Functions And Configuration; Introduction - Mitsubishi Electric GENERAL PURPOSE AC SERVO MR-E- A/AG Instruction Manual

1. FUNCTIONS AND CONFIGURATION

1. FUNCTIONS AND CONFIGURATION

1.1 Introduction

The Mitsubishi MR-E series general-purpose AC servo is based on the MR-J2-Super series, and has the
same high performance and limited functions.
It has position control and internal speed control modes. Further, it can perform operation with the
control modes changed, e.g. position/internal speed control. Hence, it is applicable to a wide range of
fields, precision positioning and smooth speed control of machine tools and general industrial machines.
As this new series has the RS-232C or RS-422 serial communication function, a servo configuration
software-installed personal computer or the like can be used to perform parameter setting, test operation,
status display monitoring, gain adjustment, etc.
With real-time auto tuning, you can automatically adjust the servo gains according to the machine.
The MR-E series servo motor is equipped with an incremental position encoder that has the resolution of
10000 pulses/rev to ensure high precision positioning.
(1) Position control mode
An up to 500kpps high-speed pulse train is used to control the speed and direction of a motor and
execute precision positioning of 10000 pulses/rev resolution.
The position smoothing function provides a choice of two different modes appropriate for a machine, so
a smoother start/stop can be made in response to a sudden position command.
A torque limit is imposed on the servo amplifier by the clamp circuit to protect the power transistor in
the main circuit from overcurrent due to sudden acceleration/deceleration or overload. This torque
limit value can be changed to any value with the parameter.
(2) Internal speed control mode
The parameter-driven internal speed command (max. 7 speeds) is used to control the speed and
direction of a servo motor smoothly.
There are also the acceleration/deceleration time constant setting in response to speed command, the
servo lock function at a stop time.
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