Analog inputs
The module has two analog inputs. These can optionally be assigned parameters as voltage,
current or PT100 input.
• "Voltage input" operating mode:
Parameter Value
Input range (rated value) - 10 V to + 10 V
Permissible range overstepping - 11.75 V to + 11.75 V
Resolution 16-bit (incl. sign)
Accuracy +/-0.5%
Internal resistance Ri 100 KOhm
• "Current input" operating mode:
Parameter Value
Input range (rated value) - 20 mA to + 20 mA
Permissible range overstepping - 23.5 mA to + 23.5 mA
Resolution 16-bit (incl. sign)
Accuracy +/-0.5%
Internal resistance Ri 133 ohm
• "PT100" operating mode
Parameter Value
Input range (rated value) -200°C to +259°C
Standard EN60751
Resolution 16-bit (incl. sign)
Accuracy +/- 2°C
Internal resistance Ri >> 10 kOhm
Note
The analog inputs are only enabled following the parameter assignment.
Cycle time of the analog value accumulation: 20 ms per channel
NOTICE
Protection from overvoltage
If the PT100 operating mode is selected, the hardware is protected against overvoltage.
In the event of an error the following occurs:
1. An error bit is set which is then communicated to the PLC.
2. The module is shut down.
Connectable components
12.2PP 72/48D PN and PP 72/48D 2/2A PN
NCU 1750
Equipment Manual, 10/2023, A5E45627807B AH 133
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