Reference Commands

Elmo’s servo drives motion profile (trajectory) generates command reference in many ways.

The command signals can be a function of torque, velocity or position. Each reference command is suitable for any application, depends on profile requirements and the internal or external command source.

Elmo’s Servo drives offer a wide variety of reference command options as a built-in standard

• Direct Communication
  Real-time drive communication command – Elmo’s digital servo drives communicate with various networks including EtherCAT, CANopen, Ethernet, USB, and RS232.
• User program
  In-drive program written and stored in the drive’s non-volatile memory. In this mode the motor profile generates from the drive internal program code.
• ±10V Analog input
  The profile build by external analog voltage signal
• PWM command
  The profile is built by external PWM signal

• Pulse and Direction
  The profile is built by external step and direction signals
• Encoder Follower
  In Follower mode, the external reference command tracks the auxiliary encoder velocity/position mode at a ratio that is defined by the user.
• ECAM
  An acronym for electronic CAM, in which the position reference to the drive is not proportional to the total external inputs, but is rather a function of them.

• Jogging
  The user specifies the motor steady velocity and acceleration limit in order to achieve the target velocity.

Design Features

• A great variety of reference command modes as standard in Elmo’s servo drives
• Three way reference command setting: External, Internal or via Communication
• Includes ECAM (electronic gearing) for a non-liner trajectory function

For more information please contact our motion control experts.