ABB TZIDC HART Communication Positioner with Double Acting Output

Take control with the ABB V18345-2020521001. This advanced electro-pneumatic positioner features HART protocol communication for easy configuration and diagnostics. It works with both single and double-acting actuators. The rugged aluminum housing with a clear mechanical indicator ensures reliability in tough industrial environments. Perfect for precise valve control.

Product Specifications

• Full Model Number: ABB V18345-2020521001
• Product Type: TZIDC Electro-Pneumatic Positioner
• Input Signal: 4-20mA two-wire with HART FSK module
• Output Action: Double acting, Fail-Freeze on power loss
• Position Feedback: Plug-in 4-20mA analog feedback module
• Housing Protection: IP65 / NEMA 4X Aluminum with position indicator
• Mounting: Fits linear (DIN/IEC 534) & rotary (VDI/VDE 3845) actuators
• Air Connections: Thread 1/4-18 NPT
• Electrical Connections: Thread 1/2-14 NPT
• Weight: 1.7 kg

Detailed Model Code: V18345-2020521001

Each part of the code 2020521001 tells a story about its features.

Housing & Communication:

• V18345: Intelligent TZIDC positioner series.
• 2: Aluminum IP65 case with mechanical position indicator.
• 0: (Placeholder, not used in this suffix).
• 2: 4-20mA two-wire input with HART communication module.

Safety & Function:

• 0: Standard model, no explosion protection.
• 5: Double acting output with fail-freeze function.
• 2: Connections: 1/2-14 NPT cable & 1/4-18 NPT air.

Options & Finish:

• 1: Includes analog 4-20mA position feedback module.
• 0: No optional digital feedback kit.
• 0: (Placeholder, not used).
• 1: Standard black (RAL 9005) paint finish.

Technical Performance Data

• Input Current Range: 3.8 mA to 25 mA.
• Load Voltage at 20mA: 8.7 V DC.
• Input Impedance: Approximately 435 ohms.
• Supply Air Pressure: Up to 6 bar (90 psi).
• Air Capacity @ 1.4 bar: ~5.0 kg/h (2.3 scfm).
• Air Capacity @ 6 bar: ~13 kg/h (6.0 scfm).
• Travel Range (Rotary): 25° to 120° (270° optional).
• Travel Range (Linear): 25° to 60°.
• Shut-off Adjustment: 0-45% and 55-100%.
• Operating Temperature: -40°C to +85°C.

Key Benefits & Applications

• HART Smart: Enables digital communication for setup and monitoring.
• Double Acting: Controls actuators requiring air to open and close.
• Fail-Freeze Safety: Actuator holds its last position on power loss.
• Visual Indicator: Mechanical scale for easy on-site position reading.
• Wide Compatibility: Works with most common linear and rotary valves.

Warranty & Global Delivery

This product is covered by a 12-month warranty. We ensure reliable performance. Orders ship quickly worldwide via FedEx, UPS, or DHL. You will receive full tracking information.

Frequently Asked Questions

What does "fail-freeze" mean for the output?

If electrical power fails, the V18345-2020521001 blocks air to the actuator. The valve stays in its last position for process safety.

How do I configure or diagnose this positioner?

Use any standard HART communicator on the 4-20mA loop. This allows remote configuration and access to diagnostic data.

Can it control a double-acting piston actuator?

Yes. The double-acting (5) output type is specifically designed for actuators that need air to both open and close.

What is the split range configuration?

You can set the positioner to respond to only a part of the 4-20mA signal (e.g., 8-16mA), allowing control of multiple valves from one signal.

Is a booster required for high air capacity?

For maximum air flow (13 kg/h), a supply pressure of 6 bar is needed. An optional booster can be requested for higher demand.

© 2025 Ubest Automation Limited. All rights reserved.
Original Source: https://www.ubestplc.com/
Contact: sales@ubestplc.com | Phone: +86 180 3000 5825