Manual Power Quality Filter PQFM
Hardware description 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 k
Ω
)
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.
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
Vlow applied
to digital
input
Vhigh applied to digital
input
Remote control
PQF-Manager setup for digital input: Remote
ON
(a)
Filter off
Filter on
Selection of main/auxiliary settings
PQF-Manager setup for digital input: Activ.
Main
(a)
Auxiliary
settings are
used
Main settings are used
Selection of main/auxiliary settings
PQF-Manager setup for digital input: Activ.
Aux.
(a)
Main settings
are used
Auxiliary settings are used
Local ON/OFF buttons
PQF-Manager setup for digital input: Edge
ON
(a) (b)
No effect
Filter starts on rising edge
Local ON/OFF buttons
PQF-Manager setup for digital input: Edge
OFF
(a) (b)
No effect
Filter stops on rising edge