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

Direct Interface
(keypad and LCD)
ModBus & PQFLink Interface
(Through RS232)
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 have a
PQF-Manager.
When the filter consists of a master unit only, the customer has to:
He may also want to wire the communication interface (Modbus or serial communication)
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, e.g. 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 4 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 channelled 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
has the overall control will be active.
User interface
PQF
Manager
(a)
PQF
Manager
Figure 15: Controller interface diagram of the PQFS
· Wire the CT signals (on a designated terminal),
· Prepare the filter for networks of nominal voltage 208-240V (if needed),
· Connect the AC power lines (with or without neutral),
· Set up the installation parameters and user's requirements with the PQF-
Manager.
CAN
PQF
Bus
main
controller
CAN bus (1)
PQF
main
(b)
controller
Figure 16 shows the front side of the PQF-Manager.
Manual Power Quality Filter PQFS ç Hardware description 19
PQF
Power
First
Stage
unit
3~ AC Out (+N)
PQF
Power
Second
Stage
3~ AC Out (+N)
unit