Powerware 9315s - Manual (Page 95)

10--5 Powerware 9315 Parallel Capacity/Redundant System with PHP SSBM
164201373 Rev. A 092402
10.2.6 Restarting a Single UPM
1. On UPM, close CB1.
2. Observe UPM monitor screen becoming active as an indication of logic power.
3. Verify UPM is shown on the SSBM mimic screen.
4. On UPM, set BATTERY switch to NORMAL.
5. On UPM, set MODE switch to NORMAL.
6. On UPM, turn the START switch to the right for 2 seconds and then release.
7. When UPM Battery Disconnected alarm and notification is received, close UPM
battery disconnect breaker.
8. UPM, will automatically return to online condition.
The rectifier turns on, then the inverter turns on. When the inverter reaches full
voltage, K3 closes. Logic power is supplied and the UPM is ready to supply power
to the critical load. It takes less than 1 minute for the UPM to achieve Normal mode.
9. On SSBM mimic screen, check for presence of UPM.
10.2.7 Using the UPM LOAD OFF Pushbutton
NOTE: The UPM LOAD OFF pushbutton will only interrupt the ability for that module
to deliver power to the critical bus. The redundant modules will continue to
support the critical load. To remove all power from the critical load, use the
SSBM EMERGENCY UPM OFF pushbutton (optional setup) or the optional
REMOTE EMERGENCY POWER OFF (REPO) pushbutton.
Load Off is initiated by the covered, red UPM LOAD OFF pushbutton on the
Monitor Panel. This pushbutton is protected by a clear plastic shield to prevent
accidental activation. In an emergency, you can press this pushbutton to
instantaneously open the input breaker and interrupt UPM output. The UPM
remains locked off until you reset the LOAD OFF pushbutton.
WARNING:
All power to the critical load is lost when you press this pushbutton. Use this
feature only in an emergency or when you want to de-energize the critical load.
To restart the UPS after pressing the LOAD OFF pushbutton, follow the procedure
“Resetting the UPM after Load Off” of this chapter before starting the UPS.
NOTE: The UPM Remote Emergency Load Off option functions the same way as the
LOAD OFF pushbutton on the Monitor Panel.