Product Overview
When control valve positioning demands precision and reliability in harsh environments, the ABB V18345-1020121001 Electro-Pneumatic Positioner delivers. This compact, rugged device integrates proven technology with a wide operating temperature range of -40 to +85 °C, making it suitable for extreme industrial conditions. Its single-acting fail-safe design ensures the actuator vents or blocks upon electrical power failure, enhancing process safety.
Technical Specifications Breakdown
The V18345-1020121001 operates on a 4...20 mA input signal with two-wire technology, supporting split range configuration between 20% and 100% of nominal range. Key electrical parameters include a maximum input of 25 mA / 30 V and a minimum start current of 3.8 mA. The digital input accepts 24 V DC (12...30 V DC) control voltage, with logical "0" at 0...10 V DC and logical "1" at 12...30 V DC. Output pressure range is 0...6 bar (0...90 psi), with air capacity reaching 13 kg/h (10 Nm³/h) at 6 bar supply pressure. The device features a resolution over 4000 steps and a sample rate of 20 msec, ensuring precise positioning.
Industry Applications
This positioner excels in chemical processing, oil and gas, and power generation where accurate valve positioning is critical. For linear actuators conforming to DIN/IEC 534/NAMUR or rotary actuators per VDI/VDE 3845, the V18345-1020121001 provides robust performance. Its HART Protocol 5.1 communication via the FSK module enables remote monitoring and configuration, reducing manual intervention and downtime.
Installation & Setup Guidance
Mount the positioner on the actuator using the provided aluminum case with IP 65 (NEMA 4X) protection. Electrical connections use 1/2-14 NPT cable thread, while air pipe connections are 1/4-18 NPT. The single push-button operating philosophy simplifies commissioning. Ensure instrument air meets DIN/ISO 8573-1 Class 3 standards for oil, water, and dust content. Supply pressure must stay within 1.4...6 bar (20...90 psi) and never exceed the actuator's maximum operating pressure.
Maintenance & Reliability
Routine inspection of air supply quality and electrical connections maintains reliability. The robust aluminum housing withstands vibration up to 10 g at 80 Hz and meets seismic requirements per DIN/IEC 68-3-3 Class III. Ambient temperature influences output by ≤0.5% per 10 °C change, ensuring stable performance. The mechanical position indicator provides visual confirmation without power.
Compatibility & Integration
The V18345-1020121001 integrates seamlessly with DCS and PLC systems via the 4...20 mA signal line and optional HART communication. The local LKS adapter allows direct configuration. It supports single or double acting actuators with configurable fail-safe action. The plug-in analog position feedback module (4...20 mA) enables remote position monitoring.
Selection Guide & Purchasing Advice
Before ordering, verify your actuator type (linear or rotary) and required fail-safe action. The V18345-1020121001 is configured for single-acting fail-safe with analog feedback. Confirm explosion protection needs (this variant is without). SpareTechPLC offers this ABB positioner with expert support to ensure correct selection for your application. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Frequently Asked Questions
What is the operating temperature range of the V18345-1020121001?
The device operates from -40 to +85 °C, making it suitable for extreme environments.
Does this positioner support HART communication?
Yes, it includes an FSK module for HART Protocol 5.1 communication via the 20 mA signal line.
What is the fail-safe action of this model?
It is single acting, fail safe: air vents from the actuator or the actuator is blocked upon electrical power failure.
What air supply quality is required?
Instrument air must meet DIN/ISO 8573-1 Class 3 for particle size, density, oil content, and pressure dew point.
Can this positioner be used with rotary actuators?
Yes, it supports rotary actuators with a used angle range of 25...120° (optionally 270°).
