User Manual

89
Troubleshooting
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Table 17. Alarms, Notices, and Events
Alarms, Notices, and Events ActionPossible Cause
Bypass AC Over Voltage
(Notice 3)
Intermittent Alarm
The measured voltage on
Bypass has exceeded the upper
voltage limit specification for
bypass operation.
A notification alarm is generated and the
notice is logged.
Only apply this setting when Qualify Bypass is
set to Always and utility is present, but above
the bypass overvoltage range.
Do not apply this setting if a Utility Not
Present alarm is active.
Bypass AC Under Voltage
(Notice 4)
Intermittent Alarm
The measured voltage on
Bypass is less than the upper
voltage limit specification for
bypass operation.
A notification alarm is generated and the
notice is logged.
Only apply this setting when Qualify Bypass is
set to Always and utility is present, but below
the bypass undervoltage range.
Do not apply this setting if a Utility Not
Present alarm is active.
Bypass Under/Over Freq
(Notice 5)
Intermittent Alarm
The measured voltage on
Bypass is out-of-range for either
the upper or lower voltage limit
specification for bypass
operation.
A notification alarm is generated and the
notice is logged.
Only apply this setting when Qualify Bypass is
set to Always and utility is present, but outside
the bypass frequency range.
Do not apply this setting if a Utility Not
Present alarm is active.
Rectifier Input Over Current
(Alarm 26)
Beeping Alarm
The UPS has detected that
rectifier input current limits
have been exceeded.
The UPS transfers to Battery mode if
supporting the load.
Inverter Output Over
Current
(Alarm 27)
Beeping Alarm
The UPS has detected that the
inverter output current limits
have been exceeded.
The UPS transfers to Bypass mode if
supporting the load.
DC Link Over Voltage
(Alarm 28)
Beeping Alarm
The link or rail voltage has
exceeded its upper threshold
limit.
The UPS transfers to Battery mode if
supporting the load.
DC Link Under Voltage
(Alarm 29)
Beeping Alarm
The link or rail voltage has
dropped below its lower
threshold limit.
The UPS transfers to Battery mode if
supporting the load.