The Allen-Bradley 1771-OFE1 /A Analog Output Module is a versatile component designed to enhance industrial automation systems by providing precise voltage outputs.
Key Features
- Four Individually Isolated Outputs: Ensures reliable and independent operation across all channels.
- 12-Bit Resolution: Delivers high-accuracy analog signal generation, supporting detailed process control.
- Selectable Voltage Ranges: Offers flexibility with output ranges of 1 to 5 V DC, 0 to 10 V DC, and -10 to +10 V DC, configurable via internal jumpers.
- Efficient Integration: Occupies a single slot in the 1771 I/O chassis and draws power directly from the backplane, eliminating the need for external power sources.
- Rapid Response: Features a channel update time of 8 ms for BCD data and 1.6 ms for binary data, facilitating swift system reactions.
Technical Specifications
- Output Channels: 4 individually isolated differential outputs.
- Output Voltage Ranges: 1 to 5 V DC, 0 to 10 V DC, -10 to +10 V DC.
- Maximum Output Current: 10 mA per channel.
- Digital Resolution: 12-bit binary, equating to 1 part in 4095.
- Power Requirements: 1.5 A at 5 V DC, supplied via the I/O chassis backplane.
- Power Dissipation: 7.9 W.
- Thermal Dissipation: 26.9 BTU/hr.
- Isolation: 1000 V ms between output channels, tested at 1500 V for 1 second.
- Operating Temperature: -40 to 80 °C (-40 to 176 °F).
- Storage Temperature: -40 to 85 °C (-40 to 185 °F).
Installation and Configuration
The 1771-OFE1 module is designed for seamless integration into Allen-Bradley PLC-5 systems. It can be installed in any slot of the 1771 I/O chassis, except the leftmost slot reserved for the Remote I/O Adapter Module. To minimize electrical noise interference, it’s advisable to position analog input modules away from AC or high-voltage DC modules. Module keying ensures correct installation by aligning keying bands between 10-12 and 26-28 on the I/O chassis backplane connector. The module’s output ranges are selectable via internal configuration jumpers, allowing customization to specific application requirements.
Applications
This module is ideal for applications requiring precise analog voltage outputs, such as controlling valve positioners, motor speed controllers, signal converters, and recorders. Its high resolution and flexible voltage range selection make it suitable for diverse industrial automation tasks.
In summary, the Allen-Bradley 1771-OFE1 /A Analog Output Module offers a reliable and efficient solution for generating accurate analog voltage signals in complex automation systems. Its combination of high-resolution outputs, flexible configuration options, and robust design ensures optimal performance in various industrial environments.
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