User’s Manual
32
UPS EVO DSP TT
Alarm
Possible Cause
Action to solve
VSEC NOT OK
The UPS may not start up yet.
This alarm is permanent if the
UPS is intended to be started with
the Bypass blocked or when the
Bypass mains is not in specified
limits.
-Make sure that all circuit breakers are
“ON”/“1”.
-Check if there is any other alarms and apply
the related suggestions
-Examine the preferences, check the mains
voltages
-Read the "Operating Modes" section of the
manual.
-Determine if the combination of line voltages
and preferences does inhibit the UPS
operation.
The UPS may have stopped to feed
the load because the combination
of the mains conditions and the
user preferences made from the
“COMMANDS” menu does not allow
the UPS to work in any of the
operating modes (e.g. if Inverter
is disabled and both input and
Bypass mains voltages are not
acceptable or if the Rectifier is
disabled when the Bypass voltage
is not in specified limits or
batteries are discharged during a
prolonged outage).
The Output circuit breaker is
“OFF”/“0”.
INP VOL HIGH
Input Line/Neutral voltage is
higher than its upper limit.
Check if the mains voltage is in specified
limits.
INP VOL LOW
Input Line/Neutral voltage is
lower than its lower limit.
INP SYN FAIL
Frequency of mains voltage is
beyond the frequency range for
normal operation or mains voltage
is very low.
Check if the mains voltage is in specified
limits.
INP SEQ FAIL
Phase sequence of input mains
voltages is not OK.
Phase sequence of the mains input shall be
changed. Consult Technical Service.
REC TMP HIGH
Rectifier temperature is very high.
-Measure the ambient temperature near UPS.
-Make sure that the temperature is in specified
limits.
-Check if the fans are running.
REC OVERLOAD
RMS current drawn from any of
the input lines exceeds its nominal
value.
Check if there is an Overload and remove the
excessive load.
VDC HIGH
Any of the DC bus voltages is
higher than its upper limit.
Consult Technical Service.
VDC LOW
Any of the DC bus voltages is
lower than its lower limit
Means that the batteries had
discharged. It is removed when
the Rectifier resets.
If you encounter this alarm during start-up,
check if the Inrush circuit breaker is
“ON”/“1”.
Charge the batteries, perform Battery Test and
check if the alarm has removed.
REC BLCK
Rectifier operation is
automatically stopped due to a
fault.
Consult Technical Service.
Summary of Contents for EVO DSP TM
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