Description
Product Name: 1794-OB16PXT Allen Braley Input module
Product details:
The 1794-OB16PXT is a component of the Allen-Bradley FLEX I/O-XT™ system. The “XT” (eXtreme Temperature) designation indicates that this module is built to operate in more demanding environments than standard FLEX I/O modules, often featuring conformal coating for enhanced protection against corrosive environments, moisture, and extreme temperatures.
⚙️ Product Parameters (Specifications)
| Feature | Specification |
| Product Family | FLEX I/O XT |
| Type | Discrete DC Output Module |
| Outputs | 16 Points |
| Voltage | 24V DC (Nominal) |
| Output Type | Sourcing (PNP) |
| Protection | Electronically Protected |
| Operating Temperature | Extended Range: -20 to 70 °C (-4 to 158 °F) |
| Mounting | DIN Rail Mount (requires a terminal base) |
| Enclosure Rating | IP20 (Open Style) |
| Special Features | Conformally Coated for harsh environments |
✨ Product Advantages (Key Benefits)
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Extended Temperature Range: The key benefit is its ability to operate reliably in an extended temperature range of $-20$ to $70^\circ\text{C}$, making it suitable for environments where standard I/O would fail.
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Harsh Environment Ready (Conformal Coating): The conformal coating provides robust protection against moisture, humidity, and noxious gases (e.g., meeting ISA/ANSI-71.040-1985 Class G3 Environment requirements), which is critical in chemical plants, refineries, and mining operations.
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High Density: Provides 16 output points in a compact FLEX I/O form factor, saving panel space.
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Electronically Protected Outputs: Built-in electronic protection helps prevent damage to the module and field devices from overcurrent conditions.
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Modular and Flexible: As part of the FLEX I/O platform, it offers extreme flexibility. It connects to various networks (EtherNet/IP, ControlNet, DeviceNet, etc.) via a common adapter and uses separate terminal bases for easy wiring and module replacement without disconnecting field wiring.
⚠️ Important Considerations (Notes)
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Terminal Base Required: The I/O module plugs into a separate terminal base (e.g., 1794-TB3, 1794-TB3T, or similar) which handles the field wiring terminations. The terminal base must be ordered separately.
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System Compatibility: Must be used with a FLEX I/O Adapter (e.g., 1794-AENT) to communicate with a controller (PLC/PAC).
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Power Supply: Requires a 24V DC power supply for the field devices and the module itself (often supplied by the adapter’s backplane power, which is generated from the 24V DC bus).
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Sourcing Output: This module provides a Sourcing (PNP) output, meaning it switches the positive voltage (sourcing current) to the load. Ensure the field devices (solenoids, relays, indicator lights) are compatible with this wiring type.
🛠️ Product Applications (Typical Uses)
The 1794-OB16PXT is ideal for distributed control applications requiring reliable I/O in non-climate-controlled or challenging industrial settings:
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Oil & Gas: Control of pumps, valves, and monitoring systems in remote outdoor wellheads or processing facilities exposed to wide temperature swings.
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Mining & Heavy Industry: Applications where equipment is subjected to dust, high humidity, and vibration.
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Chemical/Petrochemical Processing: Control in areas where corrosive gases are present, making the conformal coating essential.
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Food and Beverage: Certain process areas that involve regular washdowns or extreme temperatures.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
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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