5. Self-test: Use the self-test to verify both the operation of the UPS and the
condition of the battery. In normal utility power, push the Power ON/OFF/Test
button for less than one second; the UPS will perform a self-test. During the
self-test, the UPS runs in Backup Mode. If the UPS passes the self-test, it
returns to "Ac Input Normal" operation.
6. Remote ON/OFF: To ensure the remote ON/OFF function, connect a remote
push-button switch in series with 5–30 V dc voltage source to the ON/OFF
terminal as shown below.
5~30 Vdc
REMOTE
ON/OFF
The remote switch provides the same functions as the front panel switch
including ON/OFF/Test functions with Green Mode enabled or disabled. If the
Green Mode is not needed, a remote toggle switch can be used.
1. ON Battery (slow beeping): When in ON Battery Mode, the yellow LED illumi-
nates and the UPS sounds an audible alarm. The alarm stops when the UPS
returns to Ac Input Normal operation.
2. Low Battery (rapid beeping): In ON Battery Mode when the battery energy
runs low, the UPS beeps rapidly until the UPS shuts down from battery
exhaustion or returns to Ac Input Normal operation.
3. Overload (continuous alarm): When the UPS is overloaded (the connected
loads exceed the maximum rated capacity), the UPS sounds a continuous
alarm and LED to warn of an overload condition. Reduce the load to eliminate
the overload.
English version
Remote Push
Button Switch
7.0 Battery Overload Alarms
SDU Series Instruction Manual • 10