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6. Ground the shields of the control cables at the clamp plate. The shields should be
continuous as close to the terminals of the control unit as possible. Only remove the
outer jacket of the cable at the cable clamp so that the clamp presses on the bare
shield. The shield (especially in case of multiple shields) can also be terminated with a
lug and fastened with a screw at the clamp plate. Leave the other end of the shield
unconnected or ground it indirectly via a few nanofarads high-frequency capacitor, eg,
3.3 nF / 630 V. The shield can also be grounded directly at both ends if they are in the
same ground line with no significant voltage drop between the end points.Tighten the
screws to secure the connection.
7. Connect the conductors to the appropriate detachable terminals of the control unit.
See section
Default I/O connection diagram (ABB standard macro)
default I/O connections of the ABB standard macro. For other macros, see the
firmware manual. Use shrink tubing or insulating tape to contain any stray strands.
Tighten the screws to secure the connection.
Note: Keep any signal wire pairs twisted as close to the terminals as possible.
Twisting the wire with its return wire reduces disturbances caused by inductive
coupling.
Installation instructions 83
on page
84
for the
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