Product Description
The Allen Bradley 20BD156A3ANNARN0 PowerFlex 700 AC drive is a 480V, 125HP PWM drive designed for precise control of three-phase AC induction motors in demanding applications. It features Volt per Hertz control, an internal dynamic brake transistor, CE-compliant EMC filtering, and flexible field programming via remote I/O and an LCD HMI. Key features include a high short-circuit rating (200kA), a 0.98 power factor with 97.5% PWM efficiency, built-in protection against various faults, auto-sensing BUS voltage regulation, flying start, inertia-ride through, and an embedded DC BUS choke for harmonic reduction. It also offers slip compensation, precise speed regulation (0.5% within 40:1 range), digital precision (0.01%), a multilingual LCD HMI, and remote I/O communication. Housed in a NEMA enclosure, it operates without derating from 0 to 50C, weighs 157.5 pounds, and has shipping dimensions of 33.46 x 15.90 x 10.85 inches.
Is Your Device Showing These Signs?
The Allen Bradley 20BD156A3ANNARN0 PowerFlex 755 AC drive commonly experiences issues related to IGBT failures, capacitor degradation within the DC bus, and encoder feedback malfunctions. Over time, the electrolytic capacitors in the DC bus dry out, leading to under-voltage faults and drive trips. Furthermore, the insulated-gate bipolar transistors (IGBTs) are prone to failure due to thermal stress or overcurrent events, necessitating replacement. Encoder feedback problems, stemming from faulty encoder cables or resolver issues, disrupt accurate speed and position control, requiring thorough diagnostics and component repair.
Technical specifications
The Allen Bradley 20BD156A3ANNARN0 PowerFlex 700 is a robust 125HP, 480V AC drive designed for precise motor control in demanding applications. It offers features like Volt per Hertz control, dynamic braking, EMC filtering, and flexible programming. Key benefits include high short-circuit protection, high power factor and efficiency, built-in fault protection, advanced motor control features, precise speed regulation, and remote communication capabilities. The drive is housed in a NEMA enclosure, operates without derating in a wide temperature range, and includes an embedded DC BUS choke for harmonic reduction.
Our Repair Process for the
20BD156A3ANNARN0
Our repair process for the Allen Bradley 20BD156A3ANNARN0 PowerFlex 755 AC drive begins with a comprehensive diagnostic evaluation to pinpoint IGBT failures, capacitor degradation, and encoder feedback malfunctions. Technicians conduct rigorous testing of the IGBTs, replacing any that do not meet factory specifications. The DC bus capacitors undergo capacitance and ESR testing; degraded capacitors are replaced with new, high-quality components. Encoder feedback issues are addressed through meticulous inspection and replacement of faulty encoder cables or resolvers, ensuring accurate speed and position control. Following component replacement, the drive undergoes extensive load testing to verify proper operation and adherence to performance standards.
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.