1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
    1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
    1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated
1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated

1771-OFE1 | Allen-Bradley PLC-5 Analog Output Module, 4-Channel Isolated

Part #: 1771-OFE1 Manufactured by: Allen-Bradley
Regular price
$509.52
Sale price
$509.52
Regular price
3 in Stock
Condition: New – Open box
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Product Overview
The Allen-Bradley 1771-OFE1 is a PLC-5 Analog Voltage Output Module, offering four 4-point ±10VDC output channels. Ideal ...  Read more
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Product Description P/N: 1771-OFE1

Description / Specifications

Description

The Allen-Bradley 1771-OFE1 is a four-channel isolated analog output module for the PLC-5 platform, providing selectable voltage ranges of ±10 VDC, 0–10 VDC, and +1 to +5 VDC. It delivers precise 12-bit signal generation for process, motion, and data acquisition applications requiring stable and accurate analog control.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Industrial Automation
Part Number 1771-OFE1
Subcategory Analog Output Modules
Series PLC-5 / 1771 I/O
Module Type Isolated Analog Output Module
Number of Channels 4 isolated differential outputs (1000 V isolation)
Output Signal Ranges ±10 VDC; 0–10 VDC; +1 to +5 VDC
Resolution 12 bits
Accuracy ±0.1% full scale; ±½ LSB (binary), ±½ LSD (BCD)
Data Format Natural Binary or BCD (±9999 scaling)
Converter Settling Time 0.8 ms
Channel Update Time 1.6 ms (binary), 8 ms (BCD)
Internal Scan Rate 8 ms
Backplane Current 1.5 A at 5 VDC
External Power Required None
Power Dissipation 7.9 W
Thermal Dissipation 26.9 BTU/hr
Signal Delay (Off) 45 ± 15 ms (AC), 50 ms (DC)
Operating Temperature 0–60 °C (32–140 °F)
Wiring Arm 1771-WC
Standards C-TICK, CE, CSA, Marine, UL
Applications General-purpose analog control, actuators, valves, recorders
Weight 1.9 lb

  

 

Information About 1771-OFE1

The 1771-OFE1 is part of the Allen-Bradley 1771 Universal I/O family, designed to provide reliable and accurate analog voltage output for PLC-5 controllers. Each of its four channels is individually isolated, ensuring noise immunity and preventing cross-channel interference in demanding process environments. The module converts digital values—either in binary or BCD format—into precise voltage signals suitable for actuators, position controllers, indicators, and data acquisition devices. With no external power supply required, it draws all operating power from the I/O chassis backplane while performing continuous diagnostics, including startup self-checks and fault detection. Its fast response times and 12-bit resolution make it well suited for high-precision industrial automation tasks.

Key Features:

  • Four Isolated Channels: Provides 4 individually isolated analog voltage outputs for high-noise industrial environments.
  • Selectable Voltage Ranges: Supports ±10 VDC, 0–10 VDC, and +1 to +5 VDC output options for diverse control requirements.
  • 12-Bit Conversion Accuracy: Ensures precise analog signal generation with ±0.1% full-scale accuracy for sensitive process control.
  • Fast Response Performance: Delivers 0.8 ms settling time and rapid update capability (1.6 ms binary / 8 ms BCD).
  • Backplane-Powered Operation: Requires no external power supply, drawing 1.5 A at 5 VDC from the PLC-5 chassis.
  • Diagnostic Protection: Includes startup self-tests, overload protection, and fault LEDs for troubleshooting and system safety.
  • PLC-5 Compatibility: Designed for use in 1771 I/O chassis and supports block transfer instructions for configuration and data exchange.
  • Robust Industrial Build: Rated for 0–60 °C operation with compliance to multiple global standards for heavy-duty environments.

The 1771-OFE1 delivers the reliability and precision required for advanced process control, motion systems, and high-accuracy analog output applications in PLC-5 industrial automation.

Frequently Asked Questions about 1771-OFE1
Question: What is the 1771-OFE1 used for?
Date Update:23/05/2025
Answer:

The 1771-OFE1 is an analog output module in the Allen-Bradley 1771 I/O series, designed for use with PLC-5 systems. It provides single-channel analog voltage or current output, typically used to control analog devices such as variable frequency drives (VFDs), valves, or actuators.

Question: What system is this module compatible with?
Date Update:23/05/2025
Answer:

The 1771-OFE1 is compatible with PLC-5 processors and must be installed in a 1771 I/O chassis. It is not natively compatible with newer systems like CompactLogix or ControlLogix unless third-party adapters are used.

