What Makes the ABB V18345-2010420001 TZIDC Electro-Pneumatic Positioner Essential for Precision Valve Control?
When process plants demand accurate and reliable valve positioning under harsh conditions, the ABB V18345-2010420001 TZIDC Electro-Pneumatic Positioner delivers intelligent performance. This device combines advanced configurability with rugged construction to ensure consistent operation in critical applications.
Product Introduction
The ABB V18345-2010420001 is a TZIDC Electro-Pneumatic Positioner designed for mounting to linear actuators per DIN/IEC 534/NAMUR or rotary actuators per VDI/VDE 3845. It features a varnished aluminum case with IP 65 (NEMA 4X) protection and a mechanical position indicator. The unit accepts a 4...20 mA two-wire input and includes a connector plug for LKS adapter. It operates as a double-acting, fail-safe positioner, ensuring safe positioning upon electrical power loss. Pneumatic connections use 1/4-18 NPT threads, while cable entry is 1/2-14 NPT.
Technical Specifications Breakdown
Input and Output Signals
- Input: 4...20 mA, two-wire technology with nominal range 4...20 mA.
- Digital Input: Control voltage 0...5 V DC for logical "0" and 11...30 V DC for logical "1".
- Digital Output: Supply voltage 5...11 V DC per DIN 19234/NAMUR.
Pneumatic Performance
- Supply Pressure: 1.4...6 bar (20...90 psi).
- Air Consumption: < 0.03 kg/h (0.015 scfm), independent of supply pressure.
- Characteristic Deviation: < 0.5%, ensuring high linearity.
- Dead Band: 0.1...10%, adjustable.
- Resolution: > 4000 steps from A/D conversion.
- Sample Rate: 20 ms.
Environmental Robustness
- Housing: Aluminum with electrostatic dipping varnish, epoxy resin, stove-hardened. Case black RAL 9005 matte, cover Pantone 420.
- Protection: IP 65 / NEMA 4X.
- Weight: 1.7 kg.
- Temperature Influence: < 0.5% per 10 K.
- Vibration Influence: < ±1% up to 10 g and 80 Hz.
- Seismic: Meets DIN/IEC 68-3-3 Class III for strong earthquakes.
Industry Applications
Oil and Gas Refineries
In refineries, the V18345-2010420001 provides precise control of valve positions in critical processes. Its double-acting fail-safe ensures that valves move to a safe position during power loss, preventing hazardous conditions. The IP 65 housing withstands outdoor and washdown environments.
Chemical Processing
Chemical plants require accurate positioning to maintain reaction conditions. The positioner's configurable characteristic curve (linear, equal percentage 1:25, 1:50, or 25:1, 50:1, or 20 reference points) allows optimization for specific valve types, reducing process variability.
Power Generation
In power plants, the device's vibration resistance (< ±1% up to 10 g, 80 Hz) and seismic compliance make it suitable for turbine and boiler applications where reliability is paramount.
Installation & Setup Guidance
Mount the positioner directly to the actuator using the NAMUR or VDI/VDE 3845 interface. Ensure the air supply meets DIN/ISO 8573-1 Class 3: particle size ≤ 5 µm, particle density ≤ 5 mg/m³, oil content ≤ 1 mg/m³, and pressure dew point 10 K below operating temperature. Do not exceed the actuator's maximum operating pressure. Connect the 4-20 mA signal via the two-wire input. For HART communication, use the 20 mA signal line with an optional FSK modem. The local connector for LKS adapter enables local configuration.
Maintenance & Reliability
Routine inspection should focus on air supply quality and pneumatic connections (1/4-18 NPT). Check for leaks or contamination that could affect performance. The aluminum housing with epoxy varnish resists corrosion in industrial atmospheres. The positioner's dead band and tolerance band (0.3...10%, adjustable) can be tuned to maintain precision over time. Given its robust design, the device offers long service life with minimal maintenance.
Compatibility & Integration
The V18345-2010420001 supports HART Protocol 5.1 for digital communication over the 4-20 mA loop. It also features a local connector for LKS adapter (local communication interface). The digital output follows DIN 19234/NAMUR, making it compatible with standard control systems. The device meets EMC Directive 89/336/EWG and EC Directive for CE conformity, ensuring electromagnetic compatibility in industrial environments.
Selection Guide & Purchasing Advice
Before purchasing, verify that the actuator type (linear or rotary) matches the mounting interface. Confirm the required fail-safe action (double-acting) and explosion protection needs (this model is without). Ensure the air supply meets the specified quality standards. The V18345-2010420001 is available from SpareTechPLC, a trusted supplier of industrial automation parts. Contact them to confirm current lifecycle status and availability.
Frequently Asked Questions
Q1: What is the input signal range for the V18345-2010420001?
A1: The input is 4...20 mA, two-wire technology, with nominal range 4...20 mA.
Q2: Can this positioner be used in hazardous areas?
A2: This model (code 0) does not include explosion protection. For hazardous areas, select a version with appropriate protection.
Q3: What communication protocols does it support?
A3: It supports HART Protocol 5.1 and local LKS adapter communication.
Q4: What is the air consumption of the device?
A4: Air consumption is less than 0.03 kg/h (0.015 scfm), independent of supply pressure.
Q5: How does the positioner respond to power failure?
A5: It is double-acting, fail-safe, meaning it moves to a safe position upon electrical power loss.
