Electrical installation
72
3ADW000462R0401 DCS880 Hardware manual e d
Connecting the signal and control cables
Used screened cables for digital signals, which are longer than 3 m and for all analog signals.
Connect each screen at both ends by metal clamps or comparable means directly on clean metal
surfaces, if both earthing points belong to the same earth line. Otherwise, connect a capacitor to
earth on one end. In the converter cabinet this kind of connection must be made directly on the sheet
metal close to the terminals and if the cable comes from outside also on the PE bar. At the other end
of the cable, connect the screen well with the housing of the signal emitter or receiver.
Routing the cables
Run the motor cable away from other cable routes. Motor cables of several drives can be run in parallel
installed next to each other. Motor cables, input power cables and control cables should be installed on
separate trays.
Avoid long parallel runs of motor cables with other cables to decrease electromagnetic interference caused by
the rapid changes in the drive output voltage.
Where control cables must cross power cables, ensure they are arranged at an angle as close to 90 degrees
as possible. Do not run spare cables through the drive or cabinet.
The cable trays must have good electrical bonding to each other and to the grounding electrodes.
Aluminum tray systems can be used to improve local equalizing of potential.
The following diagrams show the proper routing of cables.
Connection of cable
screens with metal clamps
to the metal surface of the
electronic tray.
Size H7, H8
screen connection
Not
a
llowed
u
nle
ss
the 24 V
DC
c
ab
le i
s
in
su
l
a
ted for 120/230 V
AC
or in
su
l
a
ted with
a
n in
su
l
a
tion
s
leeving for 120/230 V
AC
.
Ro
u
te 24 V
DC
a
nd 120/
230 V
AC
control c
ab
le
s
in
s
ep
a
r
a
te d
u
ct
s
in
s
ide the
c
ab
inet.
SA_DCS_001_kabel_c.ai
Drive
Input power cable
min 200 mm (8 in.)
min 500 mm (20 in.)
min 300 mm (12 in.)
min 300 mm (12 in.)
Control cables
90°
Motor cable
Motor / Armature cable
Field cable
Power cable
24 V
230 V
(120 V)
SA_DCS_002_kab-kanal_b.ai
24 V
230 V
(120 V)
SA_DCS_002_kab-kanal_b.ai
