External Communication With Pqf - ABB PQFM Instruction Manual

WARNING: Before cabling any of the circuits discussed below, switch off the power
supply to the filter. When the filter has already been installed on site, this is preferably
done by opening the protection system located just upstream of the filter and opening
the auxiliary fuse box present in the filter. Wait at least 25 minutes to allow for the DC
capacitors to discharge when the filter has been connected to the network before.
Failure to do so may result in the lethal injury or death.

6.13.1 External communication with PQF

The PQF Filter communicates with a computer in three possible ways:
- Using our in-house communication software called PQ-Link (TCP/IP-USB)
- Using any communication system supporting the Modbus TCP protocol
- Using any communication system supporting the Modbus RTU protocol
While using the PQ-Link software, the computer can be connected either through the
Ethernet port using standard cable (RJ45) or through the USB port using standard USB
cable.
Figure 67: Ethernet cable & USB cable for PC-filter interconnection
For communication over Modbus TCP, the computer can be connected through the
Ethernet port using standard cable (RJ45).
For communication over Modbus RTU, we need a RS485 Modbus adapter (as shown in
Figure 68). This adapter has to be connected to the rear side of the PQF-Manager. This
is done by inserting the adapter plug firmly in the dedicated socket.
location at the rear of the PQF-Manager where the plug has to be inserted. The user can
use custom software where the standard Modbus RTU protocol is implemented or any
other standard software (OPC server, SCADA ...).
Figure 68: Location at rear of PQF-Manager where the serial communication
88 Electrical design and installation ç Manual Power Quality Filter PQFM
cable has to be inserted
Figure 68 shows the