Allen-Bradley 1769-OF8C
Allen-Bradley 1769-OF8C
Allen-Bradley 1769-OF8C
Allen-Bradley 1769-OF8C
Allen-Bradley 1769-OF8C
Allen-Bradley 1769-OF8C
Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail sales1@apterpower.com
  • Lifecycle status

    Active / Available from OEM
    Apter Power maintains reliable stocks of this Allen-Bradley output card, offering a steady supply chain to protect your factory from sudden expansion or replacement delays.

1769-OF8C

/ 4.9
1001 reviews | Need a Specific Revision?
The Allen‑Bradley 1769‑OF8C is a Compact I/O™ 8‑channel single‑ended analog current output module. It provides 0…20mA or 4…20mA output signals with 16‑bit resolution for precision control of valves, VFDs, and actuators in CompactLogix™ and MicroLogix™ 1500 systems.
In Stock
Ships by Thursday, October 29
Fast Shipping Available
Get a quick price for 1769-OF8C
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for 1769-OF8C

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1769-OF8C
  • Product Family:
    CompactLogix
  • Product Type:
    8-Channel 4-20mA Analog Current Output Module
  • Stock:
    1
  • Output Signal (Normal Range):
    0…20 mA, 4…20 mA
  • Output Signal (Full Scale Range):
    0…21 mA, 3.2…21 mA
  • Overall Accuracy (at 25°C):
    ±0.35% full scale
  • Conversion Rate (all channels max.):
    5 ms
  • Step Response to 63%:
    <2.9 ms
  • Resistive Load on Current Output:
    0…500 Ω (includes wire resistance)
  • Max. Inductive Load:
    0.1 mH
  • Operating Temperature:
    0…60 °C (32…140 °F)
  • Storage Temperature:
    -40…85 °C (-40…185 °F)
  • Operating Humidity:
    5…95% non-condensing
  • Weight:
    0.18 kg
  • Estimated shipping dimensions:
    13.1x8.2x3.9cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Safety & Compliance Monitoring & Control Applications

Features:

  • High-Density 16-Bit Precision Current Output
  • Flexible External Power Supply Selection and Diagnostic Capabilities
  • Removable Terminal Block and Hazardous Environment Certification
The Allen-Bradley 1769-OF8C integrates eight analog current output channels within a single module width, employing 16-bit digital-to-analog conversion technology to achieve an effective resolution of 15.59 bits (0.323μA/bit) in the 4-20mA range. This module offers two standard output ranges: 0-20mA and 4-20mA, with an overall accuracy of ±0.35% of full scale at 25°C, meeting the stringent requirements for fine-tuning continuous current signals in process control.

The Allen-Bradley 1769-OF8C supports selection via internal DIP switches for backplane bus power supply or independent external NEC Class 2 24V DC power supply, enhancing field wiring flexibility. The module features comprehensive diagnostic functions including open-circuit detection, out-of-range/under-range reporting, and short-circuit protection. The output circuit status can be monitored in real-time via status bits, facilitating rapid troubleshooting in the field.

The Allen-Bradley 1769-OF8C is equipped with a removable terminal block (RTB), supporting "power off without disconnecting wires" maintenance, greatly simplifying the module replacement process. The module is certified for Class I Division 2 Groups A, B, C, and D hazardous environments, with temperature code T4A and an operating temperature range of 0-60℃, making it suitable for industrial environments such as petroleum and chemical plants where flammable and explosive gases may be present.

The 1769-OF8C Allen-Bradley8-Channel 4-20mA Analog Current Output Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1769-OF8C 8-Channel 4-20mA Analog Current Output Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1769-OF8C 8-Channel 4-20mA Analog Current Output Module

