This part is a kind of semiconductor called MR-E-70A-QW003.
Function of this product has EZ Motion E Serial.
Manufacturers : MITSUBISHI
Image and pinout :

Some of the text within the PDF file :
MR-E Super S U P E R User-friendly servo with easy operation Reducing workload with high performance and Enhancing the system cost 1.High Performance High-accuracy positioning (Resolution per servo motor: 131072) ● High responsiveness ● 2.Easy To Use Connectors have been adapted for the servo amplifier terminal block, thereby reducing the time required for wiring. ● Connectors are located on the front of the servo amplifier, thereby connecting the cables easily. ● Gain settings can be performed easily by real-time auto-tuning function. ● 1 Vibration can be suppressed by the adaptive vibration suppression control function. ● Optimum tuning is possible with a personal computer and optional setup software (MR Configurator). ● 2 [ ... ]
MR-E-70A-QW003 PDF Datasheet Download
