Installation manual
Publication 1394-IN002B-EN-P — February 2004
3-16 Connecting Your 1394 SERCOS Interface System
Wiring Main Input Power
To wire the main input power connector:
1. Prepare the incoming three-phase power wires for attachment to 
the input power connector by removing 10 mm (0.375 in.) of 
insulation.
2. Route the three-phase power wires (U, V, W, and PE) to your 1394 
system module.
3. Connect the system module ground wire from the system module 
single point bond bar to the bonded ground bar or bonded 
cabinet ground bus on the subpanel (as shown in Figure 3.7). For 
more information on bonding, refer to Chapter 1.
4. Insert the incoming power wires into the input power connector 
plug as follows and tighten the four connector plug screws.
5. Gently pull on each wire to make sure it does not come out of its 
terminal. Re-insert and tighten any loose wires.
6. Insert the input power connector plug into the input power 
connector on the bottom of the system module (refer to Figure 2.1 
for the connector location).
IMPORTANT
Use caution not to nick, cut, or otherwise 
damage strands as you remove the insulation.
Insert the wires labeled: Into connector terminals 
labeled:
UU
VV
WW
Ground PE
ATTENTION
!
To avoid personal injury or damage to 
equipment, verify that keys are inserted into the 
beveled slots above terminals V and W of the 
input power connector plug and PE and COL on 
the system module input and shunt power 
connectors, respectively. If the keys are missing, 
refer to Installing Your 1394C Power Connector 
Key Kit Installation Instructions (publication 
1394-IN023x-EN-P).










