Rockwell Automation Allen-Bradley 2094-BM01-S - Common Bus Fusing Requirements; Setting the Ground Jumper in Ungrounded Power Configurations

Rockwell Automation Publication 2094-UM001D-EN-P - May 2010 83
Connecting the Kinetix 6000 Drive System Chapter 5
Common Bus Fusing Requirements
When using a Kinetix 6000 leader IAM module, DC-bus fuses are required only
when wiring to more than one Kinetix 6000 follower IAM module. When wiring
multiple follower IAM modules, terminal blocks are required to extend the DC
common-bus power to additional drives. You should install fuses in both lines of
the DC bus between the DC bus terminal block and each follower IAM module.
These fuses should be rated based on the DC input current of each follower IAM
module.
When using a non-Kinetix 6000 common-bus leader drive, DC bus fuses are
required in both lines of the DC bus, between the common-bus leader drive and
follower IAM module. These fuses should be rated based on the common-bus
leader drive DC output current. When using more than one follower IAM
module, fuses should be installed in both lines of the DC bus between the
non-Kinetix 6000 common-bus leader and the terminal block as well as between
the DC bus terminal block and each follower IAM module.
Refer to Circuit Breaker/Fuse Specifications on page 187
for recommended fuse
sizes. Refer to DC Common Bus Wiring Examples on page 205
for interconnect
diagrams.
Setting the Ground Jumper
in Ungrounded Power
Configurations
Setting the ground jumper is necessary only when using an ungrounded or
high-impedance grounded power configuration. Setting the jumper involves
removing the IAM module from the power rail, opening the IAM module, and
moving the jumper.
Setting the ground jumper is best done when the IAM module is removed from
the power rail and placed face-up on a solid surface equipped as a grounded
static-safe workstation.
IMPORTANT
If you have grounded power distribution, you do not need to set the
ground jumper. Go to Grounding the Kinetix 6000 Drive System on
page 89
.
ATTENTION: To avoid personal injury and/or damage to equipment,
remove the IAM module from the power rail before setting the ground
jumper.
By setting the ground jumper for ungrounded power configurations, you
no longer maintain line-to-neutral voltage protection.