Manual Power Quality Filter PQFM
The PQF-Manager user interface 101
Table 42: ‘Start, stop and fault acknowledgement’ menu functionality according to the filter
status
Filter status
Menu display
Pushing results
in…
Filter stopped, no critical error
present (i.e. ‘normal’ stop
condition)
PQF START
Starting the filter
(a) (b)
Filter running, no critical error
present (i.e. ‘normal’ running
condition)
PQF STOP
Stopping the filter
(a) (b)
Filter stopped on critical fault
ACK. FAULT
Acknowledging the fault
(a) (b)
Filter controlled by remote
control
PQF START or
PQF STOP or
ACK. FAULT
No action on filter behavior
Display shows message that filter is
controlled by digital input
Remark:
(a)
After pushing this button, there is always a validation phase.
(b)
In multi-master filter units, this function is available on the master unit that has the control
over the system.
In a multi-unit system, the PQF start, stop and fault acknowledgement menu will only
switch to the ACK. FAULT message when the complete filter system is shut down.
If one of the units of a multi-unit system is shut down due to a fault, this fault can be
acknowledged and reset in the PQF Monitoring menu [/Welcome/PQF
Monitoring/Status of module]). Note that in the reset process the whole system will be
shut down. If the fault of the unit cannot be reset, the ACK. FAULT message will be
displayed again for the unit considered. The filter system can be restarted at any time
and the units that are available will operate normally.
Acknowledging of a fault which resulted in a complete filter system shut down has two
possible consequences:
−
If the fault is permanent (e.g. permanent network under voltage due to phase
loss), it cannot be cleared and the message ‘ACK. FAULT’ will remain on the
display. In this case the cause of the problem has to be identified and removed
before the filter can be restarted.
−
If the fault is not present anymore when the ‘ACK. FAULT’ command is given, the
menu will change into ‘PQF START’ to indicate that the filter can be restarted.
Fault analysis can be done by consulting the ‘PQF Monitoring’ menu [/Welcome/PQF
Monitoring]. For more information on the ‘PQF monitoring’ menu, refer to
Section 7.10
If the filter is set up for remote control operation, the local start/stop command has no
effect. Disable the digital inputs to override the remote control
[/Welcome/Settings/Customer set./Digital inputs].