3.3 I/O Signal Connections3-153 Wiring and Connection3.3 I/O Signal ConnectionsThis section describes the names and functions of I/O signals (CN1) on the multi-winding drive unit and thesafety function signals (CN8) on the SERVOPACK. Also connection examples are provided for different con-trol methods.3.3.1 Names and Functions for Multi-Winding Drive Unit I/O Signals (CN1)The following tables give the names and functions of the I/O signals (CN1) on the multi-winding drive unit.(1) Input SignalsControlMethodSignalName Pin No. FunctionRefer-enceSectionCommon/S-ON 40 Servo ON/OFF: Turns ON/OFF the servomotor. 5.2.1/P-CON 41Proportional con-trol referenceSwitches the speed control loop from PI (propor-tional/integral) to P (proportional) control whenON.6.7.4Rotation Direc-tion referenceWith internal set speed control selected: Switchesthe servomotor rotation direction. 5.6.1Control switch-ing 5.7.2Zero-clamp refer-enceWith speed control with zero-clamp functionselected:Reference speed is zero when ON.5.3.5Reference pulseblockWith position control with reference pulse stopselected: Stops reference pulse input when ON. 5.4.8P-OTN-OT4243Forward runprohibited,Reverse runprohibitedWith overtravel prevention: Stops servomotorwhen movable part travels beyond the allowablerange of motion.5.2.3/P-CL/N-CL4546Forward externaltorque limit,Reverse externaltorque limitActivates/deactivates external torque limit func-tion.5.8.25.8.4Internal set speedswitchingWith internal set speed control selected: Switchesthe internal set speed settings. 5.6.1/ALM-RST 44 Alarm reset: Releases the servo alarm state. −+24VIN 47Control power supply input for sequence signals.Allowable voltage range: 11 to 25 VNote: The 24 VDC power supply is not included.3.5.2SEN 4 (2) Initial data request signal when using an absolute encoder. 5.9.2BAT (+)BAT (-)2122Connecting pin for the absolute encoder backup battery.Do not connect when the encoder cable with the battery case is used.3.7.25.9.1/SPD-D/SPD-A/SPD-B/C-SEL/ZCLAMP/INHIBIT/G-SEL/PSELASignalsthat canbe allo-catedThe following input signals can be changed to allocate functions:/S-ON, /P-CON, P-OT, N-OT, /P-CL, /N-CL, and /ALM-RST.3.4.15.3.55.4.35.4.85.6.15.7.16.6.13.9.4Speed V-REF 5 (6) Inputs speed reference. Input voltage range: ± 12 V max. 5.3.15.5.4Position ↔ speedPosition ↔ torqueTorque ↔ speedEnables control switching.
