7
Installation
Shielding guidelines
Warning
Under no circumstances should power and
logic leads be bundled together. Induced
voltage can cause unpredictable behavior in
any electronic device, including motor controls.
As a general rule, Minarik recommends shielding of all conductors. If it is not practical
to shield power conductors, Minarik recommends shielding all logic-level leads. If
shielding logic level leads is not practical, the user should twist all logic leads with
themselves to minimize induced noise.
It may be necessary to earth ground the shielded cable. If noise is produced by
devices other than the drive, ground the shield at the drive end. If noise is generated
by a device on the drive, ground the shield at the end away from the drive. Do not
ground both ends of the shield.
If the drive continues to pick up noise after grounding the shield, it may be necessary
to add AC line filtering devices, or to mount the drive in a less noisy environment.
Logic wires from other input devices, such as motion controllers and PLL velocity con-
trollers, must be separated from power lines in the same manner as the logic I/O on
this drive.
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