Description
Product Name: 1771-OD16K Allen Braley I/O module
Product details:
The 1771-OD16K is a 16-channel, isolated DC output module. It serves as an interface between the PLC-5 processor and field devices such as solenoids, motor starters, and indicators. The “K” suffix indicates a Conformal Coating, which provides an extra layer of protection against harsh environmental factors like moisture, salt spray, and chemical contaminants.
2. Technical Specifications
| Parameter | Specification |
| Module Type | Discrete DC Output (Source/Sinking) |
| Number of Outputs | 16 Channels |
| Operating Voltage Range | 10V to 60V DC |
| Backplane Current (Max) | 400mA @ 5V DC |
| Max. Output Current | 2A per channel (8A max per module) |
| Signal Delay (Off to On) | 1.0 ms |
| Signal Delay (On to Off) | 1.0 ms |
| Power Dissipation | 12.4 Watts (Max) |
| Isolation | 1500V AC (RMS) |
| Wiring Arm | 1771-WN |
3. Key Product Advantages
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Conformal Coating: The “K” version is ideal for “corrosive” or “Class G3” environments, extending the lifespan of the electronics by preventing corrosion on the PCB.
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High Density: 16 outputs in a single slot allows for significant space savings in the I/O chassis.
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Individual Isolation: Offers protection for the PLC backplane against field-side electrical noise and surges.
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Legacy Reliability: Part of the time-tested 1771 platform, known for extreme durability in heavy industries like steel, automotive, and mining.
4. Important Considerations & Precautions
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External Power: This module requires an external DC power supply to drive the output loads.
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Fusing: While the module has internal protection, it is highly recommended to use external fuses for each output to prevent damage from short circuits.
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Heat Dissipation: Due to the high-density nature of the 16 channels, ensure the PLC enclosure has adequate ventilation to prevent overheating.
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Hot Swapping: Use caution when removing or inserting the module while the chassis power is on (RIUP – Removal and Insertion Under Power) to avoid system faults.
5. Typical Applications
The 1771-OD16K is commonly used to drive DC loads in various sectors:
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Solenoid Valves: Controlling pneumatic or hydraulic actuators in assembly lines.
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Indicators & Alarms: Driving 24V/48V DC pilot lights or stack lights.
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Relay Control: Interfacing with high-power interposing relays.
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Harsh Environments: Wastewater treatment plants, chemical processing, and offshore platforms where salt and moisture are present.
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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