PCS100 UPS-I
User Manual
101
the required time-out period. This
is detected by the auxiliary
contacts on the pre-charge
contactor inside the Inverter
module.
22
I
F
Contactor
Deactivate T/O
The Inverter module pre-charge
contactor has not closed within
the required time-out period. This
is detected by the auxiliary
contacts on the pre-charge
contactor inside the Inverter
module.
Replace the faulty inverter
module.
27
S
W
PLL Unlocked
This warning is displayed when:
(1) The supply to the PCS100 UPS-
I is switched off.
(2) The Phase Lock Loop is not
locked to the input voltage.
(3) There was a +/- 20% frequency
error.
Check the utility supply.
Check the utility voltage
sense connection and
fuses.
31
S, I
F
FPGA Reset
The FPGA has been reset by an
unidentified source.
Press Reset. If the fault is
not resolved power down
and restart PCS100 UPS-I.
35
S
F
SCR Not Off
Timeout
The SCR short circuit detection
hardware in the Utility Disconnect
detected that an SCR did not
open.
(1) Check the SCRs have no
short circuit. (2) Ensure
that the PCS100 UPS-I is
not mechanically
bypassed.
(3) Check connections
to/from the SCR short
circuit detector in the
Utility Disconnect.
(4) Check the cables
connecting to P42 on
0390-643.
(5) Check the cables
making their way back
along P150 from 0390-643
to 0390-642.
(6) Check the connection
between P189 on 0390-656
and P169 pins 7-8 on
0390P646/648.
38
I
W
Out of Regulation
Warning
Inverter output voltage out of
regulation.
No action required.
39
I
F
Out of Regulation
Error
Inverter output voltage out of
regulation.
The module may need to
be replaced.