V18345-2010521501 ABB TZIDC Electro-Pneumatic Positioner Microswitches

Description

Product Introduction

The ABB V18345-2010521501 is an electro-pneumatic positioner. ABB makes this TZIDC series device. It controls linear or rotary actuators. The positioner takes a 4-20 mA signal. It moves the valve to the right position. This model includes 24 V DC microswitches for digital feedback.

Model Number Breakdown

• V18345-2010521501 = TZIDC Electro-Pneumatic Positioner
• 20 = Aluminum case, IP65, mechanical indicator, for linear or rotary actuators
• 1 = 4-20 mA input, two-wire, with LKS adapter connector
• 0 = No explosion protection
• 5 = Double acting, fail freeze on power failure
• 2 = Cable 1/2-14 NPT, air pipe 1/4-18 NPT
• 1 = Analog position feedback 4-20 mA (plug-in)
• 50 = Mechanical kit with 24 V DC/AC microswitches (change-over)
• 1 = Standard varnish/coding

Key Features

• Aluminum case IP65/NEMA 4X – rugged and weatherproof
• Wide temperature range – -40°C to +85°C operation
• Double acting with fail freeze – holds position on power loss
• 4-20 mA input with HART – easy integration
• Microswitches for digital feedback – 24 V DC/AC change-over
• Global explosion protection approvals – ATEX, FM, CSA, IECEx
• Single push-button commissioning – easy setup
• SIL2 ready – for safety loops

Technical Specifications

• Brand: ABB
• Model: V18345-2010521501
• Series: TZIDC
• Type: Electro-Pneumatic Positioner
• Weight: 1.7 kg
• Case material: Aluminum, black varnish RAL 9005
• Protection class: IP65 / NEMA 4X

Electrical Input Specifications

• Nominal signal: 4-20 mA (two-wire)
• Maximum current: 25 mA at 30 V
• Minimum start current: 3.8 mA
• Minimum operating current: 3.4 mA (no feedback) or 3.5 mA (with feedback)
• Load voltage at 20 mA: 8.7 V DC
• Impedance at 20 mA: 435 ohms
• Split range: 20% to 100% of nominal range
• HART Protocol: Version 5.1
• Local communication: LKS adapter connector

Digital Input & Output

• Digital input voltage: 24 V DC (12-30 V DC range)
• Logical 0: 0-10 V DC
• Logical 1: 12-30 V DC
• Digital input max current: 4 mA
• Digital output (NAMUR): Supply 5-11 V DC
• Logical 0 output: Current below 1.0 mA
• Logical 1 output: Current above 2.0 mA
• Microswitches: 24 V DC/AC change-over contacts (option 50)

Pneumatic Specifications

• Output pressure range: 0-6 bar (0-90 psi)
• Output function: Double acting, fail freeze on power loss
• Air supply pressure: 1.4-6 bar (20-90 psi)
• Air consumption: Below 0.03 kg/h (0.015 scfm)
• Air quality (DIN/ISO 8573-1): Oil-free, dry, max particle 5 µm, oil max 1 mg/m³
• Air capacity at 1.4 bar: 5.0 kg/h = 3.9 Nm³/h = 2.3 scfm
• Air capacity at 6 bar: 13 kg/h = 10 Nm³/h = 6.0 scfm

Performance Data

• Characteristic deviation: ≤ 0.5%
• Dead band: 0.1-10% adjustable
• Tolerance band: 0.3-10% adjustable
• Resolution (A/D): Over 4000 steps
• Sample rate: 20 msec
• Temperature influence: ≤ 0.5% per 10°C change
• Vibration influence: ≤ ±1% up to 10 g at 80 Hz
• Seismic: Meets DIN/IEC 68-3-3 Class III
• Mounting orientation influence: No effect

Travel & Angle

• Rotary actuators: 25-120° (optional 270°)
• Linear actuators: 25-60°
• Travel limits: Freely configurable 0-100% (min range >20%)
• Travel time prolongation: 0-200 seconds per direction
• Positioning time limit: 0-200 seconds
• Shut-off end position 0%: 0-45%
• Shut-off end position 100%: 55-100%

Characteristic Curves

• Linear
• Equal percentage 1:25 or 1:50
• Equal percentage 25:1 or 50:1
• Freely configurable with 20 reference points
• Direct action: 4-20 mA = 0-100% position
• Reverse action: 20-4 mA = 0-100% position

Environmental Capabilities

• Operating temperature: -40°C to +85°C
• Storage and transport: -40°C to +85°C
• Relative humidity operation: 95% average, condensation allowed
• Relative humidity transport: 75% average, non-condensing

Explosion Protection Approvals

• FM (J.I. 3005029): Intrinsically safe Class I, II, III Div. 1, Non-incendive Div. 2
• CSA (1052414): Intrinsically safe Enclosure 4X, T4 max 85°C, Div. 1 and Div. 2
• ATEX (II 2G EEx ib IIC T6): Intrinsically safe, T4/T5/T6
• ATEX (II 3G EEx n A II T6): Explosion-proof Zone 2, T4/T5/T6
• IECEx (Ex ib IIC T6): Intrinsically safe, T4/T5/T6
• SIL2: Suitable for safety loops

Physical Connections

• Electrical cable entry: Two threads 1/2-14 NPT or M20x1.5
• Screw terminals: Max 1.0 mm² for options, max 2.5 mm² for analog signal
• Pneumatic connections: G 1/4 or 1/4-18 NPT threads

Installation Guidelines

• Mount on linear actuators per DIN/IEC 534 or NAMUR.
• Mount on rotary actuators per VDI/VDE 3845.
• Use clean, dry instrument air per DIN/ISO 8573-1 Class 3.
• Do not exceed actuator maximum pressure.
• Keep cable terminals free from strain.
• Need help? Contact us on WhatsApp +86 158 8020 0923

Commissioning & Maintenance

• Use single push-button for easy setup.
• Watch mechanical position indicator for local feedback.
• Use HART or LKS adapter for remote configuration.
• No routine calibration needed under normal use.
• Clean external surfaces with dry cloth.

Compatibility

• Works with most linear and rotary actuators.
• HART communication with any HART master.
• LKS adapter for local communication.
• Compatible with 4-20 mA control systems.
• Also works alongside Versamax PLC systems.

Packing List

• One ABB V18345-2010521501 positioner
• Mechanical position indicator (built-in)
• Analog position feedback module (built-in)
• Microswitches (built-in)
• Mounting kit not included – order separately

Warranty & Shipping

• 12-month warranty against defects
• Ships via FedEx, UPS, or DHL worldwide

Typical Applications & Diagnostic Ability

• Chemical and petrochemical valve control
• Power plant steam turbine valves
• Oil and gas pipelines
• Safety-critical SIL2 loops
• Diagnose via HART communication
• Monitor position feedback in real time
• Detect valve sticking, low air pressure, or dead band issues

Professional FAQ

• What approvals does this V18345-2010521501 have? This model includes ATEX, FM, CSA, and IECEx intrinsically safe approvals. Also suitable for SIL2 safety loops.
• What is the difference between fail freeze and fail safe? Fail freeze holds last position on power loss. Fail safe vents air and moves to a safe position.
• Can I use this positioner with single acting actuators? No. This is double acting only. Choose a single acting version for spring return actuators.
• Experience: My positioner shows deviation but no air leak found. Check dead band setting first. Increase it slightly to stop hunting. Then check travel time prolongation settings.
• Selection guide: Should I choose microswitches or analog feedback? This model has both. Option 1 gives 4-20 mA analog feedback. Option 50 gives 24 V microswitches. Keep both for complete feedback.

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