Yokogawa AIP831-101

Product Overview

Desktop dedicated eight-loop process control operator keyboard for Yokogawa CENTUM VP / CS3000 distributed control system HIS human interface stations, equipped with touch-sensing control knobs for simultaneous multi-loop PID parameter adjustment, integrated audio alarm feedback and dual USB data communication ports for workstation connection.
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Description

Technical Specifications

  • Control Loop Capacity: 8 independent simultaneous process control loop adjustment channels
  • Control Input Hardware: 8 touch-sensing rotary control encoders with capacitive touch detection
  • Communication Interface: Dual USB 2.0 Full-Speed Type-A ports (bus-powered from DCS workstation HIS PC)
  • Input Power Supply: 5VDC ±5% USB bus power input
  • Maximum Current Draw: 1.0A full function simultaneous operation
  • Integrated Audio Hardware: Built-in electronic piezoelectric alarm buzzer + USB stereo speaker output channel
  • Mounting Compatibility: VESA standard 75×75 wall/mount bracket mounting support
  • Operating Temperature Range: 5°C ~ +40°C
  • Storage Temperature Range: -20°C ~ +60°C
  • Operating Humidity Range: 20% ~ 80% RH non-condensing
  • Installation Safety Class: IEC 61010-1 Installation Category I (low-voltage computer peripheral device)
  • Exterior Housing Color: Matte black (Munsell N1.5 industrial standard finish)
  • Net Weight: 2.0kg without VESA mounting bracket; 2.5kg fully assembled with bracket
  • Certifications: CE, UL, FCC Class B, RoHS compliant

Functional Features

  1. 8 capacitive touch rotary encoders provide independent adjustment of setpoint, PID gain, integral and derivative values for eight separate DCS control loops simultaneously
  2. Touch sensor trigger function highlights corresponding loop graphic panel on CENTUM VP HIS workstation screen upon physical knob contact
  3. Dual USB 2.0 ports carry control command data and digital alarm audio signal to DCS operator station
  4. Integrated piezo buzzer delivers local audible alarm notification independent of workstation speaker system
  5. Model suffix -1 designates integrated mode selection switch for operator auto/manual loop control mode switching
  6. VESA standard mounting bracket supports desktop placement, wall mounting and control console integration installation
  7. Plug-and-play USB bus-powered design eliminates separate external DC power supply hardware
  8. Firmware updatable via USB connection for compatibility with future CENTUM VP DCS software version releases

Working Principle

Dual USB cables establish data and audio communication links between AIP831-101 and CENTUM VP HIS workstation industrial PC. Capacitive touch sensors integrated within each rotary encoder detect human finger contact, transmitting trigger signals over USB to the DCS workstation to activate corresponding loop screen highlighting. Rotary encoder rotation generates pulse count signals proportional to adjustment magnitude for real-time PID parameter modification command transmission. Internal digital audio decoder receives workstation alarm audio data via USB to drive on-board piezoelectric buzzer for local audible alarm feedback. On-board microcontroller manages all touch sensing, encoder pulse counting and USB data packet transmission operations.

Material & Structural Composition

  • Outer Housing: Matte black injection-molded ABS plastic anti-reflection enclosure
  • Control Knobs: Polyurethane rubber-coated rotary encoders with embedded capacitive touch sensor layers
  • Internal Circuit Board: Double-layer FR4 PCB with ESD protection circuitry for USB communication ports
  • Audio Components: High-frequency piezoelectric buzzer module with noise suppression damping gasket
  • Mounting Hardware: Standard steel VESA 75×75 mounting bracket with anti-slip rubber base pads

Advantage Highlights

  1. Simultaneous eight-loop adjustment capability drastically reduces multi-loop process tuning operation time for plant operators
  2. Capacitive touch screen highlighting function eliminates manual loop navigation mouse operation during parameter tuning
  3. Bus-powered USB design removes separate power supply wiring requirements inside DCS operator control rooms
  4. Integrated local alarm buzzer maintains audible fault notification during workstation audio output failure conditions
  5. VESA universal mounting enables flexible integration with industrial control consoles, desktop stands and wall-mounted operator stations
  6. Full compatibility with all CENTUM VP and legacy CS3000 DCS workstation hardware without additional interface adapters

Applicable Industries

Petrochemical refining plant DCS control rooms, thermal power generation central control stations, pharmaceutical batch process manufacturing, pulp & paper continuous process control, natural gas processing plant operator interfaces

Installation Mandatory Requirements

  1. Connect both supplied USB Type-A cables directly to rear USB ports of CENTUM VP HIS workstation PC; USB hub connection prohibited
  2. Install unit on horizontal flat control console surface or vertical VESA mounting bracket with maximum 15° forward tilt angle
  3. Maintain minimum 10cm clearance around unit perimeter for heat dissipation and unobstructed knob operation
  4. Operate only inside air-conditioned control rooms maintaining 5°C ~ 40°C constant ambient temperature
  5. Do not install unit adjacent to high-frequency electrical equipment generating capacitive touch sensor interference

Operation & Maintenance Precautions

  1. Clean touch encoder surfaces only with dry anti-static microfiber cloth; liquid cleaners damage embedded capacitive sensor layers
  2. Disconnect USB cables during workstation power cycling to prevent firmware file corruption
  3. Conduct annual firmware update procedure to maintain full compatibility with latest CENTUM VP DCS software revisions
  4. Avoid exposure to chemical solvent vapors inside control room environments to prevent housing plastic degradation
  5. Store unit in low-humidity temperature-controlled cabinet during long-term equipment decommissioning periods
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