Copley Controls: Stepnet Plus Module EtherCAT, 1-Axis (SEM Series)

14-90V VDC EtherCAT Drive for Stepper Motors

Description

Stepnet SEM is a high-performance, DC powered drive for control of stepper motors via EtherCAT, an Ethernet-based fieldbus. The SEM operates as an EtherCAT slave using the CAN application layer over EtherCAT (CoE). Supported modes include: Profile Position-Velocity, Cyclic Synchronous Position-Velocity (CSP, CSV), Interpolated Position Mode (PVT), and Homing.

With encoder feedback a stepper can be operated as a brushless servo motor enabling ±10V analog or digital PWM velocity or torque control in addition to EtherCAT. Direct position control from pulses in CW/CCW, Pulse/Dir, or Quad A/B encoder format works in either microstepping or servo modes.

Twelve high-speed digital inputs with programmable functions are provided, and a lower-speed input for a motor temperature switch.

An SLI (Switch & LED Interface) function is supported by another high-speed input and four high-speed digital outputs. If not used for SLI, the input and outputs are programmable for other functions. Two open-drain MOSFET outputs can drive loads powered up to 24 Vdc.

An RS-232 serial port provides a connection to Copley’s CME2 software for commissioning, firmware upgrading, and saving configurations to flash memory.

Drive power is transformer-isolated DC from regulated or unregulated power supplies. An AuxHV input is provided for “keep-alive” operation permitting the drive power stage to be completely powered down without losing position information, or communications with the control system.

Control Modes

Command Interface

Communications

Feedback

Incremental

I/O

Dimensions: mm [in]

Model No.: SEM-090-07, SEM-090-10