{"product_id":"v18345-1020521001-abb-electro-pneumatic-positioner-tzidc-smart-valve-control","title":"V18345-1020521001 ABB Electro-Pneumatic Positioner | TZIDC Smart Valve Control","description":"\n\u003ch3\u003e\u003cstrong\u003eABB V18345-1020521001 TZIDC Electro-Pneumatic Positioner\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #c62828;\"\u003eV18345-1020521001\u003c\/span\u003e\u003c\/strong\u003e is an ABB TZIDC electro-pneumatic positioner designed to regulate pneumatic actuator movement according to a 4–20 mA control signal. Its two-wire input supports HART communication, allowing compatible control systems and handheld tools to access device information and configuration functions.\u003c\/p\u003e\n\n\u003cp\u003eThis configuration features an aluminium housing rated IP65 (NEMA 4X), a double-acting output with fail-freeze behavior, and an optional analog position feedback module. It supports linear or rotary actuator installations when the actuator interface and mounting arrangement match the specified mechanical standards.\u003c\/p\u003e\n\n\u003cp\u003eFor valve automation engineers, the key selection factors are actuator action, mounting interface, air connection size, control signal direction, and feedback requirements. Verify these details before ordering a replacement or integrating the positioner into an existing control loop.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e1. Model Identity and Configuration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eComplete Part Number:\u003c\/strong\u003e V18345-1020521001\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Series:\u003c\/strong\u003e ABB TZIDC\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Electro-Pneumatic Positioner\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuffix Configuration Tree\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cpre\u003e\nV18345-1020521001\n├── V18345\n│   └── TZIDC electro-pneumatic positioner family\n├── 1 — Aluminium housing, varnished\n│   └── IP65 (NEMA 4X)\n│       └── Linear mounting: DIN\/IEC 534 or NAMUR\n│       └── Rotary mounting: VDI\/VDE 3845\n├── 0 — No additional configuration specified\n├── 2 — 4–20 mA two-wire input with HART communication\n├── 0 — Without explosion protection\n├── 5 — Double-acting output, fail freeze\n├── 2 — Cable connection: 1\/2-14 NPT\n│       Air connection: 1\/4-18 NPT\n├── 1 — Plug-in analog position feedback, 4–20 mA\n├── 0 — Without optional mechanical kit for digital feedback\n├── 0 — No additional configuration specified\n└── 1 — Standard design \/ varnish coding\n\u003c\/pre\u003e\n\n\u003cp\u003e\u003cstrong\u003eConfiguration note:\u003c\/strong\u003e This tree follows the supplied suffix descriptions. Confirm the manufacturer's ordering-code documentation before using the breakdown for formal procurement or interchangeability decisions.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e2. Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eV18345-1020521001\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eTZIDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eElectro-Pneumatic Positioner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Input\u003c\/td\u003e\n\u003ctd\u003e4–20 mA, two-wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eHART via FSK module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eVarnished aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIngress Protection\u003c\/td\u003e\n\u003ctd\u003eIP65 (NEMA 4X, as specified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExplosion Protection\u003c\/td\u003e\n\u003ctd\u003eWithout explosion protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActuator Output\u003c\/td\u003e\n\u003ctd\u003eDouble acting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower-Failure Behavior\u003c\/td\u003e\n\u003ctd\u003eFail freeze\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Connection\u003c\/td\u003e\n\u003ctd\u003e1\/2-14 NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePneumatic Connection\u003c\/td\u003e\n\u003ctd\u003e1\/4-18 NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Position Feedback\u003c\/td\u003e\n\u003ctd\u003e4–20 mA plug-in module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Mechanical Kit for Digital Feedback\u003c\/td\u003e\n\u003ctd\u003eNot included in this configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 1.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharacteristic Deviation\u003c\/td\u003e\n\u003ctd\u003e≤ 0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTolerance Band\u003c\/td\u003e\n\u003ctd\u003e0.3–10%, adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDead Band\u003c\/td\u003e\n\u003ctd\u003e0.1–10%, adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\/D Conversion Resolution\u003c\/td\u003e\n\u003ctd\u003eMore than 4000 steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample Rate\u003c\/td\u003e\n\u003ctd\u003e20 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Temperature Influence\u003c\/td\u003e\n\u003ctd\u003e≤ 0.5% per 10°C temperature change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Influence\u003c\/td\u003e\n\u003ctd\u003e≤ ±1% up to 10 g and 80 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeismic Requirements\u003c\/td\u003e\n\u003ctd\u003eSpecified to meet DIN\/IEC 68-3-3 Class III requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Orientation Influence\u003c\/td\u003e\n\u003ctd\u003eNo effect, according to supplied specifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e\u003cstrong\u003e3. Control Direction, Output Behavior, and Valve Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe configured signal action determines how the electrical command maps to valve position.