Emerson MICRO MOTION 1700 - Manual (Page 111)

CAUTION!
Exceeding 30 VDC can damage the transmitter. Terminal current must be less than 500 mA.
Recommended pull-up resistor versus supply voltage Figure 9-19:
3600
3200
2800
2400
2000
1600
1200
800
0
5 10 15 20 25 30
Supply voltage (Volts)
External pull-up resistor range (Ohms)
4000
4400
9.5 Discrete input wiring
9.5.1 Internally powered discrete input wiring
I/O wiring for Model 2700 transmitters with configurable input/outputs
Installation Manual 107