ABB TZIDC V18345-1010521001 Intelligent Pneumatic Positioner

Technical Specifications

• Model: V18345-1010521001
• Input Signal: 4–20 mA two-wire current signal (adjustable range: 20–100% of nominal range; max 50 mA, min 3.6 mA, start 3.8 mA)
• Output Signal: Compressed air output (range: 0–90 psi / 0–6 bar)
• Air Consumption: ≤0.03 kg/h (0.015 scfm) at steady state, independent of air source pressure
• Travel Range:
  • Linear: 20–150 mm
  • Rotary: Up to 125° (optional 270°)
• Operating Temperature: -40°C to +85°C
• Vibration Resistance: Up to 10g (10–150 Hz)
• Communication Protocols: HART 5/7, PROFIBUS PA, Foundation Fieldbus (FF)
• Mounting: DIN rail or panel mounting
• Certifications: ATEX, IECEx, FM, CSA, DNV, GL

Functional Features

• Microprocessor Control: Automatically adjusts control parameters for optimal performance, eliminating manual tuning.
• High Precision: Positioning accuracy with <5% characteristic deviation and adjustable deadband (0.1–10%).
• Modular Design: Supports optional modules such as analog/digital position feedback, mechanical position indicators, and proximity switches.
• Communication Capabilities:
  • Real-time parameter adjustment and status monitoring via HART or fieldbus interfaces.
  • Local configuration and operation through a built-in two-line LCD and four-button panel.
• Safety Functions:
  • Fail-Safe Mode: On power/signal loss, the positioner vents air to return the valve to a predefined safe position (spring-return for single-acting actuators; dual-pressure for double-acting actuators).
  • Fail-Lock Mode: Locks the actuator in its current position during power/signal failure.
• Environmental Resistance: IP66-rated housing (with optional coating) for dust and water resistance, suitable for harsh environments.
• Self-Diagnostics: Monitors valve health, including travel accumulation, limit violations, and diaphragm leaks, providing alerts for preventive maintenance.

Application Scenarios

• Oil & Gas: Controls valve positions in refining, chemical processing, and pipeline systems to ensure safety and product quality.
• Power Generation: Regulates steam and gas flow in power plants for stable electricity supply.
• Water Treatment: Manages flow rates in wastewater treatment plants for efficient resource utilization.
• Food & Beverage: Controls media flow and pressure during production to maintain hygiene and product consistency.
• Pharmaceuticals: Ensures precise media flow control for consistent drug quality.
• Mining & Metallurgy: Operates in high-vibration environments to control conveyor systems and crusher valves.

Advantages

• Efficiency: Reduces air consumption by ≤0.03 kg/h, lowering operational costs.
• Reliability: Withstands extreme temperatures (-40°C to +85°C) and vibrations (10g/150 Hz).
• Flexibility: Modular design allows customization with various feedback and communication options.
• Safety: Fail-safe and fail-lock modes prevent system失控 (loss of control) during emergencies.
• Global Compliance: Meets international standards (ATEX, IECEx, FM, CSA) for use in hazardous areas worldwide.