Sensopart FT 50 RLA 220-L8, Монтаж и эксплуатация, Страница: 56 / 122

FT 50 RLA Disctance sensor - GB - 068-13671 - 20.04.2009-05
Mounting and
operating instructions
56
No. LED pattern Status indicator „ZA” Factory setting
Description
20
Q
I
C
1 2
Q
OK
FA
„Maximum (Minimum)-Hold” (with Q
1
as control input):
Switch with
SET
ON, if maximum-hold active
OFF, if maximum-hold inactive
Inactive
(„ZA” = OFF)
If this function is activated and Q
1
= +U
B
, the maximum value of the measuring signal is deter-
mined and store.
If Q
1
is low (-U
B
), the maximum value is transmitted at the analogue output.
Example of use: determining the maximum value of a shaft.
The minimum value can be determined by inverting the output characteristics (see function no.
16 and 17).
Analogue value
Analogue output
Q
1
= +
U
B
= Sample, collect measured values
A
B A B
A
B
20 mA
+U
B
-U
B
Q
1
4 mA
20 mA
4 mA
14 mA
8 mA
1
1
2
2
1
2
Illustr. 17
15500153
Q
1
= -U
B
= Display, last maximum of
analogue signal at analogue output
21
Q
I
C
1 2
Q
OK
FA
„Difference hold” function (with Q
1
as control input):
Switch with
SET
ON, if differenz hold active
OFF, if differenz hold inactive
Inactive
(„ZA” = OFF)
When this function is activated and Q
1
= +U
B
, the difference between the minimum and maxi-
mum value of the measuring signal is determined and stored.
If Q
1
= -U
B
, the largest differential value is transmitted at the analogue output.
Example of use: Checking the contents of open containers or packages.
Illustr. 18
15500149
Analogue value
Analogue output
Q
1
= +U
B
= Sample, collect measured values
Q
1
= -U
B
= Display, last maximum of
analogue signal at analogue output.
B
A
20 mA
4 mA
4 mA
12 mA
2 mA
1
1
2
2
1
2
20 mA
+U
B
-U
B
Q
1
A
B B A
B
22
Q
I
C
1 2
Q
OK
FA
Activate factory settings:
Activate with
SET
ZA lights up whilst the key is pressed --
If the
SET
key is pressed, all the settings are reset to the factory settings. This process cannot
be reserved.