Rockwell Automation 1797-OE8 FLEX Ex Analog Modules User Manual - Manual (Page 75)

Publication 1797-6.5.1 - May 2005
Applying FLEX Ex Analog I/O Modules 6-9
Power Supply Considerations
When applying power, consider the certain characteristics of the wire
connecting the power supply output to a module’s power input. The wire
cannot exhibit more than:
• 0.1Ω of resistance (+V and -V combined)
• 800nF of capacitance
• 10µF of inductance
Typically, these restrictions will yield wiring lengths of not more than 3.5m or
5.8m (1.5mm
2 and 2.5mm 2 wire respectively) without the use of special wiring
or wiring methods.
Chapter Summary In this chapter you learned how to apply the FLEX Ex analog I/O modules.
Move to Chapter 7 to learn about troubleshooting your modules.