© Brüel & Kjaer Vibro GmbH/
2 mm ds822 ATEX / 8.12.16 / technical specifications subject to change / C105507.001/V02
l
23
EN
6
Functional check
Observe the safety information in chapter Safety!
6.1
Quick check
After installing the displacement sensor system, you can check the measured values using a
digital multimeter (R
i
≥ 100 kΩ). If the displacement sensor system is in correct operating condi-
tion, you will see the following values:
If you the readings you receive deviate from these, proceed in accordance with the following
recommended sequence:
6.2
Troubleshooting
Check the output signal
a.
The output signal U
SIG
< -18 V. The distance between target and sensor tip lies outside the
measuring range. Adjust the sensor so that it is nearer the target.
b.
The output signal U
SIG
> -2 V.
Possibly the distance between target and sensor tip is too small. Adjust the sensor to
increase the distance to the target and re-check U
SIG
. If the output signal does not change,
the displacement sensor system is defective. Follow these additional steps.
Operating voltage U
B
Output signal U
SIG
Load resistance of
the electronic diag-
nostic system R
L
Operating current I
B
-24 V DC
-2…-18 V DC
>100 kΩ
-8.0 mA ±1 mA
1
Sensor
ds821-
od 130
2
3
4
-DC
COM
SIG
0,4...
max.
2,4 mm
5
6
7
8
0 V
-24 V
COM
SIG
A /
RC-60
VC-6000
B /
RC-60
/ Xx01
1
2
3
4
0 V
-24 V
COM
SIG
