ABB V18345-2010420001 TZIDC Electro-Pneumatic Positioner for Precise Valve Control

Reliable Valve Positioning for Critical Processes

When process control demands precise actuator positioning under harsh conditions, the ABB V18345-2010420001 TZIDC electro-pneumatic positioner delivers consistent performance. This intelligent positioner combines a rugged aluminum housing with IP65/NEMA 4X protection, making it suitable for demanding industrial environments. Its double-acting, fail-safe output ensures the valve moves to a safe position during power loss, minimizing process risks.

Technical Specifications Breakdown

Input and Communication

The V18345-2010420001 accepts a standard 4...20 mA two-wire input signal. It supports HART Protocol 5.1 communication via the 20 mA signal line, enabling remote configuration and diagnostics. A local connector for the LKS adapter allows on-site programming.

Pneumatic Performance

Supply pressure ranges from 1.4 to 6 bar (20 to 90 psi). Air consumption remains below 0.03 kg/h (0.015 scfm), independent of supply pressure, reducing operating costs. Pneumatic connections use 1/4-18 NPT threads.

Control Accuracy

Characteristic deviation stays under 0.5%, with an adjustable dead band of 0.1 to 10%. The A/D conversion resolution exceeds 4000 steps, and the sample rate is 20 ms. These specs ensure responsive and accurate positioning.

Environmental Resilience

The positioner withstands vibration up to 10 g at 80 Hz with less than ±1% influence. Ambient temperature changes cause less than 0.5% drift per 10 K. It meets DIN/IEC 68-3-3 Class III seismic requirements.

Industry Applications

Oil and Gas Processing

In refineries and gas plants, the V18345-2010420001 controls valves on pipelines and separators. Its fail-safe double-acting output ensures emergency shutdowns occur reliably. The HART communication allows remote monitoring from control rooms.

Chemical Manufacturing

Chemical reactors require precise flow control. The positioner's linear or equal percentage characteristic curve, configurable with 20 reference points, matches valve trim to process needs. The IP65 housing protects against corrosive atmospheres.

Installation and Setup Guidance

Mount the positioner on linear actuators per DIN/IEC 534/NAMUR or on rotary actuators per VDI/VDE 3845. Use the mechanical position indicator for visual feedback. Connect instrument air free of oil, water, and dust according to DIN/ISO 8571-1 Class 3. Ensure supply pressure does not exceed the actuator's maximum operating pressure. Wire the 4...20 mA input using the connector plug for the LKS adapter. Configure the characteristic curve and dead band via HART or the local interface.

Maintenance and Reliability

Regularly inspect the air supply for cleanliness to prevent nozzle blockage. Check the aluminum housing and cable gland for seal integrity. The electrostatic dipping varnish with epoxy resin resists corrosion. Verify the digital input logic levels: 0...5 V DC for state "0" and 11...30 V DC for state "1". Periodically test the fail-safe action to confirm proper operation. With minimal moving parts and low air consumption, this positioner offers long service life in continuous duty.

Buying Guide

Before ordering the ABB V18345-2010420001, confirm your actuator type (linear or rotary) and mounting requirements. Verify the supply pressure range and pneumatic connection threads (1/4-18 NPT). If you need analog or digital position feedback, order the optional module separately. Contact BluePLC Industrial for current availability and replacement options. Our team can help verify compatibility with your existing control system.