Rockwell Automation WebPak 3000 DC Drives Hardware Reference, Installation and Troubleshooting - Manual (Page 21)

Install and Wire the Drive 2-9
2.4 Install the Motor
1. Verify that the motor is the appropriate rating to use with the drive.
2. Install the DC motor in accordance with its installation instructions.
3. Make sure that coupled applications have proper shaft alignment with the driven machine or
that belted applications have proper sheave/belt alignment to minimize unnecessary motor
loading.
4. If the motor is accessible while it is running, install a protective guard around all exposed
rotating parts.
5. Wire the motor to the drive. Refer to "Wire the DC-Motor to the Drive".
2.5 Wiring
ATTENTION: The user is responsible for conforming to all applicable standards.
Wiring, grounding, disconnects and overcurrent protection are of particular
importance. Size and install all wiring in conformance with all other applicable
standards. Failure to observe this precaution could result in severe bodily injury or
loss of life.
2.5.0 General Wiring Practices
The Drive is designed for AC entry and DC power exiting at the top and control and signal
wiring entering from the bottom.
Reference signal wiring should be run in a separate conduit isolated from all AC and DC power
and control. Signal wires should not be run in parallel with high voltage or electrically noisy
conductors. Always cross such conductors at 90
° .
All reference signals should be wired with either twisted double or twisted triple conductor wire,
40 twists per meter, stranded copper, 1.5 mm
2 , or screened 4-stranded (3, PE) 0.5 mm 2 (PN
380.35.01), 600 VAC rated insulation, with a temperature range of 40 - 105 ° C.
Analog tachometer feedback should be run in a separate conduit isolated from all AC and DC
power and logic control. Wiring should be the same as for the reference signals but screened
per pair if stranded cable 0.5 mm
2 (PN 380.33.00) is used.
Digital tachometer feedback (Encoder) wiring should be twisted per pair, not screened and be
run in a separate conduit isolated from all AC and DC power and logic control.
For mounting with external contacts and solenoids, coils should be suppressed to reduce noise.
Important: The maximum recommended wire length from the drive to the motor is 300 meter.
2.5.1 Ground the Drive and Enclosure, the Motor and the Operator's Control Station
(for Grounding WebPak Drives in UL / cUL Version refer Recommended Lugs, next page )
You must ground both the control and power wiring.
1. Locate the drive ground points as shown in figures 2.4 to 2.6.
2. Run a suitable equipment grounding conductor unbroken from either drive ground point
(terminal PE or ground stud) to the plant ground (grounding electrode). A ring lug is
recommended at the ground point.
3. Connect a suitable grounding conductor from each conduit to this drive ground point.
4. Connect a suitable equipment grounding conductor to the motor frame, the transformer
enclosure if used, and the drive enclosure. Run this conductor unbroken to the grounding
electrode.
5. Connect the PE (green/yellow) wire brought in with the incoming AC power line to the drive
ground point.
6. Tighten chassis ground connections per tables in figures 2.1 to 2.6.