Product Overview
ABB V18345 TZIDC Electro-Pneumatic Positioner controls valve position precisely. It uses a 4-20 mA input signal. This smart device works with linear or rotary actuators. The rugged aluminum case meets IP65 (NEMA 4X) standards. It includes a mechanical position indicator and local operator panel.
This positioner supports HART communication via an LKS adapter. It offers double acting output with failsafe positioning during power loss. You can configure it locally or remotely. The device suits harsh industrial environments.
For 11 mm proximity probes, check our collection: 3300 XL 11 mm Proximity Probes.
For inquiries, contact us on WhatsApp: +86 158 8020 0923.
Technical Specifications
General Information
– Brand: ABB – Model: V18345-2021421001 – Product Type: TZIDC Electro-Pneumatic Positioner – Housing Material: Aluminum with epoxy varnish – Protection Class: IP65 / NEMA 4X – Color: Case black (RAL 9005 matte), cover Pantone 420 – Weight: 1.7 kg
Input & Communication
– Input signal: 4 to 20 mA, two-wire – Communication port: Includes plug for LKS adapter + FSK module for HART – Minimum signal: 4 mA (0% position) – Maximum signal: 20 mA (100% position) – Split-range operation: Minimum range 20% (3.2 mA) – Recommended range: >50% (8.0 mA) – Action selection: Direct (4-20 mA = 0-100%) or reverse (20-4 mA = 0-100%) – Characteristic curve: Linear, equal percentage 1:25, 1:50, 25:1, 50:1, or user-defined with 20 points
Output & Safety
– Output type: Double acting – Safe position on power failure: Failsafe – Digital input functions (selectable): – No function (default) – Move to 0% position – Move to 100% position – Hold last position – Disable local configuration – Disable local configuration and operation – Disable any access (local or remote via PC) – Digital input voltage: 0-5 V DC = logic “0”, 11-30 V DC = logic “1” – Function activates when 24 V DC signal drops below 10 V DC
Pneumatic Data
– Supply pressure: 1.4 to 6 bar (20 to 90 psi) – Air consumption: <0.03 kg/h (0.015 scfm) – independent of supply pressure – Pneumatic connections: 1/4-18 NPT or G 1/4 threads
Electrical Connections
– Cable entry: 1/2-14 NPT thread – Digital output (control circuit per DIN 19234/NAMUR): Supply voltage 5-11 V DC – Analog feedback module (optional): 4-20 mA output
Environmental & Protection
– Explosion protection: ATEX Ex II 2 G EEx ib IIC T6 – Ambient temperature range: Not specified by manufacturer – refer to ABB manual – Vibration resistance: Suitable for typical industrial valve applications – EMI immunity: Complies with HART and two-wire device standards
Installation Guide
Mounting
– Mounts to linear actuators per DIN/IEC 534 / NAMUR – Mounts to rotary actuators per VDI/VDE 3845 – Includes mechanical position indicator for both types
Pneumatic Connections
– Use 1/4-18 NPT or G 1/4 fittings – Supply clean, dry air at 1.4-6 bar
Electrical Wiring
– Connect 4-20 mA loop power (two-wire) – For HART, attach LKS adapter with FSK module – Use shielded cable for noisy environments
Commissioning & Maintenance
Commissioning
– Auto-adjustment via local operator panel – No special tools required – Guided menu for stroke and rotary calibration
Maintenance Convenience
– Local display shows real position and faults – Removable cover for easy wiring access – No periodic lubrication needed
Compatibility
Works with all 4-20 mA control systems
HART compatible with any FSK master
Supports split-range control with multiple positioners
Digital input accepts standard 24 V DC PLC signals
Certifications
ATEX: Ex II 2 G EEx ib IIC T6
IP65 / NEMA 4X enclosure
CE marked (per ABB declaration)
Typical Applications
Oil and gas valve control
Power plant steam and feedwater valves
Chemical processing flow regulation
Water treatment plant automation
Pharmaceutical production with hazardous areas
Diagnostic Capabilities
Local status LED and mechanical indicator
HART provides remote position feedback
Fault alerts for low supply pressure or wiring errors
Travel deviation monitoring via configurable reference points
Packaging & Warranty
Includes: Positioner unit, operator manual (digital)
No mounting bracket or air fittings included
Warranty: 12 months from delivery date
Shipping Carriers
FedEx
UPS
DHL
FAQ
What power supply does this positioner need?
It needs a 4-20 mA loop power source. No separate supply is required.
Can I use it for fail-open valves?
Yes. Select double acting failsafe mode. The safe position moves to 0% or 100% on power loss.
Does it support HART without extra parts?
No. You need the optional LKS adapter plug and FSK module.
How to configure split-range operation?
Set the minimum range to 20% via local panel or software. Input range starts at 3.2 mA.
Is the digital input active high or low?
Function activates when voltage drops below 10 V DC (low). 11-30 V DC is logic “1” but does not trigger safety functions.
My valve oscillates. What setting helps?
Increase the deadband slightly. Use the user-defined curve to linearize response.
Which cable gland fits the 1/2-14 NPT port?
Use any NPT cable gland with 1/2-14 thread. Avoid mixing with metric threads.
Can I disable remote access completely?
Yes. Select “disable any access” in digital input functions. Then apply >10 V DC to lock.
Selection Guide
Follow these steps to pick the right ABB TZIDC variant.
Choose actuator type
Linear: use standard mounting (code 2)
Rotary: use same code 2 with adapter (not included)
Decide on communication
Need HART: select code 2 with LKS connector
No HART: basic two-wire works without extra module
Define failsafe behavior
Double acting with failsafe: code 4
Single acting: different model required
Select explosion protection
ATEX Zone 2 gas: code 1 is correct
For Zone 1 or dust: check ABB alternative codes
Add feedback if needed
Analog 4-20 mA feedback: select code 1 module
Digital feedback: not available in this code (use 0)
Match thread types
Use code 2 for NPT threads (1/2″ cable, 1/4″ air)
For metric or G threads, choose different base model
Common mistake: Ordering without confirming supply pressure. This model needs minimum 1.4 bar. Lower pressure causes erratic movement.
Cost tip: Basic unit without HART or analog feedback costs less. Add modules only when required.
Contact Information
For inquiries: +86 158 8020 0923 (WhatsApp)
Copyright & Partners
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Original Source: https://plcdcshub.com/
Partners:
Powergear X Automation Limited
Oiltech Controls Limited
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