What Is the ABB V18345-2010421001 TZIDC Electro-Pneumatic Positioner?
When process control demands precise valve positioning under harsh conditions, the ABB V18345-2010421001 TZIDC Electro-Pneumatic Positioner delivers reliable performance. This intelligent positioner features a configurable operator panel and mechanical position indicator, making it suitable for linear actuators per DIN/IEC 534/NAMUR and rotary actuators per VDI/VDE 3845. Its aluminum housing with IP 65 (NEMA 4X) protection withstands dust and water jets, ensuring longevity in demanding industrial environments.
Technical Specifications Breakdown
The V18345-2010421001 operates on a 4...20 mA two-wire input signal, providing a nominal output range of 4...20 mA. It accepts a supply pressure of 1.4...6 bar (20...90 psi) with air consumption below 0.03 kg/h (0.015 scfm), independent of supply pressure. The digital input accepts control voltages of 0...5 V DC for logic state "0" and 11...30 V DC for logic state "1". The digital output (per DIN 19234/NAMUR) supplies 5...11 V DC. Weighing only 1.7 kg, this unit is compact yet robust.
Industry Applications
In chemical processing plants, the ABB V18345-2010421001 provides fail-safe double-acting operation, ensuring valve closure during power loss. For oil and gas pipelines, its analog position feedback module (4...20 mA) enables remote monitoring and precise flow control. The positioner's IP 65 rating makes it ideal for outdoor installations exposed to rain or washdowns.
Installation and Setup Guidance
Mount the positioner directly to linear actuators using the NAMUR interface or to rotary actuators via VDI/VDE 3845 bracket. Pneumatic connections use 1/4-18 NPT threads, while electrical connections require a 1/2-14 NPT cable entry. Ensure supply pressure is within 1.4...6 bar and the input signal is 4...20 mA. For double-acting actuators, configure the fail-safe mode during initialization.
Maintenance and Reliability
Periodically inspect the air filter and verify supply pressure remains within 1.4...6 bar. Check pneumatic connections for leaks and clean the housing with a damp cloth. The aluminum epoxy coating resists corrosion, but avoid abrasive cleaners. For SIL-related applications, follow the manufacturer's safety manual for testing intervals.
Selection Guide and Purchasing Advice
Before purchasing the ABB V18345-2010421001, confirm your actuator type (linear or rotary) and required fail-safe action (double-acting fail-safe as standard). This model includes an analog position feedback module (4...20 mA) and no explosion protection. For digital feedback or shutdown modules, consider optional kits. SpareTechPLC stocks this positioner and can verify current lifecycle status and availability.
Frequently Asked Questions
Q1: What is the input signal range for the ABB V18345-2010421001?
A1: The input signal is 4...20 mA, two-wire, as specified in the product data.
Q2: Can this positioner be used with rotary actuators?
A2: Yes, it supports rotary actuators per VDI/VDE 3845 with the appropriate mounting bracket.
Q3: What is the protection class of the V18345-2010421001?
A3: The housing is IP 65 (NEMA 4X), made of varnished aluminum.
Q4: Does this model include analog position feedback?
A4: Yes, it includes a plug-in module for analog position feedback with a 4...20 mA range.
Q5: What is the weight of the ABB V18345-2010421001?
A5: The weight is 1.7 kg.
