Installation manual
Publication 1394-IN002B-EN-P — February 2004
Connecting Your 1394 SERCOS Interface System 3-7
Figure 3.3
Ground Jumper Locations for the 5 and 10 kW System Modules
Setting the Ground Jumper in 22 kW System Modules
This procedures applies to 1394C-SJT22-D system module. To set the 
ground jumper for an ungrounded system:
1. Verify that all 24V logic and main input power has been removed 
from the system.
2. Open the system module door.
3. Locate the ground jumper inside the system module (refer to 
Figure 3.4 for jumper location).
4. Without removing the circuit board, unplug the jumper and move 
it to the ungrounded power distribution position. Refer to Figure 
3.5 for the jumper positions.
0
1
2
3
4
5
6
7
8
9
1 2 3
J4
J5
J6
Enable0
Home0
Reg0_Com
Reg0_1
Pos_Otrav0
Neg_Otrav0
I/O_Com
Reg0_2
AXIS 0
Enable3
Home3
Reg3_Com
Reg3_1
Pos_Otrav3
Neg_Otrav3
I/O_Com
Reg3_2
AXIS 3
Enable2
Home2
Reg2_Com
Reg2_1
Pos_Otrav2
Neg_Otrav2
I/O_Com
Reg2_2
AXIS 2
Enable1
Home1
Reg1_Com
Reg1_1
Pos_Otrav1
Neg_Otrav1
I/O_Com
Reg1_2
AXIS 1
15
84
1
5
8
4
15
84
15
84
OUTPUT 0
OUTPUT 1
OUTPUT 2
OUTPUT 3
DRIVE SYSTEM OK
RELAY OUTPUTS
1
DANGER
!
RISK OF ELECTRICAL SHOCK.
 MORE THAN ONE
 DISCONNECT SWITCH
 MAY BE REQUIRED TO
 DE-ENERGIZE THE
 EQUIPMENT BEFORE
 SERVICE.
ELECTRICAL SHOCK HAZARD 
FROM ENERGY STROAGE 
CAPACITORS.
 VERIFY LOW VOLTAGE
 DISCHARGE BEFORE
 SERVICING.
SEE INSTRUCTIONAL MANUAL.
DANGER
!
1394 Digital Servo Controller
System Module
SERCOS interface
TM
10
- SERCOS
 Base Address
 x10
 - Analog_Out_1
 - Analog_Out_2
 - Analog_Out_3
 - Analog_Out_4
 - Common
 - N/C
 - N/C
 - N/C
 - N/C
AXIS 0 AXIS 1 AXIS 2 AXIS 3 RELAY OUTPUTS
 SERCOS
 Network Status 
- SERCOS
 Receive
- SERCOS
 Transmit
OFF ON
Upper Control Board Screw
Lower Control Board Screw
Ground Jumper Terminals
1394C-SJTxx-D 
(5 and 10 kW)
Ribbon 
Cable 
Connector
Side 
Control Board 
Screw
IMPORTANT
Do not remove circuit board from 1394 system 
module.










