Telemecanique Altivar 56 manual - Northern Industrial

Chapter 5 — ConfigurationBulletin No. 50006-519-01B7 →General Configuration Menu December 1996Controlled Stop CommandMethods (continued)When Frequency Threshold/Logic Input is selected and the drive controller is inTerminal Command mode, controlled stopping is active both at the frequencythreshold and with the logic input. When the drive controller is in KeypadCommand mode, controlled stopping by frequency threshold is active, butcontrolled stopping by logic input is disabled.At the first command to stop, the drive controller stops following the selectedcontrolled stop method (Freewheel Stop, Fast Stop, or DC Injection Braking). If theother command to stop is given, the drive controller will only stop following thecontrolled stop method corresponding to the second command if the method haspriority as compared to the first method. The order of priority is: Freewheel Stop,Fast Stop, DC Injection Braking.Freewheel Stop1Run Forward0Controlled Stop 1LIx ActiveState High 0Motor SpeedfFigure 49: Freewheel Stop Timing Diagram (2-Wire Command)LI1Run Enable10Run Forward10Controlled StopLIx ActiveState High10Motor SpeedfFigure 50: Freewheel Stop Timing Diagram (3-Wire Command)With Freewheel Stop, the drive controller output is turned off and the motor coaststo a stop. Figure 49 and Figure 50 illustrate the timing sequence for Freewheel Stop.Fast StopWARNINGEXTENDED STOPPING TIMEDeceleration time during fast stop may be automatically extended depending onbraking ability of drive controller. A dynamic brake or mechanical stopping/holdingbrake may be required for consistent stopping times independent of motor loadconditions. Fast Stop does not function during loss of power or drive controller fault.Failure to follow this instruction can result in death, serious injury, or equipmentdamage.82 © 1996 Square D All Rights Reservedηττπ://νιχοντρολσ.χοm