ABB PQFM - Page 144

144 The PQF-Manager user interface  Manual Power Quality Filter PQFM
DC Bot over voltage
The DC over voltage protection of the capacitors in the negative
stack has been triggered.
DC under voltage (SW)
The DC software under voltage protection has been triggered.
IGBT check cooling
The software IGBT temperature prote
ction has been triggered.
IGBT permanent
The IGBT modules report an error that cannot be cleared by the
system. This error can be due to peak over current or too low
control voltage for the IGBT drivers.
IGBT temporary
The IGBT modules report a transient
error that could be cleared by
the system. This error can be due to peak over current or too low
control voltage for the IGBT drivers.
Loss of phase
The system has detected a loss of supply on at least one phase.
No synchronization
The system cannot syn
chronize on to the network.
SPI Error
The DSP has received no response after its request on the SPI port.
Bad Sequence
The DSP has detected an inadequate behavior in the sequence.
Out of mains freq.
Limit
The system has detected that the network frequen
cy is out of
range.
Over voltage RMS
The RMS value of the supply voltage is higher than the acceptable
maximum value.
Over volt. Transient
(SW)
The software transient over voltage protection has been triggered.
Over current RMS
The system has detected R
MS over current.
Over current peak
(SW)
The software peak current protection has been triggered.
Preload problem
The DC capacitors could not be preloaded. The voltage increase on
the DC capacitors during the preload phase is not high enough.
Unbalanced
supply
The supply imbalance is out of range.
Under voltage RMS
The RMS value of the supply voltage is lower than the acceptable
minimum value.
Unstable mains frequ.
The network frequency is varying too fast.
Wrong phase rotation
The filter is fed by a s
upply system, which has the wrong phase
rotation.
SPI Timeout
Internal system error
Mismatch between
units
Different units in a filter system have different settings (e.g. 3
-
wire
and 4-wire setting) or are connected in a different way.
Remark: Maximum limits for certain parameters are given in the detailed manuals
Table 54 gives an overview of the faults that can be reported by the µcontroller.
Table 54: Overview of the faults that can be reported by the µcontroller
µ
controller fault message
Description
Com. Problem 1 (CAN bus)
Communication problem between different units in a multi
-
unit filter arrangement
Com. Problem (RS
-
232)
Serial communication problem between the main controller
board and an external PC
Corrupted DSP code
Internal system error