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Allen-Bradley PLCs
Connecting Your 1394 SERCOS Interface System
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
1394C-SJT05-D or 1394C-SJT10-D system module to the subpanel and
that there is no power applied to the system. To set the ground
jumper for an ungrounded system:
If you have grounded power distribution, you do not
IMPORTANT
need to set the ground jumper. Go to Grounding
Your 1394 SERCOS interface System.
1. Verify that all 24V control and 360/480V power has been removed
from the system.
2. Open the system module door.
3. Remove the three control board screws (refer to Figure 2.4 for
locations).
4. Remove ribbon cable from control board (refer to Figure 2.4 for
location).
Note: You should not find it necessary to remove both ends of the
ribbon cable. Remove only the control board end.
5. Remove the control board for easy access to ground jumpers (pull
it straight out from system module).
6. Locate the jumper connecting J4 and J5 on the assembly adjacent
to the control board, and move one end of the jumper from J5 to
J6 (refer to Figure 2.4 for locations).
7. Re-install the control board. Align the guide pins in the rear of the
enclosure with the holes in the control board.
8. Re-install ribbon cable into the control board connector.
9. Re-install the three control board screws.
10. Close the system module door.
11. Go to Grounding Your 1394 SERCOS interface System.
2-7
Publication 1394-5.20 — July 2001
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