Description
ABB PXA45-1015 PLC Expansion Module
The ABB PXA45-1015 is a high-precision I/P (Current-to-Pneumatic) Converter module. It is part of the PXA45 series, widely used in industrial automation to bridge the gap between electronic control systems (PLCs/DCS) and pneumatic actuators or valves.
Product Detailed Description
The PXA45-1015 converts a standard electrical current signal (typically 4–20 mA) into a proportional pneumatic output pressure. It is designed for high-density installations, often used in multi-module rack systems where space and reliability are critical. Unlike standalone field-mounted converters, this module is typically part of a plug-in system for control room or cabinet environments.
Technical Parameters
| Parameter | Specification |
| Input Signal | 4 to 20 mA DC |
| Output Range | 0.2 to 1.0 kgf/cm² (approx. 3 to 15 psi) |
| Accuracy | $\le \pm 0.5\%$ of span |
| Supply Air Pressure | 1.4 kgf/cm² $\pm 0.1$ (approx. 20 psi) |
| Air Consumption | $\le 3$ Normal Liters/Minute (Nl/min) |
| Max Air Capacity | $\ge 40$ Nl/min |
| Operating Temp | -20°C to +60°C |
| Mounting | Plug-in module (Rack or Wall mount files) |
Product Advantages
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High Reliability: Built with a rugged force-balance mechanism that ensures stable performance even in environments with slight vibrations.
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Compact Design: The “plug-in” module format allows for high-density installation, saving significant cabinet space compared to traditional field converters.
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Easy Maintenance: Features a hot-swappable design. When a module is removed from the rack, the pneumatic connections automatically seal, preventing air leaks and allowing replacement without shutting down the entire air supply.
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Linearity & Precision: Provides an extremely linear relationship between the mA input and psi output, ensuring precise control over final elements like valves.
Important Considerations (Precautions)
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Air Quality: The supply air must be clean, dry, and oil-free (instrument-grade air). Contaminants or moisture can clog the internal nozzle-flapper mechanism.
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Calibration: While factory-calibrated, it is recommended to check the Zero and Span settings during commissioning to account for the specific mounting orientation and tubing lengths.
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Reverse Polarity: Ensure the electrical input is wired correctly; reverse polarity will result in no output pressure and potential damage to the electronic components.
Product Applications
The PXA45-1015 is primarily used in industries requiring precise fluid or gas control:
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Chemical & Petrochemical: Controlling large-scale pneumatic control valves in processing plants.
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Power Plants: Regulating steam or water flow via pneumatic actuators.
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Pulp & Paper: Managing pressure and flow in paper machine control systems.
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General Manufacturing: Used in control cabinets to interface electronic controllers with legacy pneumatic machinery.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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