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Set Sensor Parameter
optoNCDT 1220
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 al-
lows you to optimize the resolution for the analog
measurement range. Only the current 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 input
or via the webinter-
face.
i
With a user defined output scaling you can
use the error output, see Chap.
programmable limit switch.
The measurement object positions for
Teach 1
(minimum value) and
Teach 2
(maximum value)
have to differ from each other.
The teaching process requires a valid measuring
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. 30 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
Содержание ILD 1220-10
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