Eaton BladeUPS User Manual page 93

13. For a parallel system not previously shut down, verify that any alarms related to reconfiguring the CAN
Bridge Cards have cleared.
14. Install a redundant signal cable between the For Parallel Use Only and Standalone/Parallel terminals on
each UPS as shown in Figure 64 on page 79.
Be sure to check correct polarity when installing the cable.
If polarity or wiring is not correct, the parallel system does not operate normally. For example,
when shutting down one UPS, the remaining UPS transfers the load to bypass instead of
supporting the load. Verify that all wiring is correct for proper operation.
15. Remove the Standalone/Parallel terminal block connector from the last UPS (UPS 3 in Figure 64 on
page 79).
16. If you left the UPSs unattached to the rack, secure the front and rear of each UPS as described in Step 14
and Step 15 on page 68.
17 . If your rack has conductors for grounding or bonding of ungrounded metal parts, connect the ground cable
(not included) to the ground bonding screw. See Figure 60 on page 74 for the location of the ground
bonding screw.
18. You can install an optional REPO circuit that will shut down the entire parallel system using a single
switch. See "Remote Emergency Power-off" on page 112 to install the REPO switch before powering on
the parallel system.
19. Connect the parallel input cord from each paralleled UPS as shown in Figure 67 on page 84:
Loosen the two screws on the plug retainer and slide the plug retainer out.
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Gently loop and twist the parallel input cords as shown to minimize stress on the cords. The loop and
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twist for each cord may vary depending on configuration and strain relief to the BladeUPS Bar in the
rack.
Insert the parallel input cord into the socket. The plug is fully seated when the plug latches snap into
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place.
Slide the plug retainer back in and tighten the screws.
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NOTE The plug retainer prevents the plug from being inadvertently unplugged.
20. If the BladeUPS system was shut down to add the new modules, continue to "Parallel System Initial
Startup" on page 89. If the BladeUPS system remained operational, continue with Step 21.
21. Switch the new UPS input circuit breaker to the ON (
22. Wait for the UPS front panel display to illuminate. The
23. Check the UPS front panel display for active alarms or notices (other than "Batteries Disconnected").
Resolve any active alarms before continuing. See "Service and Troubleshooting" on page 131.
24. Switch the UPS battery circuit breaker to the ON (
25. If optional EBMs are installed, switch all EBM battery circuit breakers to the ON (
26. Verify that the "Batteries Disconnected" alarm has cleared. Verify that no other alarms appear on the UPS
front panel display.
Eaton BladeUPS 5.1 kVA to 60 kVA (N+1) User's Guide 164201649—Rev 9 www.eaton.com/powerquality
Standard System Installation
CAUTION
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) position.
indicator flashes on the UPS.
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) position.
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) position.
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