Description
ABB V18345-1021151001 TZIDC Smart Electro-Pneumatic Digital Valve Positioner
ABB V18345-1021151001 is a TZIDC series two-wire HART smart digital valve positioner, the core electro-pneumatic control unit connecting DCS/PLC control signals and pneumatic control valves for industrial process flow, pressure and temperature closed-loop regulation. This ABB V18345-1021151001 receives standard 4–20mA analog setpoint signals with built-in HART communication protocol, converts electrical signals into precise pneumatic output to drive single/double-acting linear and rotary actuators, and integrates high-precision position feedback, self-adaptive PID control and full valve diagnostic logic. As a mainstream SIL2/3 safety-certified intelligent valve control spare part of ABB process automation portfolio, V18345-1021151001 supports automatic stroke calibration, linear/equal percentage valve characteristic matching and on-site LCD parameter display, widely deployed in petrochemical, thermal power, water treatment and pharmaceutical continuous production process control loops.
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Basic Procurement Parameters
- Brand: ABB
- Model: V18345-1021151001 (TZIDC standard HART version)
- Availability: Original factory new sealed stock, fully calibrated tested refurbished positioners available
- Delivery Time: 1–5 working days for in-stock inventory; 8–10 weeks for factory backorder shipments
- Guarantee: 12-month full warranty valid from shipment date
- Condition: Brand new unopened OEM / Fully overhauled, air circuit cleaned, auto-calibrated and communication tested refurbished
- Communication Protocol: 4–20mA two-wire + HART 7
- Control Signal Input: 4–20mA DC, load impedance ≤485Ω @20mA
- Supply Air Pressure: 1.4–6 bar (20–90 psi) clean instrument air (ISO 8573-1 Class 3)
- Pneumatic Output: Dual air outlets for single/double acting actuators
- Position Accuracy: ±0.5% full stroke
- Control Algorithm: Auto-adaptive P/PI/PID adjustable control modes
- Stroke Range: Linear 0–100mm; Rotary 0–90° / 270° compatible
- Display: Local LCD digital screen for parameter reading & on-site calibration
- Safety Certification: ATEX Ex ib IIC T6, IECEx, SIL2 / SIL3 functional safety certified
- Protection Class: IP66 / NEMA 4X aluminum alloy housing
- Operating Temperature: -40°C ~ +80°C ambient
- Air Consumption: Low steady air consumption <0.03kg/h
- Mounting Standard: NAMUR linear / VDI/VDE 3845 rotary actuator universal mounting
- Power Supply Range: 11–30VDC two-wire loop powered
- Built-in Functions: Valve friction monitoring, air supply fault diagnosis, stroke deviation alarm, split range control
Key Features & Advantages
- HART two-wire intelligent communication with complete valve self-diagnosis, remotely upload valve wear, air pressure and stroke deviation data to DCS without extra signal wiring
- One-click automatic stroke calibration and self-adaptive PID algorithm, automatically matches linear, equal percentage and quick-opening valve characteristics to shorten on-site commissioning time
- IP66 fully dustproof/waterproof aluminum housing plus global explosion-proof certification, stable long-term operation in high-humidity, dust and flammable hazardous process workshops
Industry Application Scenarios
- Petrochemical industry: Refinery pipeline flow, pressure regulating valve intelligent positioning control
- Thermal power plants: Boiler steam, flue gas and water supply pneumatic control valve closed-loop adjustment
- Water treatment plants: Sewage dosing, filtration and flow balance automatic control valve systems
- Pharmaceutical fine chemical processing: Constant temperature & constant pressure precision process regulating valves
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