The Emerson M600 series is the perfect choice for applications that require high performance open-loop control of induction or permanent magnet motors. SI-Encoder option modules are available for applications that require more precise closed-loop velocity and digital lock/frequency following of induction motors. The Unidrive M600 adds useful networking capability and additional I/O and improved motor control performance for open loop applications to the family. It also provides an easy upgrade for existing Commander SK users.