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Connecting Your External
Shunt Resistor (5 and 10 kW
Systems)
Allen-Bradley PLCs
Connecting Your 1394 SERCOS Interface System
This procedure applies to 5 and 10 kW system modules and assumes
that your external shunt resistor is already mounted.
To connect your external shunt resistor:
1. Verify that there is no 24V control power, contactor enable power,
or 360/480V AC input power applied to the system.
2. Locate and unplug the shunt power connector from the bottom of
the system module (refer to Figure 2.25 for connector location).
3. Remove and discard the jumper wire between COL and INT, as
shown in the figure below.
Figure 2.25
1394 System Module Jumper Removal
4. Insert the shunt power wires into the terminal blocks as follows
and tighten the connector plug screws.
Insert the wires
labeled:
COL
(leads to shunt fuse)
DC+
5. Gently pull on each wire to make sure it does not come out of its
terminal. Re-insert and tighten each loose wire.
1394 Bottom View
Shunt Power
Connector
COL INT DC+
Remove jumper
Into the terminal
Tighten to this
blocks labeled:
torque value:
COL
0.56-0.62 N-m
(5.0-5.6 lb-in.)
DC+
Publication 1394-5.20 — July 2001
2-33
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