ABB PQFM Instruction Manual page 24

Digital output number
1
2
3
4
5
6
The customer can change the default output settings by means of the PQF-Manager.
The digital outputs contacts have a common point and are of the NO-type (normal open).
The contact ratings are:
Maximum continuous ac rating: 440 Vac/1.5 A;
Maximum continuous dc rating: 110 Vdc/0.3 A;
The common is rated at 9A/terminal, giving a total of 18 A.
Information on cabling the digital output contacts is given in
Information on setting up the digital outputs with the PQF-Manager is given in
7.9.1.4
3
Alarm outputs and fan outputs
Apart from the digital outputs, one potential free relay with a NO and a NC alarm output
is available. This relay contact is activated if any error condition is present during a
preset time. The relay contact is deactivated if the error condition has disappeared for
another preset time. Information on changing the alarm activation/deactivation time is
given in Section
In a master-master filter arrangement, only the master that has the control over the
complete system will activate its alarm contact. For full redundant functionality, it is
recommended to monitor the alarm contacts of all the units in the filter system.
The maximum continuous alarm contact ratings are: 250 Vac/1.5 A.
A fan relay can be activated if a temperature probe detects an overtemperature.
4
Lock switch
Allows locking the settings of the filter panel. This switch is documented in
7.9.3.5.
5
Modbus RTU adapter interface (optional) connection
The Modbus adapter interface is connected at this location. The output of the interface
is an RS-485 socket. The interface is described in the Modbus RTU interface manual.
24 Hardware description ç Manual Power Quality Filter PQFM
Table 10: Default set-up for the digital output contacts
Default function
Auxil. ON
PQF running
Full Load
Armed
Unit miss.
T Limit
7.9.1.4.1.
Section 6.12.
Section
Section