Product Description
The Allen-Bradley 150-B97NBR motor controller, part of the SMC Dialog Plus family, offers full voltage, dual ramp, current limit, and soft start modes. Soft start, the most versatile, gradually increases motor torque (0-90% of rotor torque) and voltage over a 0-30 second ramp time. A selectable kickstart option delivers a 550% full load current boost for demanding loads. Current limit start restricts peak current, while dual ramp suits varying loads. Full voltage start provides across-the-line starting. The open-enclosure controller operates optimally between 0-50C, supports 200-460VAC input, and features a 97A output current, 5-75HP output power (at 460VAC, 50-60Hz), and 24VAC/DC control voltage.
Is Your Device Showing These Signs?
The Allen Bradley 150-B97NBR commonly experiences issues such as thermal overloads tripping due to excessive current draw, requiring inspection of motor windings and load. Contact wear on the bimetallic overload relay causes nuisance tripping; replace the heater element or entire overload relay. Calibration drift in the current sensing mechanism leads to inaccurate protection, necessitating recalibration or component replacement. Damage to the reset mechanism prevents proper operation, requiring repair or replacement of the reset assembly. Environmental factors such as dust and moisture ingress degrade performance, prompting cleaning and sealing of the enclosure.
Technical specifications
The Allen-Bradley 150-B97NBR motor controller (SMC Dialog Plus family) provides multiple starting modes: full voltage, dual ramp, current limit, and soft start. Soft start offers adjustable torque and voltage ramping. It also includes a kickstart option for high-demand loads. The controller supports 200-460VAC input, 97A output current, 5-75HP output power, and 24VAC/DC control voltage, operating optimally between 0-50C.
Our Repair Process for the
150-B97NBR
Our repair process for the Allen Bradley 150-B97NBR begins with a thorough inspection to diagnose the specific failure. If thermal overloads are tripping, the motor windings and load are inspected to identify excessive current draw. Contact wear on the bimetallic overload relay necessitates replacement of the heater element or the entire overload relay. Calibration drift in the current sensing mechanism requires recalibration or component replacement to ensure accurate protection. A damaged reset mechanism results in repair or replacement of the reset assembly. Environmental degradation due to dust and moisture ingress is addressed through cleaning and sealing of the enclosure to restore optimal performance.
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.

















