reservoir. The Common Alarm relay will alsode-energize for remote monitoring of this alarm.4.4.1.14. Go to source 1When this input is in the “Connected” state, the EPCTcontroller will transfer the transfer switch to Source 1, if itis not already on Source 1, regardless of the state of theincoming voltage. “Disconnecting” this input, the controllerwill resume normal transfer switch operations.4.4.1.15. Go To Source 2When this input is in the “Connected” state, the EPCTcontroller will transfer the transfer switch to Source 2, if itis not already on Source 2, regardless of the state of theincoming voltage. “Disconnecting” this input, the controllerwill resume normal transfer switch operations.4.4.1.16. Enable Sequential StartWhen this input is in the “Connected” state and the timeris programmed, the controller will delay all automaticstarting means for the duration of the programmed timer.4.5 Output relaysThe primary control outputs of the EPCT controller are dryrelay contacts. These relays are comprised of two separate“Form C” outputs for Power/Phase Failure, Phase Reversal,Common Alarm, and Pump Run. The alarm relays are UL/CSA rated at 8A 250Vac / 30Vdc.Each relay has a green LED on the I/O board to indicate therelay status. If the LED is “On” the relay is energized and“Off” the relay is de-energized.4.5.1 Startup (1CR)The Startup (1CR) relay is the motor start relay. It willenergize when there is a call-to-start. When the relay closes,it provides full voltage to the start/run contactor. This is nota reprogrammable relay.4.5.2 Acceleration (2CR)The Acceleration (2CR) relay is used on reduced voltagestarting controllers only. It will energize after theprogrammed acceleration time delay expires. When therelay closes, it provides full voltage to the run contactor(s).This is not a reprogrammable relay.4.5.3 Common alarm (3CR)The Common Alarm (3CR) relay is a normally energizedrelay and is used to alarm on various alarming conditions.The relay will de-energize (change state) when any of theevents programmed into the Common Alarm Settings in thePanel Setup tab becomes true.4.5.4 Power / phase failure (4CR)The Power/Phase Failure (4CR) relay is a normally energizedrelay and is used to alarm when there is a voltage or phaseimbalance. The relay will de-energize when the voltage orphasing levels exceed the allowable, programmed threshold.4.5.5 Phase reversal (5CR)The Phase Reversal (5CR) relay is used for remotemonitoring of a phase reversal condition. The phase reversalalarm is factory set in an ABC configuration.4.5.6 Pump run (6CR)The Pump Run (6CR) relay is used for remote monitoringwhen the pump is running. When the line current exceeds20% of the programmed motor FLA, this relay will energize.