Mitsubishi Electric MELSERVO-J5 Series User Manual page 26

Secondary side (magnet)
Model
*1
Serial number
Country of origin
*1 Production year and month of the secondary side of linear servo motor are indicated in a serial number on the rating plate.
The year and month of manufacture are indicated by the last two digits of the year and one digit of the month [1 to 9, X (10), Y (11), and
Z (12)].
For January 2012, the Serial No. would be "SER. _ _ _ _ _ _ _ _ _ 121".
*2 Certified products by the Authorized Bodies are marked. The mark depends on the related Authorized Bodies.
5 Linear servo motor
24
5.1 Rating plate
*2
Manufacturer