Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 15)

1 Publication 1797-6.5.3 - March 2006
Chapter
1
About the FLEX Ex HART Analog Modules
What This Chapter Contains Read this chapter to familiarize yourself with the input and output analog
modules.
What the FLEX Ex Analog
I/O Modules Do The 1797-IE8H module accepts up to 8 analog inputs. The inputs are
non-isolated and will accept current in either of the following two ranges: 4 to
20 mA or 0 to 20mA. The default input range is 0 to 20 mA. The inputs have
both fixed hardware filters and selectable firmware digital filters.
Similarly, the 1797-OE8H module provides as many as eight analog outputs.
The outputs are nonisolated and will provide current in either of the following
two ranges: 4 to 20 mA or 0 to 20 mA. The default output range is 0 to 20 mA.
Each module offers host of features including:
• Local microprocessor intelligence for advanced features
• Full functionality without switches or jumpers
• Multiple data ranges that can be independently programmed
in channel groups
• Lead breakage detection
• Overrange/underrange alarms
• Remote transmitter alarm
For See
What the FLEX Ex Analog I/O
Modules Do 1-1
How FLEX Ex Analog Modules
Communicate with Programmable
Controllers 1-2
Physical Features of Your Analog I/O
Module 1-3
Chapter Summary 1-15