FX16 Master Controller Technical Bulletin 57
Analog Outputs
The FX16 Master Controller provides four 0-10 VDC, 1.5 mA (5 mA in
a Rev. A controller), opto-isolated analog outputs. The Analog Output
objects provide the interface between the four hardware analog output
channels and the control application.
See I/O Technical Details for the complete FX16 Master Controller I/O
table.
Each of the analog outputs is ranged to give zero output if the request is
0%. Each of the analog outputs is ranged to give 10 V when the request
reaches 100%.
You can configure the analog outputs for direct or reverse acting in the
analog output object setup in FX Builder. You can limit the output
signal by high-limit (MaxOutput) and low-limit (MinOutput) values.
You can override the analog output object and its value modified via a
supervisory system if both the object and value were configured in the
control application.
Powering the Analog Outputs
FX16D and FX16X (Not Rev. A) Master Controller
You must power the four FX16 Master Controller analog outputs with
24 VAC (through terminals 79 and 80). The analog outputs can use the
same power supply as FX16 Master Controller. Analog outputs can also
be separately powered to maintain the isolation from the internal
processor (CPU) circuits.
The FX16 Master Controller analog outputs are commonly used to drive
proportional devices; therefore, you can connect these analog outputs to
all the Johnson Controls proportional actuators. See
Figure 51.
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