Emerson 2400S Manuel d'installation télécharger pdf (Page 22)

18 Micro Motion

Model 2400S Transmitters

I/O Wiring – Model 2400S Analog Transmitters

Figure 3-11 Output voltage vs. load resistance – Internal power

Figure 3-12 Recommended pull-up resistor versus supply voltage – External power

0 20000 40000 60000 80000 100000

High level output voltage (Volts)

Load resistance (Ohms)

Open circuit output

voltage = 24 VDC ±3%

OPERATING REGION

400

4400

4000

3600

3200

2800

2400

2000

1600

1200

800

6 9 12 15 18 21 24 27 30

Supply voltage (Volts)

External pull-up resistor range (Ohms)

Recommended

resistor value range

Note: When using a discrete output to drive a relay, choose external pull-up to limit current to

less than 500 mA.

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Emerson 2400S Manuel d'installation Page 22