GAI-Tronics 12584-002 I/O Control Module User Manual
Page 10
Pub. 42004-388B
Model 12584-002 I/O Control Module
Page: 10 of 15
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04/07
TB11 - Analog Input Connections
TB11 is used for monitor sensors or dc voltage. An industry standard for sensors is to produce a 4 to 20
milliamp (mA) output to represent a range from no signal to full scale signal, with 0 mA being an
indication of an error condition. A 250-ohm resistor will produce a 1 to 5 V dc signal when 4 to 20 mA
flows through it resulting in a signal that can be connected directly to the input, assuming it is not greater
than 5 V dc. For voltages greater than 5 V, a resistor voltage divider network must be installed to reduce
the voltage level present on the input.
Figure 4. Typical Analog Input Wiring Diagram
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