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

9 Adjustments9.4.6 Setting the Speed Bias9.4.6 Setting the Speed BiasThe settling time for positioning can be reduced by setting the following parameters to add bias in the speed referenceblock in the SERVOPACK.Pn107BiasPositionPn108Setting Range Setting Unit Factory Setting Setting Validation0 to 450 min -1 0 ImmediatelyBias Width AdditionPositionSetting Range Setting Unit Factory Setting Setting Validation0 to 250 Reference units 7 ImmediatelyTo reduce the positioning time, set these parametersbased on the machine’s characteristics.The Bias Width Addition (Pn108) specifies when theBias (Pn107) is added and the width is expressed inerror pulse units. The bias input will be added whenthe error pulse value exceeds the width set in Pn108.Bias width addition(Pn108)Bias (Pn107)Speed referenceBias setNo biasBias (Pn107)Bias width addition(Pn108) Pn108Error pulse9.4.7 Speed Feedback FilterPn308 Speed Feedback Filter Time ConstantSpeed PositionSetting Range Setting Unit Factory Setting Setting Validation0 to 65,5350.01 ms 0 Immediately(0.00 to 655.35 ms)Sets the 1st-order filter for the speed loop’s speed feedback. Makes the motor speed smoother and reduces vibration. If theset value is too high, it will introduce a delay in the loop and cause poor responsiveness.9-22