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National Instruments Corporation
23
MID-7654/7652 Servo Power Motor Drive User Guide
Cable Installation for CE Compliance
Take the following additional steps to ensure CE Compliance:
1.
Enclose the terminal block wires in a 360-degree shielded cable. This requires a braided shield.
2.
Install the strain-relief bar on the MID-7654/7652 as described in the
section of this guide.
3.
Place all cables connecting to the back panel through the strain-relief bar, as follows:
a.
All servo motor cables must pass through the far right clamp on the strain-relief bar, which is
directly aligned with the servo motor terminals and protection cover.
b.
All remaining cables should pass through the three clamps to the left of the servo motor
terminals.
c.
Cables passing through the same clamp must be of the same cable diameter.
d.
Cables passing through the same clamp must be parallel and must not overlap each other,
as shown in Figure 22.
4.
All cables must be properly grounded to the strain-relief bar, which grounds them to the
MID-7654/7652 chassis ground. Follow these steps to ground the cables to the strain-relief bar:
a.
Remove the outer jacket from the section of the cable to be inserted between the strain-relief
bar clamp and foam, as shown in Figure 22. This will expose the braided shield of the cable.
Note
Do
not
cut the braided shield of the cable.
Figure 22.
Required Cabling for CE Compliance
b.
Lay the cables so that the braided shield makes full contact with the foam of the strain-relief
bar. The braided shield must only make contact with the strain-relief bar, and no other part of
the device.
c.
Lower the clamp and tighten the thumb nuts to remove all gaps between the foam and the
cable shields. The foam should press around the shield of the cable to provide 360-degree
grounding to the cable shield.
5.
Ground the braided shield at the opposite end of the cables to your destination enclosure ground.
1
Braided Shield of the Cable
2
Strain Relief Bar
3
Terminal Block Connector
2
3
1
