The Allen-Bradley (A-B) 1771-OFE2 is a 4-channel analog output module designed for use with the PLC-5 programmable logic controller (PLC) system from Rockwell Automation [multiple sources]. It allows you to convert digital signals from the PLC into analog voltage signals to control various industrial devices.
Here’s a breakdown of its key functionalities and specifications:
Function:
- The 1771-OFE2 receives digital data (often binary or 4-digit BCD values) from the PLC program [main input].
- It then converts this digital data into proportional analog voltage signals on its four output channels [main function].
- These analog voltage signals can then be used to control various analog devices in your automation system, such as:
- Valve positioners for regulating flow rates [common application]
- Motor speed controllers for adjusting motor speeds [common application]
- Signal converters for scaling or transforming signals [possible application]
- Recorders for data logging purposes [possible application]
Key Features (based on available information):
- Number of Channels: 4 independent output channels, allowing control of multiple devices simultaneously [important feature].
- Output Voltage Range: Likely offers a selectable voltage range (e.g., 0-5 VDC or 1-10 VDC) to suit different application requirements [common feature].
- Resolution: This refers to the smallest change in the output voltage that the module can generate. Higher resolution provides more precise control over analog devices [important specification].
- Data Format: Configurable for binary or BCD (Binary Coded Decimal) data input from the PLC [common data formats for analog output modules].
Finding More Information:
- Rockwell Automation Website: Allen-Bradley is a Rockwell Automation brand. You can find information about the 1771-OFE2 module, including user manuals and datasheets, on the Rockwell Automation website:
- Search for “1771-OFE2” on Rockwell Automation: [link 1771 ofe2 ON Rockwell Automation [invalid URL removed]] (This might lead to a product page or a user manual)
Additional Considerations:
- Compatibility: Ensure the 1771-OFE2 is compatible with your specific PLC-5 model.
- Output Voltage Requirements: The selected voltage range should match the voltage requirements of the devices you intend to control.
- Programming: The PLC program needs to be configured to send appropriate digital data to the module for desired analog voltage outputs.
I hope this explanation clarifies the function of the A-B 1771-OFE2 and helps you find the necessary information for your project!
