Sigma-II Series SGM*H/SGDH USER'S MANUAL - Esco Drives ...

8.4 Absolute Encoders8.4 Absolute EncodersWARNING• The output range of multiturn data for the Σ-II series absolute detection system differs from that for conventionalsystems (15-bit encoder and 12-bit encoder). When an infinite length positioning system of the conventionaltype is to be configured with the Σ-II series, be sure to make the following system modification.If a motor with an absolute encoder is used, a system to detect the absolute position can be made in the host controller.Consequently, operation can be performed without zero point return operation immediately after thepower is turned ON.SGMH-1 servomotor: With 16-bit absolute encoderSGMH-2 servomotor: With 17-bit absolute encoderAbsolute positiondetected continuouslyzero point return operationAbsolute encoderAbsolute EncoderTypeResolutionOutput Rangeof MultiturnDataAction when Limit Is ExceededΣ SeriesSGDSGDASGDB12-bit15-bit-99999 to+ 99999• When the upper limit (+99999) is exceeded in the forward direction,the multiturn data is 0.• When the lower limit (-99999) is exceeded in the reverse direction,the multiturn data is 0.Σ-ΙΙ SeriesSGDMSGDHSGDP16-bit17-bit-32768 to+ 32767• When the upper limit (+32767) is exceeded in the forward direction,the multiturn data is -32768.*• When the lower limit (-32767) is exceeded in the reverse direction,the multiturn data is +32768.** The action differs when the Multiturn Limit Setting (Pn205) is changed. Refer to 8.4.7 Multiturn LimitSetting.88-27