Bosch CL300 Manual page 94

System Modules
4.3.3 Analog Input Module, 16 Inputs
Function
Specifications
Measuring Ranges and
Maximum Input Rating
Number of Inputs
Maximum Number of Cards
per CL300
4−42
The function of the analog input module is to detect voltages and cur
rents and to measure temperatures by means of RTDs.
Analog input has its own control logic and performs data acquisition in a
cycle which is independent of the controller. The digitized data are stored
in a special memory from where they can be retrieved by the controller at
any time.
The analog input module is operated in the extended inputs/outputs (IO/
EO). It occupies one input and output word in the extended inputs/out
puts.
A detailed description of the analog input module is given in Technical
Description" P .−No. 3779.
Voltage Measuring Range:
Max. Overvoltage: Supply Volt. 20 V
Current Measuring Range: 1 mA to 20 mA
Max. Overcurrent: 70 mA
Temperature Measurement using RTDs (e.g. PT100)
50 mV to 10 V
Temperature Measuring Range
Total R for all RTDs: 4.5 kW
16 differential inputs
8 differential inputs with RTDs
32
Flexible Automation
50 mV to 10 V