The HMX34AG07221-N drive is an Eaton Cutler-Hammer H-Max series variable frequency drive. It is a compact size drive with dimensions of 9.06 inches in width, 10.49 inches in length, and 25.98 inches in height. The drive weighs 82.6 pounds. It is a three-phase device with a current rating of 72 Amps. It uses EMC C2 input. A keypad and a graphical display panel are present on the front panel of the drive to enter input information and to configure the drive. No brake chopper is available on the drive. The power rating of the drive is 50 Horsepower. The voltage rating of the drive is 380 to 480 Volts AC. The HMX34AG07221-N drive has an open NEMA Type 1 enclosure with a protection rating of IP 21. It is not waterproof and it should be protected against water sprays.

The HMX34AG07221-N drive is widely used with pump and HVAC applications. It uses a motor control algorithm to regulate the speed and torque of three-phase industrial motors. The drive is equipped with an onboard Ethernet controller. A variable torque current of 72 Amps is produced by the drive. The adjustable acceleration time of the drive ranges between 0.1 to 3000 seconds. The frequency range of the drive is between 0 and 320 Hertz. No bypass or line contactor is present in this drive. The HMX34AG07221-N drive has a starting torque rating of 150%. The input frequency of the drive is 50 to 60 Hertz. This variable frequency drive can be programmed by using a personal computer that is connected through serial communication. User-configurable alarms can be set to the drive to alert the operators about different events.