UPS operations  42 
  NOTE: If the On and Off buttons are simultaneously pressed, the Off button has priority over the 
On button. 
 
  
Button  Assertion 
time 
Audible alarm  Mode before 
assertion 
Utility 
present ? 
Action 
On 
0.5 seconds  Every 0.5 seconds 
until the button is 
released 
Standby  Yes  Energizes the load and 
resets the bypass entry count 
to 0 
     
Operate  Yes  Resets the bypass entry count 
to 0 
     
Auto-Bypass  Yes  Clears the UPS On audible 
alarms, resets the bypass 
entry count to 0, and 
attempts to transfer to 
Operate mode 
     
Converter Off  Yes  Clears the UPS On audible 
alarms, resets the bypass 
entry count to 0, and 
attempts to transfer to 
Operate mode 
Off 
3 seconds  Every 0.5 seconds 
until the button is 
released 
Operate  Yes  Transfers to Standby mode, 
and power to the load 
ceases 
     
     
Battery  No  Powers down the UPS, and 
power to the load ceases 
     
Auto-bypass  Yes or No  Transfers to Standby mode 
or Converter Off mode, and 
power to the load ceases 
Self Test 
0.5 seconds 
 
Any  Yes or No  Silences audible alarms after 
0.5 seconds 
 
3 seconds  Continuously  Any  Yes or No  Initiates a self-test 
Battery Start 
0.5 seconds 
 
Any  Yes or No  No action 
Battery Start 
and On 
3 seconds  Continuously  UPS off  No  Transfers to battery power, 
and begins powering the 
load 
On and Self 
Test 
3 seconds  Continuously  Any  Yes or No  Enters or exits Configuration 
mode 
 
 
Configuring the UPS 
The UPS automatically detects the number of ERMs connected. 
In Configure mode, the LED front panel display changes function to enable modification of the UPS 
parameters. Each LED is associated with a different parameter. 
  
Available settings  Parameter   Associated LED  Explanation (when LED is illuminated) 
Nominal voltage 
setting 
100/204 Nom  Self Test  Nominal output voltage is 100 V for a low 
voltage model and 204 V for a high voltage 
model