PISTON AS 2995204 - Caterpillar

Remote Emergency Power Off
Illustration 1 g00741799
Remote Emergency Power Off
Table 1
Switch Specifications    
Description    Value    
Wire in conduit     18 AWG (minimum)    
Maximum distance from UPS    
152 m (500 ft)    
Normally open contacts
Green     Pins 3 and 4    
Normally closed contacts
Red     Pins 1 and 2    The "REPO" button is used to initiate an Emergency Shutdown of the system. This will disconnect the power to the load of the UPS.
Illustration 2 g01107554
Remote Input Block
Table 2
Connections on the System Input/Output Board    
Description     "J14" Terminal Connection    
1 2 (1)     3     4 (1)    
Normally Closed Contacts (1 and 2)         X         X    
Normally Open Contacts (3 and 4)     X         X        
( 1 ) If the Normal Closed Contacts on the Remote Emergency Power Off Switch are not used, jumper terminal 2 to terminal 4.Configuring the Normally Open Contact
To use the normally open contacts in the Emergency Power Off switch, run wires from pin 3 and pin 4 in the EPO switch to the Remote Input Block that is located on the System I/O Module.Note: If the normally closed remote switch is not used, the normally closed pair of contacts must be jumpered for normal operation.Configuring the Normally Closed Contact
To use the normally closed contacts in the EPO switch, remove the jumper wire and run wires from pin 1 and pin 2 in the EPO switch to the Remote Input Block that is located on the System I/O Module.Note: The System I/O Module is located on the Left Component panel in the lower left hand corner. See Operation and Maintenance Manual, "Interfaces".Emergency Module Off (EMO)
The Emergency Module Off (EMO) option replaces the "EPO" buttons on the cabinets of systems with more than one flywheel power stage capability. The "EMO" button is blue in color. When the "EMO" button is pressed, the UPS is turned off and the load is transfered to bypass mode. If bypass power is not available, the power is turned off.Emergency System Off (ESO)
The Emergency System Off (ESO) option replaces the Local EPO button on the system cabinet of the following systems: the UPS 225 Expandable, the UPS 250 Expandable, the UPS 300 Expandable, UPS 500 Expandable, UPS 600 Expandable, UPS 750 Expandable and UPS 900 Expandable. The "ESO" button is yellow in color. When the "EMO" button is pressed, the UPS is turned off and the load is transfered to bypass mode. The load is turned off only if bypass power is not available. In comparison, the standard EPO button turns off the automatic bypass and the MMU(s). This means that power to the load is interrupted. The "ESO" button does not affect the bypass. Manual operation is required in order to turn the Bypass on and off. The "ESO" option is not available on the following single module systems: UPS 250 and UPS 300.
Illustration 3 g00760252
(13) Emergency Power Off Reset Circuit BreakerThe following