Installation guide

UPS 40 – 160 kVA, 400V 50/60 Hz output
User’s and Installation Guide
1023294
Revision C
45
7.9 Using the LOAD OFF Pushbutton
The LOAD OFF pushbutton from the Main menu bar or the System Controls screen menu bar
initiates an UPS Load Off. This pushbutton can be pressed to control the UPS output. The UPS
LOAD OFF pushbutton de-energizes the critical load and powers down the UPS.
The UPS (including Bypass) remains off until restarted.
To Use the LOAD OFF Pushbutton:
1. Press the LOAD OFFpushbutton.
The Load Off screen appears, providing a choice to proceed with the shutdown or to
abort the shutdown.
Note!
All power to the critical load is lost when the LOAD OFF is selected in the following
step. You should use this feature only when you want to de-energise the critical load.
2. To shut down the UPS, press LOAD OFFfrom the Load Off screen menu bar, and hold
for three seconds. To abort the shutdown, press CANCEL.
When LOAD OFF is selected and held for three seconds, the input, output, and bypass
backfeed contactors open, the battery breaker or disconnect is tripped, and the Power
Module is turned off.
Note!
Do not attempt to restart the system after Load Off until the cause of the shutdown has
been identified and cleared.
3. To restart the UPS after pressing the LOAD OFFpushbutton, follow the procedure, in
paragraphs 7.1 or 7.2.
7.10 Using the REMOTE EMERGENCY POWER OFF Switch
An UPS Emergency Power Off is initiated by Remote Emergency Power OFF (REPO) pushbutton
switch. In an emergency, you can use this switch to control the UPS output. The REPO switch de-
energises the critical load and powers down the UPS immediately, without asking for verification.
The UPS, including Bypass, remains off until restarted.
To Use the REPO Switch:
Note!
All power to the critical load is lost when the REPO switch is activated in the following
step. You should use this feature only when you want to de-energise the critical load.
The following instructions are for the Powerware supplied REPO switch. If a customer
supplied REPO switch is used it may not activate in the same manner. If this is the case,
refer to the operating instructions provided with the switch.