APC AP9607 User Manual

22

Until Low Battery shutdown mode is similar to the standard 
operation of the 

UPS

. During a utility failure, the Interface 

Expander allows the 

UPS

 to run on battery until utility 

power is restored, or until the battery is exhausted. If the 
Interface Expander detects a 

UPS

 Low Battery condition, it 

sends a Low Battery signal on all ports for a period of time 
equal to the Low Battery Signal Time and then shuts down 
the 

UPS

.

If utility power returns after the Low Battery timer has 
begun, the Interface Expander will continue the countdown 
and force the UPS to cycle power.

This mode is useful for applications which require maxi-
mum run time.

In Timer shutdown mode, the Interface Expander allows the 
UPS to operate on battery for a user-specified length of time 
before shutting down the 

UPS

If power returns before the timer has run out, the Interface 
Expander returns to On Line status. When the timer runs out 
or when the Interface Expander detects a Low Battery con-
dition in the 

UPS

, the Interface Expander sends a Low 

Battery signal for a period of time equal to the Low battery 
signal time and then shuts down the 

UPS

.

down delay for a time longer than the Interface 
Expander timer setting. Otherwise, if the power 
returns after the server shuts down, the server may 
not restart. To set the shutdown delay, go to Configu-
ration|Event Actions and select UPS On Battery 
from the Event list and Shut Down Server in the 
Action box. Click Options and enter a setting for 
Begin Shutdown Sequence in __ Seconds. Click