Excellent PLC
Product Introduction
The ABB V18345-2021421001 Valve Positioner is an intelligent electro-pneumatic control device designed for precise positioning of pneumatic control valves in industrial automation systems. It ensures that the valve position accurately follows the control signal by continuously comparing the input command with the actual valve feedback and making automatic corrections through closed-loop control.
As part of ABB’s advanced TZIDC valve positioner family, this model is designed to deliver high accuracy, stable performance, and efficient operation in demanding industrial environments. It supports modern process automation requirements by improving control loop responsiveness and reducing process variability.
The V18345-2021421001 is widely used in industries such as oil and gas, power generation, chemical processing, water treatment, mining, and manufacturing, where reliable valve control is essential for safe and efficient operations.
Product Specifications
| Parameter | Description |
|---|---|
| Model | V18345-2021421001 |
| Manufacturer | ABB |
| Product Type | Electro-Pneumatic Valve Positioner |
| Series | TZIDC |
| Control Function | Automatic Valve Position Control |
| Output Signal | 4–20 mA (Two-wire technology) |
| Digital Input | 0–5 V DC (logic “0”), 11–30 V DC (logic “1”) |
| Digital Output Standard | DIN 19234 / NAMUR |
| Supply Voltage (Digital Output) | 5–11 V DC |
| Supply Pressure | 1.4–6 bar (20–90 psi) |
| Air Consumption | < 0.03 kg/h (0.015 scfm, independent of pressure) |
| Actuator Compatibility | Pneumatic Actuators |
| Control Method | Intelligent Closed-Loop Control |
| Feedback Function | Continuous Valve Position Monitoring |
| Installation Type | Field Mounted |
| Application | Industrial Process Automation |
| Operating Environment | Industrial Facilities |
| Dimensions | 168.5 × 101 × 114.5 mm |
| Weight | 1.7 kg |
Applications
● Oil and gas industry — Provides accurate valve control for refining, production, and transport systems
● Power generation plants — Supports stable regulation of steam, water, and fuel systems
● Chemical processing plants — Ensures precise control of critical process variables
● Petrochemical facilities — Improves process stability and control loop efficiency
● Water and wastewater treatment — Delivers reliable flow and treatment process control
● Mining and mineral processing — Supports valve automation in harsh industrial environments
● Pulp and paper industry — Enhances process consistency and production efficiency
● Industrial automation systems — Provides precise valve positioning across multiple applications
Advantages
● High precision control — Ensures accurate valve positioning under varying process conditions
● Low air consumption design — Improves energy efficiency and reduces operating cost
● Stable closed-loop operation — Continuously adjusts valve position for consistent performance
● Dual signal capability — Supports both analog and digital control interfaces
● Improved process efficiency — Helps optimize plant operations and reduce variability
● Strong environmental robustness — Suitable for demanding industrial applications
● Enhanced control reliability — Maintains stable performance in continuous operation
● Easy integration — Compatible with standard industrial automation systems
