SPRING 1S0214 - Caterpillar

Remote Emergency Power Off Button
Illustration 1 g00741799
Remote Emergency Power Off Button
The "Remote Emergency Power Off" (REPO) button is used to initiate an emergency shutdown of the system. The REPO will disconnect the power to the load of the UPS.
Table 1
Switch Specifications
Description Value
Wire in conduit 18 AWG (minimum)
Maximum distance from UPS 152 m (500 ft)
Normally closed contacts
Red Pins 1 and 2
Normally open contacts
Green Pins 3 and 4
Illustration 2 g02833497
(1) NC contacts
(2) NO contactsConfiguration of the Normally Closed Contact
Perform the following instruction to use the normally closed contacts in the EPO switch:
Remove the jumper wire.
Route the wires from pin 1 and pin 2 in the EPO switch to the remote input block. The remote J7 input terminal is located on the system SIO board.Note: Refer to Operation and Maintenance Manual, "Electrical Connections" section in this manual for an illustration of the system SIO board. The J7 input terminal is labeled as call out (10).Note: The system I/O module is located on the left component panel in the lower left-hand corner. See the Systems Operations, "Interfaces" manual.Configuration of the Normally Open Contact
Inorder to use the normally open contacts in the EPO switch, route the wires from pin 3 and pin 4 to the remote J7 input terminal. The remote J7 input terminal is located on the system SIO board.Note: Refer to Operation and Maintenance Manual, "Electrical Connections" section in this manual for an illustration of the system SIO board. The J7 input terminal is labeled as call out (10).Note: If the normally closed remote switch is not used, the normally closed pair of contacts must be jumpered for normal operation.Maintenance Bypass
The maintenance bypass option allows complete system isolation without load interruption to perform maintenance on the UPS system.Four-Wire Input and Output (480 V 60 Hz)
The four-wire input and output option is used when a neutral connection is required.