07EA90-SI: Product OverviewThe 07EA90-SI is a power supply module designed for ABB’s (formerly Bailey Controls) INFI 90 distributed control system. This critical component is installed in the power supply slot of an INFI 90 Process Control Unit (PCU) and is responsible for converting incoming AC line voltage to the precise, regulated DC voltages required by the system’s intelligent modules, including controllers, I/O modules, and communication interfaces. The module ensures stable, clean power delivery to support the reliable operation of the control system in industrial environments.The power supply features a robust design with overvoltage and overcurrent protection to safeguard the sensitive electronic components within the PCU. It is engineered to operate in the typical temperature and electrical noise conditions found in industrial settings such as power generation plants and process facilities. The module supports redundant configuration when used with a companion unit and a redundancy control module, allowing for continuous system operation even if one power supply fails.
ABB 07EA90-SI
07EA90-SI: Technical Specifications
•• Model Number: 07EA90-SI
•• Manufacturer: ABB (Bailey Controls)
•• Product Type: Power Supply Module
•• Compatible System: INFI 90 DCS
•• AC Input Voltage: 120V AC / 240V AC (switch selectable), 50/60 Hz
•• DC Output Voltages:
•• +5 VDC (logic power)
•• +15 VDC (analog power)
•• -15 VDC (analog power)
•• Output Power: 150 Watts (total)
•• Efficiency: >75%
•• Redundancy: Supports N+1 redundancy with appropriate redundancy control module
•• Protection: Overvoltage and overcurrent protection on all outputs
•• Status Indicators: LED indicators for power good and fault conditions
•• Operating Temperature: 0°C to 60°C
•• Cooling: Convection cooling (no fan)
•• Safety Standards: UL 508, CSA 22.2, IEC 61131-2
ABB 07EA90-SI
Core Features & Customer ValueThe module’s primary value is providing highly reliable and clean power, which is the foundation for the stable operation of the entire PCU. Voltage fluctuations or electrical noise on the power rails can cause unpredictable behavior in digital logic and analog measurement circuits. The 07EA90-SI’s robust regulation and filtering mitigate these issues, leading to higher system availability and reduced nuisance faults. For maintenance teams, the LED status indicators provide immediate local diagnostics, allowing for quick assessment of the power supply’s health.The capability for redundant configuration is a critical feature for high-availability applications. In a redundant setup, if the primary power supply fails, the secondary unit takes over the load without interruption to the control process. This is essential in continuous process industries where an unplanned shutdown can result in significant production loss or safety concerns. The hot-swappable design (in redundant systems) allows for the replacement of a faulty unit without powering down the PCU, further minimizing downtime.Typical ApplicationsIn a coal-fired power plant, the 07EA90-SI powers a PCU controlling the burner management system. The reliable power ensures continuous monitoring of flame scanners, fuel valves, and critical temperatures, preventing boiler trips and enabling safe, efficient operation.In a water treatment facility, the module supplies power to a PCU managing chemical dosing and filtration processes. Stable analog power is crucial for the accurate measurement of pH, turbidity, and flow rates, ensuring treated water meets quality standards.
We've got you covered
We give you access to a global supply of automation parts at your fingertips, ensuring that manufacturers around the world can avoid unnecessary downtime and continue to do what they do best – making our world possible.
Full 12-month warranty on all components
Dedicated after-sales support
Same-day dispatch on 1000s of parts
All units are fully tested
Continue Searching
We're here when you need us
What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
Full 12-month warranty on all components
Full 12-month warranty on all components
