Mitsubishi Electric FR-D720S SC EC, Instruction Manual, Page: 503 / 512

Appendix Specification change
FR-D700 SC EC A - 19
A.5 Specification change
A.5.1 SERIAL number check
Check the SERIAL number indicated on the inverter rating plate or package (refer to
section 1.2).
The SERIAL consists of:
●
1 version symbol,
●
2 numeric characters or 1 numeric character and 1 alphabet letter indicating year and month
Last digit of the production year is indicated as the Year, and the Month is indicated by 1 to
9, X (October), Y (November), and Z (December).
●
6 numeric characters indicating control number.
I002089E
Fig. A-7: Rating plate example
SERIAL (Serial No.)
Symbol Year Month Control number