Rockwell Automation 22D AC Drive Installation Considerations - Manual

Installation Instructions
AC Drive Installation Considerations
Overview This publication identifies important installation considerations for
Allen-Bradley adjustable frequency AC drives.
Precautions Qualified Personnel
General
Reference
Materials For detailed information about your drive, including mechanical and electrical
installation, programming, application considerations, troubleshooting, and
related precautions, refer to the documentation that was packaged with your
drive and additional publications available online at:
www.rockwellautomation.com/literature
Refer to Wiring and Grounding Guidelines for Pulse Width Modulated (PWM)
AC Drives, publication DRIVES-IN001, for basic information on how to
properly wire and ground Allen-Bradley drives.
Installation
Considerations Configure For Non-Solid Grounded Distribution Systems
Your drive may contain protective MOVs and common mode capacitors that are
referenced to ground. Disconnect these devices from ground when installing the
drive on any of the following non-solid grounded distribution systems:
Measure Input Impedance
Do not install a drive on a power distribution system that is more than 10 times
the drive kVA rating without adding impedance (line reactor or transformer) in
front of the drive.
ATTENTION: Only qualified personnel familiar with adjustable frequency
AC drives and associated machinery should plan or implement the
installation, start-up and subsequent maintenance of the system. Failure
to comply may result in personal injury and/or equipment damage.
ATTENTION: To avoid an electric shock hazard, verify that the voltage on
the bus capacitors has discharged before performing any work on the
drive. Measure the DC bus voltage at the +DC and –DC terminals of the
Power Terminal Block. Refer to the product-specific documentation for
location. The voltage must be zero.
• AC fed ungrounded • B phase ground
• Impedance grounded • Regenerative unit such as common DC bus supply & brake
• High resistive ground • DC fed from an active converter