Electrical Installation - Pepperl+Fuchs 3RG7256-3NQ00-PF Instructions De Service Et De Montage

Mounting and
operating instructions

Electrical installation

Warning: Pin 1 and pin 5 must not be connected to operational voltage as this will destroy the
device.
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 device connector and screw tight
For example, secure the connection cable from sliding with a cable tie .
Connect the sensor as shown in Illustr. 8
2 BN
1 WH
5 GY
6 PK
8 RD
4 YE
GN
3
7 BU PNP
Illustr. 10
15400127
Connection Colour
1 (WH) White
2 (BN) Brown
3 (GN) Green
4 (YE) Yellow
5 (GY) Grey
6 (PK) Pink
7 (BU) Blue
8 (RD) Red
Once power supply has been connected, the device is ready for operation after a short stand-by delay
(< 300 ms).
For maximum precision, please allow for a heating period (approx. 5 minutes).
3RG7256­3NQ00­PF Distance sensor ­ 068­13787 / 45­3489 ­ Stand: 03/2011
+U
B
1
5
Q A 4...20 mA
Q 2
PNP
Q 1 /IN
-U
B
Use
RS485 Y/A
+ U
B
As signal output Q or input with optional input functions (see
1
"Settings" page 32)
or switching function "good target" (detec­
As signal output Q
2
table object in measuring range)
RS 485 Z/B
Q + analogue measuring value
A
­ U
B
Q ­ analogue earth
A
Typ / Type / Ref.
3RG7256­3NQ00­PF RS485 Y/A
Pin 1 Pin 5
RS485 Z/B
Comments
Q
1
Q or good target
2
29