Rockwell Automation 1609-U500 Industrial Uninterruptible Power Supply User Manual
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Troubleshooting
All LEDs are off and the UPS is wired to input utility power
The UPS is shut down or the battery is 
discharged from an extended outage.
None: The UPS will restart automatically when utility power is restored and 
the battery has a sufficient charge.
The Overload LED is illuminated and the UPS emits a sustained alarm tone
The UPS is overloaded.
The connected equipment exceeds the specified “maximum load” as defined 
in Specifications listed on the rating label located on the UPS.
The alarm remains on until the overload is removed. Disconnect nonessential 
equipment from the UPS to eliminate the overload condition.
The UPS continues to supply power as long as it is online and the circuit 
breaker does not trip; the UPS will not provide power from batteries in the 
event of a utility voltage interruption.
The Replace Battery/Battery Disconnected LED is illuminated
The Replace Battery/Battery 
Disconnected LED flashes and a short 
beep is emitted every two seconds to 
indicate the battery is disconnected.
Check that the battery connectors are fully engaged.
Weak battery
Allow the battery to recharge for 24 hours and perform a self-test. If the 
problem persists after recharging, replace the battery.
Failure of a battery self-test: Replace 
Battery/Battery Disconnected LED 
illuminates and the UPS emits short 
beeps for one minute. The UPS repeats 
the alarm every five hours.
Allow the battery to recharge for 24 hours. Perform the self-test procedure to 
confirm the replace battery condition. The alarm stops and the LED clears if 
the battery passes the self-test.
If the battery fails again, it must be replaced. The connected equipment is 
unaffected.
The input circuit breaker trips
The connected equipment exceeds the 
specified “maximum load” as defined 
in Specifications listed on the rating 
label located on the UPS. 
Unplug all nonessential equipment from the UPS.
Reset the circuit breaker.
The AVR Boost or AVR Trim LEDs are illuminated
The system is experiencing very high or 
low utility voltage.
Have a qualified service personnel check your facility for electrical 
problems. If the problem persists, contact the utility company for further 
assistance.
Problem and/or Possible Cause
Solution