Product Introduction
When process control demands reliable valve positioning, the ABB V18345-1010551001 TZIDC-120 Intelligent Positioner: V18345 delivers precision and durability. This intelligent positioner is designed for linear and rotary actuators, featuring an aluminium case with IP 65 (NEMA 4X) protection. Its two-wire 4...20 mA input ensures straightforward integration into existing control loops. With a double acting, fail freeze output function, the positioner maintains actuator position during electrical power failure, reducing costly downtime and potential process disruptions.
Technical Specifications Breakdown
Understanding key parameters helps you evaluate the cost-effectiveness of this positioner. The nominal input range is 4...20 mA, with a maximum of 25 mA at 30 V. The minimum input current is 3.4 mA without analog position feedback, or 3.5 mA with it. At 20 mA, the load voltage is 8.7 V DC (without explosion protection), and impedance is 435 ohms. These values ensure low power consumption, translating to reduced energy costs over the product's lifespan.
The digital input accepts 24 V DC (12...30 V DC), with logical "0" at 0...10 V DC and logical "1" at 12...30 V DC, drawing max 4 mA. The digital output per DIN 19234/NAMUR operates at 5...11 V DC, with current 2.0 mA for logical "1". This configurability allows adaptation to various control systems, minimizing integration expenses.
Output range covers 0...6 bar (0...90 psi). Air capacity at 1.4 bar (20 psi) supply is 5.0 kg/h (3.9 Nm³/h, 2.3 scfm); at 6 bar (90 psi), it reaches 13 kg/h (10 Nm³/h, 6.0 scfm). This efficient air consumption lowers compressed air costs. Shut-off values are configurable: end position 0% = 0...45%, end position 100% = 55...100%, allowing fine-tuning for precise control.
Industry Applications
In chemical processing, the V18345-1010551001 TZIDC-120 Intelligent Positioner: V18345 controls valve stroke with high accuracy. Its IP 65 enclosure withstands harsh environments, reducing replacement frequency and maintenance costs. For power generation, the fail freeze feature protects critical actuators during power interruptions, preventing costly emergency shutdowns. The double acting output suits both single and double acting actuators, offering flexibility across different valve types without additional hardware purchases.
Installation & Setup Guidance
Mount the positioner on linear actuators per DIN/IEC 534/NAMUR or rotary actuators per VDI/VDE 3845. Use the M20 x 1.5 cable thread and 1/4-18 NPT air pipe connections. Connect the two-wire 4...20 mA input via the LKS adapter connector plug. Configure split range between 20% and 100% of nominal range to match actuator stroke. Verify the digital input voltage (12...30 V DC) and output logic (configurable) before commissioning. Proper setup ensures optimal performance and avoids costly rework.
Maintenance & Reliability
Routine inspection of the aluminium case and connections helps maintain IP 65 integrity. Check air pipe fittings for leaks to preserve air capacity efficiency. The fail freeze function requires periodic testing to confirm safe position during power loss. Regular calibration of the analog position feedback module (4...20 mA) ensures accurate position reporting. These simple steps extend service life and reduce total cost of ownership.
Compatibility & Integration
This positioner integrates with any control system accepting 4...20 mA two-wire input. The digital output follows DIN 19234/NAMUR, compatible with most PLCs and DCS. The plug-in module for analog position feedback provides 4...20 mA signal for remote monitoring. No special communication protocols are required, simplifying integration and lowering engineering costs.
Selection Guide & Purchasing Advice
Before ordering the ABB V18345-1010551001, verify your actuator type (linear or rotary) and mounting kit requirements. This model includes no optional mechanical kit for digital position feedback. Confirm your explosion protection needs: this unit is without explosion protection. SpareTechPLC offers this positioner with fast shipping and expert support to ensure you select the right configuration for your application.
