Eaton 9PXM - Figure 77. Normally Open Connections; Figure 78. EPO Normally Closed Connections

4–20kVA Users Guide P-164000669 4–20kVA Users Guide P-164000669—Rev 09 93
NO Configuration
For Normally Open operation, configure as in Figure 77 with external switch wired to Pins 3 and 4 of CN7.
18AWG Twisted wire is to be used for EPO connections.
Figure 77. Normally Open Connections
REPO
Switch
(NO)
Twisted
Wires
3
3
REPO TB
NOTE REPO switch rating is 24 Vdc. 1A minimum
NOTE The REPO switch must be a latching type switch not tied to any other cicuits.
4
4
2
1
NC Configuration
For Normally Closed operation, add a jumper between Pins 3 and 4 of CN7 and the EPO switch should be
connected to Pins 1 and 2 and should be closed during normal operation of the UPS (see Figure 78 ).
Figure 78. EPO Normally Closed Connections
REPO
Switch
(NO)
Twisted
Wires
1
3
REPO TB
2
4
2
1
NOTE REPO switch rating is 24 Vdc. 1A minimum
NOTE The REPO switch must be a latching type switch not tied to any other cicuits.
Maintenance Bypass: The signal from an external bypass switch, to isolate the Eaton 9PXM system for
maintenance purposes, tells the UPS to go into Internal Bypass mode.
On Generator: The signal allows the UPS to optimize its operation with the generator by transferring the UPS
from High Efficiency mode to Normal (double conversion) mode as long as High Efficiency is set as the default
mode of UPS operation. See IN/Out setting.
Dedicated Input Signals