Electrical Connections Of Filter Options And Accessories; External Communication With Pqf - ABB PQFS Installation, Operation And Maintenance Instructions

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The implementation of local start/stop buttons does not inhibit the usage of the
start/stop function on the PQF-Manager.
−
When remote control functionality is implemented (cf.
time as local start/stop buttons, the remote control has priority over the local
start/stop buttons. When the local start/stop command has to be given,
deactivate first the remote control functionality by navigating with the
PQF-Manager to the digital input setup menu and setting the digital input
associated with the remote control to 'Disabled'.
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Note that in a multi-unit filter system in which more than one master system is
present, the digital inputs of all masters have to be set up and cabled in the same
way to obtain full redundancy.

6.13 Electrical connections of filter options and accessories

Filter options must be ordered in advance and are cabled in the factory. For these
options, refer to the wiring diagram provided with your filter to identify the electrical
connections if desired. For some accessories however, the customer may have to do the
cabling on site. These accessories include:
−
The connection of the USB or Ethernet cable used for PQ-Link software
communication (optional)
−
The connection of the Ethernet cable used for Modbus TCP communication
(optional)
−
The connection of the RS485 Modbus RTU adapter (optional)
The connections of the aforementioned accessories are discussed next.
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:
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Using our in-house communication software called PQ-Link (TCP/IP-USB)
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Using any communication system supporting the Modbus TCP protocol
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Using any communication system supporting the Modbus RTU protocol
70 Electrical design and installation  Manual Power Quality Filter PQFS
Section 6.12.1) at the same