Facility Explorer FX16 - Page 55

FX16 Master Controller Technical Bulletin 55
FX16X Rev. A Master Controller
The eight digital inputs of the FX16 Master Controller (Rev. A) are
powered internally by the 24 VAC voltage power supply of the
controller. The power supply of the FX16 Master Controller (Rev. A) is
isolated from the internal processor (CPU) circuits so that the isolation
of the digital inputs is maintained. Terminal 35 is not connected
internally and Terminal 34 can be used as an extra DI Com connection.
3
2
2
1
2
4
2
3
2
2
3
3
3
4
3
5
9
3
9
2
9
1
FX16
120/230VAC
24VAC
DI1 DI2
DI8
no
connection
DI V ~ Com
DICom DICom DICom
24V
V ~ Hot
V ~ Com
Earth
24V
Figure 49: Powering the Digital Inputs - FX16X Rev. A
Digital Counters
The FX16 Master Controller features a Digital Counter object
configurable in FX Builder to the DI channels. When the signals are not
filters, the Digital Counter counts up to 50 Hz transitions on digital
input signal. For unfiltered signals, the signal must be closed for at least
10 ms and opened for at least 10 ms.
The maximum frequency is 10 Hz on filtered signals. For filtered
signals, the signal must be closed for at least 50 ms and open for at least
50 ms. The Digital Counter object setup configures the filter.
Using Analog Inputs as Digital Inputs
If you need more than eight available digital inputs, the FX16 Master
Controller allows you to use an analog input as digital input.
15 VA