Product Overview
The ABB V18345-1010551001 is a TZIDC-120 intelligent valve positioner designed for precise control of linear and rotary actuators. This industrial automation module features a rugged aluminum case with IP65 (NEMA 4X) protection, making it suitable for demanding process environments. With a 4-20 mA two-wire input and double-acting fail-freeze output, it ensures reliable operation even during power loss.
Key Features & Benefits
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Precise Input Signal: Accepts 4-20 mA nominal range with split-range configuration between 20% and 100%, providing flexibility for various control schemes.
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Robust Construction: Varnished aluminum case rated IP65 (NEMA 4X) protects against dust and water ingress, ideal for harsh industrial settings.
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Fail-Safe Operation: Double-acting fail-freeze output locks the actuator position during electrical power failure, preventing unwanted movement.
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Analog Feedback: Includes plug-in module for analog position feedback (4-20 mA), enabling remote monitoring and diagnostics.
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Versatile Mounting: Compatible with linear actuators per DIN/IEC 534/NAMUR and rotary actuators per VDI/VDE 3845, with integral mounting option.
Technical Specifications
| Parameter |
Value |
| Input Signal |
4-20 mA (two-wire), max 25 mA / 30 V |
| Minimum Input Current |
3.4 mA (without analog feedback), 3.5 mA (with analog feedback) |
| Load Voltage at 20 mA |
8.7 V DC (without explosion protection), 9.7 V DC (intrinsically safe) |
| Impedance at 20 mA |
435 ohms (without explosion protection), 485 ohms (intrinsically safe) |
| Digital Input |
24 V DC (12-30 V DC), logical 0: 0-10 V DC, logical 1: 12-30 V DC, max 4 mA |
| Digital Output (NAMUR) |
Supply 5-11 V DC, logical 0: <1.0 mA, logical 1: >2.0 mA |
| Output Range |
0-6 bar (0-90 psi) |
| Air Capacity at 1.4 bar |
5.0 kg/h = 3.9 Nm³/h = 2.3 scfm |
| Air Capacity at 6 bar |
13 kg/h = 10 Nm³/h = 6.0 scfm (booster on request) |
| Connections |
Cable: M20 x 1.5 thread; Air pipe: 1/4-18 NPT |
| Enclosure Protection |
IP65 (NEMA 4X) |
Industry Applications
The ABB V18345-1010551001 is widely used in process industries such as oil and gas, chemical, power generation, and water treatment. It excels in applications requiring precise valve positioning, such as flow control, pressure regulation, and temperature management. Its fail-freeze feature is particularly valuable in safety-critical processes where actuator position must be maintained during power interruptions. The analog feedback module enables integration with DCS or PLC systems for continuous position monitoring and predictive maintenance.
Installation & Setup
Mount the ABB V18345-1010551001 directly onto linear or rotary actuators using the appropriate bracket per DIN/IEC 534/NAMUR or VDI/VDE 3845. Ensure the air supply is clean and dry, with pressure within the specified range (0-6 bar). Connect the 4-20 mA control signal to the input terminals, and wire the analog feedback output to your control system. For digital input/output, follow the NAMUR wiring standards. After installation, perform a zero and span calibration using the local interface or HART communicator to ensure accurate positioning.
Maintenance & Reliability
Regular maintenance of the ABB V18345-1010551001 ensures long-term reliability. Inspect the air connections for leaks, check the cable gland for tightness, and clean the exterior with a mild detergent. Periodically verify the calibration and adjust if drift is observed. The aluminum case protects internal components, but avoid exposure to corrosive chemicals that could damage the finish. With proper care, this positioner delivers consistent performance, reducing downtime and maintenance costs.
Selection Guide
When selecting the ABB V18345-1010551001, confirm your actuator type (linear or rotary) and mounting requirements. Verify the input signal compatibility with your control system (4-20 mA). If you need explosion protection, note that this model is without (option 0). For analog feedback, the module is included. Ensure the air supply pressure meets your actuator requirements. For competitive pricing and reliable delivery, consider purchasing from PLC Source PRO, a trusted supplier of industrial automation parts.