ABB IRC5P, Руководство по эксплуатации продукта, Страница: 213 / 220

10 Reference Information
Product Manual, Control Cabinet IRC5P 3HNA009834-001 en Rev.06 213
10.3 Bonding Information
Clamping Cables
All cables entered into the control cabinet must be clamped to the screen rail at the
bottom of the cabinet as shown in Figure 89 and if necessary clamped at the
connector where it is connected. Different methods are used for different types of
connections as follows:
Figure 89 Screen clamping
Method A - Cables connected to connectors near the strain relief rail
Cable screen must be clamped to the strain relief rail and wires / connector routed to
the connection point as shown in Figure 89 left.
Method B - Cables connected to connectors away from the strain relief rail
A section of the cable must be dismantled and clamped to the strain relief rail. The
cable is then routed to the connection point where the screen is clamped to the
cabinet frame using p-clip as shown in Figure 89 center. For the motor/signal cable
connected to X11 and X12, it must be observed that both the outer screen for the
motor cable and the inner screen for the signal cable must be secured under the
clamp. Ref. Figure 89 inset.
Method C - Cables for sensitive signals
Cable for extra sensitive signals such as analog signals must be grounded at the
component where it is connected in addition to the ground connection on the strain
relief rail as shown in Figure 89 right.
CAUTION!
Do not use excessive force when tightening clamps. Tightening clamps
too hard may damage cable and signal wires.
Signal cable for
extra sensitive
signals
Screen
Screen clamp
Signal cable etc.
IMPORTANT:
Max length: 30mm
Inner Insulation
Outer Insulation
Strain relief rail
Dust seal
Method A
Method B
Method C
Secure cable at
connection point
using p-clip.
IMPORTANT:
Both motor cable screen and signal cable
screen must be secured under clamp
Signal cable
to X12 Motor power
cable to X11
Signal cable screen
Motor cable screen
Clamp
IMPORTANT:
For extended cabinet, cables
connected at the top must be
secured with 2 strain relief ties