Product Overview

• Part No: AS111-1
• Brand: ALSTOM

• Category: Analog Output ModuleAS111-1 is a standard Eurocard rack-mounted analog output module matched with ALSTOM SIRE turbine control platform. The module receives digital commands transmitted by the main control board, converts digital signals into standard continuous analog signals (4–20mA / 0–10V). Output signals are sent to servo actuators, electro-hydraulic converters and regulating valves to realize closed-loop adjustment of turbine valve position. It undertakes the signal conversion link between digital controller and field hydraulic execution equipment, and supports multi-channel independent analog output. It is a vital replacement spare component for overhaul and renovation of steam turbine control systems in thermal power plants.

• 
  

Core Features

• Multi-channel high-precision analog signal output, support configurable current and voltage signal modes
• Built-in signal isolation and filtering circuit, effectively restrain electromagnetic interference in power plant cabinets
• High linearity signal conversion, guarantee stable valve regulation accuracy during turbine dynamic operation
• Onboard hardware monitoring circuit, with fault detection for abnormal output status
• Standard front pull-out Eurocard structure, convenient plug-and-play replacement inside the rack
• Optimized PCB layout, conformal coating optional for damp industrial environments

• Passed thermal cycling, vibration and EMC reliability testing, adapt long-term continuous operation

• 
  

Technical Specifications

• Supply Voltage: 24VDC
• Standard Output Signal: 4–20mA, 0–10VDC
• Operating Temperature: -20°C ~ +60°C
• Storage Temperature: -40°C ~ +85°C
• Installation: Standard subrack slot mounting inside turbine control cabinet

• Protection Class: IP20

• 
  

Compatibility & Application

• Compatible with ALSTOM SIRE series steam turbine governing control rack, matched with AH116-2 main control board
• Widely applied in thermal power plant turbine control cabinet maintenance and transformation projects
• Used for turbine main steam valve, regulating valve servo drive signal output, operating parameter analog transmission