Product Description
The Allen-Bradley 1746-NO4I is a four-channel, 0-20 mA analog output module for SLC 500 PLCs, compatible with both fixed and modular hardware styles. It drives modulating devices, acting as a PID controller's Control Output or a manual loading station's command, and can re-transmit signals for indication, data logging, or conversion. Its properties are configurable, and it features a switch for selecting internal (backplane) or external (24VDC 10%, 195mA max) power. Specifications include a 16-bit 2s complement format, 55mA/5VDC and 195mA/24VDC backplane current draw, 5% over-range capacity, 500VDC backplane isolation, 512s update time, 2.5ms step response, 0-60C operating temperature, and +/- 70 ppm/C full-scale accuracy drift. It requires shielded cable (e.g., Belden 8761), supports a 0-500 ohm load, and uses a removable terminal block for easy wiring within a 1746 chassis.
Is Your Device Showing These Signs?
The Allen Bradley 1746-NO4I analog output module commonly experiences issues such as output signal drift, calibration errors requiring potentiometer adjustments, and failure to produce the correct voltage or current range due to component degradation. Troubleshooting often reveals problems with the power supply impacting signal integrity, or wiring faults causing short circuits and open circuits that disrupt the output signal. Resolve these issues by replacing faulty components, recalibrating the module, and verifying proper wiring and power supply voltage levels to ensure accurate and stable analog outputs within the PLC system.
Technical specifications
The Allen-Bradley 1746-NO4I is a four-channel analog output module (0-20 mA) for SLC 500 PLCs, suitable for both fixed and modular systems. It controls modulating devices, re-transmits signals, and offers configurable properties. It can be powered internally or externally and features specific electrical and performance characteristics, including 16-bit resolution, defined current draw, over-range capacity, isolation, update/response times, temperature range, and accuracy drift. It requires shielded cabling and supports a specific load range, utilizing a removable terminal block for easy installation in a 1746 chassis.
Our Repair Process for the
1746-NO4I
Our repair process for the Allen Bradley 1746-NO4I analog output module begins with a thorough diagnostic evaluation to pinpoint the root cause of the malfunction, addressing common issues such as output signal drift, calibration errors, and incorrect voltage or current range outputs. Technicians inspect for component degradation, power supply irregularities affecting signal integrity, and wiring faults including short circuits and open circuits. The repair involves replacing defective components, followed by meticulous recalibration of the module using potentiometers to restore accuracy. Upon completion of component replacement and recalibration, technicians verify proper wiring connections and confirm stable power supply voltage levels. The final step is rigorous testing to guarantee accurate and stable analog outputs, ensuring the module performs within specified parameters before it is returned to service.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.
Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
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