GE VersaMax IC200PWR001 User Manual page 337

10
IC200ALG260
Analog Input Module, 12 Bit Voltage/Current 8 Channels
Scaling
The following graphs illustrate the relationship between the input voltage or
current measured at the field terminals and the data that is output by the
module.
Count and Input Current
24
mA
20
16
12
8
4
0
0
The following equation can be used to calculate counts values:
Counts = (Current in mA - 4mA) x (32767 / 16.35mA
For a change in the reported count value to be seen, input current must be
increased by at least 4μA. If the module receives an increase less than 2.5mV,
the previous count value is still reported. For example:
10-22 VersaMax Modules, Power Supplies and Carriers User's Manual
8192 16384
Count
Current Count
12.190mA 16384
12.192mA 16384
12.194mA 16392
24576 32767
)
4µA = 8 counts
12.202mA
12.198mA
16408
12.194mA
16400
12.19mA
16392
16384
GFK-1504N