General

  • Manufacturer Allen-Bradley
  • Model 1769-OF8C
  • Condition New Original ready stock
  • Product Family 1769-IF4, 1769-IF8, 1769-OF2
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Hazardous Environment Certification: Certified by Class I Division 2 Groups A, B, C, D, temperature code T4A, suitable for industrial environments with flammable gases or vapors.
  • Electrical Isolation: Provides 500V AC/710V DC 1-minute isolation test between output groups and the backplane bus, protecting sensitive backplane logic from external surges.
  • Overcurrent and Short Circuit Protection: Output channels have short-circuit and overcurrent protection functions, with a maximum short-circuit current limited to 21mA.
  • International Certification Compliance: Complies with CE, UKCA, and c-UL-us certification standards, meeting the safety requirements of industrial control equipment in North America and Europe.
  • Open Circuit/Load Fault Detection: Reports open circuit or excessive load resistance faults in the output circuit via status bits, facilitating rapid on-site problem location. Out-of-Range/Under-Range Alarm: The module triggers an alarm bit when the output value exceeds the normal operating range, automatically resetting upon returning to normal.
  • Real-Time Output Data Control: The controller directly writes integer values ​​to each channel via the output data file; the module switches between all channels at a 5ms rate.
  • External Power Supply Monitoring: A flashing status LED on the module indicates an external 24V power supply fault; the input data file contains the external power supply status bit.
  • Petroleum & Chemical Industry: Using safety barriers to drive current-type actuators, achieving precise closed-loop PID control of reactor temperature and pipeline pressure.
  • Water Treatment & Environmental Protection: Controlling the frequency converter of the dosing pump to adjust the flocculant dosage and regulating the opening of the outlet valve to achieve constant pressure water supply.
  • Manufacturing & Automotive Industry: Controlling the pressure of robotic welding torches, frequency conversion speed regulation of conveyor belts, and proportional valve positioning in painting lines within automated production lines.
Description
The Allen-Bradley 1769-OF8C integrates eight analog current output channels within a compact 35mm wide chassis, employing a single-ended output structure. The analog common terminal (ANLG COM) of all channels is internally connected. The module supports two standard output ranges: 0…20mA and 4…20mA, expandable to full-scale ranges of 0…21mA and 3.2…21mA, meeting diverse industrial control needs. The module provides 16-bit digital-to-analog conversion resolution, achieving 15.59 effective bits (0.323μA/bit) in the 4-20mA range, ensuring smooth control of precision equipment such as control valves and frequency converters.

Allen-Bradley 1769-OF8C offers flexible power configuration options, allowing selection via internal DIP switches between backplane bus power (consuming 24V DC 185mA) and external NEC Class 2 24V DC power (20.4-26.4V DC, minimum 60mA). The module has a slew rate of 5ms (all channels) and a step response time of less than 2.9ms (63% full scale). Overall accuracy is ±0.35% full scale at 25℃ and requires no on-site calibration.

Allen-Bradley 1769-OF8C features a removable terminal block (RTB) design, supporting "power-off without disconnection" maintenance, significantly reducing fault replacement and system recovery time. The module's front panel is equipped with a single status LED indicator to display the module's operating status. Output channels have open-circuit detection, short-circuit protection, and overcurrent protection, with a load resistance range of 0-500Ω (including cable resistance). This module is Class I Division 2 Groups A, B, C, and D hazardous environment certified and complies with CE, c-UL-us, and UKCA standards.
Revisions

Revision Part #

Also known as

1769-OF8C Ser A
1769-OF8C/A, Series A, Rev A
Alternative Names
1769-0F8C 1769-OFBC 17690F8C 1769OF8C 1769OFBC I769-0FBC I769-OF8C I7690FBC I769OF8C
Technical notes
Allen-Bradley 1769-OF8C Technical Highlights: 8 single-ended current output channels, 16-bit resolution, accuracy ±0.35% of full scale, slew rate 5ms; supports 0-20mA/4-20mA output, load capacity 0-500Ω; bus power consumption 145mA@5V DC/185mA@24V DC, optional external 24V Class 2 power supply; non-isolated between channels, 500V AC isolation between output group and bus.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What are the main applications of the Allen-Bradley 1769-OF8C?
The Allen-Bradley 1769-OF8C is mainly used for the final control element (FCE) in drive control loops. Typical applications include: controlling frequency converters (VFDs) to achieve motor speed regulation, regulating proportional control valves/positioners, driving current-type servo actuators, and transmitting standard 4-20mA signals to receiving devices such as panel instruments, data loggers, and signal distributors.
How does the Allen-Bradley 1769-OF8C determine the module's operating status?
TheAllen-Bradley 1769-OF8C front panel is equipped with a single status LED indicator. This indicator is solid green when the module is operating normally. According to the user manual, a flashing indicator usually indicates an external 24V power supply failure. When the module detects an open circuit or excessively high load resistance, it will report via a status bit instead of an LED indication.
Are the channels of the Allen-Bradley 1769-OF8C isolated?
No. The Allen-Bradley 1769-OF8C's eight output channels use a single-ended architecture. All channels' analog common terminal (ANLG COM) is internally connected, and there is no isolation between channels. Isolation only exists between the output group and the backplane bus, with a test rating of 500V AC/710V DC for 1 minute.
Why is the Allen-Bradley 1769-OF8C unable to output signals correctly?
Please check the following in order: 1) Check the position of the power selection switch inside the module—when switched to the bottom, an external 24V DC power supply is required; 2) Confirm that the output circuit load impedance is within the range of 0-500Ω (including cable resistance). Exceeding this range will cause output abnormalities; 3) Confirm that the external power supply voltage is within the range of 20.4-26.4V DC and meets NEC Class 2 requirements; 4) Check for open circuits or wiring faults in the output circuit.