Chapter 18
4 To 20 Milliamp Output
XL™ Series 4 To 20 Milliamp Output 18-1
18.1 Introduction
These options allow the XL™ to use any of its input signals as a data source to generate a current
output simulating a 4 to 20 mA sensor. The XL does not actually generate the current in the loop
but controls the current in a loop that is externally powered. The 4 to 20 milliamp connection
points are optically isolated from the rest of the XL circuitry.
18.2 4 To 20 Milliamp Menus
Built in Menu Structure: 4 to 20 Milliamp Options Menu.
Output Options -> 4-20 mA Options -> mA Output = X.XXX
4-20 Source [None ]
Max Value [20.00 ]
Min Value [0.00 ]
PC Menu Screen: 4 To 20 Milliamp Options.
4 to 20 MilliAmp Output Options (Esc to Return)
Current Milliamp Output: Not Enabled
S - Data Source: None
H - Maximum Level: 20.000
L - Minimum Level: 4.000
Enter Option >
18.3 4 To 20 Milliamp Options
PC Interface View Built In Display Screen
Current Milliamp Output: xx.xx
mA Output = XX.XX
This screen shows what the output current should be if it were measured with a current meter. It
should be in the range of 4 to 20 milliamps. This is based on the value of the data source, the
Max value and the Min value.
If a current meter is used to verify the output and it does not match this value then check the
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