3.8 Special Wiring1579) Absolute Encoder Home Position Error DetectionCn-02 Bit 1 Absolute Encoder HomePosition Error DetectionFactorySetting: 0For Speed/Torque Controland Position ControlThis memory switch is used to specify whether to use home position error detection(alarm A.80) when an absolute encoder is used.Setting Meaning0 Detects a home position error.1 Does not detect a home position error.Normally, set this memory switch to “0.”This memory switch has no significance when an incremental encoder is used.3.8.6 Extending an Encoder Cable1) Both incremental and absolute encoders have a standard encoder cable (maximum 20meters (65.6 ft.)). If a longer cable is required, prepare an extension cable as describedbelow. The maximum allowable cable length is 50 meters (164 ft.).a) 3-meter (19.8 ft.) Cable with Connectors:• For incremental encoder: DP9320089-1• For absolute encoder: DP9320088-1TERMS Home position error detectionThis function detects an encoder count error resulting from noise. It checks the number ofpulses per motor revolution, and outputs a home position error alarm if that number is incor-rect.If the absolute encoder detects an error, it inverts phase C and notifies the Servopack of theerror. In this case, this “home position error detection” function also works.3
