Installation
22
1980
2010
-0
2
29
Electrical specification
Loop power for field device (Terminal 1):
Offload voltage
8 VDC to 23 VDC, adjustable in steps of
0.1 VDC
Current
4 mA
I
out
20 mA DC
corresponding to the NAMUR recommendation
NE 43
4 ... 20 mA/HART input (Terminal 2)
Current
4 mA
I
in
20 mA DC
corresponding to the NAMUR recommendation
NE 43
High impedance HART interface (Terminals 4, 5, 6)
Input impendance
3.7 k
for HART communication, Version
1.00.xx
5.0 k
for HART communication, Version
1.01.xx upwards
DC input impedance
infinite
Maximum terminal voltage
Across Terminals 2 + 3:
U
i
30 VDC
Across Terminals 5 + 6:
U
i
30 VDC
Table 3.1: Electrical specification
Note!
Due to the internal communication resistor, the supply voltage of the field device depends
upon the offload voltage and the current signal.
