Endress+Hauser OTR31 Operating Instructions Manual page 13

Temperature switch OTR31, OTR35
1
2
3 4
A3
1
2
4
3
 4 Pin assignment on M12x1 connector
Item no.
A1
A2
A2'
A3
A4
A4'
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, →  15.
R2 = diagnostics/NC contact (for more information on DESINA, see www.desina.de)
R1
R1
4...20mA
Output setting
1x PNP switch output
2 x PNP switch output R1 and m (R2)
2x PNP switch output R1 and m (diagnostics/NC contact for "DESINA"
setting)
1x PNP switch output and 1x analog output (4 to 20 mA)
1x analog output (4 to 20 mA) and 1x PNP switch output m (R2)
1x analog output (4 to 20 mA) and 1x PNP switch output m
(diagnostics/NC contact with "DESINA" setting)
A2'
L+
2
3
L–
A4
A4'
L+
2
3
L–
Electrical connection
1
4
R1 Rx
1
4
Rx
4...20mA
L+
L–
L+
L–
A0043603
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