Baldor MotiFlex e100, Installation Manual, Page: 46 / 220

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3-30 Basic Installation MN1943
3.7.1 Motor cable shielding
It is essential that the motor cable shield is correctly bonded to a functional earth, typically the
same earthed metal backplane on which the MotiFlex
e
100 is mounted. The motor power output
cable carries a high frequency high current waveform to the motor, so the cable’s shielding must
be earthed to prevent the cable radiating electromagnetic contamination into the surrounding
area. Such contamination can cause spurious errors in apparently unrelated parts of the
installation, such as low voltage communication cables. To provide a low impedance path to earth
and effective shielding, the conductor must provide contact with a large proportion of the cable’s
circumference. Figure 16 shows two possible methods.
3.7.1.1 Exposing the cable shield
1. Make a single circular cut in the cable’s outer sheath, ensuring that the cable’s braided shield
is not damaged.
2. Slide the section of outer sheath towards the end of the cable to expose an area of braided
shield. Carefully remove the excess sheath at the end of the cable.
3. Attach the metal P-clip or clamp to the exposed area of braided shield.
4. Ensure that the P-clip (or Motor Cable Management Bracket) is securely attached to an
unpainted area of the metal backplane.
Using the optional
Motor Cable Management Bracket
OPT-CM-001 (recommended)
Using a metal P-clip
Looping the inner cores
allows easy insertion
and removal of the motor
power connector.
On painted
panels, remove
paint to expose
bare metal
Motor
UVW
Motor
protective earth
(PE)
Figure 16 - Motor connections - physical cable arrangement