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Installation and Mounting
optoNCDT ILR 1191
20 mA is proportional to the measured distance within a selectable distance interval.
Parameter settings can be made via the serial interface. The command to achieve this is QAx_y (where “_” is
equivalent to space, 0x20 hex.), see Chap.
10.3.14
.
Parameter settings for current output in the event of measurement failure can be made using the command
SEx, see Chap.
10.3.12
.
4
3
21
20
SE (x=2)
SE (x=1)
0
x
y
Dist.
I
[mA]
QA(x<y)
4
3
21
20
SE (x=2)
SE (x=1)
0
Dist.
I
[mA]
y
x
QA(x>y)
Case 1 x < y:
QA [mA] = 4 + 16((Dist. - x)/(y - x))
Case 2 x > y:
QA [mA] = 20 - 16((Dist. - y)/(x - y))
Fig. 11 Signal diagram analog output with x < y and x > y, definition:
x
y
i
In the DT operation mode (continuous distance measurement), the analog output is updated with each
new measurement. In between the old value is hold. In the VM operation mode (single speed measure-
ment) the analog output shortly provides the distance information. In the VT operation mode (continu-
ous speed measurement) the analog output provides the distance information.
Examples:
- The distance of a moving target is to be measured in a range of 60 m up to 220 m. At a distance of 60 m
the sensor is to output 4 mA.
Command to the sensor: QA60 220
- The distance of a moving target is to be measured in a range of 20 m up to 250 m. At a distance of 20 m
the sensor is to output 20 mA.
Command to the sensor: QA250 20
Summary of Contents for optoNCDT ILR 1191
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