Sigma II User’s Manual Chapter 3: Wiring3 - 193.4.3 I/O Signal Names and FunctionsThe following section describes servo amplifier I/O signal names and functions. Input SignalsNote 1. The functions allocated to /S-ON, /P-CON. P-OT, N-OT, /ALM-RST, /P-CL, and /N-CL inputsignals can be changed with parameters. (See 5.3.3 Input Circuit Signal Allocation .)2. Pin numbers in parenthesis ( ) indicate signal grounds.3. The voltage input range for speed and torque references is a maximum of ±12V.Signal Name PinNo. Function ReferenceCommon/S-ON 40 Servo ON: Turns ON the servomotor when the gate block in the inverter isreleased. 5.5.2/P-CON 41* Function selected via parameter. 5.2.15.2.7Proportional opera-tion reference Switches the speed control loop from PI (proportional/integral) to P (proportional) control when ON. 5.2.1Direction reference With internal reference speed selected: switches thedirection of rotation. 5.2.6Control modeswitching 5.2.7Zero-clamp reference Speed control with zero-clamp function: referencespeed is zero when ON. 5.4.3Reference pulseblock Position control with reference pulse stop: stopsreference pulse input when ON. 5.2.10P-OTN-OT 4243Forward RunprohibitedReverse RunprohibitedOvertravel prohibited: stops servomotor whenmovable part travels beyond the allowable range ofmotion. 5.1.2/P-CL/N-CL 4546* Function selected with a parameter. —Forward current limitONReverse current limitONCurrent limit function used when ON. 5.1.3Internal speedswitching With internal reference speed selected: switches theinternal speed settings. 5.2.6/ALM-RST 44 Alarm reset: Releases the servo alarm state. 5.5.1+24V IN 47 Control power supply input for sequence signals: users must provide the+24V power supply. 5.2.4SEN 4 (2) Initial data request signal when using an absolute encoder. 5.2.3BATT(+)BATT(-) 2122 Connecting pins for the absolute encoder backup battery. 5.2.3SpeedReference V-REF 5 (6) Speed reference input: ±2 to ±10V/rated motor speed (Input gain can bemodified with a parameter Pn300.) 5.2.1TorqueReference T-REF 9 (10) Torque reference input: ±1 to ±10V/rated motor speed (Input gain can bemodified by parameter Pn400.) 5.2.1PositionReferencePULS/PULSSIGN/SIGN781112Corresponds to refer-ence pulse inputLine-driverOpen-collectorInput mode• Code + pulse string• CCW/CW pulse• Two-phase pulse (90° phase differential)5.2.1CLR/CLR 1514 Error counter clear: Clears the error counter during position control. 5.2.1PL1PL2PL331318+12V pull-up power supply when PULS, SIGN and CLR reference signalsare open-collector outputs (+12V power supply is built into the servoamplifier). 5.2.1Position Á SpeedSpeed Á Torque Enables control mode switchingTorque Á Speed }
