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Installing a Remote Emergency Power-Off Control
5-2
Powerware
®
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
6. Remove the screws securing the internal panel covering the TB1 and TB2 terminal
blocks at the top of the UPS cabinet (see Drawing 164201535-8 starting on
page A-33).
7. If installing in terface wiring from the bottom of the cabinet, proceed to Step 8;
otherwise, proceed to Step 10.
8. Remove the screws securing the top internal safety shield panel and open the
panel to gain access to the bottom wiring entry.
9. Remove the screws securing the bottom internal safety shield panel and remove
the panel to gain access to the bottom conduit landing plate.
10. To locate appropriate terminals and to review the wiring and termination
requirements (see Figure 5-1 and Drawing 164201535-8 starting on page A-33).
11. Route and connect the wiring as shown in Table 5-1 and Table 5-2.
12. If the normally-closed EPO contact is not used, connect the jumper wire between
pins 8 and 9 on TB1.
Table 5-1. REPO Wire Terminations
From REPO Station(s) To Customer Interface
Terminal Board TB 1 in UPS Cabinet
Remarks
TB1-4 TB-7
Twisted Wires
(
2
)
TB1-5 TB-9
T
w
i
s
t
e
d
W
i
r
e
s
(
2
)
14–22 AWG
Table 5-2. REPO
7(NO)
UPS TB1
REPO
Switch
(NO)
Twisted
Wires
9(RTN)
8(NC)
REPO switch rating is 24 Vdc. 1A minimum if supplied by user.
NOTE This switch must be a dedicated switch not tied into any other circuits.