Electrical installation 31
Switching on the bus termination
Bus termination is required to prevent signal reflections from the
bus cable ends. The adapter module is equipped with internal bus
termination, which is configurable with jumper J2 pins.
Activate the termination on the devices located at the bus ends
and deactivate it on the other devices. See the figure below.
RS-485
device
ON
RS-485
device
OFF
RS-485
device
ON
OFF
Term.
Term.
Term.
Term.
J2
Termination
activated
Termination
activated
Termination
deactivated
Termination
deactivated
J2
J2
J2
RS-485
device
Summary of Contents for FSCA-01
Page 1: ... OPTION FOR ABB DRIVES CONVERTERS AND INVERTERS FSCA 01 RS 485 adapter module User s manual ...
Page 4: ......
Page 8: ...8 Table of contents ...
Page 18: ...18 About the manual ...
Page 24: ...24 Overview of the RS 485 network and the FSCA 01 module ...
Page 28: ...28 Mechanical installation ...
Page 32: ...32 Electrical installation ...
Page 68: ...68 Communication profiles ...
Page 82: ...82 Communication protocol ...