Manual

Rockwell Automation Publication PFLEX-IN006E-EN-P - July 2013 79
Frame 10 Mechanical Installation Chapter 6
Ungrounded, High Resistive
Ground or Grounded B Phase
Delta Installations
Frame 10 size drives are equipped with common mode capacitors and capacitors
that are connected to the input terminals. To guard against drive damage, these
capacitors should be disconnected depending upon the type of ground system on
which the drive is installed.
Installation on an Ungrounded Distribution System or High Resistive
Ground
If you are installing a 400/480V AC input drive on an ungrounded distribution
system or high resistive ground, you:
• Must move the common mode jumper to the disconnected position - see
Move the Common Mode Jumper to the Disconnected Position on page
81
.
• Should insulate terminal X4 on the Rectifier circuit board- see Insulate
Terminal X4 on the Rectifier Circuit Board on page 82
.
• Must disconnect the small capacitors from the input terminals - see
Disconnect the Small Capacitors from the Input Terminals on page 83
.
If you are installing a 600/690V AC input drive on an ungrounded distribution
system or high resistive ground you:
• Must move the common mode jumper to the disconnected position - see
Move the Common Mode Jumper to the Disconnected Position on page
81
.
• Must insulate terminal X4 on the Rectifier circuit board- see Insulate
Terminal X4 on the Rectifier Circuit Board on page 82
.
• Must disconnect the small capacitors from the input terminals - see
Disconnect the Small Capacitors from the Input Terminals on page 83
.
Installation on a Grounded B Phase Delta System
If you are installing a drive on a grounded B phase Delta system you:
• Must move the common mode jumper to the disconnected position - see
Move the Common Mode Jumper to the Disconnected Position on page
81
.
• Must insulate terminal X4 on the Rectifier circuit board- see Insulate
Terminal X4 on the Rectifier Circuit Board on page 82
.
• Must disconnect the small capacitors from the input terminals - see
Disconnect the Small Capacitors from the Input Terminals on p age 83
.
Note: See Wiring and Grounding Guidelines for Pulse Width Modulated
(PWM) AC Drives, Installation Instructions, publication DRIVES-IN001
, for
additional information on an ungrounded distribution system or high resistive
ground installation.