Facility Explorer FX16 - Page 51

FX16 Master Controller Technical Bulletin 51
Connecting Active Current Sensors
The FX16 Master Controller analog inputs accept a maximum of four
active current sensors (powered by the FX16) in the range 0-20 mA or
4-20 mA. You need to configure the AIs via software (and hardware
jumpers) to accept current signals. To connect a 4-20 mA sensor, you
must close the specific hardware jumpers (see Figure 42) and configure
the application through FX Builder (setting 0-20 mA, 20%
suppression).
You can connect the FX16 Master Controller to P299xAx series of
Johnson Controls pressure sensors that generate a 4-20 mA signal.
1 2 3
AGND
AI1
EXT V
4 5
AGND
AI2
6 7
AGND
AI3
8
EXT V
FX16
P299
4-20mA Active Pressure Sensor
Figure 45: Pressure Sensor Connection Diagram
Table 15: Active Current Sensors
FX16 Terminals P299xAx Cable Description
EXT V (3)
Brown Sensor Power Supply 16 V, 80 mA
AI1 (2)
Green Pressure Output 4-20 mA
Note: The numbers between the brackets are the FX16 terminal
numbers.