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– Wire the CT signals (on a designated terminal).
– Adapt the auxiliary transformer tap settings to the network voltage.
– Connect the AC power lines and earth connection.
– Set up the installation parameters and user's requirements with the PQF-Manager.
He may also want to wire the communication interface (Modbus or Ethernet) and the programmable digital I/O (e.g.
alarm contact, remote control).
When a second unit is added, it is connected to the first enclosure by means of a CAN bus communication link (1). In
addition, the CT measurements have to be supplied to each unit, i.e. through a daisy chain link with return path. Also,
the earth points of the different units have to be interconnected.
All slave units have their own AC-connection and breaker (or contactor) protection.
A PQF active filter system consists of up to 8 units. Additional units to the first master unit may be master or slave
units. Slave units do not have a PQF-Manager.
The active filter master panel door contains the PQF-Manager and a protective grid connected to the filter frame. At
the bottom of the protective grid a cooling fan is mounted.
Figure 13
shows the PQF main controller board parts.
The designation of the principal terminals is given in the table
Item
Description
43
System connector: 24 V power supply to control board
44
CAN bus connection from previous filter unit
45
CAN bus connection to next filter unit
46
System connector: Power supply and CAN communication to PQF Manager
47
System connector: 230 V power supply to control board
48
System connector: Preload control
49
System connector: Main breaker closing signal (PQFI) – main contactor control
(PQFM/S)
50
System connector: Main breaker opening signal (PQFI) – not used for PQFM/S
51
System connector: fan control
52
System connector: monitoring temperature of PWM and line reactors
53
System connector: Spare
54
System connector: Coming from CT terminal X21 (internal)
55
System connector: Supply voltage and DC link voltage measurement
56-57-58
System connectors: Control of IGBT-modules (PQFI)
59
System connector: Control of IGBT-modules (PQFM/S)
60
Voltage selector DIP-switch: not used in PQFS (single voltage)
STATUS
Approved
Table 8: PQF main controller board description (
SECURITY LEVEL
Public
below.
Figure 13
(a)
DOCUMENT ID
9AKK107045A4703
Q UICK STA RT-UP G UI DE
)
Circuit diagram
designation
P2
P20
P21
P4
P3
P19
P18
P17
P16
P25
P7
P5
P6
P9, P10, P11
P12
REV.
LANG.
PAGE
D
en
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