Allen-Bradley 1771-OFE1 | PLC 5 Analog Output Module

Product Overview

The Allen-Bradley 1771-OFE1 is an analog output module from the PLC 5 series. It features four individually isolated voltage output channels with a ±10 VDC range. This module installs directly into a 1771 I/O chassis, occupying a single slot. It is engineered for controlling modulating devices such as AC drives, valves, dampers, louvers, and positioners, as well as supplying signals to panel meters, totalizers, and data loggers.

Each channel of 1771-OFE1 provides overload protection, ensuring safe operation under short circuit load conditions. The module supports multiple output voltage ranges, including +1 to +5 VDC, -10 to +10 VDC, and 0 to +10 VDC. Its 12-bit digital-to-analog (DAC) resolution enables precise signal output, with a maximum converter settling time of 0.8 ms for resistive loads.

Technical Specifications

Key Features

• High Precision: 12-bit resolution with DAC settling time of 0.8 ms for fast, accurate outputs.

• Versatile Output Ranges: Supports +1 to +5 VDC, -10 to +10 VDC, and 0 to +10 VDC.

• Individual Channel Isolation: Four channels isolated up to 1000 Volts for safety and reliability.

• Overload Protection: Built-in protection prevents damage under short-circuit conditions.

• Easy Integration: Single-slot installation directly into 1771 I/O chassis.

Applications

• AC Drives & Motors: Control variable frequency drives with precision voltage outputs.

• Control Valves & Dampers: Modulate fluid or air flow in process control systems.

• Industrial Automation Panels: Provide reliable analog signals for panel meters and data acquisition devices.

• Positioning Systems: Connect to actuators, louvers, or positioners for accurate motion control.

FAQ

Q1: Is the 1771-OFE1 brand new and original?
Yes, the 1771-OFE1 is 100% factory original and brand-new.

Q2: Can it operate without external power?
Yes, the module requires no external power and draws only 1.5 mA from the backplane.

Q3: How fast does the module respond to output changes?
The DAC converter has a maximum settling time of 0.8 ms for resistive loads.

Q4: What safety features does it have?
Each channel includes built-in overload protection against short-circuit conditions.

Q5: What chassis is compatible with the 1771-OFE1?
It is compatible with the Allen-Bradley 1771 I/O chassis and mounts directly in a single slot.