ABB V18345-2010521001 TZIDC智能电气阀门定位器

Brand ABB

Model ABB V18345-2010521001 TZIDC-NEW

Product Overview

The ABB V18345-2010521001 is a high-performance intelligent electro-pneumatic valve positioner belonging to the renowned ABB TZIDC (Terminal based Intelligent Digital Controller) family. Designed for the precise control of pneumatic actuators, this model is specifically configured as a double-acting unit with a critical “Fail-Freeze” safety function. Unlike standard fail-safe designs that drive a valve to a fully open or closed position upon power loss, the ABB V18345-2010521001 locks the valve in its last known position when power, air supply, or signal is interrupted. This “three-break protection” makes it ideal for processes where any sudden, uncontrolled movement could be hazardous.

The ABB V18345-2010521001 accepts a standard 4-20 mA analog input signal and features a built-in, two-wire 4-20 mA analog position feedback module. This allows the positioner to not only control the valve with high accuracy but also provide real-time valve position data back to a DCS or PLC. The unit is housed in a painted aluminum enclosure with an IP65 (NEMA 4X) rating, ensuring reliable operation in harsh industrial environments. It is equipped with a local operator interface consisting of a two-line LCD display and four push-buttons, enabling on-site configuration and monitoring. The integration of the ABB V18345-2010521001 into a control loop ensures precise, stable, and safe valve operation, which is crucial for maintaining optimal process conditions.

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Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	V18345-2010521001
Manufacturer	ABB
Product Type	Intelligent Electro-Pneumatic Valve Positioner
Series	TZIDC (Terminal based Intelligent Digital Controller)
Input Signal	4-20 mA, two-wire
Output Action	Double-acting
Safe Position	Fail-Freeze (locks in last position on power failure)
Communication	HART (via LKS adapter connector)
Position Feedback	4-20 mA, two-wire, plug-in analog module
Supply Air Pressure	1.4 to 6 bar (20 to 100 psi)
Travel Range	Linear: 20-150 mm; Angular: up to 125°
Accuracy	±0.3% of span (typ.)
Operating Temp.	-40°C to +85°C (-40°F to +185°F)
Enclosure Material	Painted Aluminum
Protection Rating	IP65 / NEMA 4X
Explosion Protection	None (General Purpose, non-Ex)
Weight	Approx. 1.7 kg (3.75 lbs)

Main Features and Advantages

The standout feature of the ABB V18345-2010521001 is its Fail-Freeze safety logic. In critical processes, such as boiler desuperheating or certain chemical reactions, an uncontrolled move to a fail-safe position can be as dangerous as the fault itself. The ABB V18345-2010521001 addresses this by locking the air pressure in both actuator chambers, holding the valve exactly where it was when the fault occurred. This provides a crucial layer of safety and stability.

Commissioning the ABB V18345-2010521001 is exceptionally straightforward, thanks to its single-button “Autoadjust” function. This automated process optimizes the positioner’s control parameters for the connected actuator, including zero point, range, and dead band, without requiring any special tools or in-depth technical knowledge. This significantly reduces installation time and ensures optimal performance from the start. Furthermore, the built-in HART communication allows for remote access to a wealth of diagnostic data, including valve movement counters and total travel, which can be used for predictive maintenance and to prevent unexpected failures.

The ABB V18345-2010521001 is designed for seamless integration with a wide range of actuators. It can be mounted on linear actuators conforming to DIN/IEC 534/NAMUR standards and on rotary actuators conforming to VDI/VDE 3845 standards. The universal mounting kit simplifies installation, while the robust die-cast aluminum housing and IP65 rating ensure long-term reliability in demanding industrial environments. The inclusion of a mechanical position indicator provides a clear visual reference of the valve’s position, even if the electronic display is not powered, adding an extra layer of operational safety.