User Manual Section 5
GFK-2958L May 2021
Detailed Description of I/O Modules 349
5.32 Analog Input Module EP-3704
Figure 195: Analog Input
Module EP 3704
Figure 196: Connection Diagram EP-3704
The analog input module EP-3704 can detect up to 4 analog resistance thermometers. The
resolution is 16 bits per channel. A sensor can be connected to each connector in a 2-wire,
3-wire or 4-wire connection. Mixed operation using different sensors as well as different
connection methods is possible. Sensor type and temperature range are set using
parameterization. A status LED is assigned to each channel.
The inputs are protected against voltage surges and overcurrent. Voltages that exceed ±30
V may cause the destruction of the module.
The module provides individual channel diagnosis with channel related error messages.
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