ABB ACQ810-04, Hardware Manual, Page: 93 / 144

Installation 93

Connecting the control cables to the terminals of the control unit
1. Route the cables to the control unit as shown below.
2. 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
3
Remove outer jacket of cable at clamp to
expose cable shield. Tighten clamp to
1.5 N·m (13 lbf·in)
2. Run cables through the
cover mounting bracket
3. Use shrink tubing or tape to
contain strands