About the 300FN4042
300FN4042 is a Non-Regenerative 460 VAC drive manufactured by Reliance Electric as a part of their FlexPak 3000 series. The horsepower rating is 300 HP and the armature is 500 VDC. The field current is 300 VDC. The full load RMS AC line current is 421, the full load rated DC armature current is 495, and the rated field current is 15. The dimensions are 599 mm (23.6 in) x 850 mm (33.5 in) x 470 mm (18.5 in) x 822.8 mm (32.4 in) x 424.7 mm (16.7 in). The weight is 100 kg (220.5 lb).
Under the Quick Start menu, Top Speed defaults to 500 RPM, which, if there is no weakening, is the base speed that can be found on the nameplate. If there is field weakening, then the value of Top Speed is equal to the field weakened speed. The Motor Rated Armature Amps defaults to 8 amps. Any parameter whose units are “%FLA” are based on this input value. The Motor Rated Arm Volts defaults to 240 volts, which can be found on the motor nameplate. In regenerative drives only, the Reverse Disable defaults to OFF. When this option is ON, the speed reference is prevented from going below 0. It does not prevent the reverse bridge from being activated. The Feedback Select defaults to Armature Voltage, which determines which type of feedback signal will be used for the speed/voltage loop. The ANLG TACH VOLTS/1000 defaults to 18V/1000 RPM. For this screen, it is only displayed if Feedback Select was set to AC TACH or DC TACH.
