Rockwell Automation Publication 2080-UM002K-EN-E - March 2019 41
Chapter
4
Wire Your Controller
This chapter provides information on the Micro830, Micro850, and Micro870
controller wiring requirements. It includes the following sections:
Wiring Requirements and
Recommendation
• Allow for at least 50 mm (2 in.) between I/O wiring ducts or terminal
strips and the controller.
Topic Page
Wiring Requirements and Recommendation 41
Use Surge Suppressors 42
Recommended Surge Suppressors 44
Grounding the Controller 45
Wiring Diagrams 46
Controller I/O Wiring 52
Minimize Electrical Noise 52
Analog Channel Wiring Guidelines 52
Minimize Electrical Noise on Analog Channels 52
Grounding Your Analog Cable 53
Wiring Examples 53
Embedded Serial Port Wiring 55
WARNING: Before you install and wire any device, disconnect power to
the controller system.
WARNING: Calculate the maximum possible current in each power and
common wire. Observe all electrical codes dictating the maximum
current allowable for each wire size. Current above the maximum ratings
may cause wiring to overheat, which can cause damage.
United States Only: If the controller is installed within a potentially
hazardous environment, all wiring must comply with the requirements
stated in the National Electrical Code 501-10 (b).