ABB DSRF197K01 S100 system I/O rack
6.10 Auxiliary power, control and
serial communication cables
The method to prepare the auxiliary power and control cables for
connection is described below.
6.10.1 Further information
—
The power feed for the auxiliary
supply must be protected with a
suitable circuit protection rated
for the inrush current. For information, see utility consumption
list of the drive.
6.10.2 Preparing the cable entry and the cables
Determining the cable length
1. Determine the required length of a cable
between the point of entry and the connection
point inside the cabinet.
2. Cut the cable to the required length before connection.
Routing the cables
Route the cables to the customer terminals in the
control compartment as illustrated.
Preparing the cables for EMC plates
Top entry
1. Remove the grommets.
See mechanical drawings for information
on:
• Project-specific cable entry
• Dimensions between point of cable
entry and terminals
See wiring diagrams for information on:
• Conventions for cross-references and
device identification
• Terminal designations

2. To ensure proper sealing, cut along the marking
that corresponds to the cable diameter.
3. Slide the grommet onto the cable. The grommet must fit tightly to prevent water entering
the cabinet.
4. The grommets can be discarded if cables are
entered through the floor.
If necessary, remove the entry plate and pull the
cables through the entry holes.
Top or bottom cable entry
5. Loosen the screws of the EMC cushion brackets
and push the cushions apart.
6. Remove the cable insulation at the point of
entry (1).
If the outer cable screen is non-conductive, cut
open the cable screen in the middle of the
stripped area (1). To turn the conductive side
inside out, pull the cable screen ends over the
cable insulation (2). Connect the screens ends
with a continuous conducting foil (3).
7. Pull the cables through the EMC cushions.
8. Push the cushions together so they fit tightly
around the bare screen and tighten the screws.
6.10.3 Connecting the cables
IOEC modules
Connect the cables for digital and analog input and
output signals to the IOEC modules.
Conductors
• If a twisted pair cable is used, leave the
unshielded cable ends twisted until they reach
the terminals.
• Leave unshielded conductor ends as short as
possible (not longer than 50 mm).
Cable shields
1. Connect the shield of serial communications
cables to the fieldbus adapter.
2. Connect the overall shield and the individual
shields of the encoder cable to the separate
shield grounding bracket (3). Do not connect
the shields directly to the encoder adapter (1).
To accommodate encoder cables of different
diameters, ground clamps (2) of different sizes
are supplied.