4-291 Before Using the Products2 Preparation3 Connection4 Setup5 Adjustment6 When in Trouble7 Supplement1. Details of parameter[Class 3] Verocity/ Torque/ Full-closed controlPr3.21 Title Speed limit value 1 Relatedcontrol mode P S T FRange 0 to 20000 Unit r/min Default 0Set up the speed limit used for torque controlling.During the torque controlling, the speed set by the speed limit value cannot be exceeded.When Pr3.17 = 2, the speed limit is applied upon receiving positive direction command.Pr3.22 Title Speed limit value 2 Relatedcontrol mode P S T FRange 0 to 20000 Unit r/min Default 0Pr3.17 Pr3.21 Pr3.22 Pr3.15 Speed zero clamp(ZEROSPD)Analog torquecommand direction Speed limit value0 0 to 20000 No effect0 No effectNo effectPr3.21 setup value1 to 3 OFF Pr3.21 setup valueON 020 to 20000 0 to 20000 0 No effect Positive direction Pr3.21 setup valueNegative direction Pr3.22 setup value0 to 20000 0 to 20000 1 to 3 OFF Positive direction Pr3.21 setup valueNegative direction Pr3.22 setup value0 to 20000 0 to 20000 1 to 3 ON No effect 0Speed limit value of negative direction command when Pr3.17 = 2.Pr3.23 * Title External scale selection Relatedcontrol mode P S T FRange 0 to 2 Unit — Default 0CautionSelect the type of feedback scale.Setupvalue Feedback scale type Compatible scale Compatiblespeed0 A,B phase output type *1 Feedback scale of A, B phase output type to 4Mpps(after quadrupled)1 Serial communication type(incremental version) *1Sony Manufacturing Systems Corp.SR75, SR85, SL700, SL710 to 400Mpps2 Serial communication type(absolute version) *1Mitsutoyo Corp.AT573, ST771A, ST773ASony Manufacturing Systems Corp.SR77, SR87to 400Mpps*1 Connect the feedback scale so that it increments the count as the motor shaftturns positive direction, and decrements as the shaft turns negative direction. If thisconnection arrangement is impossible due to installation condition, etc., use the countreverse function of Pr3.26 Reversal of direction of external scale.When the setup value is 1 or 2 while the A, B phase output type is connected, Err50.0External scale wiring error protection occurs, and if the setup value is 0 while the serialcommunication type is connected, Err55.0, 1 or 2 A phase, B phase or Z phase wiring errorprotection will occur.NoteRelated page• For parameters which No. have a suffix of “ * ”, changed contents will be validated whenyou turn on the control power.• P.3-30... “Inputs and outputs on connector X4” • P.6-3 “Protective Function”