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
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