Fault codes and software
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90
4
F8
Sys-
tem
fault
S1 1=Power 1=Unit
3=U
phase
4=V
phase
5=W
phase
1 = Unit, inform
that the case is
big unit (FR9 -
FR14). The fault
order is always
U, V, W.
1. Disturbance. Reset
the unit and try again.
2. IF there is a star cou-
pler in the unit, check
the fibre connections
and phase order.
3. Driver board or IGBT
broken.
4. FR9-FR14: includes
not star coupler, ASIC
board (VB00451) bro-
ken.
5. FR1-FR8: control
board broken.
6. FR1-FR8: if the
boards VB00449/
VB00450 in use, failure
might be there.
S2 4=Con-
trol
2=Board Microprocessor
watchdog fail-
ure in the ASIC
circuit.
Failure has been dis-
ablerd, but if it appears
anyway:
1. Check, if the failure is
recursive.
2. Check the ground-
ings.
3. Reload the software.
4. Change the control
board
S3 4=Con-
trol
2 =
Board
FR8-FR14 units
which includes
adapter board
VB00449/
VB00450. Vacon
bus watchdog
failure in the
unit where is not
any Vacon bus
Failure has been dis-
ablerd, but if it appears
anyway:
1. Check, if the failure is
recursive.
2. Check the ground-
ings.
3. Change the control
board
TABLE 16.
System software fault codes
Code Sub
code
Module Sub
module
Explanation Fault mode
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