The Pqf-Manager User Interface - ABB PQFS Installation, Operation And Maintenance Instructions

Direct Interface
Modbus & PQ-Link interface
Programmable Digital I/O
CT signals
(a) CT signals to different units (master or slave) must be routed through daisy chain principle with
return path.
(b)
If second unit is a slave unit, it will not have a PQF-Manager. If second unit is a master unit, it will
When the filter consists of a master unit only, the customer has to:
−
Wire the CT signals (on a designated terminal),
−
Connect the AC power lines (with or without neutral),
−
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.
All units have their own AC-connection and main contactor protection.
A PQFS active filter system consists of up to 8 units of equal rating. Additional units to
the first master unit may be master or slave units. Slave units do not have a PQF-
Manager.

4.5 The PQF-Manager user interface

All user interaction with the filter is channeled through the PQF-Manager.
In multi-unit filters consisting of only one master, only the master has a PQF-Manager.
In multi-unit filters consisting of more than one master, all the master units have a PQF-
Manager. However, only the PQF-Manager that is connected to the master unit which
18 Hardware description  Manual Power Quality Filter PQFS
User interface
PQF
Manager
(a)
PQF
Manager
(b)
Figure 11: Controller interface diagram of the PQFS active filter
CAN
PQF
Bus
main
controller
CAN bus (1)
CT's
PQF
main
controller
PQF
Power
First
Stage
unit
3∼ AC Out
PQF
Power
Second
Stage
unit
3∼ AC Out