Description
Product Description
The ABB V18345-1017121001 is a TZIDC electro-pneumatic positioner. It controls valves with high precision. This device uses a 4-20 mA input signal. The positioner works with linear or rotary actuators. Made for harsh industrial environments.
What This Positioner Does
– Converts electrical signal to pneumatic pressure – Positions valve actuators accurately – Works in fail-safe or fail-freeze mode – Consumes very little air (<0.03 kg/h) – Works with supply pressure from 1.4 to 6 bar
Key Features at a Glance
– Intelligent configurable design – Built-in indicator and operator panel – IP65 / NEMA 4X aluminum housing – ATEX Ex ia IIC T6 explosion protection – Single acting with fail freeze on power loss – Two-wire 4-20 mA technology – Very low air consumption
Technical Specifications
– Brand: ABB – Model number: V18345-1017121001 – Series: TZIDC – Product type: Electro-Pneumatic Positioner – Input signal: 4-20 mA (two-wire) – Supply pressure: 1.4 to 6 bar (20 to 90 psi) – Air consumption: Less than 0.03 kg/h (0.015 scfm) – Housing material: Aluminum, varnished – Protection class: IP65 / NEMA 4X – Color: Black RAL 9005 matte, cover Pantone 420 – Pneumatic connections: 1/4-18 NPT or G 1/4 – Cable connection: 1/2-14 NPT thread – Weight: 1.7 kg
Model Number Breakdown
V18345-1017121001 │ │ │ │ │ │ │ │ └─ 1 = Mechanical kit with SJ2-SN proximity switches │ │ │ │ │ │ │ └─── 0 = Optional kit for digital feedback │ │ │ │ │ │ └───── 0 = No analog/digital feedback module │ │ │ │ │ └─────── 2 = 1/4-18 NPT air, 1/2-14 NPT cable │ │ │ │ └───────── 1 = Single acting, fail freeze │ │ │ └─────────── 7 = ATEX Ex ia IIC T6 │ │ └───────────── 1 = 4-20 mA with LKS adapter plug │ └─────────────── 0 = Alu case, IP65, for linear/rotary └────────────────────── V18345 = TZIDC series
Housing and Mounting
– Case made of aluminum with electrostatic varnish – Epoxy resin, stove-hardened finish – IP65 protection against dust and water jets – Mounts to linear actuators (DIN/IEC 534 / NAMUR) – Mounts to rotary actuators (VDI/VDE 3845) – Ready for integral mounting
Explosion Protection
– ATEX certification: Ex II 2 G – Protection type: EEx ia IIC T6 – Safe for hazardous gas environments – Intrinsically safe design
Fail Safe Behavior (Power Failure)
– Single acting output – Fail freeze mode – holds last position – No air supply needed to maintain position
Digital Input Specifications
– Logical state “0”: 0 to 5 V DC – Logical state “1”: 11 to 30 V DC – Use for external control signals
Digital Output (NAMUR per DIN 19234)
– Supply voltage: 5 to 11 V DC – Compatible with standard NAMUR sensors – Use for position feedback
Optional Position Feedback
– Mechanical kit for digital feedback included – Uses proximity switches SJ2-SN (NC or logical 1) – No analog feedback module on this version
Installation Guide
– Mount on linear or rotary actuator first – Connect air supply (1.4 to 6 bar clean air) – Wire 4-20 mA input signal to terminals – Connect optional digital I/O as needed – Set fail freeze behavior during config – Keep cable bend radius generous – Use 1/2-14 NPT fitting for cable entry
Debugging & Maintenance
– Use built-in operator panel for setup – Check indicator for real-time position – Low air consumption means less maintenance – No tools needed for configuration – Monitor digital output for position confirmation
Compatibility
– Works with linear actuators (DIN/IEC 534 / NAMUR) – Works with rotary actuators (VDI/VDE 3845) – Accepts 4-20 mA from any standard controller – Use with ABB or third-party valves
What’s in the Box
– 1 x V18345 TZIDC positioner – 1 x Mechanical kit with SJ2-SN switches – No mounting bracket included – No air fittings included – Manual available online
Warranty & Shipping
– 12 months warranty from purchase date – Covers manufacturing defects only – Shipping methods: FedEx, UPS, DHL – Fast worldwide delivery available
Typical Applications
– Chemical plant valve control – Oil and gas pipelines – Power plant steam valves – Hazardous area installations (ATEX Zone 1, 2) – Food and beverage processing
Diagnostic Capabilities
– Built-in position indicator – Digital output confirms valve position – Operator panel shows configuration status – Monitor input signal for loop health
FAQ – Frequently Asked Questions
Q1: What does “fail freeze” mean on power loss?
A: Fail freeze holds the valve in its last position. The valve will not move until power returns.
Q2: Can I use this positioner with 24V DC digital inputs?
A: Yes. 24V DC is within the “logical 1” range of 11-30V DC. It works perfectly.
Q3: From experience, what causes most calibration issues?
A: Dirty air supply. Oil or water in the air line blocks internal passages. Install a good air filter before the positioner.
Q4: Why does my positioner show wrong position on the indicator?
A: You need to run auto-calibration. Use the operator panel to start the auto-calibrate routine. It takes 2 minutes.
Q5: Is this positioner safe for Zone 0 hazardous areas?
A: No. ATEX Ex ia IIC T6 covers Zone 1 and Zone 2 only. For Zone 0, choose a different protection type.
Q6: Does the 12 month warranty cover water damage?
A: No. IP65 means it resists water jets. Submersion or pressure washing voids the warranty.
Q7: Which shipping method is fastest for emergency replacements?
A: DHL Express Worldwide for international. FedEx Priority for North America. UPS Next Day for Europe.
Q8: Can I convert this from single acting to double acting?
A: No. This V18345-1017121001 is fixed as single acting. Order a different model for double acting.
Selection Guide
– Step 1: Check your actuator type (linear or rotary) – Step 2: Verify supply pressure (needs 1.4 to 6 bar) – Step 3: Confirm fail behavior required (fail freeze vs fail close) – Step 4: Check hazardous area classification (ATEX Zone 1 or 2) – Step 5: Decide if you need analog position feedback (this has none) – Pro tip: Buy an LKS adapter for easy configuration. It connects to your laptop and speeds up setup by 10x.
Need help selecting the right positioner? Contact our team.
Contact Information
For inquiries: +86 158 8020 0923 (WhatsApp)
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