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29User Guide Silcon DP300E Series 480V 400-500kVA
7OA0004 US rev. 02
Alarms
Possible alarm Description Action
39. System is locked in oper.
mode
40 RAM1 memory write error
41. Memory write error
42. Communication to VQ
bypass lost
43. Communication to VQ
output lost
44. Communication to DMU
lost
45. Communication to control-
ler lost
46. Communication to parallel
IF lost
47. External shutdown
accepted
48. DC capacitor charge error
49. Communication to VQ
mains lost
50. Bypass sync error
UPS has attempted 10 times
within 1 min. to switch from
bypass to battery operation
or “High DC warning” has
appeared 10-20 times within
1 min.
Fault in UPS
Fault in UPS
Fault in UPS
Fault in UPS
Fault in UPS
Fault in UPS. Display will
show invalid data for UPS
Fault in UPS
Remote signal for switching
off the UPS accepted – UPS
switches off itself
Fault in DC charge circuit
Fault in UPS
The UPS cannot synchronize
to the bypass utility
If the system is locked in
bypass operation and the
alarm “Inverter voltage
error” exists in the alarm
stack do not try to unlock
the operations mode lock
but - call for assistance!
Call for assistance
Call for assistance
Call for assistance
Call for assistance
Call for assistance
Call for assistance
Call for assistance
–
Do NOT close
external MCCB due to
preventing damage of
UPS system.
Call for assistance
Call for assistance
Check if phase rota-
tion of bypass voltage
is correct - if OK, call
for assistance
NOTE:
Utility = Mains