Electrical Connection; 4-Wire Pin Assignment - TESTO 6446 Instruction Manual

Electrical connection

5.8
Disconnect the system from the power supply when connecting.
WARNING
Note

4-wire pin assignment

5.8.1
If you use the standard connection, the following pin assignment applies to
the connecting cable or the pin assignment directly on the sensor.
Pin no.
1
2
3
4
24
The instrument may only be installed by a qualified
electrician. Follow the national and international regulations
regarding the installation of electrical engineering systems. The
voltage supply is to be laid out in accordance with EN50178,
SELV, and PELV. To meet the "limited voltage" requirements
according to UL 508, the instrument must be supplied from a
galvanically isolated source and protected against short-
circuits by means of an overcurrent device.
If you are connecting the sensor directly or using a 4-wire
connecting cable, proceed as set out in 5.8.1.
If you are using the optionally available 5-wire connecting cable
with potential-free pulse output (
out in 5.8.2 when connecting the sensor.
2
1
3
4
Wire colour
Brown
White
Blue
Black
see 4.2.2), proceed as set
BN L+
WH OUT2/InD
BK OUT1
BU L
Assignment
+L (19-30 V DC)
/InD
OUT2
0 V DC (GND)
OUT1