ABB 07EA90-SI Signal Acquisition Module with Isolated Input Channels

The ABB 07EA90-SI Signal Acquisition Module with Isolated Input Channels is an analog input module from the ABB 07-series I/O family (AC31 system), acquiring analog signals from field sensors and transmitters for the AC31 controller. It is typically referenced with order number GJR5251200R0101 (07EA90-S). The module connects to the CS31 fieldbus for communication with the controller, reads 0–10 V or 0–20 mA process signals and is powered from a 24 V DC supply. It suits process monitoring and control in compact AC31 installations under tough site conditions.

Key Specifications:

• Brand: ABB
• Model: 07EA90-SI
• Order Number: GJR5251200R0101
• Type: Analog Input Module
• System: ABB 07-series (AC31), CS31 fieldbus
• Input Signals: 0–10 V DC / 0–20 mA
• Channels: 16 differential
• Resolution: 14-bit
• Supply Voltage: 24 V DC
• Bus Communication: CS31 fieldbus (RS-485)

ABB 07EA90-SI Signal Acquisition Module with Isolated Input Channels is the module that brings analog process values — temperature, pressure, level — into an AC31 control system: it reads standard 0–10 V or 0–20 mA transmitter outputs and passes them to the controller over the CS31 bus. Powered from the standard 24 V DC rail, it installs alongside the rest of the 07-series I/O with no special wiring.

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