It has a built-in RS-485 serial interface (MODBUS), a digital keypad that can be connected to a VFD with an extended wire, a multi-function I/O terminal, V/F control, and auto-torque/auto-slip correction, among other features. This series is the first generation of AC motor drives. It is currently updated with the B and M series.

Specifications: — Analog frequency setting: 0-10VDC, 4-20mA — Output frequency: 0.1-400Hz — 1-10HP: built-in brake chopper, DC braking function
— You can set a coast to stop or a ramp to halt.
— The carrier frequency is adjustable between 3kHz and 15kHz.
— JOG operation, 8-step preset speed control
— two sets of acceleration/deceleration time options and acceleration/deceleration S-curve settings
— RS-485 serial interface built-in (Max. baud rate: 4800)
— With an extended cable shorter than 5m, a digital keypad can be linked to a VFD.