825-PIOD Allen-Bradley

825-PIOD Allen-Bradley Power Board

Brand：Allen-Bradley Model number：825-PIOD

Country of origin: United States Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

The 825-PIOD is an optional expansion module that integrates seamlessly with the 825-P motor protection relay. It is designed to enhance the versatility of the motor management system by allowing the relay to interact with more field devices, such as start/stop switches, external trip signals, or status indicators. The module communicates with the main protection base unit via a dedicated internal bus. It is housed in a compact, industrially hardened enclosure that matches the footprint of the 825-P series, ensuring a unified and professional look within the motor control center (MCC) or control cabinet.

Product Parameters

Module Type: Digital Input and Output Expansion.
Compatibility: Exclusively for use with the Bulletin 825-P Modular Protection System.
Digital Inputs: Typically provides 4 or more inputs (depending on configuration) for dry contacts or specific voltage levels ( $24 \text{ VDC}$ or $120 \text{ VAC}$ versions are common).
Relay Outputs: Includes multiple programmable relay outputs, often rated for $5 \text{ A}$ continuous at $240 \text{ VAC}$ or $30 \text{ VDC}$ .
Isolation: Rated for high dielectric strength to protect the main processor from field-side electrical surges.
Power Supply: Draws power directly from the 825-P base unit through the side-connector interface.
Operating Temperature: $-20\text{°C}$ to $60\text{°C}$ ( $-4\text{°F}$ to $140\text{°F}$ ).
Regulatory Compliance: UL listed, CSA certified, and CE marked for global industrial use.

Product Advantages

One of the primary advantages of the 825-PIOD is its Modular Scalability. Instead of forcing users to buy a large, expensive controller for a simple application, Allen-Bradley allows for the addition of this module only when extra I/O is needed. The Programmable Logic Integration is another key benefit; the inputs and outputs on the 825-PIOD can be mapped to specific motor protection events, such as using an input to trigger a "Remote Trip" or an output to signal a "High Bearing Temperature" alarm.

Furthermore, the Reduced Wiring Complexity is significant. By using the module's localized terminals for control interlocks, users can reduce the amount of wiring that needs to be routed back to a central PLC. The Industrial Durability ensures that the relay contacts and input circuitry can handle the high-vibration and electrically noisy environments typically found near large motor starters and variable frequency drives.

Important Considerations and Precautions

When installing the 825-PIOD, it is essential to ensure that the Side-Connector Pins are perfectly aligned before snapping the module onto the base unit; forcing the connection can bend the pins and cause permanent communication failure. Voltage Matching is critical for the digital inputs; ensure the field voltage (e.g., $120 \text{ VAC}$ ) matches the specific version of the 825-PIOD being used, as applying high voltage to a low-voltage input module will destroy the circuitry.

Regarding the relay outputs, always verify the Inductive Load Ratings. When switching solenoids or large contactor coils, it is highly recommended to use external surge suppression (such as an RC snubber) to prevent contact pitting and extend the life of the relay. Finally, because the 825-P system is a protection device, any changes to the I/O configuration in the software must be followed by a Functional Test to verify that the motor still trips or starts as intended under the new logic.

Product Applications

The 825-PIOD is found in heavy industrial applications where large motors require more than just basic overcurrent protection.

Pumping Stations: Using digital inputs to monitor flow switches or pressure transducers and using outputs to control auxiliary cooling fans.
Conveyor Systems: Interfacing with pull-cord safety switches or belt-alignment sensors to trigger controlled stops via the 825-P protection logic.
Mining and Material Handling: Managing the complex start-up sequences of large crushers or mills that require feedback from multiple lubrication and cooling subsystems.
Oil and Gas: Providing status feedback of motor-operated valves (MOV) back to a central control room through the 825-P's communication network.
HVAC Systems: Controlling dampers and monitoring filter differential pressure switches in large industrial air handling units.

1794-OE8H/B Allen-Bradley

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！

Allen-Bradley 440G-TZS21UPRH

Allen-Bradley 700-HLS1U2

Allen-Bradley 1440-SDM02-01RA

Allen-Bradley 1492-IFM40F-3

Allen-Bradley 1746-A10

Allen-Bradley 1746-NI4

Allen-Bradley 1746-NI8

Allen-Bradley 1747-L541

Allen-Bradley 1747-L552

Allen-Bradley 1756-A4

Allen-Bradley 1756-A10

Allen-Bradley 1756-A13