58 Electrical design and installation
Manual Power Quality Filter PQFS
stop command to the filter too. This section gives an example of how the cabling has to
be done on the filter side.
Any of the two digital inputs on the PQF-Manager (Cf.
) can be used to cable
the remote control functionality. The electrical requirements of the digital inputs are
given in
(Filter characteristics section).
implement the remote control functionality on Digital Input 1.
Switch controlled
by external process
24 Vdc
external
power
supply
(b)
S
+
-
1
(a)
2
(a)
+
-
PQF-Manager
Digital input 1
(15-24Vdc)
Remarks:
(a)
Left hand terminal block when looking from rear, counting from top to bottom
(b)
Acceptable power supply range: 15Vdc-24 Vdc, driving current 13mA@24Vdc
Figure 41: Implementation of remote control functionality on Digital Input 1 of
the PQF-Manager
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.
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 then be restored
Then, the PQF-Manager has to be used to associate the remote control functionality with
Digital Input 1. This is done by going to the digital input setup menu and selecting
‘Remote ON’ for digital input 1. When this is done the filter will switch on when the switch
S shown in
is closed and the filter will switch off when the switch S is opened.
Refer to
Section 7.9.1.4
for guidelines on how to navigate to the digital input setup menu.
In a multi-master arrangement, the master that has the control over the system (i.e. the
master which is operational and which has the lowest address) will monitor the digital
inputs. Therefore, in order to obtain full redundancy with filters consisting of more than
