Rockwell Automation Allen-Bradley PowerFlex 700AFE, User Manual

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Rockwell Automation Publication 20Y-UM001F-EN-P - April 2017 31
AFE in IP20 2500 MCC Style Enclosure – Installation/Wiring Chapter 1
Grounding Guidelines for Pulse Width Modulated (PWM) AC Drives,
publication DRIVES-IN001 .
Interlocked armor is acceptable for shorter cable runs, but continuous welded
armor is preferred.
Best performance is achieved with three spaced ground conductors, but
acceptable performance below 200 Hp is provided by use of one ground
conductor.
Recommended shielded/armored wire is listed in Table 1 .
Table 1 - Recommended Shielded/Armored Wire for AFE in IP20 2500 MCC Style Enclosure
Cable Trays and Conduit
If cable trays or large conduits are used, see the guidelines in Wiring and
Grounding Guidelines for Pulse Width Modulated (PWM) AC Drives,
publication DRIVES-IN001 .
Select and Verify Control Transformer Voltage
The control transformer in the AFE is used to match the input AC line voltage
of the AFE in an IP20 2500 MCC Style enclosure to the 230V and 120V
control voltage.
Location Rating/Type Description
Standard
(option 1) 1000V, 90 °C (194 °F)
XHHW2/RHW-2
Anixter B29528-B29532
Belden 29528-29532
Or equivalent • Four tinned copper conductors with XLPE insulation.
• Copper braid/aluminum foil combination shield and
tinned copper drain wire.
• PVC jacket.
Standard
(option 2) Tray rated 1000V, 90 °C (194 °F)
RHH/RHW-2 Anixter
OLFLEX-76
xxx 03
Or equivalent
• Three tinned copper conductors with XLPE insulation.
• Corrugated copper tape with three bare copper grounds
in contact with shield.
• PVC jacket.
Class I & II;
Division I & II Tray rated 1000V, 90 °C (194 °F)
RHH/RHW-2
Anixter 7VFD-
xxxx
Or equivalent
• Three bare copper conductors with XLPE insulation and
impervious corrugated continuously welded aluminum
armor.
• Black sunlight resistant PVC jacket overall.
• Three copper grounds.
ATTENTION: To avoid a possible shock hazard that is caused by induced
voltages, unused wires in the conduit must be grounded at both ends. For the
same reason, if a drive that shares a conduit is being serviced or installed, all
drives that use this conduit must be disabled. Disable the drives to help
minimize the possible shock hazard from ‘cross coupled’ motor leads.