Appendix B
2014-
02
17
9
Appendix B
9.1
Analog Input Module Measuring Ranges
Current Input Measuring Ranges
The measuring range of the current input can be set via AS-Interface parameter P3:
■
P3=1, nominal range 4 mA ... 20 mA
■
P3=0, nominal range 0 mA ... 20 mA
Current: 4 mA ... 20 mA
Current: 0 mA ... 20 mA
Input signal [mA]
Display on the master Input LED
> 23
32767
Flashing
1)
Above threshold
(peripheral fault)
20.001 ... 23
20001 ... 23000
On
Extended range
2)
4 ... 20
4000 ... 20000
On
Nominal range
1 ... 3.999
1000 ... 3999
On
Extended range
2)
< 1
32767
Flashing
1)
Below threshold
(peripheral fault)
Table 9.1
Measuring range 1 mA ... 23 mA
1)
: When channel is activated
2)
: Measurement accuracy corresponds to the nominal range
Input signal [mA]
Display on the master Input LED
> 23
32767
Flashes
Above threshold
(peripheral fault)
20.001 ... 23
20001 ... 23000
On
Extended range
1)
0 ... 20
0000 ... 20000
On
Nominal range
< 0
0000
On
Below threshold
Table 9.2
Measuring range 0 mA ... 23 mA
1)
: Measurement accuracy corresponds to the nominal range
Caution!
Maximum input current
At input currents > 80 mA, fault-free operation of all inputs is not guaranteed.