Question: What is the resolution of the analog signal?
Date Update:23/05/2025
Answer:

The 1771-OFE1 offers 12-bit resolution, which means the output signal is divided into 4096 discrete steps. This provides adequate precision for many industrial control applications.

Question: Is the 1771-OFE1 still available or supported, and what is the recommended replacement?
Date Update:23/05/2025
Answer:

The 1771-OFE1 is a discontinued product, as Rockwell Automation has phased out the entire 1771 I/O series. While it may still be available through surplus suppliers or third-party vendors, it is no longer officially supported for new installations. For upgrades or new systems, Rockwell recommends migrating to the ControlLogix platform, using modern analog output modules such as the 1756-OF8 or 1756-OF6VI, which offer improved performance, diagnostics, and long-term support.

Question: Is the 1771-OFE1 hot-swappable?
Date Update:23/05/2025
Answer:

No. Like all 1771 series modules, the 1771-OFE1 is not hot-swappable. Power must be removed from the chassis before inserting or removing the module to avoid damage or safety issues.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description

The Allen-Bradley 1771-OFE1 is a four-channel isolated analog output module for the PLC-5 platform, providing selectable voltage ranges of ±10 VDC, 0–10 VDC, and +1 to +5 VDC. It delivers precise 12-bit signal generation for process, motion, and data acquisition applications requiring stable and accurate analog control.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Industrial Automation
Part Number 1771-OFE1
Subcategory Analog Output Modules
Series PLC-5 / 1771 I/O
Module Type Isolated Analog Output Module
Number of Channels 4 isolated differential outputs (1000 V isolation)
Output Signal Ranges ±10 VDC; 0–10 VDC; +1 to +5 VDC
Resolution 12 bits
Accuracy ±0.1% full scale; ±½ LSB (binary), ±½ LSD (BCD)
Data Format Natural Binary or BCD (±9999 scaling)
Converter Settling Time 0.8 ms
Channel Update Time 1.6 ms (binary), 8 ms (BCD)
Internal Scan Rate 8 ms
Backplane Current 1.5 A at 5 VDC
External Power Required None
Power Dissipation 7.9 W
Thermal Dissipation 26.9 BTU/hr
Signal Delay (Off) 45 ± 15 ms (AC), 50 ms (DC)
Operating Temperature 0–60 °C (32–140 °F)
Wiring Arm 1771-WC
Standards C-TICK, CE, CSA, Marine, UL
Applications General-purpose analog control, actuators, valves, recorders
Weight 1.9 lb

  

 

Information About 1771-OFE1

The 1771-OFE1 is part of the Allen-Bradley 1771 Universal I/O family, designed to provide reliable and accurate analog voltage output for PLC-5 controllers. Each of its four channels is individually isolated, ensuring noise immunity and preventing cross-channel interference in demanding process environments. The module converts digital values—either in binary or BCD format—into precise voltage signals suitable for actuators, position controllers, indicators, and data acquisition devices. With no external power supply required, it draws all operating power from the I/O chassis backplane while performing continuous diagnostics, including startup self-checks and fault detection. Its fast response times and 12-bit resolution make it well suited for high-precision industrial automation tasks.

Key Features:

  • Four Isolated Channels: Provides 4 individually isolated analog voltage outputs for high-noise industrial environments.
  • Selectable Voltage Ranges: Supports ±10 VDC, 0–10 VDC, and +1 to +5 VDC output options for diverse control requirements.
  • 12-Bit Conversion Accuracy: Ensures precise analog signal generation with ±0.1% full-scale accuracy for sensitive process control.
  • Fast Response Performance: Delivers 0.8 ms settling time and rapid update capability (1.6 ms binary / 8 ms BCD).
  • Backplane-Powered Operation: Requires no external power supply, drawing 1.5 A at 5 VDC from the PLC-5 chassis.
  • Diagnostic Protection: Includes startup self-tests, overload protection, and fault LEDs for troubleshooting and system safety.
  • PLC-5 Compatibility: Designed for use in 1771 I/O chassis and supports block transfer instructions for configuration and data exchange.
  • Robust Industrial Build: Rated for 0–60 °C operation with compliance to multiple global standards for heavy-duty environments.

The 1771-OFE1 delivers the reliability and precision required for advanced process control, motion systems, and high-accuracy analog output applications in PLC-5 industrial automation.

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