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14 Micro Motion
®
Model 2400S Transmitters
I/O Wiring – Model 2400S Analog Transmitters
Figure 3-2 HART/analog single-loop wiring – Internal power
Figure 3-3 Basic mA output wiring – External power
HART-compatible
host or controller
For analog communications:
• 820 Ohm maximum loop
resistance
For HART communications:
• 600 Ohm maximum loop
resistance
• 250 Ohm minimum loop
resistance
–
+
Note: See Figure 3-5 for voltage and
resistance values.
VDC
R
load
–
+
+
–
CAUTION
Excessive current will damage the transmitter.
Do not exceed 36 VDC input. Terminal current must be less than 500 mA.
Note: Channel B (terminals 3 and 4)
can also be configured this way.