Omron Electronics has developed the MX2 inverter drives to offer a comprehensive and cost-effective automation solution for machine applications. The inverter drives provide motor control features such as 200 per cent starting torque, torque control in open loop, induction motor and permanent magnet motor control, one-parameter auto-tuning, drive sequence programming and built-in position control functionality. They also incorporate safety functions that conform with ISO 13849.Industrial standard networks such as Profibus, Devicenet, Ethercat or Componet can be integrated. For motor control, MX2 drives use current vector technology and offer a starting torque of 200 per cent at 0.5Hz combined with strong open-loop torque control characteristics. In certain applications, this allows the MX2 to be used as an alternative to a flux vector or servo drive. The MX2 allows the user to create solutions using logic programming, via a flowchart programming tool. Programs with up to 1,000 lines of code can be created with five tasks running in parallel. The MX2 can be configured to follow a master speed signal, with no additional hardware.
The drives can be used for simple positioning tasks without the need for an external position controller. Up to eight positions plus home can be programmed by the user and the drive can be switched between speed and position control as required. To help address machine control safety requirements in line with ISO 13849-1 Cat 3, MX2 drives incorporate two safety inputs and an external device monitoring (EDM) output. This means that the requirement to use dual contactors on the drive output to perform safety functions is eliminated.
Modbus RS485 is built in and option cards are planned for all key Fieldbus networks such as Devicenet, Profibus and Ethercat. A separate 24V DC input is standard, which can be used to keep the drive operational in the event of a mains input failure. Omron MX2 inverter drives for machine applications are available in 200V single-phase versions with ratings from 0.2 to 2.2kW, in 200V three-phase versions with ratings from 0.2 to 15kW and in 400V three-phase versions with ratings from 0.4 to 15kW.
