How to read the SERIAL number
Rating plate example
Symbol Year Month Control number
SERIAL
12
1. Introduction
1.1 Inverter model
The SERIAL consists of two symbols, three characters indicating the production year
and month, and six characters indicating the control number.
The last digit of the production year is indicated as the Year, and the Month is
indicated by 1 to 9, X (October), Y (November), or Z (December).