Unipower Aspiro 1U - Page 35

Page 35
POWERING TECHNOLOGY
Document No. M00035-MAN rev. 3a
aspiro1u_m35-man-rev3a-0417.indd
Fault Possible Cause Suggestion/Solution
Mains Error
AC supply OFF on one rectier in the
system with one plugged in rectier.
AC supply OFF on at least two
rectiers in the system with minimum
two plugged in rectiers.
Verify that the AC input breaker is
ON.
Verify AC input connection.
AC Low Voltage
AC voltage drops below the set limit. Verify the Low AC voltage limit
setting.
Verify AC Input connection.
Verify AC Input voltage.
AC High
Voltage
AC voltage rises above the set limit. Verify the High AC voltage limit.
Verify the AC Input voltage.
Module Failure
Faulty module.
AC OFF on a single rectier (if more
than one rectier is installed).
Rectier current sharing fault.
Low DC output voltage, overvoltage
shutdown, module fan failure, module
is overheated.
Check if module sends alarm ag.
Verify the AC voltage to the failed
module.
Re-insert the faulty module, wait for
30 seconds
Replace the faulty module.
Urgent Module
Failure
More than one rectier is reporting
Module failure.
See Module failure alarm.
High Load
Faulty module .
Rectier load current exceeds the set
High load limit [%].
Compare the load current with
installed rectier capacity.
Add a rectier or reduce load.
Verify the High load limit setting.
Replace the faulty module.
Overvoltage
Shutdown
Faulty module Re-insert the module, wait for 5
minutes.
Replace the faulty module.
Load/Battery
Disconnection
System voltage drops below the set
limit.
System shutdown.
Check the battery condition.
Check the AC mains connection.
Check the input breaker.
Check the rectier modules.