ABB PQFM Instruction Manual page 21

Selection of main filter settings or auxiliary filter settings (e.g. different filter
-
settings for the day and for the night)
The PQF-Manager is used to associate the required functionality with the chosen digital
input. The digital inputs can also be disabled.
WARNING: If a function is assigned to a digital input, the same function must never be
assigned to the other digital input. Otherwise the filter may behave erratically.
The external voltage source needed to drive the digital inputs has to comply with the
following characteristics:
- Vlow: 0 Vdc
- Vhigh: 15-24 Vdc
- Driving current: 13 mA @ 24 Vdc (Rint = 1.88 kW)
The digital inputs have free of potential contacts (opto-isolated).
When implementing any of the functions described above, please note that according to
the setup done with the PQF-Manager for the input considered, the filter may behave
differently. Table 8 below gives an overview of the possible settings and the resulting
filter behavior.
Table 8: Overview of possible digital input settings and resulting filter behavior
Function
Remote control
PQF-Manager setup for digital input: Remote
ON (a)
Selection of main/auxiliary settings
PQF-Manager setup for digital input: Activ.
Main (a)
Selection of main/auxiliary settings
PQF-Manager setup for digital input: Activ.
Aux. (a)
Local ON/OFF buttons
PQF-Manager setup for digital input: Edge
ON
(a) (b)
Local ON/OFF buttons
PQF-Manager setup for digital input: Edge
OFF (a) (b)
Vlow applied
Vhigh applied to digital
to digital
input
input
Filter off Filter on
Auxiliary Main settings are used
settings are
used
Auxiliary settings are used
Main settings
are used
No effect Filter starts on rising edge
No effect Filter stops on rising edge
Manual Power Quality Filter PQFM ç Hardware description 21