Manual Power Quality Filter PQFS Electrical design and installation 69
− The second approach is to use one digital input for both the start function and
the stop function. This leaves the other digital input available for the
implementation of other functions.
Table 31 shows the PQF-Manager setup for the input considered and the resulting
effect when applying voltage to this input.
Table 31: Filter behavior as a function of the PQF-Manager settings for local start/stop and
using 1 digital input
digital input
input
Vhigh applied to digital input
Edge ON/OFF No effect Filter starts on first rising edge, stops
on second rising edge, etc
Remark: Vlow = 0 Vdc, Vhigh = 15-24 Vdc
Refer to Section 7.9.1.4 for guidelines on how to set up the digital inputs
according to the function required.
The electrical requirements of the digital inputs are as discussed in Section 4.5.
Figure 48 shows a cabling diagram for implementing a start function and a stop
function on the first digital input.
External start/stop
pus
h button
Digital input 1
(15-24Vdc)
Remark:
(a)
Left hand terminal block when looking from rear, counting from top to bottom
Figure 48: Cabling diagram for implementing start and stop on digital input 1
Once the cabling has been finished:
− The auxiliary fuse box may be closed
− The filter top cover may be replaced including the connection of the PQF-Manager
to the master unit
− The power to the filter may be restored
Remarks:
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