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M’Ax Installation Guide
23
Issue Number: 6
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Direct grounding
1.
Using an uninsulated metal cable-clamp (1), electrically bond the
shield (2) of the cable to the back-plate (3).
2.
Ensure there is no more than 250mm (10 in) of cable length (4)
between the clamp and the drive.
(For clarity, the upper mounting bracket has been omitted from this
view.)
Indirect grounding
Indirect grounding uses a 10nF capacitor to prevent low-frequency
ground-loop currents from occurring; these can cause problems in
systems controlled by analog signals.
1.
Use insulating studs (5) to mount an uninsulated metal plate (6) on
the back-plate (3); the plate (6) must be insulated from the back-
plate.
2.
Using uninsulated metal cable-clamps (1), electrically bond the
shield (2) of each cable to the metal plate (6).
3.
Ensure there is no more than 250mm (10 in) of cable length (4)
between each clamp and the drive. (Refer to the preceding
diagram.)
4.
Connect a 10nF 2kV ceramic disc capacitor (7) between the metal
plate (6) and the back-plate (3). Maximum permissible length of
each lead-out wire is 20mm (0.787in).
