ABB V18345-1020121001 TZIDC-120 HART Positioner IP65

• ABB V18345-1020121001 is an Electro-Pneumatic Positioner.
• Part of the TZIDC-120 series from ABB.
• This smart positioner controls pneumatic valves with high precision.
• Works with linear or rotary actuators. Very versatile and rugged.

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
• ▹ 2 – FSK module for HART communication
• ▹ 0 – No explosion protection
• ▹ 1 – Single acting, fail safe
• ▹ 2 – 1/2-14 NPT cable entry, 1/4-18 NPT air pipe
• ▹ 1 – Analog position feedback (4-20mA)
• ▹ 0 – No digital position feedback kit
• ▹ 0 – Fixed digit
• ▹ 1 – Standard design/varnish

Key Features – Why Choose This Unit

• Low operating cost – very efficient air consumption.
• Compact design – saves panel space.
• Well-proven technology – reliable in harsh conditions.
• Wide temperature range: -40°C to +85°C.
• Easy commissioning – single push-button operation.
• Mechanical position indicator – visible at a glance.
• Approved for SIL2 safety loops.

Technical Specifications

• ▹ Brand: ABB
• ▹ Model: V18345-1020121001
• ▹ Series: TZIDC-120
• ▹ Product Type: Electro-Pneumatic Positioner
• ▹ Weight: 1.7 kg
• ▹ Enclosure rating: IP65 (NEMA 4X)
• ▹ Case material: Aluminum, varnished
• ▹ Supply pressure: 1.4 to 6 bar (20 to 90 psi)
• ▹ Air consumption: Less than 0.03 kg/h (0.015 scfm)
• ▹ Output range: 0 to 6 bar (0 to 90 psi)
• ▹ Temperature range: -40°C to +85°C

Input Specifications – Electrical Signals

• Nominal input: 4-20 mA, two-wire technology.
• Maximum input: 25 mA / 30 V.
• Minimum starting current: 3.4 mA (no feedback) or 3.5 mA (with feedback).
• Load voltage at 20 mA: 8.7 V DC (standard).
• Impedance at 20 mA: 435 ohms (standard).
• Digital input: 24 V DC (12-30 V range).

Output & Air Capacity

• Air capacity at 1.4 bar: 5.0 kg/h (2.3 scfm).
• Air capacity at 6 bar: 13 kg/h (6.0 scfm). Booster available.
• Output function: For single or double acting actuators.
• On electrical failure: Air vents or actuator blocks (fail safe).
• Shut-off values: 0-45% for end position 0%, 55-100% for 100%.

Travel & Motion Parameters

• Angle of rotation: 25-120° (rotary), 25-60° (linear).
• Travel limit: Freely configurable within 0-100% (min range >20%).
• Travel time prolongation: 0-200 seconds per direction.
• Positioning time limit: 0-200 seconds monitoring parameter.

Performance & Accuracy

• Characteristic deviation: ≤ 0.5%.
• Tolerance band: 0.3% to 10% (adjustable).
• Dead band: 0.1% to 10% (adjustable).
• Resolution (A/D): > 4000 steps.
• Sample rate: 20 milliseconds.
• 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.
• Mounting orientation: No effect on performance.

Characteristic Curves & Signal Action

• Characteristic curves: Linear, equal percentage 1:25, 1:50, 25:1, 50:1.
• Also freely configurable with up to 20 reference points.
• Direct action: 4-20 mA signal = 0-100% position.
• Reverse action: 20-4 mA signal = 0-100% position.
• Output 1 (increasing): 0-100% signal raises output pressure.
• Output 1 (decreasing): 0-100% signal lowers output pressure.

Air Supply Requirements

• Use instrument air free of oil, water, and dust.
• Meets DIN/ISO 8573-1 Class 3.
• Max particle size: 5 µm. Max oil content: 1 mg/m³.
• Pressure dew point: 10 K below operating temperature.
• Do not exceed actuator’s maximum operating pressure.

Communication & Protocols

• HART Protocol 5.1 – communicate via 4-20mA signal line.
• FSK module built-in for HART communication.
• Local connector for LKS adapter (local communication interface).
• Use HART handheld or PC software for configuration.

Certifications & Approvals

• ATEX, FM, CSA, IECEx approved for hazardous areas.
• Meets EMC Directive 89/336/EEC.
• CE marked for European conformity.
• Approved for SIL2 safety loops.

Installation Guide

• Mount on linear actuators (DIN/IEC 534/NAMUR) or rotary (VDI/VDE 3845).
• Use 1/2-14 NPT cable entry for electrical connections.
• Connect air pipe using 1/4-18 NPT thread.
• Supply clean, dry instrument air at 1.4-6 bar.
• Wire 4-20mA input to two-wire terminal.
• Add HART communicator to FSK module if needed.

Debug & Maintenance

• Use single push-button for auto-calibration and setup.
• Mechanical position indicator shows valve position locally.
• Adjust dead band and tolerance band via HART or local panel.
• Check air filter regularly. Clean air extends life.
• Run self-diagnostics through HART communication.

Compatibility

• Works with any 4-20mA control system (PLC, DCS, or controller).
• HART communication works with most asset management systems.
• Compatible with Versamax PLCs via analog output modules.
• Also integrates with Modicon Quantum systems.

Package Contents & Warranty

• 12 months warranty from invoice date. Covers defects.
• Package includes: 1 x TZIDC-120 positioner with analog feedback and HART module.
• 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 in SIL2 safety loops.
• Hazardous area installations (ATEX/FM/CSA/IECEx approved).
• Extreme temperature environments from -40°C to +85°C.

Diagnostic Capability

• Built-in auto-calibration routine for easy setup.
• HART communication provides real-time diagnostic data.
• Mechanical position indicator shows valve position locally.
• Detects low air supply, stuck valve, or excessive friction.

Frequently Asked Questions (FAQ)

• Question: What power does this positioner need?

  Answer: No external power. Uses 4-20mA loop for power (two-wire).

• Question: Does this unit support HART communication?

  Answer: Yes. Built-in FSK module for HART Protocol 5.1.

• Question: What happens if electrical power fails?

  Answer: Fail safe mode vents air or blocks actuator per configuration.

• Question: Is this approved for hazardous areas?

  Answer: Yes. ATEX, FM, CSA, and IECEx approved.

• Question: What is the operating temperature range?

  Answer: -40°C to +85°C (-40°F to +185°F).

Experience-based Q&A (Field Notes)

• Question: My positioner shows position error. What should I check?

  Answer: Check air supply pressure. Also inspect mechanical linkage for slippage.

• Question: The unit does not respond to HART commands.

  Answer: Verify loop resistance (minimum 250 ohms for HART). Check wiring polarity.

• Question: Can I use this in a SIL2 safety loop?

  Answer: Yes. This positioner is approved for SIL2 applications.

• Question: How often should I calibrate?

  Answer: Every 12 months for critical loops. Run auto-calibrate annually.

Buying Guide – Choose the Right Positioner

• Choose V18345-1020121001 for HART communication and fail safe single acting.
• Need explosion protection? This version has ATEX/FM/CSA approvals built-in.
• Check your actuator type: linear or rotary. This unit handles both.
• Need double acting? Look for output code 3 or 4 instead of 1.
• For extreme cold, this unit works down to -40°C – no heater needed.
• Contact us for bulk pricing or configuration support.

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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