Product Overview
When precise valve positioning is critical in industrial processes, the ABB V18345-1010521001 Electro-Pneumatic Positioner TZIDC delivers intelligent, configurable performance. This double-acting positioner with fail freeze action ensures stable control even during signal loss. Built for demanding environments, it features an aluminum IP 65 (NEMA 4X) case and a 4-20mA input with LKS adapter.
Technical Specifications Breakdown
The V18345-1010521001 offers key parameters that define its accuracy and reliability:
- Characteristic deviation: ≤ 0.5% – ensures precise positioning across the full travel range.
- Dead band: Adjustable from 0.1% to 10% – allows fine-tuning of response sensitivity.
- Resolution (A/D conversion): > 4000 steps – provides high-resolution control for demanding applications.
- Sample rate: 20 msec – enables fast response to changing setpoints.
- Influence of ambient temperature: ≤ 0.5% per 10 °C change – maintains accuracy across temperature variations.
- Influence of vibration: ≤ ± 1% up to 10 g and 80 Hz – ensures stable operation in high-vibration environments.
The positioner supports linear, equal percentage (1:25 or 1:50 or 25:1 or 50:1), and freely configurable characteristic curves with up to 20 reference points. Its seismic design meets DIN/IEC 68-3-3 Class III for strong earthquakes.
Industry Applications
This ABB TZIDC positioner is ideal for:
- Oil & gas pipelines: Double-acting fail freeze action maintains valve position during signal loss, preventing uncontrolled flow changes.
- Chemical processing: The IP 65 aluminum case resists corrosive atmospheres, while the 4-20mA analog feedback module provides continuous position monitoring.
- Power generation: High vibration tolerance (≤ ± 1% up to 10 g, 80 Hz) ensures reliable operation near turbines and pumps.
Installation & Setup Guidance
Mount the V18345-1010521001 securely using the 1/2-14 NPT electrical connection and 1/4-18 NPT air connections. Configure the action (direct or reverse) and characteristic curve via the operator panel. The plug-in analog feedback module (4...20mA, two-wire) simplifies wiring. For double-acting actuators, ensure proper air supply to both OUT 1 and OUT 2 ports.
Maintenance & Reliability
Routine inspection of air connections and electrical terminations helps maintain performance. The aluminum IP 65 enclosure protects against dust and water jets, reducing maintenance frequency. Adjust the tolerance band (0.3...10%) and dead band (0.1...10%) as needed to optimize response. The positioner’s robust design minimizes downtime in continuous processes.
Compatibility & Integration
The V18345-1010521001 integrates with any 4-20mA control system. Its LKS adapter ensures compatibility with standard analog outputs. The analog position feedback module provides a 4...20mA signal for DCS or PLC monitoring. No special communication protocols are required, making it easy to retrofit into existing installations.
Selection Guide & Purchasing Advice
Before ordering, verify your actuator type (double acting) and required fail-safe action (fail freeze). Confirm that the electrical connection (1/2-14 NPT) and air connections (1/4-18 NPT) match your installation. SpareTechPLC stocks the ABB V18345-1010521001 and can advise on availability and lifecycle status. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Frequently Asked Questions
Q1: What is the weight of the V18345-1010521001?
A: The weight is 1.7 kg.
Q2: Can this positioner be used with single-acting actuators?
A: No, the V18345-1010521001 is specifically designed for double-acting actuators with fail freeze action.
Q3: What is the maximum vibration level this positioner can withstand?
A: It maintains ≤ ± 1% accuracy up to 10 g and 80 Hz.
Q4: Does the positioner include an analog feedback module?
A: Yes, it includes a plug-in module for analog position feedback with a 4...20mA two-wire signal.
Q5: What is the enclosure rating of this model?
A: The aluminum case is rated IP 65 (NEMA 4X), with no mechanical indicator.
