ABB V18345-1010251001 TZIDC-120 Positioner | 4-20mA Smart Valve Controller

Description

Product Overview

• ABB V18345-1010251001 is a TZIDC-120 Intelligent Positioner.
• It controls pneumatic valves and actuators in industrial processes.
• This unit is intelligent and configurable with an indicator and operator panel.
• Works with linear or rotary actuators. Very versatile.

Part Number Breakdown – Understand Your Unit

• ▹ V18345 – TZIDC-120 intelligent positioner
• ▹ 1 – Aluminum case, IP65/NEMA 4X, for linear or rotary actuators
• ▹ 0 – Fixed digit
• ▹ 1 – 4-20mA input, two-wire with LKS adapter connector
• ▹ 0 – No explosion protection
• ▹ 2 – Single acting, fail freeze on electrical failure
• ▹ 5 – M20 x 1.5 cable entry, 1/4-18 NPT air pipe thread
• ▹ 1 – Analog position feedback module (4-20mA)
• ▹ 0 – No digital position feedback kit
• ▹ 0 – Fixed digit
• ▹ 1 – Standard design/varnish

Technical Specifications

• ▹ Brand: ABB (formerly ABB/Bailey)
• ▹ Model: V18345-1010251001
• ▹ Series: TZIDC-120
• ▹ Supply pressure: 1.4 to 6 bar (20 to 90 psi)
• ▹ Air consumption: Less than 0.03 kg/h (0.015 scfm)
• ▹ Input signal: 4-20 mA, two-wire
• ▹ Characteristic deviation: ≤ 0.5%
• ▹ Tolerance band: 0.3% to 10% (adjustable)
• ▹ Dead band: 0.1% to 10% (adjustable)
• ▹ Resolution (A/D conversion): > 4000 steps
• ▹ Sample rate: 20 milliseconds
• ▹ Enclosure rating: IP65 (NEMA 4X)
• ▹ Case material: Aluminum, varnished

Performance & Accuracy

• Characteristic curves: Linear, equal percentage 1:25, 1:50, 25:1, or 50:1.
• Also freely configurable with up to 20 reference points.
• Temperature influence: ≤ 0.5% per 10°C change.
• Vibration resistance: ≤ ±1% up to 10g at 80 Hz.
• Seismic rating: Meets DIN/IEC 68-3-3 Class III for strong earthquakes.
• Mounting orientation: No effect on performance.

Output & Signal Configuration

• Output 1 (increasing signal): 0-100% signal raises output pressure.
• Output 1 (decreasing signal): 0-100% signal lowers output pressure.
• Direct action: 4-20 mA signal = 0-100% position.
• Reverse action: 20-4 mA signal = 0-100% position.
• Fail freeze: Position holds steady if electrical power fails.

Installation Guide

• Mount on linear actuators (DIN/IEC 534/NAMUR) or rotary actuators (VDI/VDE 3845).
• Use M20 x 1.5 cable entry for electrical connections.
• Connect air pipe using 1/4-18 NPT thread.
• Supply clean, dry instrument air at 1.4-6 bar (20-90 psi).
• Do not exceed actuator’s maximum operating pressure.
• Wire 4-20mA input signal to two-wire terminal.

Debug & Maintenance

• Use built-in indicator and operator panel for local configuration.
• Adjust dead band and tolerance band to match your process.
• Analog position feedback (4-20mA) shows valve position remotely.
• Check air filter regularly. Clean air extends life.
• Perform auto-calibration using the positioner’s self-setup routine.

Compatibility

• Works with any 4-20mA control system (PLC, DCS, or controller).
• Mounts to most linear and rotary pneumatic actuators.
• Compatible with HART communicators via LKS adapter (optional).
• Can integrate with Modicon Quantum PLC systems.
• Also works with Versamax PLCs via analog output modules.

Environmental Tolerance & Certifications

• Enclosure: IP65 (NEMA 4X) – dust-tight and water-resistant.
• Case: Aluminum with varnished coating – corrosion resistant.
• Temperature influence: Very low at 0.5% per 10°C.
• Vibration: Handles up to 10g at 80Hz without error.
• Seismic: Meets Class III for strong earthquakes.
• No explosion protection on this version (option 0).

Package Contents & Warranty

• 12 months warranty from invoice date. Covers defects.
• Package includes: 1 x TZIDC-120 positioner with analog feedback module installed.
• No mounting bracket, air fittings, or cables included.
• Return defective units for replacement under warranty.

Shipping – Fast Worldwide Delivery

• We ship with FedEx, UPS, DHL express services.
• Tracking number within 24 hours. Insurance included.
• Typical delivery: 3-7 business days.

Typical Applications

• Control valves in oil and gas, chemical, and power plants.
• Pneumatic actuators on pumps, compressors, and turbines.
• Process industries needing precise valve positioning.
• For vibration monitoring on rotating equipment, see 3300 XL 11 mm Proximity Probes.

Diagnostic Capability

• Built-in auto-calibration routine for easy setup.
• Analog feedback (4-20mA) shows actual valve position.
• Operator panel displays status, position, and alarms.
• Detects low air supply or stuck valve conditions.

Frequently Asked Questions (FAQ)

• Question: What power supply does this positioner need?Answer: No external power. It uses the 4-20mA loop for power (two-wire).
• Question: What happens if electrical signal fails?Answer: Fail freeze mode holds valve at last position.
• Question: Can I use this in hazardous areas?Answer: This version has no explosion protection. Order different option for Ex areas.
• Question: What air quality do I need?Answer: Use clean, dry instrument air per ISA or ISO standards.
• Question: How do I configure the characteristic curve?Answer: Use operator panel or software. Choose linear, equal %, or custom 20-point curve.

Experience-based Q&A (Field Notes)

• Question: My positioner hunts or oscillates. What is wrong?Answer: Dead band too narrow or actuator too fast. Increase dead band setting.
• Question: Can I replace my old TZIDC with this new unit?Answer: Yes. Check mounting bracket compatibility first.
• Question: The positioner shows position error. What should I check?Answer: Verify air supply pressure. Also check for mechanical linkage slippage.
• Question: How often should I calibrate this unit?Answer: Every 12 months for critical loops. Run auto-calibrate annually.

Buying Guide – Choose the Right Positioner

• Choose V18345-1010251001 for single acting, fail freeze, analog feedback.
• Need fail close or fail open? Look for different output code (not 2).
• For hazardous areas, select explosion protection option (not 0).
• Need digital feedback? Add optional mechanical kit for digital position feedback.
• Check your actuator type: linear or rotary. This unit handles both.
• Contact us for configuration support or custom part numbers.

Need Help? Contact Us

• Technical support or quote requests:
  +86 158 8020 0923 (WhatsApp)
• Email: sales@plcdcshub.com – reply within 24 hours.
• Pre-sales consulting, datasheets, and RMA support available.

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