Powerware 9170 User Manual page 39

12.
EPO and external bypass circuits are not isolated from line voltage, and wiring
must be installed according to local codes using conduit or suitable primary
supply cables.
13.
NOTE
cable tie used for Generator On wires.
14.
+
Powerware 9170 UPS User's Guide
®
If any external hardwired control signals are required (EPO or
Generator On), unscrew and remove the top rear panel of the
cabinet and locate the terminal block (see Figure 21).
C A U T I O N
The Generator On signal is isolated from line voltage and can be
treated as NEC Class 2 wiring.
Use 14–20 AWG, 600V wire (UL) or 14–26 AWG, 300V wire
(CSA) for all input control signals.
Generator On
(Normally Open)
External Bypass *(Short to Common When Active)
Generator Set
Figure 21. Input Control Signal Wiring
Place the signal wires through the proper conduit or grommet
above the terminal block and attach to appropriate terminals.
Secure each connection by torquing terminal screws to a
maximum 3.5 in lb (0.4 Nm). Provide strain relief for cables by
installing plastic cable ties.
Do not strain relieve EPO or external bypass wiring with the same
Remove the jumper between terminals 5 and 6 only if you are
wiring from an EPO switch. (See "Changing Parameter Settings"
on page 81 for information about accessing menu 4, submenu 3,
item 2 to view or change the EPO switch type.)
Rev B www.powerware.com
S
UPS with Bypass Electrical Installation
Signal
Common
Plastic Cable Tie
Emergency Power-Off (Normally Closed)
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