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4.7.6
Installing External Parallel Pull Chain Control Wiring and Connections
NOTE 1
NOTE 2
NOTE 3
NOTE 4
NOTE 5
To install wiring:
1.
Verify the UPS system is turned off and all power sources are removed. See Chapter 6, "UPS Operating
Instructions, " for shutdown instructions.
2.
If not already opened, open the front door by lifting the latch from the bottom and turning to the right
(counterclockwise) and swing the door open.
3.
If wiring the external parallel pull chain connections using the inter-cabinet wiring access pass-through
(line-up-and-match configurations), proceed to Step 4; if wiring the external parallel pull chain connections
using bottom entry access, proceed to Step 6; if wiring the external parallel pull chain connections using
top entry access, proceed to Step 12.
4.
Pass-through Wiring. Route the external parallel pull chain control wiring between UPS cabinets through
the top UPS inter-cabinet wiring access pass-through to the UPS external parallel terminals. See
Figure 4-6 for UPS wiring access information, and Figure 4-9 and Figure 4-10 for UPS interface terminal
locations.
5.
Proceed to Step 15.
6.
Bottom Entry Wiring. Remove the bottom interface entry conduit landing plate to drill or punch holes
(see Figure 4-11).
7 .
Reinstall the interface entry plate and install the conduit.
8.
Route the external parallel pull chain control wiring through the bottom interface entry conduit landing
plate to the bottom access interface wiring channel along the inside of the front door (see Figure 4-11).
9.
Route the wiring along the interface wiring channel (see Figure 4-11) to the UPS external parallel and
building alarm terminals. See Figure 4-9 and Figure 4-10 for UPS interface terminal locations.
10. Secure the wiring to the wire tie anchors provided (see Figure 4-12) using Zip ties.
11. Proceed to Step 15.
12. Top Entry Wiring. Remove the top interface entry conduit landing plate to drill or punch holes (see
Figure 4-4).
13. Reinstall the interface entry plate and install the conduit.
Eaton 93PM UPS (20–50 kW, 480V Four Wire – 50 kW Frame) Installation and Operation Manual P-164000540—Rev 4
An UPS building alarm input is used to indicate an open MOB.
Any pair of unused building alarm terminals may be used for the MOB Aux 1
connections.
Program the MOB building alarm to read MOB open and for normally closed
contacts.
If installing interface wiring connections between standalone cabinets, conduit
must be installed between cabinets.
Disconnect terminal block plugs from terminal blocks to wire plugs.
UPS System Installation
www.eaton.com/powerquality
4-27
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