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Set Sensor Parameter
optoNCDT 1320
7.5.3
Analog Output Scaling
7.5.3.1
Output Scaling
- Max. output range: 4 mA ... 20 mA
- Output gain
D
I
OUT
: 16 mA = 100 % MR
- Error value: 3.0 mA (±10 µA)
The teaching scales the analog output (4 to
20 mA) for a part of the measuring range. This
allows you to optimize the resolution for the
analog measurement range. Only the cur-
rent and error output will be affected by the 2
point calibration. Therefore you define a new
start and end for the measurement range. This
teaching procedure can be performed live via
the
select
key, the
multifunctional in-
put
or via the webinterface.
i
With a user defined output scaling you
can use the error output, see Chap.
5.4.8
,
as a programmable limit switch.
The measurement object positions for
Teach 1
and
Teach 2
have to differ from each other.
The teaching process requires a valid measu-
ring signal. The teaching process is terminated
at
- no target,
- target not evaluated,
- to close to the sensor - beyond SMR or
- to far from the sensor - beyond EMR.
Fig. 34 Default characteristic (black), reverse,
user defined characteristic (red)
SMR
EMR
20 mA
4 mA
3 mA
64877 65520 262078
643
0
262077
Analog
output
Measuring range
Digital value
LED
State
Error
output
Error
output
Default characteristic
Measuring object
within range
SMR
EMR
20 mA
4 mA
3 mA
Analog
output
262078
49635
262077
Digital value
User defined characteristic
Teach 2
Teach 1
20240
Error
LED
State
Measuring object
Measuring object within range
Error
Error
Error