Sigma II User’s Manual Chapter 5: Parameter Settings and Functions5-1395 Improved Functions5.11 Improved Functions (Applicable only to SGDH amplifiers of version#33 or higher.)5.11.1 Moment of Inertia Ratio Setting RangeA load with moment of inertia ratio (Pn103) more than the existing maximum value10,000% may be connected to a direct-drive motor. Accordingly, the upper limit ofPn103 is increased to 20,000%. (100% = 1:1)5.11.2 Adaptation to Single-turn Data Absolute EncoderA single-turn data absolute encoder is mounted to SGMCS servomotor as standard.The machine configuration with a SGMCS servomotor does not require harmonicgear, etc. so that the servomotor can be connected directly to a load. Therefore, forits absolute value detecting system, the load-end absolute value can be obtained bymeasuring only the angle of motor shaft.In this case, the encoder multi-turn data is not required and no backup battery isrequired.(With a single-turn data absolute encoder, the multi-turn data is always set to"0")Confirm the single-turn absolute encoder model in Motor Models Display (Fn011)on the digital operator or panel operator:FN011-E. □□■■ (Encoder Model/Encoder Resolution Display)□□：Encoder model00: Incremental encoder01: Multiturn data absolute encoder02: Single-turn data absolute encoder■■：Encoder Resolution13: 13 bits16: 16 bits17: 17 bits20: 20 bitsSingle-turn data absolute encodermodel UTSB □ -B □□□□
