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EDC Driver Unit

Features of EDC Driver Unit

Adopts new servo algorithm (achieves settling time of 1 [ms])

The EDC Driver Unit adopts an original disturbance observer and preview-based feed-forward
control, which significantly reduce positioning time.

Positioning controller function

Positioning operation can be controlled without complicated communications or upper
controller.

Compact Driver Unit

Combined with special electric components and advanced integration technology, the Driver
Unit body is 65% smaller than conventional NSK units.

Variety of control I/Os

Control inputs/outputs required for positioning are available, including encoder output, servo
control and program control. No additional sensor is required to monitor the status.

Components and functions of EDC Driver Unit

Rear mounting hole Seven-segment LED indicator
Optional mounting bracket available for front
mounting. Driver Unit status can be identified at a
glance.
Independent inputs for main power and control
power Analog monitor output terminal
Separate power lines assure system safety.
Speed, positioning error, torque, motor current, etc.
Motor cable connector can be monitored by analog voltage.
Clamping type connector shortens work Useful for set-up tuning or for monitoring operating
time and prevents miswiring. status.

RD-232C communication connector

Connect a portable terminal to set
parameters.
Use the EDC Megaterm software to communicate
with a PC

Control I/O connector

A variety of signals are available, including
servo on, in-position, emergency stop, area
signal, override, various alarm outputs, and
 A/ B/ Z.

EDC Megaterm Application Software

Once installed on your computer, this software enables editing, preparation and
control of EDC Driver Unit programs and parameters. It also facilitates allocation
and monitoring of control input/output. And its oscilloscope function allows for easy
confirmation of Motor operation.
EDC Megaterm can be downloaded for free from the NSK Web site (http://www.nsk.

com/).

Personal computer RS-232C