Telemecanique Altivar 56 manual - Northern Industrial

Bulletin No. 50006-519-01BChapter 5 — ConfigurationDecember 1996 7 → General Configuration MenuControlled Stop CommandMethods (continued)Run Forward10Controlled StopLIx ActiveState low10fFrequency OutputFigure 51: Fast Stop Timing Diagram (2-Wire Command)L1Run Enable10Run Forward10Controlled StopLIx ActiveState low10Frequency OutputfFigure 52: Fast Stop Timing Diagram (3-Wire Command)With fast stop, the drive controller decelerates as quickly as possible withoutcausing a nuisance trip. Figure 51 and Figure 52 illustrate timing sequence for FastStop.DC Injection BrakingWARNINGNO HOLDING TORQUE• DC injection braking does not provide holding torque at zero speed.• DC injection braking does not function during loss of power or drive controller fault.• When required, use separate brake function for holding torque.Failure to follow this instruction can result in death, serious injury, or equipmentdamage.CAUTIONMOTOR OVERHEATING AND DAMAGEApplication of DC injection braking for long periods of time can cause motor overheatingand damage. Protect motor from extended periods of DC injection braking.Failure to follow this instruction can result in injury or equipment damage.With DC Injection Braking, DC current is injected in the stator creating a stationarymagnetic pole which brakes the rotor. This method of braking produces maximumtorque at low frequencies.© 1996 Square D All Rights Reserved83ηττπ://νιχοντρολσ.χοm