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Current Output Mode

Current Mode

The analog output operating in current mode can supply 0-20mA or 4-20mA and can be wired as either a current sink or a current source. The figure below shows the FAC-2100 wired in a current sink configuration:

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Suggested Analog Output Wiring with the Controller Configured as a Current Sink


The following figure shows the FAC-2100 wired in a current source configuration:

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Suggested Analog Output Wiring with the Controller Configured as a Current Source


The decision to use a current source or sink configuration is dependent on the installation, but typically the current source configuration is appropriate for most. Also, note that in the current sink configuration the voltage feedback monitor will be tied to ground and always read approximately zero volts.