ABB TZIDC Intelligent Electro-Pneumatic Positioner

Discover the advanced ABB V18345-2021421001 from the renowned TZIDC series. This intelligent electro-pneumatic positioner delivers exceptional control for industrial valves. It features a built-in HART communication module and meets ATEX Ex II 2 G EEx ib II C T6 explosion protection standards. The device ensures reliable operation in demanding environments with its robust aluminum housing.

Core Features and Configuration

• The V18345-2021421001 offers a versatile 4...20 mA two-wire input with a connector for an LKS adapter.
• It includes an integrated FSK module for HART communication, enabling advanced diagnostics and configuration.
• A clear mechanical position indicator provides visual feedback on the actuator's status.
• The output function is double-acting with a fail-safe mechanism for enhanced safety during power loss.
• Connections feature a 1/2-14 NPT cable thread and a 1/4-18 NPT air pipe thread for flexible installation.

Decoding the Model: V18345-2021421001

• V18345 (TZIDC): Intelligent, configurable positioner with an operator panel.
• Case [2]: Aluminum, IP65/NEMA 4X, with a mechanical position indicator.
• Input [2]: 4-20mA two-wire input with LKS plug and HART communication module.
• Explosion Protection [1]: Certified for ATEX Zone 2 hazardous areas.
• Output [4]: Double-acting, fail-safe (moves to a predefined safe position).
• Connections [2]: 1/2-14 NPT (cable) and 1/4-18 NPT (air).
• Feedback Module [1]: Plug-in module for analog 4-20 mA position feedback.

Technical Specifications

• Brand & Model: ABB V18345-2021421001 (TZIDC Series).
• Input Signal: 4 to 20 mA, supporting split-range operation from 20% to 100%.
• Supply Pressure: 1.4 to 6 bar (20 to 90 psi).
• Air Consumption: Very low, under 0.03 kg/h independent of supply pressure.
• Housing: Black aluminum (RAL 9005), rated IP65 / NEMA 4X for dust and water resistance.
• Characteristic Curves: Linear, equal percentage (1:25, 1:50, etc.), or user-defined with 20 points.
• Digital Input: 24V DC control for functions like hold, disable, or move to preset position.
• Weight: Approximately 1.7 kg, making it sturdy yet manageable for installation.

Operation and Advanced Control

• You can set the action to direct or reverse based on your signal requirements.
• The digital input allows you to select protective functions like "hold last position" or "move to 0%".
• Activate these safety functions by removing the 24V DC control signal from the device.
• The positioner provides excellent抗干扰能力 (anti-interference) for stable performance near electrical noise.
• It operates effectively across standard industrial temperature ranges for wide applicability.

Installation and Packaging

• Mount the unit to linear actuators per DIN/IEC 534/NAMUR or rotary actuators per VDI/VDE 3845.
• The package includes the ABB positioner unit, analog feedback module, and necessary hardware.
• You will also receive a comprehensive user manual for setup and configuration guidance.
• We ship all orders promptly using reliable services like FedEx, UPS, and DHL.

Frequently Asked Questions (FAQ)

• What is the key feature of the ABB V18345-2021421001?
  Its integrated HART communication and ATEX explosion protection make it ideal for advanced, hazardous area applications.
• How does the fail-safe function work?
  In a power failure, the double-acting output drives the actuator to a pre-configured safe position (0% or 100%).
• Can I configure the control curve?
  Yes, you can choose from linear, equal percentage, or create a custom curve with 20 reference points.
• What does the analog feedback module do?
  It provides a separate 4-20 mA signal proportional to the valve's actual position for monitoring.
• Is this model suitable for rotary actuators?
  Absolutely. The ABB TZIDC positioner is designed for mounting on both linear and rotary actuators.

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