ABB FEN-31 User Manual page 24

24
Configuring the internal pull-up resistor dip switches
In FEN-31, a 1.55 kΩ resistor is connected to each signal line (A+,
B+, Z+) from one end and the other end is, by default, floating.
These floating ends can be connected via DIP switches between
connectors X81 and X82.
DIP switches 1, 2, and 3 connect the floating ends of the resistors.
Switch 4 selects whether the resistor ends (connected together)
are further connected to 0V or VCC (ground or supply voltage).
Note: To access the DIP switches, the FEN-31 cover has to be
removed.
DIP switches located under the cover
Installation
ON
OFF