6.11 Signal cables
Use screened cables with a cross-sectional area of
minimum 0.5 mm
2
and maximum 1.5 mm
2
for the
external on/off switch, digital inputs, setpoint and
sensor signals.
The wires in the motor terminal box must be as short
as possible.
6.11.1 Connecting signal cables
1. Connect the screens of the cables to the frame at
both ends with good connection. The screens
must be as close as possible to the terminals.
TM082967
Model K
2. Connect the signal cables to the terminals.
3. Depending on the model, tighten one or two
terminal screws.
6.12 Bus connection cable
6.12.1 Connecting a 3-core bus cable, GENIbus
For the bus connection, use a screened 3-core cable
with a cross-sectional area of minimum 0.5 mm
2
and
maximum 1.5 mm
2
.
• If the motor is connected to a unit with a cable
clamp which is identical to the one on the product,
connect the screen to the cable clamp.
• If the unit has no cable clamp, leave the screen
unconnected at this end.
TM070223
6.12.2 Connecting a 3-core bus cable, Modbus
A screened, twisted-pair cable must be used. The
cable screen must be connected to protective earth at
both ends.
Recommended connection
Terminal Modbus
Colour
code
Data
signal
A D1 Yellow Positive
B D0 Brown Negative
Y
Common/
GND
Grey
Common/
GND
Fitting the cable
1. Connect the yellow conductor to terminals D1 and
A.
2. Connect the brown conductor to terminals D0 and
B.
3. Connect the grey conductor to terminals
Common/GND and Y.
4. Connect the cable screens to protective earth via
the earth clamp.
TM083382
It is important to connect the screen to
protective earth through the earth clamp
and to connect the screen to protective
earth in all units connected to the bus line.
27
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