System Description - Input Functions
Fusion4 MSC-L
Part No.: 4418309_Rev09
3- 46
Installation & Operation Manual
Honeywell
3.8.4.2 Characteristics
3.8.5 Analog Input (AI)
3.8.5.1 Functional Description
The Analog Input (AI) supports 2-wire 4-20 mA, and can be configured
by a switch to operate in active mode or passive mode. See FIGURE 3-
28.
In the active mode, the external transmitter is directly powered from the
24 V, which is generated by the MSC-L power supply.
Item
Minimum
Typical
Maximum
Unit
Isolation voltage
-
-
3500
V
AC
Switching current (I
SW
)
-
-
10
mA
Input switching frequency
-
-
10
kHz
Input on time (T
ON
)
50
-
-
µs
Input off time (T
OFF
)
50
-
-
µs
External Device presence detec
-
tion Voltage Level
0-5, 18-30
V
External Device absence detec
-
tion Voltage Level
Floating Input (Open Contact), 9-14
V