To modify the user settings, you need to enter the level 2 password. For the
default passwords, see Section 7.2.5.1 User settings.
7.4 System control instructions
7.4.1 Starting the UPS system in the double conversion mode
The UPS system can consist of a single UPS or several parallel UPSs. UPSs
with their MOB open are not considered as part of the system.
To start the UPS system:
1. Open the UPS front door.
2. Make sure that the rectifier input switch S1 closed.
3. Make sure that the battery breaker CB1 is closed.
4. Close the UPS front door.
5. Close the UPS input feeder circuit breaker.
6. Close the UPS bypass input feeder circuit breaker.
7. Wait for the UPS control panel display to become active and to indicate logic
power.
8. Repeat steps 1-7 for each individual UPS in the system.
9. In the home screen, press Controls.
The System controls screen appears.
10. In the System controls screen, make sure that the system status is
SHUTDOWN.
11. In the System controls screen, press the Go online button.
If Auto Bypass is enabled (factory default), the critical load is immediately
supplied by the bypass source, in the bypass mode, until the inverter turns
on and the UPS transfers to the double conversion mode. The status
indicator on the UPS control panel indicates that the UPS is in the bypass
mode. If auto bypass is not enabled, the UPS output remains off until the
UPS system transfers to double conversion mode.
12. Wait for the following messages to appear sequentially on the System
controls screen:
STARTING
ONLINE
The UPS system is now operating in the double conversion mode. The green
status indicator for normal operation is illuminated in all the UPSs in the system.
© Eaton Corporation plc 2020. All rights reserved. Revision: 006 Document ID: P-164000493 95 (126)
Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide
To Next Page
Loading...
Need help?
General
