System Description - Input Functions
Fusion4 MSC-L Part No.: 4418309_Rev09
3- 50 Installation & Operation Manual
Honeywell
The following RTD type is accepted.
The selection of 3-wire or 4-wire RTD type is performed in the software,
but the RTD must be connected to the circuit as displayed in FIGURE 3-
29.
3.8.6.2 Characteristics
3.8.7 Digital Input AC (DI AC)
3.8.7.1 Functional Description
The function of the Digital Input AC (DI AC) is to convert high-voltage
switched AC into a signal that can be used by the controller to ensure
the specific functionality required.
FIGURE 3-30 illustrates the simplified block diagram of the DI AC
connections.
RTD type Connection Alpha co-efficient
PT100 3-wire or 4-wire
(Kelvin connection)
IEC 60751
(0.385 /°C / 0.214 /°F)
DIN 43760 1/3 DIN
DIN 43760 1/5 DIN
DIN 43760 1/10 DIN
Item Minimum Typical Maximum Unit
Isolation - 500 - V
AC
Temperature measurement
range
-200 - +250 °C
MID temperature
measurement range
-200 - +250 °C
Measurement error
(-200 ... +250°C/ -328 ...
+482°F)
- - ±116 m
- - ±0.3 °C
RTD current source 50 500 1500 µA
RTD cable length - - 150 m
Conversion time - - 1.0 s
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