Product Overview

The ABB V18345-2010421001 is a TZIDC electro-pneumatic positioner. This intelligent device includes an indicator and operator panel for local configuration.

The positioner mounts to linear actuators according to DIN/IEC 534 / NAMUR standards. Alternatively, it mounts to rotary actuators per VDI/VDE 3845 specifications. The aluminum case provides IP 65 (NEMA 4X) protection with a mechanical position indicator. Therefore, this positioner suits demanding industrial environments.

Ordering Information Breakdown

The V18345-2010421001 follows a specific ordering code structure. Understanding this code helps verify correct configuration.

• V18345: TZIDC intelligent configurable positioner.

• 2: Aluminum case, varnished, IP65/NEMA 4X with mechanical position indicator.

• 01: Input 4-20mA, two-wire with connector plug for LKS adapter.

• 0: Without explosion protection.

• 4: Double acting, fail-safe output.

• 2: Cable thread 1/2-14 NPT, air pipe thread 1/4-18 NPT.

• 1: Plug-in module for analog position feedback (4-20mA).

• 0: Without optional mechanical kit for digital position feedback.

• 1: Standard design (varnish/coding).

General Specifications

The V18345-2010421001 offers reliable valve positioning for critical applications.

• Manufacturer: ABB.

• Product Type: TZIDC Electro-Pneumatic Positioner.

• Housing Material: Aluminum, varnished.

• Protection Class: IP 65 / NEMA 4X.

• Surface/Color: Electrostatic dipping varnish with epoxy resin, stove-hardened. Case varnished black (RAL 9005, matte). Housing cover Pantone 420.

• Weight: 1.7 kg.

Pneumatic Connections:

• Threads: 1/4-18 NPT.

• Air pipe thread: 1/4-18 NPT.

Electrical Connections:

• Cable thread: 1/2-14 NPT.

Input/Output Specifications

The V18345-2010421001 provides standard industrial I/O capabilities.

Output Signal (Two-wire technology):

• Nominal range: 4 to 20 mA.

Digital Input:

• Control voltage 0 to 5 V DC for logical switching state "0".

• Control voltage 11 to 30 V DC for logical switching state "1".

Digital Output (Control circuit to DIN 19234/NAMUR):

• Supply voltage: 5 to 11 V DC.

Pneumatic Specifications

The V18345-2010421001 delivers efficient pneumatic performance.

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

• Air Consumption: <0.03 kg/h (0.015 scfm) independent of supply pressure.

• Output Type: Double acting, fail-safe.

Analog Position Feedback Module

The V18345-2010421001 includes a plug-in module for analog position feedback.

Module Specifications:

• Range: 4 to 20 mA (configurable split ranges).

• Two-wire circuitry.

• Power Supply: 24 V DC (10 to 30 V DC) or 48 V DC (20 to 48 V DC, no explosion protection).

• Action: Direct or reverse (configurable).

• Characteristic Deviation: <1%.

Important Alarm Note: Without a signal from the positioner (e.g., no energy or initializing), the module sets the output to >20 mA (alarm level).

Digital Position Feedback with Proximity Switches

The optional digital position feedback module provides independent position signaling.

Two proximity switches for independent position signaling.

• Switching points adjustable between 0 and 100%.

• Current circuits conform to DIN 19234/NAMUR.

• Supply voltage: 5 to 11 V DC.

• Signal current <1 mA for logical "0".

• Signal current >2 mA for logical "1".

• Effective direction configurable (normally logical "0" or logical "1").

Note: The ranges of the two switches cannot overlap.

Shutdown Module (Fail-Safe Function)

The shutdown module provides safety functionality independent of the mother board.

Specifications:

• Supply Voltage: 24 V DC (20 to 30 V DC), electrically isolated from input signal.

• Safe Position Activation: When voltage drops below 5 V.

• AK Approval: AK 4 to DIN V 19250.

• Test Report: No. 101/S01/148.

Fail-Safe Mode (Double Acting):
The positioner output 1 is depressurized, and the valve moves to the safe position. In a double-acting actuator, the second output is additionally pressurized.

Fail-Freeze Mode:
Pneumatic output 1 is closed, and the valve "freezes" in its current position. For a double-acting actuator, both outputs are closed.

Key Advantage: The shutdown module works independently of the mother board. Therefore, all information from the final control element remains available in the supervisory process control system at any time.

Key Features

The V18345-2010421001 offers several advantages for valve positioning applications.

Intelligent TZIDC Platform:
The device is configurable with an indicator and operator panel. Consequently, local setup and diagnostics are straightforward.

Rugged Aluminum Housing:
The varnished aluminum case provides IP65/NEMA 4X protection. Hence, it withstands harsh weather and washdown environments.

Double Acting Fail-Safe Output:
The -4 output option provides double acting operation with fail-safe functionality. Therefore, the valve moves to a safe position on power loss.

Integrated Analog Feedback:
The plug-in analog position feedback module provides 4-20 mA output. Thus, remote position monitoring is possible without additional hardware.

Low Air Consumption:
Consumption is less than 0.03 kg/h independent of supply pressure. As a result, operating costs are minimized.

Versatile Mounting Options:
Mounts to linear actuators per DIN/IEC 534 / NAMUR standards. Similarly, it mounts to rotary actuators per VDI/VDE 3845.

NPT Connections:
Both cable and air pipe use NPT threads (1/2-14 and 1/4-18 respectively). Therefore, it suits North American installations.

Typical Applications

The V18345-2010421001 suits a wide range of valve positioning applications.

• Process control valves in chemical plants.

• Steam turbine valve positioning in power generation.

• Compressor anti-surge valve control in oil and gas.

• Pressure reducing valve positioning in refineries.

• Critical control loops requiring fail-safe operation.

Installation Guidelines

Install the V18345-2010421001 according to standard positioner practices. First, mount the positioner to the actuator using the appropriate mounting kit. For linear actuators, follow DIN/IEC 534 / NAMUR guidelines. For rotary actuators, follow VDI/VDE 3845 guidelines.

Then, connect supply air at 1.4 to 6 bar (20 to 90 psi). Use 1/4-18 NPT fittings for air connections. Connect the 4-20 mA input signal to the two-wire input terminals. For analog feedback, connect the 4-20 mA output to the monitoring system.

For fail-safe operation, ensure the shutdown module receives 24 V DC power. When this voltage drops below 5 V, the positioner executes the safe position. Finally, perform initialization using the operator panel per the TZIDC manual.

What is in the Box

Please inspect all items upon delivery.

• ABB V18345-2010421001 TZIDC electro-pneumatic positioner.

• Analog position feedback module (installed).

• Mechanical position indicator.

• Installation instruction manual.

Frequently Asked Questions (FAQ)

1. What is the supply pressure range for the V18345-2010421001?

The V18345-2010421001 requires supply pressure between 1.4 and 6 bar (20 to 90 psi). Air consumption is less than 0.03 kg/h independent of supply pressure.

2. What type of output does this positioner provide?

The -4 output option provides double acting, fail-safe operation. On electrical power failure, the valve moves to the safe position.

3. Does this positioner include position feedback?

Yes. The V18345-2010421001 includes a plug-in analog position feedback module. It provides a 4-20 mA output signal proportional to valve position.

4. What is the enclosure rating of this device?

The aluminum case provides IP 65 (NEMA 4X) protection. Therefore, it is suitable for outdoor and washdown environments.

5. What communication protocol does this positioner use?

The V18345-2010421001 uses a 4-20 mA analog input signal. It does not include digital communication protocols like HART or Foundation Fieldbus.