Hello.
I would like to find out if implementing a speed closed cotrol loop for an AC Motor is an adequate task for a Siemens S7-300 PLC, or if I should get me an AC Drive with speed control features instead and leave the PLC CPU available for other tasks.
I Know that In order to control the motor speed through the PLC (and using a standard 4-20mA AC Drive)I must feedback the motor´s speed using an encoder (or a Tacometer - speed transducer), if I use the encoder, should I use high speed digital input modules?
All help and suggestions are greatly appreciated.. I have done other kind of closed loops (PID) but never have done a speed control for an AC motor before.
Thank you,
SH4
I would like to find out if implementing a speed closed cotrol loop for an AC Motor is an adequate task for a Siemens S7-300 PLC, or if I should get me an AC Drive with speed control features instead and leave the PLC CPU available for other tasks.
I Know that In order to control the motor speed through the PLC (and using a standard 4-20mA AC Drive)I must feedback the motor´s speed using an encoder (or a Tacometer - speed transducer), if I use the encoder, should I use high speed digital input modules?
All help and suggestions are greatly appreciated.. I have done other kind of closed loops (PID) but never have done a speed control for an AC motor before.
Thank you,
SH4