Rockwell-automation 1560E SMC Flex Smart Motor Controller Manual de usuario descargar pdf (Pagina 17)

Product Overview 1-7

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Linear Speed Acceleration and Deceleration

The SMC-Flex has the ability to control the motor speed during starting

and stopping maneuvers. A tachometer signal (0 to 5V DC) is required to

perform this start mode. The start time is selectable from 0 to 30 seconds

and determines the time the motor will ramp from 0 speed to full speed.

Kickstart is available with this option.

Motor

Speed

100%

Time (seconds)

Start

Run Stop

Motor

Speed

100%

Time (seconds)

Start

Run Stop

Figure 1.7 – Linear Speed Acceleration

Linear deceleration does not need to be used, even if linear acceleration is

used. The stop time can be programmed for 0 to 60 seconds. Linear

deceleration cannot brake the motor/load and reduce the stop time.

Note: Consult factory if settings over 30 seconds are required. The base

rating of the MV SMC-Flex is two starts (or one start/stop combination)

per hour, thirty seconds maximum for each operation. A stopping operation

counts as a start for purposes of thermal capacity calculations.

Linear Deceleration is not intended to be used as an

emergency stop. Such usage may result in severe injury

or death. Refer to the applicable standards for

emergency stop requirements.

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Rockwell-automation 1560E SMC Flex Smart Motor Controller Manual de usuario Pagina 17