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect action:\u003c\/strong\u003e 4 mA corresponds to 0% position, and 20 mA corresponds to 100% position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReverse action:\u003c\/strong\u003e 20 mA corresponds to 0% position, and 4 mA corresponds to 100% position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput behavior:\u003c\/strong\u003e Increasing or decreasing input signals adjust the OUT 1 pressure according to the configured action.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharacteristic curves:\u003c\/strong\u003e Linear, equal-percentage 1:25 or 1:50, 25:1 or 50:1, plus freely configurable curves using 20 reference points.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eVerify the intended action against the valve's process function before commissioning. A signal-direction mismatch can cause the actuator to move opposite to the controller's intended command.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e4. Suitable Equipment and Industrial Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModulating control valves:\u003c\/strong\u003e Regulate compatible pneumatic valves for flow, pressure, temperature, and liquid-level control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinear pneumatic actuators:\u003c\/strong\u003e Support installations using compatible DIN\/IEC 534 or NAMUR mounting arrangements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotary actuators:\u003c\/strong\u003e Support compatible actuator interfaces conforming to VDI\/VDE 3845.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess plants:\u003c\/strong\u003e Apply in suitable chemical, petrochemical, utility, and general process-control loops, subject to site requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl-system maintenance:\u003c\/strong\u003e Replace matching positioner configurations when the actuator, pneumatic connections, signal direction, and feedback requirements are verified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis model is specified without explosion protection. Do not select it for a hazardous area that requires a certified explosion-protected positioner unless the complete installation design independently satisfies the applicable requirements.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e5. Installation and Commissioning Workflow\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 1 — Confirm mechanical compatibility.\u003c\/strong\u003e Check the actuator type, mounting interface, linkage geometry, and available travel. Confirm the required linear or rotary installation arrangement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 2 — Verify pneumatic connections.\u003c\/strong\u003e Match the 1\/4-18 NPT air connections to the site's tubing and fittings. Check the actuator's air requirements and the instrument air quality specified by the equipment documentation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 3 — Check electrical wiring.\u003c\/strong\u003e Confirm the two-wire 4–20 mA input, loop polarity, cable gland, and HART communication arrangement. Verify that the control system supports the intended communication method.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 4 — Confirm the feedback circuit.\u003c\/strong\u003e The supplied configuration includes a 4–20 mA analog position feedback module. Verify its wiring and receiving input independently from the command signal.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 5 — Configure signal action and travel.\u003c\/strong\u003e Select the intended direct or reverse action and perform the manufacturer's approved commissioning procedure. Confirm that displayed position matches actual actuator movement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStep 6 — Test failure behavior.\u003c\/strong\u003e Validate the specified fail-freeze behavior using an approved site procedure. Do not assume that this positioner will automatically drive the valve to a fully open or fully closed position during power loss.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e6. Field Diagnostics and Troubleshooting\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom\u003c\/th\u003e\n\u003cth\u003ePotential Cause\u003c\/th\u003e\n\u003cth\u003eRecommended Diagnostic Check\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve does not respond to the command\u003c\/td\u003e\n\u003ctd\u003eMissing loop current, incorrect wiring, insufficient air supply, or actuator issue\u003c\/td\u003e\n\u003ctd\u003eCheck the input signal, air supply, pneumatic connections, and actuator freedom of movement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve moves in the wrong direction\u003c\/td\u003e\n\u003ctd\u003eDirect\/reverse action mismatch or incorrect linkage setup\u003c\/td\u003e\n\u003ctd\u003eCompare the configured signal action with the required process response and actual valve travel.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition feedback differs from the command\u003c\/td\u003e\n\u003ctd\u003eIncorrect feedback wiring, mechanical linkage error, or calibration issue\u003c\/td\u003e\n\u003ctd\u003eCompare commanded current, indicated position, and independently observed actuator travel.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve hunts or oscillates\u003c\/td\u003e\n\u003ctd\u003eControl-loop tuning, excessive mechanical friction, air instability, or unsuitable response settings\u003c\/td\u003e\n\u003ctd\u003eInspect actuator movement and air supply, then review positioner settings and process-loop tuning.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHART communication is unavailable\u003c\/td\u003e\n\u003ctd\u003eIncorrect wiring, unsuitable loop conditions, or incompatible communication setup\u003c\/td\u003e\n\u003ctd\u003eCheck the HART interface, loop wiring, and host-device configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve remains at its last position during a power interruption\u003c\/td\u003e\n\u003ctd\u003eExpected fail-freeze configuration or an actuator\/pneumatic condition\u003c\/td\u003e\n\u003ctd\u003eReview the specified failure behavior and verify the actual pneumatic response under an approved test procedure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition accuracy deteriorates after maintenance\u003c\/td\u003e\n\u003ctd\u003eLinkage movement, changed mounting geometry, or calibration drift\u003c\/td\u003e\n\u003ctd\u003eInspect mounting alignment and repeat the approved travel calibration process.