
FT 80 RLA Distance sensor - 068-13715 - 04.05.2009-03
Mounting and
operating instructions
29
Electrical installation
Warning: Pin 1 and pin 5 must not be connected to operational voltage as this will destroy the
FT 80 RLA sensor.
Turn the sensor connector plug according to the installation position (Illustr. 1 page 3) so that the connection cable
can be freely connected without being bent.
Insert the socket of the connection cable into the FT80 RLA connector and screw tight
For example, secure the connection cable from sliding with a cable tie .
Connect FT80 RLA as shown in Illustr. 8
Connection Colour Use
Comments
1 (WH)
White
RS485 Y/A
S1 version only
2 (BN)
Brown
+ U
B
3 (GN)
Green
As signal output Q
1
or input with optional input functions (see
Q
1
4 (YE)
Yellow
As signal output Q
2
or switching function “good target” (detec-
table object in measuring range)
Q
2
or good target
5 (GY)
Grey
RS 485 Z/B
S1 version only
6 (PK)
Pink
Q
A
+ analogue measuring value
7 (BU)
Blue
- U
B
8 (RD)
Red
Q
A
- analogue earth
Once power supply has been connected, the FT 80 RLA is ready for operation after a short stand-by delay
(< 300 ms).
For maximum precision, please allow for a heating period (approx. 5 minutes).
Illustr. 10
Connection diagram
15400127
2
+U
B
1
5
QA 4...20 mA
Q2
Q1
-U
B
BN
1
WH
5
GY
6
PK
8
RD
4
YE
3
GN
7
BU
PNP
PNP
Type
Pin 1
Pin 5
FT 80 RLA 500 -S1L8.
RS485 Y/A
RS485 Z/B
FT 80 RLA 500 -L8.
N.C.
N.C.