AB Quality Allen-Bradley 1394, User Manual

Page: 54 / 301

Publication 1394-5.0 — May 2000
3-8 Wiring System, Axis, and Shunt Modules, and Motors (for all systems)
Setting the Ground Jumper in a 5 or 10 kW System Module for
Ungrounded Power Configurations
This procedure assumes that you have bonded and mounted your
1394x-SJT05-x or 1394x-SJT10-x system module to the subpanel and
that there is no power applied to the system. To set the ground jumper
for an ungrounded system:
Important: If you have grounded power distribution, you do not
need to set the ground jumper. Go to Grounding Your
1394 System.
1. Verify that all 24V control and 360/480V power has been
removed from the system.
2. Open the system module door.
3.
Note: To determine the series of your module, refer to Figure P.1
in the Preface.
For ground jumper
settings on this
system module:
Do this:
Series A and B
1. Locate the jumper connected to J26 and
J27 on the circuit board behind the
Danger label in the upper right hand
corner of the system module (refer to
Figure 3.4 for the jumper’s location).
2. Unplug the jumper from J26.
3. Plug the jumper in GND3.
4. Go to main step 4.
Series C
1. Unplug the ribbon cable from the input
wiring board (refer to Figure 3.4 for
location).
2. Remove the three control board screws.
3. Remove the control board (pull it
straight out from system module).
4. Locate the jumper connecting J4 and J5,
and move one end of the jumper from J5
to J6.
5. Re-install the control board. Align the
guide pins in the rear of the enclosure
with holes in the control board.
6. Re-install the three control board screws
and re-connect the ribbon cable.
7. Go to main step 4.