Product Overview
The Allen-Bradley 150-F780NBE is a solid-state controller from the SMC-Flex series, engineered to mitigate the torque surge common in across-the-line starting. With a controller rating of 780 A and 600 Hp at 460V AC, this unit delivers smooth, stepless motor acceleration. Its soft start and soft stop features protect gears, couplings, and belts from mechanical stress, while the selectable kickstart option provides an extra torque pulse for high-friction loads.
Designed for low-induction motors, the 150-F780NBE simplifies starting procedures and reduces downtime caused by vibration. The dual ramp start feature suits applications with varying loads, two-speed requirements, or reversing needs. Additionally, the current limit start function caps in-rush current during acceleration, and the preset slow speed feature offers two jog speeds in both forward and reverse—without requiring a reversing contactor.
Technical Specifications
The following specifications are verified for the Allen-Bradley 150-F780NBE:
| Parameter |
Value |
| Manufacturer |
Allen Bradley |
| Category |
Drives |
| Product Line |
SMC-Flex |
| Part Number |
150-F780NBE |
| Weight |
396.00 lbs (179.62 kg) |
| Bulletin Number |
Solid State Controller |
| Enclosure Type |
Open |
| Controller Rating |
780 A, 600 Hp @ 460V AC |
| Input Line Voltage |
200-460V AC, 3-phase, 50 and 60 Hz |
| Control Voltage |
110/120V AC (625-1250 A units) |
| Rated Voltage |
200-460V AC |
These parameters confirm the 150-F780NBE is built for heavy-duty industrial motor control, offering robust current handling and flexible voltage compatibility.
Industry Applications
The 150-F780NBE excels in applications requiring controlled acceleration and deceleration. Typical use cases include:
-
Conveyor Systems: Soft start prevents product shift or spillage during startup and stop, reducing waste.
-
Pumps and Fans: The current limit feature minimizes in-rush current, protecting the motor and reducing electrical stress.
-
Mixers and Crushers: The kickstart option provides the extra torque needed to overcome high-friction loads, ensuring reliable starts.
Its dual ramp start is particularly valuable for machines with changing load conditions, such as centrifuges or winches, where smooth acceleration is critical.
Installation & Setup Guidance
When installing the Allen-Bradley 150-F780NBE, ensure proper clearance for ventilation, as the open enclosure requires adequate airflow. Mount the unit on a solid, vibration-free surface. Verify the input line voltage matches the controller rating (200-460V AC, 3-phase). Connect the control voltage (110/120V AC) as per the wiring diagram. For optimal performance, configure the soft start and stop parameters to match the motor and load characteristics. Always follow local electrical codes and safety regulations.
Maintenance & Reliability
Routine inspection of the 150-F780NBE ensures long-term reliability. Periodically check for dust accumulation on the heatsink and verify all electrical connections are tight. Monitor the controller for abnormal heating or vibration, which may indicate impending issues. Given its robust construction, the 150-F780NBE minimizes downtime, contributing to lower operational costs over its service life.
Buying Guide
Before purchasing, confirm that the 150-F780NBE's specifications match your motor's requirements—particularly the controller rating (780 A, 600 Hp @ 460V AC) and input voltage range. Verify the enclosure type fits your environment; this unit has an open enclosure, so it may require additional protection in harsh conditions. Consider spare parts availability and lead times. For a reliable supply, PLC Source PRO offers genuine Allen-Bradley products with competitive pricing.