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18 Micro Motion
®
Model 2400S Transmitters
I/O Wiring – Model 2400S Analog Transmitters
Figure 3-10 Discrete output wiring – External power
Figure 3-11 Output voltage vs. load resistance – Internal power
–
+
Pull-up resistor or
DC Relay
3–36 VDC
Maximum sink current: 500 mA
+
–
Note: Refer to Figure 3-12 for recommended
resistor versus supply voltage.
CAUTION
Excessive current will damage the transmitter.
Do not exceed 36 VDC input. Terminal current must be less than 500 mA.
0
2
4
6
8
10
12
14
16
18
20
22
24
0 20000 40000 60000 80000 100000
High level output voltage (Volts)
Load resistance (Ohms)
Open circuit output
voltage = 24 VDC ±3%
OPERATING REGION