ABB TZIDC Intelligent Valve Positioner – Reliable Control for Hazardous Areas

Ensure precise and safe valve operation with the ABB V18345-1011121001. This intelligent electro-pneumatic positioner is designed for demanding applications. It combines advanced control with essential safety features. The unit includes built-in ATEX explosion protection. It also provides analog position feedback for system monitoring. The robust IP65 aluminum housing ensures durability in tough industrial environments.

Decoding Your Model: V18345-1011121001 Specifications

The full part number V18345-1011121001 reveals the exact configuration of your device. Each digit maps to a specific feature, as detailed below:

• Base Model (V18345): TZIDC series intelligent electro-pneumatic positioner.
• Digit 1-2 (Case): '10' – Aluminum enclosure with IP65/NEMA 4X rating, no mechanical indicator.
• Digit 3 (Input): '1' – Standard 4-20 mA two-wire input with LKS adapter connector.
• Digit 4 (Explosion Proof): '1' – ATEX certified (Ex II 2 G EEx ib II C T6).
• Digit 5 (Action): '1' – Single-acting output with fail-safe function.
• Digit 6 (Connections): '2' – 1/2" NPT electrical entry, 1/4" NPT pneumatic port.
• Digit 7 (Feedback): '1' – Plug-in analog position feedback module (4-20 mA).
• Digit 8-9 (Mech. Feedback): '00' – No mechanical feedback kit.
• Digit 10 (Design): '1' – Standard product finish.

Core Technical Performance Data

• Air Supply: Requires clean, dry instrument air per DIN/ISO 8573-1, Class 3.
• Supply Pressure: Operates from 1.4 to 6.0 bar (20 to 90 psi).
• Air Consumption: Very low, less than 0.03 kg/h.
• Control Accuracy: High precision with ≤ 0.5% characteristic deviation.
• Adjustable Tolerance: Flexible tolerance band from 0.3% to 10%.
• Configurable Dead Band: Can be set from 0.1% to 10%.
• Signal Resolution: High resolution with > 4000 digital steps.
• Response Speed: Fast 20-millisecond sample rate.
• Temperature Stability: Drift ≤ 0.5% per 10°C ambient change.
• Vibration Resistance: Accuracy within ±1% under 10 g / 80 Hz vibration.
• Seismic Rating: Complies with DIN/IEC 68-3-3 Class III for earthquakes.
• Mounting: Performance unaffected by orientation.
• Weight: 1.7 kg (3.75 lbs).

Installation & Integration Notes

This positioner is ready for installation on single-acting actuators. Its ATEX certification makes it suitable for use in Zone 1/21 hazardous areas. The included analog feedback allows easy integration into your control system for real-time valve position monitoring. Always connect to a clean, dry air supply as specified for optimal performance and longevity.

Support, Warranty & Fast Shipping

We provide full support for your automation needs. This product is covered by a solid 12-month warranty against defects. We ensure prompt delivery to keep your projects on schedule. Choose from our reliable global shipping partners: FedEx, UPS, or DHL.

Frequently Asked Questions

What is the difference between ATEX EEx ib and EEx ia protection?

The V18345-1011121001 has EEx ib protection. It is safe for use in Zone 1 hazardous areas. EEx ia offers a higher safety level for Zone 0.

Does this model's fail-safe action require a spring-return actuator?

Yes. The 'fail-safe' function works with a spring-return (single-acting) actuator. On failure, the spring moves the valve to its safe position.

What quality of instrument air is required?

It needs clean, dry air per Class 3 standards. Maximum particle size is 5 µm. The pressure dew point must be 10°C below the operating temperature.

Can I change the control characteristic curve?

Yes. You can select linear, equal percentage, or create a fully custom curve using up to 20 reference points for flexible process matching.

Is the analog feedback signal isolated from the control input?

The plug-in module provides a separate 4-20 mA output signal. This signal represents the valve position independently from the control input.

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