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Servo drives with secondary encoder inputs

Applied Motion Products introduced the SSDC series of its Stepservo drives. They offer more digital inputs and outputs (I/O) than its integrated motor counterparts, such as secondary encoder inputs for dual position-loop control.

SSDC drive and motor (Source: Applied Motion)

The series’ are separate, non-integrated drives that, when paired with existing Stepservo motors, can reduce replacement costs for individual motors and provide convenient wiring options for users with sufficient space in control cabinets. The drives offer full closed-loop servo control of step motors, creating a more efficient and higher performance motion control system. These drives and motors provide peak torque at low speed and faster acceleration rates, reduce current in the motor, and consume less power than traditional step motor systems, said the company.

SSDC drives daisy-chained (Source: Applied Motion)

These drives come with a range of communication options including Ethernet/IP, Modbus and SCL over Ethernet or EIA-485. These models all feature dual-port communications for daisy-chain networking and can run stored Q programs stand-alone. SSDC models for use as drive devices on CANopen and Ethercat networks are also available, with functionality to execute stored Q programs using manufacturer specific CANopen objects. Every SSDC drive features eight digital inputs, four digital outputs, and two analog inputs, as well encoder outputs and secondary encoder inputs.

The series of drives are offered with two base power levels. The SSDC03 drives provide 3,0 A/phase peak-of-sine to the motor, are optimized for use with 24 VDC supply voltage, and can be paired with Nema 11 frame motors. The SSDC10 drives provide 10,0 A/phase peak-of sine to the motor, are optimized for use with 48 VDC supply voltage, and can be paired with Nema 17, 23, 24, and 34 frame motors.

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