SCF : Full Featured

 * When your application requires more functionality. the SCF has the        
    additional I/O to meet your needs.
 * 2-wire RS485 network communication using Modbus RTU protocol is
    standard.  The SCF allows for either 2-wire or 3-wire start stop without
    programming! Additional I/D provides for two solid state outputs and
    two analog outputs (speed and load).

 SCM : Basic and Beyond

 Feature :
    Rich for motor control application that require variable speed, and cost-    effective enough for those that do not. The SCM series drive virtuallye
    laminates the need for 2-speed motors and starters and reversing
    starters, and it can be applied as a "phase-converter" to  operate to a
    three-phase motor from a single-phase supply.