Allen Bradley 1771-OFE2 B Analog Output Module

The Allen-Bradley 1771-OFE2/B Analog Output Module is a versatile component designed to provide precise analog control within industrial automation systems.

Key Features

• Output Channels: Equipped with four independently isolated analog output channels, each capable of delivering a 4-20 mA current signal.
• Resolution: Offers a 12-bit digital resolution, ensuring accurate signal representation.
• Backplane Requirements: Consumes 1.4 Amps at 5 VDC from the backplane, eliminating the need for an external power supply.
• Compatibility: Designed for integration into any 1771 I/O chassis, making it suitable for both local and remote I/O configurations within PLC-5 systems.
• Isolation: Each channel features 1000-volt independent isolation, enhancing system safety and reliability.

Applications

The 1771-OFE2/B module is ideal for controlling various final control elements such as variable frequency drives (VFDs), dampers, shutters, and valves. It can also transmit signals to measuring and recording instruments like signal isolators, converters, panel meters, and data loggers. Additionally, it supports the output of proportional-integral-derivative (PID) controllers, facilitating automatic control of analog loops.

Installation and Wiring

This module occupies a single slot in the 1771 I/O chassis and utilizes the 1771-WC field wiring arm for connections. For optimal performance, it is recommended to use No. 12 stranded or solid wire with an insulation thickness of 3/64 inch (1.2 mm). Belden 8761 cable is suggested for wiring. During installation, ensure that the module keying settings are configured between pins 10 and 12, and 26 and 28. The wiring arm screws should be tightened to a torque of 7-9 inch-pounds.

Technical Specifications

• Power Dissipation: 1.6 Watts
• Operating Temperature: 0 to 60 degrees Celsius
• Storage Temperature: -40 to 85 degrees Celsius
• Module Width: Single slot
• Data Format: Natural Binary or BCD scaling to +/- 9999
• Voltage Range: N/A
• Current Range: 4-20 mA
• External Power: None required
• Indicators: 2 LEDs

The Allen-Bradley 1771-OFE2/B Analog Output Module stands as a reliable solution for precise analog control in diverse industrial applications, ensuring seamless integration and optimal performance.