Endress+Hauser Flowphant T ODTT31 Operating Instructions Manual page 16

Electrical connection
A1
1
2
4
3
A3
1
2
4
3
 7 Flow switch with M12x1 connector
Item no.
A1
A2
A2'
A3
WARNING
L
Observe the following to avoid damaging the analog input of a PLC:
‣
Do not connect the active PNP switch output of the device to the 4 to 20 mA input of a PLC.
DESINA: distributed and standardized installation technology for machine tools and
manufacturing systems, →  25.
R2 = diagnostics/NC contact (for more information on DESINA, see www.desina.de)
NOTICE
The sensor tip of the device heats up once the device is connected to the power supply!
The temperature can increase to approx. 90 °C (194 °F).
‣
As the device sensor tip heats up, appropriate protective clothing must be worn!
16
R1
4...20 mA
R2
Output setting
1x PNP switch output
2x PNP switch output R1 and Rx (R2)
2x PNP switch output R1 and Rx (diagnostics/NC contact with "DESINA"
setting)
1x PNP switch output and 1x analog output (4 to 20 mA)
A2
A2'
L+
2
3
L–
L+
L–
Flow switch ODTT31, ODTT35
1
4
R1 Rx
L+
L–
A0006818