Description

The ABB PFEA112-20 (Order Code: 3BSE030369R0020) is an 8-channel analog output (AO) module designed for the ABB AC 800M family of programmable automation controllers (PACs), widely used in power generation, oil & gas, water treatment, and industrial process control. This module converts digital control signals from the AC 800M CPU into precise analog outputs—typically 4–20 mA current loops or **0–10 V voltage signals—to drive field devices such as control valves, variable frequency drives (VFDs), damper actuators, and speed governors.

Engineered for high reliability and accuracy, the PFEA112-20 delivers ±0.1% full-scale accuracy with 16-bit resolution, ensuring smooth and stable process control even under dynamic load conditions. It supports both single-ended and redundant power supply configurations, and can be deployed in non-redundant or redundant I/O stations within a fault-tolerant AC 800M architecture. The module features comprehensive diagnostics—including open-circuit detection, overrange alerts, and channel-level health status—accessible via ABB’s Automation Builder or Control Builder M engineering tools.

As part of ABB’s extended lifecycle support program, the PFEA112-20 remains a go-to solution for modernization projects, brownfield expansions, and spare parts replacement in legacy ABB systems like Symphony Plus and Industrial IT.

ABB PFEA112-20 3BSE030369R0020

Technical Specifications

Main Features and Advantages

✅ High Precision & Stability: With ±0.1% accuracy and low drift over temperature, the PFEA112-20 ensures consistent actuator positioning—critical for combustion control, feedwater regulation, or pH dosing.

✅ Flexible Output Configuration: Each of the 8 channels can be independently configured via software for current or voltage output, eliminating the need for external signal conditioners.

✅ Advanced Diagnostics: Real-time monitoring of output validity, wire break (open loop), and overrange conditions enables predictive maintenance and reduces unplanned downtime.

✅ Seamless ABB Ecosystem Integration: Fully supported in Control Builder M, allowing drag-and-drop configuration, online diagnostics, and firmware updates without system interruption.

✅ Robust for Industrial Environments: Designed to withstand electrical noise, vibration, and temperature fluctuations common in power plants, refineries, and wastewater facilities.

✅ Redundancy-Ready Architecture: When installed in a redundant I/O station (e.g., with PFEN101 base), the PFEA112-20 supports hot-swap and automatic failover—ensuring continuous operation during module replacement.

Application Field

The ABB PFEA112-20 is extensively used in:

• Thermal & Hydro Power Plants: Controlling turbine guide vanes, boiler fuel valves, and excitation setpoints.

• Oil & Gas Processing: Modulating pressure control valves, compressor anti-surge actuators, and chemical injection pumps.

• Water & Wastewater: Regulating chemical dosing pumps, sludge scraper speeds, and UV disinfection intensity.

• Pulp & Paper Mills: Managing steam pressure, dryer cylinder temperatures, and coating thickness via precision analog signals.

• Industrial Automation: Providing setpoints to VFDs, servo drives, and pneumatic positioners in manufacturing lines.

Its compatibility with ABB Symphony Plus makes it especially valuable in utility retrofits where legacy INFI 90 systems are being migrated to modern AC 800M platforms.

ABB PFEA112-20 3BSE030369R0020

Related Products

• PFEA111-20(3BSE030368R0020): 4-channel version of the same AO module

• PFIA112-20(3BSE030370R0020): 8-channel analog input counterpart

• PFEN101: Redundant I/O base unit for PFEA112-20 in fault-tolerant systems

• TK801/TK802: Standard I/O bases for single-controller applications

• AC 800M CPU (e.g., PM864, PM866): Controller that communicates with PFEA112-20 via Profibus or internal bus

• TB842/TB843: Terminal blocks for field wiring connection to PFEA112-20

• 3BSE030369R0010: Older revision (check compatibility before replacement)