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\u003cstrong\u003eDiagnostic principle:\u003c\/strong\u003e Separate electrical, pneumatic, mechanical, and control-loop faults. Record input current, HART status, air conditions, commanded position, actual travel, and feedback current before replacing the positioner.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e7. Global PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eWhen sourcing the \u003cstrong\u003eV18345-1020521001\u003c\/strong\u003e, verify the complete ordering code rather than matching only the TZIDC family name. The double-acting fail-freeze configuration, NPT connection sizes, HART input, and analog feedback option can affect whether the unit suits an installed valve assembly.\u003c\/p\u003e\n\n\u003cp\u003eDuring field maintenance, a command signal that changes without corresponding valve movement should trigger checks of air supply, actuator mechanics, linkage, and signal action. Recalibration alone may not resolve a pneumatic restriction or mechanical binding problem.\u003c\/p\u003e\n\n\u003cp\u003eThe specified 20 ms sample rate and characteristic deviation of ≤ 0.5% are useful selection references, but actual control performance also depends on actuator sizing, valve friction, pneumatic supply, and process-loop tuning.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e8. Warranty, Packaging, and Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e ABB V18345-1020521001 TZIDC Electro-Pneumatic Positioner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month warranty, subject to the applicable seller warranty terms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Options:\u003c\/strong\u003e FedEx, UPS, and DHL, subject to destination and service availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective packaging intended to help safeguard industrial instrumentation during transit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder Verification:\u003c\/strong\u003e Provide the full model number, actuator type, connection requirements, and feedback requirements for compatibility checks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003e9. Frequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ1. Is this configuration suitable for hazardous-area installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe supplied code identifies the unit as having no explosion protection. Check the site's area classification and certification requirements before selecting it for the installation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ2. What should I verify before replacing an existing TZIDC positioner?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompare the complete ordering code, actuator mounting, double-acting configuration, pneumatic thread sizes, HART input, and feedback option. Matching only the series name does not confirm full interchangeability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ3. Can the positioner provide both a command input and an analog position feedback signal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The specified configuration accepts a two-wire 4–20 mA command and includes a plug-in analog position feedback module with a 4–20 mA signal range. Verify the wiring and receiving input requirements separately.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ4. What should a technician check if the valve oscillates around its setpoint?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck actuator friction, linkage integrity, air-supply stability, positioner settings, and process-controller tuning. Change one setting at a time and document the response so that the actual cause can be identified.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ5. Does fail freeze mean the valve moves to a safe open or closed position?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Fail freeze indicates that the configured response is to hold the position rather than automatically travel to a defined end position. Confirm the required process safety response with the actuator design and site safety documentation.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003e10. Request a Quote from Global PLC Spare HUB\u003c\/strong\u003e\u003c\/h3\u003e\n\n\u003cp\u003eGlobal PLC Spare HUB supports industrial automation spare-part sourcing for maintenance, repair, and valve-control applications. Contact our team with the full model number and actuator details to request pricing and configuration verification.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cspan style=\"color: #c62828;\"\u003e\u003cstrong\u003eV18345-1020521001\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e ABB TZIDC\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Electro-Pneumatic Positioner\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eControl Input:\u003c\/strong\u003e Two-wire 4–20 mA with HART\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary SEO Keyword:\u003c\/strong\u003e ABB V18345-1020521001 TZIDC positioner\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRelated Keyword:\u003c\/strong\u003e ABB TZIDC electro-pneumatic valve positioner\u003c\/p\u003e\n","brand":"ABB","offers":[{"title":"Default Title","offer_id":67716295590070,"sku":"V18345-1020521001","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/V18345-1020521001.jpg?v=1792639861","url":"https:\/\/www.plcsparehub.com\/products\/v18345-1020521001-abb-electro-pneumatic-positioner-tzidc-smart-valve-control","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}