Rockwell Automation MPS-xxxx Stainless Steel Servo Motor - Manual (Page 8)

8 MP-Series Stainless Steel Servo Motor with 100 mm to 165 mm Frame Size
Publication MP-IN005F-EN-P - January 2014
Power Cable Shielding
Power cables must be shielded, and the cable shield connects to ground.
Verify the separate signal-wire shield connect to the overall chassis ground by looping back each
of the signal wire pairs as shown in
Shielding of Signal Wires within a Power Cable on page 8 .
Clamp all three shields together at the power cable (chassis) ground connection on the drive.
Shielding of Signal Wires within a Power Cable
The signal wire pairs within a power cable often carry a 24V DC brake signal, but can also carry
logic signals. Grounding the shield that surrounds the signal wires dissipates an induced voltage
and reduces the effects of EMI.
ATTENTION: High voltage can be present on the shields of a power cable, if the shields are not grounded.
Verify there is a connection to ground for all shields in the power cable.
Power cable contains two paired signal wires, each with a separate
ground shield, in addition to the U, V, and W power wires. A brake
motor uses one wire pair for the brake signals.
Cable insulation is removed to expose the overall shield of the cable.
Loop the signal wires and shielding to contact the overall power-cabl
shield.
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Factory Supplied
Power Cable
Field Modified Power
Cable
Connect shields to the power-cable ground clamp on the drive. The
drive clamp must contact all (overall, signal, and brake) cable
shields.
Catalog number 2090-XXNPMF-xxSxx is shown.