ABB FEN-21 Absolute encoder interface

Description

This manual contains information on the wiring, configuration and
use of the FEN-11 Absolute Encoder Interface.
Safety instructions are featured in the first few pages of this
manual.
Overview contains a short description of the FEN-11.
Installation contains instructions for hardware settings, mounting
and cabling.
Fault tracing explains the LED indications of the FEN-11.
Technical data contains detailed technical information.
The FEN-11 is to be inserted into the option slot of the drive. See
the drive hardware manual for more information.
The module is held in place with plastic retaining clips and one
screw. The screw also provides the earthing of the cable shields
connected to the module and interconnects the GND signals of the
module and the drive.

On installation of the module, the signal and power connection to
the drive is automatically made through a 20-pin connector.
Mounting procedure:
ï Insert the module carefully into the option slot until the retaining
clips lock the module into position.
ï Fasten the screw (included) to the stand-off.
The encoders should be connected to the FEN-11 with a shielded
instrumentation cable, preferably with twisted pairs. See also the
encoder manual for additional requirements. To prevent the
encoder inputs from being disturbed, the cable shield must be
connected to the chassis. The connection is made automatically
through the metal hood of the plug, if the cables are connected
through the cable clamp of the plug.

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