Square D Electronic Timing Relays Page 4 Application, General Information

Application, General Information Type JCK Electronic Timing Relays Timing Functions Class 9050 Type JCK1/ JCK60 JCK2 JCK3 JCK4 JCK5 JCK70 Timing Functions On Delay Off Delay Off Delay Power Trigger Interval One Shot One Shot Power Trigger Repeat Cycle-Off Repeat Cycle-On On/Off Delay One Shot Falling Edge Watchdog Trigger On Delay Number of Pins 8 11 8 11 8 11 9050JCK Electronic Timing Functions Function Description Timing Diagram On Delay When the input voltage is applied, the time delay begins. Relay contacts change state after time delay is complete. When the input voltage is removed, contacts return to their shelf state. The trigger switch is not used in this function. Interval When the input voltage is applied, the relay contacts change state immediately and the timing cycle begins. When the time delay is complete, or when the input voltage is removed, contacts return to shelf state. The trigger switch is not used in this function. Off Delay Switch and Power Trigger Input voltage must be applied continuously. When the trigger switch closes, the relay contacts change state. When the trigger switch opens, the time delay begins. When the delay is complete, the contacts return to their shelf state. If the trigger switch closes before the time delay is complete, then timing is reset. When the trigger switch opens, the delay begins again, and the relay contacts remain in their energized state. If the input voltage is removed, the relay contacts return to their shelf state. One Shot Switch and Power Trigger Input voltage must be applied continuously. When the trigger switch closes, the relay contacts change state and the pre-set delay begins. During time-out, the trigger signal is ignored. If the input voltage is removed, the relay contacts return to their shelf state. ON OFF ON OFF DELAY Input Voltage Relay Contacts DELAY ON OFF ON OFF Input Voltage Relay Contacts ON OFF CLOSED OPEN ON OFF Input Voltage Trigger Switch Relay Contacts DELAY Trigger Switch CLOSED OPEN ON OFF Input Voltage ON OFF Relay Contacts DELAY 4

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