Siemens sitrans LU01 - Manual (Page 31)

7ML19985BE02 SITRANS LU01 – INSTRUCTION MANUAL Page 25
mmm
mm
Ope
rat
ion
System Performance Evaluation
For initial RUN mode entry (or after any programming alteration), do not use the SITRANS
LU01 to operate process control equipment until satisfactory system programming and
performance is verified.
1. Press to enter the RUN mode. ---- may be displayed briefly while the SITRANS
LU01 takes measurements and calculates the Reading.
If an alarm symbol is displayed, the corresponding relay is de-energized.
2. Press to display Readings in % (percent of Span, P007) based upon Operation
(P001).
* Objects close to the transducer face (0%) are not detectable.
3. Press to observe the mA output value for the Point Number displayed (Auxiliary
Reading).
* Objects close to the transducer face (4 mA) are not detectable.
4. Press to observe the Failsafe Time Left (time left in percent before failsafe
activation).
Each time a valid measurement is made, this value (Auxiliary Reading) is reset to 100 and
begins to fall toward 0 until the next valid measurement is made.
If the Failsafe Time Left reaches 0, the SITRANS LU01 flashes LOE in the Reading display.
All associated data is supplied to the Peripheral Communications terminals (27 and 28).
Performance Test Results
Monitor system performance carefully, under all anticipated operating conditions.
A. If the SITRANS LU01 performs exactly as required, copy all Parameter Value
alterations to the Programming Charts in the back of this instruction manual.
(Altered Parameter Values may be scroll accessed). No further action is required.
The SITRANS LU01 will continue performing reliably, with little or no maintenance.
B. If a measurement difficulty is encountered (the LOE display persists after start up),
or performance does not meet installation requirements, proceed to the
Troubleshooting Guide on page 99.
Point Alarm Indicator Relay
1 High Alarm 1
1 Low Alarm 2
Operation Level Space or Distance*
Empty to Full = 0 to 100% 100 to 0%
Operation Level Space or Distance*
Empty to Full = 4-20 mA 20-4 mA