Eaton 93PM-50-1 - Eaton 93 PM UPS Oneline Schematics

Eaton 93PM Emergency Lighting UPS (50 kW, 480V Three and Four-Wire UL 924) Installation and Operation Manual P-164000569—Rev 03 51
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If ESS is enabled and the UPS will be fed by a site generator at any time, the On Generator building alarm must
be wired and configured to a Building Alarm Input. Wiring the On Generator sensing circuit to a building alarm
allows the UPS to optimize its operation with the generator by transferring the UPS from ESS mode to Normal
(double conversion) mode.
NOTE 1 An UPS building alarm input is used to indicate On Generator.
NOTE 2 Any pair of unused building alarm terminals may be used for On Generator connections.
NOTE 3 Program the building alarm to read On Generator and for either Normally Open (default)
or Normally Closed as required by the generator sensing output.
NOTE 4 If installing interface wiring connections between standalone cabinets, conduit must be
installed between cabinets.
NOTE 5 Disconnect terminal block plugs from terminal blocks to wire plugs.
To Install wiring:
1. Verify the UPS system is turned off and all power sources are removed. See
Chapter 7 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 interface terminals from the bottom of the UPS, proceed to Step 8; otherwise, proceed to
Step 4.
4. Top Entry Wiring. Remove the top interface entry conduit landing plates to drill or punch holes (see
Figure 15).
5. Reinstall the interface entry plates and install the conduit.
6. Route the UPS building alarm interface wiring through the top interface entry conduit landing plates to the
UPS building alarm terminals. See Figure 15 for wiring access information, and Figure 20 and Figure 21 for
UPS interface terminal locations.
7. Proceed to Step 13.
8. Bottom Entry Wiring. Remove the bottom interface entry conduit landing plates to drill or punch holes
(see Figure 22).
9. Reinstall the interface entry plates and install the conduit.
10. Route the UPS building alarm interface wiring through the bottom interface entry conduit landing plates to
the bottom access interface wiring channel along the inside of the front door (see Figure 22).
11. Route the wiring along the interface wiring channel (see Figure 22) to the UPS building alarm terminals.
See Figure 20 and Figure 21 for UPS interface terminal locations.
12. Secure the wiring to the wire tie anchors provided (see Figure 23) using Zip ties.
13. Connect the building alarm interface wiring to the building alarm terminals. See paragraph
3.2.3 UPS System Interface Wiring Preparation and Table 10 for wiring and termination requirements, and
Figure 24 for terminal assignments.
14. If wiring Minislot connections, proceed to paragraph 4.7.5 Installing Minislot Interface Connections;
otherwise, proceed to Step 15.
15. Close the UPS outside door and secure the latch.
UPS System Installation