Siemens UM344-2 user manual Loop Testing, Review Configuration Data

INITIAL TRANSMITTER SET-UP UM344-2

3.3.3 Loop Testing

LOOP OVERRIDE SETS

TRANSMITTER OUTPUT TO ENTER-

ED VALUE END CONT

WARNING! SELF TEST MAY BUMP TRANSMITTER

OUTPUT A-

BORT CONT

LOOP OVERRIDE - CHOOSE CURRENT OUTPUT LEVEL

4 MA 20 MA OTHR END

3.4REVIEW CONFIGURATION DATA

D e v I D : 2 1 0 3 0 0 0 0 3 C

Tag: TTC - 101 ADD: 00

LOOP	CAL/	CON -	END
OVRD	TEST	FIG

Testing the loop involves making sure that the Transmitter is sending out the proper current signal and that the other elements in the loop are receiving this signal. The Loop Override mode is used to test the loop.

1.At the On-Line Menu, press LOOP OVRD. The adjacent screen will be displayed. Press CONT and then PROCEED.

2.Choose either 4 mA or 20 mA from the menu, or choose OTHR to enter another value. After a value is entered, the Transmitter will output the value chosen. Read the analog current value on a:

ŸRecorder or control station in the loop

ŸMilliammeter connected in series in the loop

ŸMilliammeter connected to the TEST terminals (Figures 3-1 and 3-2)

ŸAnalog Voltage may be read on a voltmeter connected across the sense resistor.

NOTE

This is intended as a functional test. To check calibration accuracy a DMM of at least .05% accuracy must be used.

If the transmitter is not working properly, try to recalibrate it (see Section 6.1).

Before placing the Transmitter on-line, check that the proper configuration information has been stored.

1.Establish communication between the Transmitter and MXC.

2.Using the MXC screens, compare the uploaded configuration with user's configuration documentation.

3-8 September 1995