Borri E2001 COMPACT - Page 55

Front panel AC-UPS GD 128x64
OMX76014 Rev. A 37
Alarm
A47
BYPASS SWITCH
Description
The bypass/normal switch is in the bypass position
Possible
causes
 The bypass/normal selector is in the bypass position
 Selector auxiliary contact fault
Solutions
1. Move bypass switch
2. Check the selector auxiliary contact is working
3. If the alarm persists, contact our technical support service.
Alarm
A48
RE-TRANSFER BLOCKED
Description The UPS is blocked under the bypass. The inverter static remains
open.
Possible
causes
 There is a multiple transfer of the inverter/bypass and the
bypass/inverter
Solutions
1. Reset and check correct operation of the static
2. If the alarm persists, contact our technical support service.
Alarm
A49
MINIMUM OUTPUT VOLTAGE
Description
The output voltage is under the minimum tolerance threshold.
Possible
causes
 Inverter bridge switched off or faulty
 Control logic malfunction
Solutions
1. If the inverter is off, switch it on
2. If the alarm persists, contact our technical support service.
Alarm
A50
MAXIMUM OUTPUT VOLTAGE
Description
The output voltage is over the maximum tolerance threshold.
Possible
causes
 Control logic malfunction
 Parallel system malfunction
Solutions
1. Contact our technical support service.
Alarm
A51
INVERTER FEEDS LOAD
Description The inverter feeds the load. Alarm active only for OFF-LINE
configurations.
Possible
causes
 Transfer on inverter from bypass switch
 Fault or no emergency mains
Solutions
1. Move bypass switch
2. Check the selector auxiliary contact is working
3. If the alarm persists, contact our technical support service.