Description
Product Overview
- ABB V18345-1010551001 is a TZIDC-120 intelligent positioner.
- Model series: V18345.
- This positioner controls pneumatic valves accurately.
- It mounts on linear or rotary actuators.
- Case material: aluminium with varnish coating.
- Protection rating: IP65 (NEMA 4X).
Model Number Breakdown
- V18345-1010551001
- V18345 = TZIDC-120 intelligent positioner
- 1 = Optional mechanical kit for digital feedback (none)
- 0 = No explosion protection
- 5 = Double acting, fail freeze on power loss
- 5 = M20 x 1.5 cable entry, 1/4-18 NPT air pipe
- 1 = Analog position feedback module (4-20mA)
- 0 = No mechanical kit for digital feedback
- 1 = Standard varnish/coding
Technical Specifications
- Brand: ABB
- Full part number: V18345-1010551001
- Product type: TZIDC-120 intelligent positioner
- Input signal: 4 to 20 mA (two-wire)
- Max input: 25 mA / 30 V
- Min current (no feedback): 3.4 mA
- Min current (with feedback): 3.5 mA
- Start current: 3.8 mA
- Load voltage at 20mA: 8.7 V DC
- Impedance at 20mA: 435 ohms
Output Performance
- Output pressure range: 0 to 6 bar (0 to 90 psi)
- Air capacity at 1.4 bar supply: 5.0 kg/h
- Air capacity at 6 bar supply: 13 kg/h
- Output function: for single or double acting actuators
- Fail freeze mode: actuator holds position on power loss
- Shut-off values: 0 to 45% for end position 0%
- Shut-off values: 55 to 100% for end position 100%
Digital Input and Output
- Digital input voltage: 24 V DC (12 to 30 V DC)
- 0 to 10 V DC = logical 0
- 12 to 30 V DC = logical 1
- Max current: 4 mA
- Digital output follows NAMUR (DIN 19234)
- Supply voltage: 5 to 11 V DC
- Below 1.0 mA = logical 0
- Above 2.0 mA = logical 1
- Configurable as normally 0 or normally 1
Mechanical and Environmental
- Case: aluminium, varnished
- Protection: IP65 (NEMA 4X)
- Mounts to linear actuators per DIN/IEC 534 / NAMUR
- Mounts to rotary actuators per VDI/VDE 3845
- Ready for integral mounting
- Cable entry: M20 x 1.5 thread
- Air pipe connection: 1/4-18 NPT thread
Option Modules
- Includes analog position feedback module
- Feedback signal range: 4 to 20 mA
- No optional mechanical kit for digital feedback
- No explosion protection on this model
Installation Guide
- Mount on linear or rotary actuator first.
- Use M20 x 1.5 cable gland for electrical wiring.
- Connect air supply to 1/4-18 NPT port.
- Wire 4-20mA input to two-wire loop.
- Set fail freeze mode during commissioning.
- Keep enclosure sealed for IP65 protection.
Debugging and Maintenance
- Check input current between 3.8 and 25 mA.
- Verify load voltage is above 8.7 V DC at 20mA.
- Use digital input to test logic states.
- Monitor position feedback for loop integrity.
- Inspect air supply pressure regularly.
- Clean external case with soft cloth only.
Compatibility
- Works with ABB and third-party actuators.
- Accepts 4-20mA from any DCS or PLC.
- Digital I/O follows NAMUR standard.
- Fits linear actuators per DIN/IEC 534.
- Fits rotary actuators per VDI/VDE 3845.
Diagnostic Capabilities
- Analog feedback shows actual valve position.
- Digital output indicates fault or limit status.
- Fail freeze mode preserves last position on power loss.
- Split range configurable between 20% and 100%.
Warranty
- 12 months warranty from delivery date.
- Covers manufacturing defects only.
Shipping
- Carriers: FedEx, UPS, DHL.
- Express shipping available worldwide.
- Tracking number provided within 24 hours.
Typical Applications
- Pneumatic valve control in process plants
- Oil and gas flow regulation
- Chemical reactor valve positioning
- Power plant steam valve actuation
- Water treatment diaphragm valve control
Frequently Asked Questions
- What does fail freeze mean?
- The actuator holds its last position.
- This happens when electrical power fails.
- Can I use this positioner without explosion protection?
- Yes, this model has no explosion protection (option 0).
- Use in safe, non-hazardous areas only.
- Positioner does not respond to 4-20mA signal.
- Check loop current above 3.8 mA minimum.
- Verify wiring polarity to two-wire terminals.
- Measure voltage at positioner terminals (min 8.7V).
- What air pipe thread does this use?
- Thread is 1/4-18 NPT for air connection.
- Cable entry uses M20 x 1.5 thread.
- Purchase Guide (Selection Guide)
- Choose V18345-1010551001 for non-hazardous areas.
- Pick this model when double acting fail freeze is required.
- Select analog feedback version for position monitoring.
- Use with linear or rotary actuators.
- Verify air supply pressure between 1.4 and 6 bar.
- For booster function, please ask us for special order.
- Consider intrinsically safe model for hazardous areas.
Ordering Support
- Inquiries: +86 158 8020 0923 (WhatsApp)
- Fast quote and stock check available.
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