Rugged power terminals and large heatsink area are assets to produce 500A motor currents for this controller. The internals contain a current reference, cycle-by-cycle current regulation with UVLO, smooth interacting temperature sensing and internal fan circulation. A fan on the heatsink (finned side) is responsible to aid in heat removal for the Power Center. The interface is fully opto-isolated, easing communication to the Power Center while maintaining full electrical isolation on the input side. The throttle is also isolated, protecting the user from hazardous voltages present on some potentiometer-type input motor controllers. On-off control from the 24V battery pack tap is accomplished with a power optocoupler, providing power-up and power-down control of the internal gate drive electronics. When the ENABLE is not powered, no power is consumed from the 24V tap. Current draw is roughly 260mA when the Power Center is running. The New Heatsink has fins on the long side and is oversized to ease installation. It has provision for the fan and corner mounting instead of a separate bracket to hold the fan and mount the unit down (smaller pics below). The overall size is 12L x 8W x 6T including fan.
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