Servo Technology Transformed
by a New Control Algorithm

The MR-H settling time has been sharply reduced when compared to conventional servo systems. The ability of the MR-H to respond quickly and precisely to a reference change is due to the high-performance Reduced Instruction Set Computer (RISC) platform, and the patented model reference adaptive control logic. These features make the MR-H ideal for applications which require high speed positioning.

The MR-H has the most stable performance at low speed in its class of devices. This is made possible through the application of a high-resolution serial encoder and the model-reference adaptive control theory. This low speed performance makes the MR-H well suited for low speed machining operations.

The patented model reference adaptive tuning virtually eliminates the time consuming process of manually tuning the amplifier. During operation. the MR-H’s internal gain settings are constantly updated to the optimum level, The result is consistently stable control, even under fluctuating load conditions. With Real Time Automatic Tuning the MR-H is ideal for winding applications.

Thanks to Mitsubishi’s unique absolute positioning (ABS) it is possible to construct ABS systems with Mitsubishi’s multi-purpose MELSEC-A positioning units by merely using a motor with an ABS encoder. There’s no need for home position return after power has been turned off.

• A sample program illustrating construction of an ABS system with the AD71 and AD75P are available.

• A motor equipped with a ABS encoder and a battery (separate option) are required.

• In this revolutionary system, all data is transmitted with just one pair of signals (four pairs with the power supply and ABS power supply). A dedicated gate array for the encoder has been developed, enabling data to be transmitted via serial communications. The wiring is simpler than ever.

• High-resolution 16384 p/rev encoder is standard (excluding HA-MH and HA-FH motors). High-resolution positioning of 0.022 degrees can be achieved with the motor shaft and high speed feed of 49m/min in feed units of 1µm.

• Optical communications are optional, greatly facilitating long-distance wiring.

An RS-232C communication port comes as standard equipment in the MR-H series. This port allows expansion of the system and operating environment through connection to a PLC or personal computer.