USER MANUAL 1.10 | DC1000 DIALOG-CONTROLLER
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4.1.3. Analog inputs
The module is equipped with two unipolar analog inputs protected by diodes. Power supply to the sensors is
from an external source. The analog current and voltage values are accessible via the CODESYS controller
configuration.
Input channel data
Current measurement
Nominal input current value
0 … 20 mA
Maximum input current value
40 mA (U
e
= +24 V)
Voltage measurement
Nominal input voltage value
0 … 10 V
Maximum input voltage value
12 V
General data
Input filter, 1
st
order
= 1 ms for current;
= 10 ms for voltage measurement
Conversion method
Successive approximation, no error codes
Resolution
10 bit; 1 LSB = 19.5 µA / 9.77 mV
Accuracy within the 0...50 °C
temperature range
±1 %
Pole reversal protection
Yes
Sampling rate
Approx. 1 ms
NOTICE
Due to internal protective circuitry, the load is nonlinear for current operation.
Analog IN – X10/13 pin assignment
Pin
Signal
Description
1
AIN
Analog input
2
GND
Signal ground
3
Shield
Shield
The maximum value will be indicated if no sensor is connected to an analog input.
NOTICE
Shield support in switchgear cabinet is urgently recommended for rea-
sons of EMC!
