ABB 07 EA 90-S – High-Density Analog Input Module for Process Signals

The ABB 07 EA 90-S acquires analog signals from field sensors and transmitters. This module measures 180 mm in width and 110 mm in height. It has a depth of 50 mm, so it fits standard DIN rail enclosures. The unit weighs 0.45 kg, making installation quick and effortless.

Internal Architecture and Channel Configuration

This analog input module contains three separate circuit boards inside its housing. One board handles signal conditioning, while another manages analog-to-digital conversion. The third board provides electrical isolation for each input channel. The ABB 07 EA 90-S includes sixteen differential input channels on its front panel. Each channel uses a dedicated 14-bit ADC for precise signal conversion.

Input Ranges and Field Wiring Details

You can configure each channel for voltage signals from 0 to 5V or 0 to 10V. Alternatively, you can set any channel for current signals from 0 to 20 mA. The ABB 07 EA 90-S provides thirty-two screw terminals on its front panel. These terminals accept wire gauges from 26 AWG to 16 AWG comfortably. Each input channel includes overvoltage protection up to 60V DC for safety.

Power Requirements and Communication Interface

You must supply 24V DC power to the dedicated terminals on this module. The ABB 07 EA 90-S draws 150 mA at 24V DC during normal operation. Therefore, total power consumption reaches 3.6 watts for the entire module. A 40-pin ribbon cable carries digital data to the main controller. The module updates all sixteen channels every 25 milliseconds.

Energy Storage and Environmental Tolerance

The module stores 220 µF of capacitance across its power filtering circuits. This storage smooths minor fluctuations on the 24V DC supply rail. The ABB 07 EA 90-S operates reliably from 0°C to 60°C ambient temperature. It tolerates humidity levels up to 95 percent without any condensation issues. The unit contains no backup battery, so maintenance requirements stay minimal.

Below is a complete summary of its technical specifications.

The ABB 07 EA 90-S replaces older analog input cards in Advant OCS systems directly. You do not need any special adapters or additional configuration software. This module also supports hot-swapping, so you can replace it without powering down. Therefore, you can expand your analog monitoring capacity while keeping production running.