eWON4002™
Installation Guide
page 19 of 35
ver 2.04
Note: pay attention to the fact that switch 1 configures AI4, switch 2 configures AI3, ....
5.7.2 Resistive Temperature Detector Inputs
These inputs are differential PT100 inputs that can be used with any classical 100 Ohm PT100 sensing element.
Specification
Value
Input range
0 to 10 VDC
Number of inputs
4
Common points
1
Resolution
12 bits (5 mV)
Precision
0.50%
Voltage input impedence
300 kOhm
Overvoltage protection
12VDC (automatic fuse)
Table 16: Standard Analog Inputs - Voltage input specification
Specification
Value
Input range
0 to 20 mA
Number of inputs
4
Common points
1
Resolution
12 bits (10 µA)
Precision
0.50%
Current input impedence
220 Ohm (1%)
Max current
25 mA
Table 17: Standard Analog Inputs - Current input specification
Specification
Value
Type
PT100 - 2 wires
Method
Current of 200µA, voltage measure
Range
0 to 100°C
Resolution
12 bits
Table 18: Analog Inputs - specification
