V18345-2010521001 ABB TZIDC Electro-Pneumatic Positioner (Double Acting)
Oiltech Controls Limited’s Insight
- The ABB TZIDC V18345-2010521001 is a high-spec digital positioner distinguished by its Double Acting pneumatic output and specialized Fail-Freeze safety function.
- Unlike standard fail-safe models, the “Fail-Freeze” logic ensures that upon loss of electrical power, the positioner locks the pneumatic pressure in both chambers, holding the valve in its last controlled position—critical for preventing process surges.
- This configuration features an integrated Analog Position Feedback module (4–20 mA) for closed-loop verification and a mechanical indicator for instant visual confirmation on the plant floor.
- Equipped with the “Single-Button” Autoadjust feature, commissioning is fully automated, optimizing PID parameters and travel limits without complex manual configuration.
Configuration Breakdown (Model Hierarchy)
- V18345-2010521001
- ↳ Case / Mounting [20]: Aluminum, varnished, with Mechanical Indicator; Universal Mounting
- ↳ Input / Communication [1]: 4 … 20 mA, two-wire, with LKS adapter connector
- ↳ Explosion Protection [0]: Without (General Purpose)
- ↳ Output / Safe Position [5]: Double acting, Fail-Freeze logic
- ↳ Connections [2]: Cable: 1/2-14 NPT Thread | Air: 1/4-18 NPT Thread
- ↳ Option Module [1]: Plug-in Analog Position Feedback (4 … 20 mA range)
- ↳ Mechanical Feedback [00]: Without optional mechanical kit
- ↳ Design [1]: Standard varnish and coding
Technical Engineering Data
| Parameter | Technical Data |
|---|---|
| User Interface | 2-line LC display with 4-pushbutton panel |
| Safety Logic | Fail-Freeze (Blocks air in both chambers) |
| A/D Resolution | > 4000 steps |
| Input Impedance | 435 ohms @ 20 mA |
| Weight | 1.7 kg (Approx. 3.75 lbs) |
Advanced Diagnostic & Monitoring
- Operational Tracking: Detects setpoint out-of-range, positioning time-out, and internal temperature excursions.
- Predictive Maintenance: Internal counters track the total number of movements and total valve travel distance.
- Local Feedback: The LC display provides real-time position percentage and alphanumeric error codes for rapid troubleshooting.
- HART Integration: Full access to extended maintenance parameters and limit value definitions via HART communication.
Oiltech Controls Limited Professional Review
The V18345-2010521001 is the preferred choice for large double-acting actuators where “Fail-Safe” venting could cause process instability. The mechanical indicator is a vital addition, allowing for verification even if the display is obscured. Technical Note: For optimal “Fail-Freeze” performance, ensure your air supply is clean and dry per ISO 8573-1 Class 3, as moisture can affect the locking pilot valves over time.
Commercial Logistics & Warranty
- Warranty: 12-Month Quality Assurance guaranteed.
- Shipping: Worldwide Express via FedEx, UPS, or DHL.
- Dispatch: Standard order fulfillment within 24-48 hours.
Contact Information Inquiries: info@oiltechcontrols.com , +86 158 8020 0923
Copyright © 2026 Oiltech Controls Limited. All rights reserved.
Original Source: https://www.oiltechcontrols.com/
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