Publication 1747-UM011G-EN-P - June 2008
publication 1770-4.1, and System Designfor Control of Electrical Noise, 
publication GMC-RM001.
United States: An authoritative source on grounding requirements for most 
installations is the National Electrical Code. Also, refer to Allen-Bradley 
Programmable Controller Grounding and Wiring Guidelines, publication 
1770-4.1 and System Design for Control of Electrical Noise, publication 
GMC-RM001.
In addition to the grounding required for the SLC 500 controller and its 
enclosure, you must also provide proper grounding for all controlled devices in 
your application. Care must be taken to provide each device with an acceptable 
grounding path.
This figure shows you how to run ground connections from the chassis to the 
ground bus. The recommended grounding method is shown below. Using a 
ground bus reduces the electrical resistance at the connection.
Ground Connection Paths
(1)
(1)
(1)
Earth Ground 
8.37 mm
2
(8 AWG) wire
Functional Ground
5.26 mm
2
(10 AWG)
(1) Keep safety ground connection to panel as short as possible.
Nearest Ground Bus
Safety Ground
2 mm
2
(14 AWG)
Safety Ground
2 mm
2
(14 AWG)
Safety Ground
2 mm
2
(14 AWG)Total PPS180-40 
Total 7000-M0
emecanique VR2SA2121
Sütron TP32ET-01/029049
Sütron BT20N BT20N/081030
Stromag ADC 006.3
SMAK Baugruppe SMAK GL 4904.3200
SK1 Baugruppe SK1 GL 4905.5400
Control Techniques 140X8/16
Control Techniques 140X14/28 28A
Control Techniques 140X14/28 DCD AS-IS
Control Techniques 140 X 14/28 140X14/28
Control Techniques 2400-8000 24008000
Control Techniques 2400-8001
Control Techniques 2450-4000
Control Techniques 2450-4012
Control techniques 566-860-000
Control Techniques 6150
Control Techniques 6M4Q30
Control Techniques 75EZB300CACAAA 876248
Control Techniques 8200-00048
Control Techniques 8200-00161EN

1756-PAR2  1756-PAR2  1756-PAR2
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Control Techniques 94501MVO
Control Techniques 9500-8411
Control Techniques 9500-8602
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Control Techniques CTIU100K-001