ABB V18345-1017121001 TZIDC Positioner Overview

The ABB V18345-1017121001 is an intelligent TZIDC electro-pneumatic positioner. This unit is fully configurable with an indicator and operator panel. You can mount it on linear or rotary actuators. It provides reliable valve positioning for process automation.

Technical Specifications in Hierarchical Format

Housing & Mounting (Case / Mounting)

• Material: Aluminum, electrostatically varnished with epoxy resin

• Protection Class: IP 65 (NEMA 4X)

• Color: Case black RAL 9005 matte / Cover Pantone 420

• Actuator Compatibility:

  • Linear actuators per DIN/IEC 534 / NAMUR

  • Rotary actuators per VDI/VDE 3845

• Mounting Type: Ready for integral mounting

Device Type & Intelligence

• Family: TZIDC electro-pneumatic positioner

• Configuration: Intelligent and configurable

• User Interface: Built-in indicator and operator panel

Input / Communication Port

• Signal Type: 4 to 20 mA, two-wire technology

• Adapter: Connector plug for LKS adapter included

Explosion Protection (ATEX)

• Classification: Ex II 2 G EEx ia IIC T6

• Protection Principle: Intrinsic safety "ia"

• Gas Group: IIC (includes hydrogen and acetylene)

• Temperature Class: T6 (max surface temp 85°C)

Output & Safe Position (Power Failure)

• Actuation Type: Single acting

• Fail Safe Mode: Fail freeze

• Action on Power Loss: Valve stays in last position

Pneumatic & Electrical Connections

• Cable Entry Thread: 1/2-14 NPT

• Air Pipe Thread: 1/4-18 NPT

• Pneumatic Connection Threads: G 1/4 or 1/4-18 NPT

Position Feedback Options

• Analog/Digital Module: Not installed

• Mechanical Kit (Standard): Not included

• Mechanical Kit (Optional): Included for digital feedback

  • Switch Type: Proximity switches SJ2-SN

  • Switch Logic: NC (normally closed) or logical 1

Electrical Specifications (Digital Signals)

• Digital Input - Logic "0": 0 to 5 V DC

• Digital Input - Logic "1": 11 to 30 V DC

• Digital Output Supply: 5 to 11 V DC

• Output Standard: DIN 19234 / NAMUR

Pneumatic Performance

• Supply Pressure Range: 1.4 to 6 bar (20 to 90 psi)

• Air Consumption: < 0.03 kg/h (0.015 scfm)

• Consumption Characteristic: Independent of supply pressure

Physical Data

• Housing Material: Aluminum

• Weight: 1.7 kg

Professional Installation Guidelines

Mount the ABB V18345-1017121001 directly on your actuator shaft. Use only clean, dry, and oil-free instrument air. The supply pressure must stay between 1.4 and 6 bar. Connect the 4-20 mA loop powered signal to the input terminals. For ATEX installations, follow intrinsic safety wiring rules. Ground the housing properly to avoid electrical noise. Do not exceed the IP65 rating with damaged cable glands. The fail freeze mode keeps the valve position during power loss. Test the proximity switch operation before final commissioning.

Package Contents

• One (1) ABB V18345-1017121001 TZIDC electro-pneumatic positioner

• One (1) mechanical kit for digital position feedback

• Two (2) proximity switches SJ2-SN (NC or logical 1)

• Connector plug for LKS adapter

• Mounting bracket kit for linear or rotary actuators

• Product documentation and quick start guide

Professional FAQs - V18345-1017121001

1. What does "fail freeze" mean on the ABB V18345-1017121001?

Fail freeze on the ABB V18345-1017121001 means the valve stays at its last position. This happens immediately when the 4-20 mA input signal or electrical power is lost. The internal I/P converter locks the air pressure. This mode is different from fail close or fail open.

2. Can I use the V18345-1017121001 with a 24V DC digital control system?

Yes, the ABB V18345-1017121001 accepts 11 to 30 V DC as logical state "1". Your 24V DC system works perfectly as a digital input. The digital output follows NAMUR DIN 19234 standards. This makes integration with most PLCs very straightforward.

3. What is the difference between the standard and included mechanical feedback kit?

The standard ABB V18345-1017121001 without the optional kit has no feedback. This specific configuration includes a mechanical kit with SJ2-SN proximity switches. These switches provide digital position feedback. They are NC type or can be wired as logical 1.

4. Is the ABB V18345-1017121001 suitable for natural gas applications?

The ABB V18345-1017121001 has ATEX Ex ia IIC T6 certification. This includes gas group IIC for hydrogen and acetylene. Natural gas (methane) is in group IIA or IIB. The positioner is fully suitable for natural gas applications. Check your local hazardous area classification first.

5. How does the air consumption stay independent of supply pressure?

The ABB V18345-1017121001 uses an internal pressure regulator. This regulator maintains stable pilot pressure regardless of input. The air consumption remains below 0.03 kg/h at any pressure from 1.4 to 6 bar. This saves energy compared to older positioner designs.

Why Choose the ABB V18345-1017121001?

This TZIDC positioner combines intelligence with rugged construction. The ATEX Ex ia IIC T6 rating covers most hazardous gas areas. The fail freeze mode provides safe valve positioning on power loss. Very low air consumption reduces operating costs. Order the ABB V18345-1017121001 today for precise and safe valve control.