ABB V18345-1020121001 Electro-Pneumatic Positioner Single Acting – Genuine

V18345-1020121001 ABB TZIDC Electro-Pneumatic Positioner

Oiltech Controls Limited’s Insight

• The ABB TZIDC V18345-1020121001 is a benchmark in digital valve control, merging robust mechanical engineering with advanced FSK-based HART intelligence.
• This specific “Performance-Ready” build includes a factory-installed analog position feedback module (4–20 mA), allowing the DCS to verify physical valve travel in real-time.
• The “Single Acting, Fail-Safe” logic ensures the actuator returns to a secure position during electrical power loss, preventing process excursions.
• Engineers benefit from the “Single-Button” commissioning philosophy, enabling full automatic stroke calibration in less than 3 minutes.

Configuration Breakdown (Model Hierarchy)

• V18345-1020121001
  • ↳ Case / Mounting [1]: Varnished Aluminum, IP 65 (NEMA 4X), DIN/NAMUR compliant
  • ↳ Input [2]: FSK Module for HART 5.1 Protocol communication
  • ↳ Explosion Protection [0]: Without (General Purpose / Non-Hazardous areas)
  • ↳ Output Logic [1]: Single acting, Fail-Safe (Vents on power failure)
  • ↳ 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 signal range)
  • ↳ Design [1]: Standard varnish and coding

Core Technical Specifications

Application & Diagnostic Capabilities

• Safety Integrity: Suitable for SIL2 safety loops in high-integrity process environments.
• Actuator Versatility: Supports linear (25…60°) and rotary (25…120°) stroke ranges.
• Real-time Feedback: Integrated 4-20mA module for continuous position verification and deviation monitoring.
• Process Protection: Configurable travel time prolongation (0–200s) to eliminate water hammer risks.

Oiltech Controls Limited Professional Review

Field technicians consistently rate the V18345 series as the most stable positioner under high-vibration conditions. Unlike analog units that drift, the V18345-1020121001 locks calibration data in non-volatile memory. Engineer’s Note: Ensure instrument air follows ISO 8573-1 Class 3 standards; while robust, the pilot valve is sensitive to excessive oil carryover or moisture.

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.

Expert FAQ & Selection Guidance

Q: What happens to the valve position if the 4-20mA signal is lost?

A: Because this unit is configured for “Fail-Safe” logic (Output code 1), it will vent the air from the actuator, allowing the internal spring to return the valve to its safe de-energized position.

Q: Is the analog feedback module (4-20mA) active or passive?

A: The feedback module in the V18345-1020121001 is a passive 2-wire module, requiring an external 24V DC power supply from your PLC or control system analog input card.

Q: Can I use this on a rotary actuator without manual stroke adjustment?

A: Yes. During the “Single-Button” Autoadjust process, the positioner automatically detects the travel range and optimizes the PID control parameters for the specific actuator volume.

Selection Tip: When should I enable the “Shut-off” function?

A: We recommend setting the 0% shut-off at ~1% and the 100% shut-off at ~99%. This ensures the positioner applies full supply pressure to the actuator for a guaranteed tight seal against the valve seat.

Q: Will long pneumatic tubing runs affect performance?

A: Yes, long runs can increase positioning time. You can compensate for this by adjusting the “Travel time prolongation” or “Positioning time limit” in the device software to prevent nuisance alarms.

Contact Information Inquiries: info@oiltechcontrols.com , +86 158 8020 0923

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