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

8 Operation8.7.4 Limiting Servomotor Speed during Torque ControlStepUse the following procedure to manually adjust the torque reference offset.Display afterOperationDigitalOperatorPanelOperatorDescription1 Press the DSPL/SET or MODE/SET Key to select the utilityDSPLSETfunction mode.(DSPL/SET Key)MODE/SET(MODE/SET Key)2 Press the LEFT/RIGHT or UP/DOWN Key or UP or DOWN Keyto select parameter Fn00B.*The digit that can be set will blink.3 Press the DATA/ENTER Key once, or DATA/SHIFT Key forDATAENTERmore than one second. The display will be as shown at the left.DATA/(DATA/ENTER Key) (DATA/SHIFT Key) The manual adjustment mode for the torque reference offset will(Press at least 1 s.)be entered.4Servo ONTurn ON the servo ON (/S-ON) signal. The display will be asshown at the left.5 Press the LEFT or RIGHT Key or DATA/SHIFT Key for less thanone second to display the torque reference offset amount.DATA/(DATA/SHIFT Key)(Less than 1 s.)6 Press the UP or DOWN Key to adjust the amount of offset.7 Press the LEFT or RIGHT Key or DATA/SHIFT Key for less thanone second to return to the display shown on the left.8 Press the DATA/ENTER Key once, or DATA/SHIFT Key forDATAENTERmore than one second to return to the Fn00B display of the utilityfunction mode.(DATA/ENTER Key)DATA/(DATA/SHIFT Key)(Less than 1 s.)DATA/(DATA/SHIFT Key)(Press at least 1 s.)8.7.4 Limiting Servomotor Speed during Torque ControlDuring torque control, the servomotor is controlled to output the specified torque, which means that the servomotorspeed is not controlled. Accordingly, when an excessive reference torque is set for the mechanical loadtorque, it will prevail over the mechanical load torque and the servomotor speed will greatly increase.This function serves to limit the servomotor speed during torque control to protect the machine.With No Speed LimitWith Speed LimitMotor speedMaximum speedDanger of damage due toexcessive machine speed.Motor speedSpeed limitSafe operation withspeed limit.(1) Speed Limit Mode Selection (Torque Limit Option)ParameterDescriptionPn002 n.0 Uses the value set in Pn407 as the speed limit (internal speed limit function).n.1Uses V-REF (CN1-5, 6) as an external speed limit input. Applies a speed limit using the inputvoltage of V-REF and the setting in Pn300 (external speed limit function).8-64