ABB PCS100 UPS-I User Manual page 101

PCS100 UPS-I User Manual
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the required time-out period. This
is detected by the auxiliary
contacts on the pre-charge
contactor inside the Inverter
module.
Contactor The Inverter module pre-charge
Deactivate T/O 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.
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.
FPGA Reset The FPGA has been reset by an
unidentified source.
SCR Not Off The SCR short circuit detection
Timeout hardware in the Utility Disconnect
detected that an SCR did not
open.
Out of Regulation Inverter output voltage out of
Warning regulation.
Out of Regulation Inverter output voltage out of
Error regulation.
Replace the faulty inverter
module.
Check the utility supply.
Check the utility voltage
sense connection and
fuses.
Press Reset. If the fault is
not resolved power down
and restart PCS100 UPS-I.
(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.
No action required.
The module may need to
be replaced.
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