Siemens LR 460 instruction manual Related parame

Parameters

4.3.4.	Min Limit
	The mA value to correspond with 4.1.7.1. Lower Value .
	Values		Range:
			Default: 3.8 mA
4.3.5.	Max Limit
	The mA value to correspond with 4.1.7.2. Upper Value .
	Values		Range:
			Default: 20.5 mA
4.3.6.	FS Mode
	The mA value to be output in the event of a fault or failure.
		mA HOLD			*	Level remains at last reading.
	Options	mA SET				User-defined value set in 4.3.7. FS Value
		mA HIGH				Use Max Limit as material level.
		mA LOW				Use Min Limit as material level.
4.3.7.	FS Value
	A user-defined mA value to be reported when the Fail-safe timer expires.
	Values		Range: 3.5 to 20.5 mA
			Default: 3.5 mA
4.3.8.	4 mA Trim
	Calibrates the 4 mA output.
	Values			Range: 2.0 to 6.0 mA
	Related parame-			4.3.1. Function
				A mA value derived from the ratio of current level to the range
	ters
				between Lower Value and Upper Value.

a.Set 4.3.1. Function to MANUAL mode.

b.Set 4.3.3. Man Value to 4 mA.

c.Attach a calibrated meter and check the output at the terminals. Record the remote reading in mA.

d.Enter the recorded value in 4.3.8. 4 mA Trim .

e.Restore 4.3.1. Function to its previous setting.

f.Confirm that the mA output is as expected.

Page 66 SITRANS LR 460 – INSTRUCTION MANUAL 7ML19985JM01