7ML19985AN02 SITRANS LU10 – INSTRUCTION MANUAL Page 25
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Operation
System Performance Evaluation
For initial RUN mode entry (or after any programming alteration), do not use the SITRANS
LU10 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 LU10 takes measurements and
calculates the Reading.
When a Transducer (P004) value is entered for Point # 1 only, the Reading and other data
is displayed continuously. When Transducer values are entered for more than one Point
Number, Readings and other data scroll display for each Point Number.
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).
3. Press to observe the mA output value for the Point Number displayed (Auxiliary
Reading).
4. Press to observe the
Failsafe Time Left
(time left in percent before failsafe
activation).
Each time a valid measurement is made for the Point Number displayed, 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 LU10 flashes "LOE" in the Reading
display.
POINT # ALARM INDICATOR LU SAM# RELAY #
1-10 Hi Alarm 1 1-10
1-10 Lo Alarm 1 11-20
1-10 Hi Hi Alarm 2 1-10
1-10 Lo Lo Alarm 2 11-20
OPERATION LEVEL SPACE or DISTANCE*
Empty to Full = 0 to 100% 100 to 0%
* Objects close to the transducer face (0%) are not detectable.
OPERATION LEVEL SPACE or DISTANCE*
Empty to Full = 4–20 mA 20–4 mA
* Objects close to the transducer face (4 mA) are not detectable.
Note: All associated data is supplied to the Peripheral Communications terminals (42
and 43). If a BIC-II is connected, refer to
Technical Reference
BIC-II Support for
message format and protocol information.
mA
5
8
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