FX16 Master Controller Technical Bulletin
52
Connecting Active Sensors Powered by 24 VAC
The FX16 Master Controller accepts active temperature, pressure, flow,
and humidity sensors providing 0-10 V or current signals powered by
24 VAC.
A second transformer (24 VAC/24 VAC, 3 VA maximum) powering
the analog input is required to maintain the insulation from the
microprocessor.
3
2
3
3
3
4
3
5
9
3
9
2
9
1
FX16
120/230VAC
24VAC
24 VAC24VAC
24V
V ~ Hot
V ~ Com
Earth
24V
123
AI Com
AI1
EXT V
45
AI Com
AI2
67
AI Com
AI3
8
EXT V
Active Sensor powered at 24 V
Figure 46: Active Sensor Powered by 24 VAC Connection Diagram
Table 16: Active Sensors Powered by 24 VAC
FX16 Terminals Sensor Cable Description
AI Com (1)
Green Common Reference
AI1 (2)
White (0-10 VDC) Signal Output
Note: The numbers between the brackets are the FX16 terminal
numbers.
IMPORTANT: Power the Analog Input with a separate transformer. Using the
power supply of the FX controller may result in a short circuit and therefore
causing the FX16 Master controller to fail.
3 VA
20 VA
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