  All 150A-300A modules are not yet UL listed. |
Regenerated voltage occurs when the speed of the motor exceeds the set speed on the drive. This can be due to braking or an overhauling load. In applications with extended braking times, high horsepower, or where frequent regeneration occurs, the M3645P Regenerative DC Bus Power Supply is the economical solution for controlling regenerative voltage. While resistor solutions waste regenerated energy as heat, the Bonitron M3645P returns the regenerated energy back to the input AC line. M3645P also acts as a rectifier, supplying power to the drive bus during motoring (Precharge circuit may be required, offered by Bonitron).
The M3645P Regenerative DC Bus Power Supply synchronizes to the frequency of the incoming power line, allowing it to automatically adapt to 50Hz or 60Hz input. Under normal conditions, the M3645P rectifies the AC line and supplies power to the load. During a braking event, as the DC bus rises above the AC line peak, the M3645P redirects current from the DC bus into the AC line to limit the rise in bus voltage and prevent overvoltage faults. While regenerating the M3645P will automatically fold back in an overcurrent condition, or shut down in the event that unsafe conditions are detected.
With the optional digital display, the current status of the M3645P is shown and fault records are stored, along with a lifetime count of regenerative energy.
Up to two 100A M3645P units can be run in parallel for high-power applications.
*Note that the M3645F includes fuses and fuse holders
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