The Allen-Bradley/Rockwell Automation 1336F-BRF20-AA-EN-GMS5 drive is an AC motor controller with adjustable frequency. The controller indicates a ground fault error when a current of more than 100 Amps has been detected flowing to the ground at 1 or more of the output terminals. Other conditions that can cause the drive to fault are if an overrun of the 2.5 control loop has occurred, if excessive currents have been detected between terminals, if the controller’s input power is supplied by a single-phase source, if the controller experiences difficulties when reading the EEPROM when initializing operation, or if the heatsink thermistor is not functioning properly. When mounting the Allen-Bradley 1336F-BRF20-AA-EN-GMS5, adequate flow of air from and into the drive should be provided. One way of ensuring this is by leaving a mounting clearance of 152.4 millimeters on the upper and lower sides of the controller and a clearance of 101.6 millimeters on the sides of the controller.

When the 1336F-BRF20-AA-EN-GMS5 is installed in industrial environments with extremely high ambient temperatures, extra cooling mechanisms can be provided to ensure optimal performance for the controller. To guard the 1336F-BRF20-AA-EN-GMS5 against a surge in the voltage, the controller is fitted with a metal oxide varistor, like the other controllers in the same series. The varistor also provides phase to phase and phase to ground protection. The 1336F-BRF20-AA-EN-GMS5 accommodates an IP20 rated enclosure and it is shipped with an English instruction manual. For communication, the 1336F-BRF20-AA-EN-GMS5 supports a DeviceNet communication module with a snap-in cradle. The controller has its input voltage capped between 380 and 480 Volts AC.