Description
Product Description
The ABB V18345-2010421001 is a TZIDC electro-pneumatic positioner. This version gives you double acting fail safe operation. It includes an analog position feedback module. The device works with linear or rotary actuators.
What This Positioner Does
– Controls double acting pneumatic actuators – Sends 4-20 mA position feedback to your system – Moves valve to safe position on power loss – Consumes very little air (<0.03 kg/h) – Works with supply pressure from 1.4 to 6 bar
Key Features at a Glance
– Double acting with fail safe mode – Built-in analog feedback (4-20 mA) – Mechanical position indicator on housing – IP65 / NEMA 4X aluminum case – Intelligent configurable design – Two-wire 4-20 mA input – Very low air consumption
Technical Specifications
– Brand: ABB – Model number: V18345-2010421001 – Series: TZIDC – Product type: Electro-Pneumatic Positioner – Input signal: 4-20 mA (two-wire) – Analog feedback: 4-20 mA (included) – 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
V18345-2010421001 │ │ │ │ │ │ │ │ └─ 1 = Standard design/varnish │ │ │ │ │ │ │ └─── 0 = No mechanical kit for digital feedback │ │ │ │ │ │ └───── 1 = Analog feedback module (4-20mA) │ │ │ │ │ └─────── 2 = 1/4-18 NPT air, 1/2-14 NPT cable │ │ │ │ └───────── 4 = Double acting, fail safe │ │ │ └─────────── 0 = No explosion protection │ │ └───────────── 1 = 4-20 mA with LKS adapter plug │ └─────────────── 2 = Alu case with mechanical indicator └────────────────────── V18345 = TZIDC series
Housing and Mounting
– Case made of aluminum with electrostatic varnish – Epoxy resin, stove-hardened finish – Mechanical position indicator on housing – IP65 protection against dust and water jets – Mounts to linear actuators (DIN/IEC 534 / NAMUR) – Mounts to rotary actuators (VDI/VDE 3845)
Analog Position Feedback Module
– Output range: 4-20 mA (configurable split ranges) – Two-wire circuitry – Power supply: 24V DC (10-30V DC) or 48V DC (20-48V DC) – Direct or reverse action (configurable) – Characteristic deviation: less than 1% – On power loss or initialization: output goes above 20 mA (alarm)
Digital Position Feedback (Optional – Not Included)
– Two switches for digital feedback – Adjustable positions from 0% to 100% – Current circuits to DIN 19234/NAMUR – Supply voltage: 5 to 11 V DC – Signal current under 1.0 mA = Logical “0” – Signal current over 2.0 mA = Logical “1” – Configurable effective direction
Fail Safe Behavior
Double acting fail safe mode: – Output 1 depressurizes on power loss – Valve moves to safe position – For double acting: output 2 pressurizes
Alternative fail freeze (with shutdown module):
Both outputs close on power loss
Valve “freezes” in current position
Shutdown Module Option
– Supply voltage: 24V DC (20-30V DC) – Electrically isolated from input signal – Safe position activates when voltage drops below 5V – AK approval: AK 4 to DIN V 19250 – Works independently of mother board
Digital Input Specifications
– Logical state “0”: 0 to 5 V DC – Logical state “1”: 11 to 30 V DC
Digital Output (NAMUR per DIN 19234)
– Supply voltage: 5 to 11 V DC – Compatible with standard NAMUR sensors
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 – Wire 4-20 mA feedback to monitoring system – Set fail safe direction during configuration – Use 1/2-14 NPT fitting for cable entry – Keep air lines clean and dry
Debugging & Maintenance
– Watch mechanical indicator for rough position check – Monitor 4-20 mA feedback for accuracy – Run auto-calibration from operator panel – Low air consumption means less maintenance – Check analog feedback deviation (<1% is normal)
Compatibility
– Works with double acting pneumatic actuators – Accepts 4-20 mA from any standard controller – Use with ABB or third-party valves – Mounts to linear or rotary actuators
What’s in the Box
– 1 x V18345 TZIDC positioner – 1 x Analog feedback module (installed) – Mechanical position indicator (built-in) – No mounting bracket included – No air fittings included
Warranty & Shipping
– 12 months warranty from purchase date – Covers manufacturing defects only – Shipping methods: FedEx, UPS, DHL – Fast worldwide delivery available
Typical Applications
– Double acting valve control – Chemical processing plants – Oil and gas facilities – Power generation – Applications needing 4-20 mA position feedback
Diagnostic Capabilities
– Real-time position via analog feedback – Mechanical indicator for visual check – Characteristic deviation monitoring (<1%) – Alarm output on power loss or initialization
FAQ – Frequently Asked Questions
Q1: What is the difference between fail safe and fail freeze?
A: Fail safe moves valve to safe position. Fail freeze holds valve in last position. Choose based on your safety needs.
Q2: Does this positioner work with single acting actuators?
A: No. This V18345-2010421001 is double acting only. Use V18345-1017121001 for single acting.
Q3: From experience, how do I set up the analog feedback range?
A: Use the operator panel. Navigate to feedback settings. Set 0% and 100% positions. The module accepts split ranges too.
Q4: What happens to the feedback signal during auto-calibration?
A: The feedback output goes above 20 mA (alarm level). Your control system will see this as a fault. Normal operation resumes after calibration.
Q5: Can I add the shutdown module later in the field?
A: No. The shutdown module requires factory installation. Order the correct version with shutdown module pre-installed.
Q6: Does the 12 month warranty cover the analog feedback module?
A: Yes. Both the positioner and feedback module have 12 month coverage. This includes the 4-20 mA output circuit.
Q7: Which shipping method do you recommend for critical spares?
A: DHL Express Worldwide for fastest delivery. FedEx Priority for North America. UPS Next Day for Europe.
Q8: What does the mechanical position indicator show during power loss?
A: It shows the actual valve position mechanically. This works even with no power or air supply.
Selection Guide
– Step 1: Confirm your actuator type (double acting vs single acting) – Step 2: Check if you need position feedback (this has 4-20 mA analog) – Step 3: Verify fail behavior (fail safe vs fail freeze) – Step 4: Decide if you need explosion protection (this has none) – Step 5: Check if you need mechanical indicator (this has one) – Pro tip: Order an LKS adapter for easy configuration. It connects to your laptop and saves hours of setup time.
Need help selecting the right positioner? Contact our team.
Contact Information
For inquiries: +86 158 8020 0923 (WhatsApp)
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