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

8.7 Operating Using Torque Control(2) Internal Speed Limit FunctionPn407Speed Limit During Torque ControlTorqueSetting Range Setting Unit Factory Setting Setting Validation0 to 10000 min -1 10000 ImmediatelySets the servomotor speed limit value during torque control.The setting in this parameter is enabled when Pn002 = n.0.The servomotor’s maximum speed will be used when the setting in this parameter exceeds the maximum speed of the servomotorused.(3) External Speed Limit FunctionTypeSignalNameConnectorPin NumberNameInput V-REF CN1-5 External Speed Limit InputSG CN1-6 Signal GroundInputs an analog voltage reference as the servomotor speed limit value during torque control.The smaller value is enabled, the speed limit input from V-REF or the Pn407 (Speed Limit during Torque Control) whenPn002 = n.1.The setting in Pn300 determines the voltage level to be input as the limit value. Polarity has no effect.Pn300Speed Reference Input GainSpeed Position TorqueSetting Range Setting Unit Factory Setting Setting Validation150 to 3000(1.50 to 30.0 V/rated speed)0.01 V/rated speed 600(6.00 V/rated speed)ImmediatelySets the voltage level for the speed that is to be externally limited during torque control.With Pn300 = 600 (factory setting) and 6 V input from V-REF (CN1-5, 6), the actual motor speed is limited to the ratedspeed of the servomotor used.INFO• The Principle of Speed LimitingWhen the speed is outside of the allowable range, a torque that is proportional to the difference between the actual speedand the speed limit is used as negative feedback to bring the speed back within the speed limit range. Accordingly, there isa margin generated by the load conditions in the actual motor speed limit value.(4) Signals Output during Servomotor Speed Limit8TypeSignalNameConnectorPin NumberOutput /VLT Must be allocatedCN1-SettingON (low level)OFF (high level)MeaningServomotor speed limit being applied.Servomotor speed limit not being applied.This signal is output when the servomotor speed reaches the speed limit value set in Pn407 or set by the analog voltage reference.For use, this output signal must be allocated with parameter Pn50F. For details, refer to 7.3.3 Output Circuit Signal Allocation.8-65