🔴 MASTER FOLLOWER/ MASTER SLAVE TOPOLOGY &LOAD SHARING IN VFD/DRIVES (हिंदी में) 

Thanks a lot

welcome to my channel Rajat.keep in touch for more updates.. thanks for watching

@@aforautomation sir why you have stopped making videos ...kindly keep sharing the knowledge more frequently

sure I'll make more videos on this topic

Load sharing is done in percentage so no Matter what ever is Motor ratings percentage torque will be same

Vector control drive can achieve torque upto 300 %for few seconds,if at any point of time higher torque is required to keep the load at desired speed drive can handle.+300/-300 may be default value please check in your drive user manual.

sure i will continue

Abb drives have DTC feature which enables them to control the torque without encoder feedback.and speed is estimated.

yes you can use 2 motors,

very good question Load sharing is not always 50-50 it. most of the time its 100% suppose there is a load requiring torque of 100 kg-meter then total toruqe applied by the All master+slave will be 100kg-meter, and all the motor may not be of same power (kw), then we divide the load in all master and slave motors as per there torque capacity and share the total load to all the motor, we receive the actual torque of master motor in PLC and by multiplying with some factor like 0.90 to 0.999 we send this to slave drives as a torque reference. ..i will make one more video to clear your doubt...

Thank u sir......I got it.

Please make a video on this as you said

Sir,we are waiting for your next video regarding load sharing.

Slave motors torque should not be grater than master motor otherwise mechanical coupling will break, and if we keep slave motor in speed mode without any torque limit, slave motor may apply more torque to achieve its speed which may lead to coupling or shaft breakage, if we run slave motors in speed,the torque always should be limited with respect to master torque.master slave mode is choosen as per application requirements/ proces.

How we put torque limit in speed synchronisation mode and speed limit in load sharing mode?

both will start simultaneously because master slave is used for only speed and torque synchronisation and start command will come simultaneously from plc to both drives..

Removing encoder will create synchronisation problem between all four drives/Motor if any motor is running in torque control mode then encoder will be must. Without encoder feedback it is possible if you use DTC drives.

If you keep master is speed mode then slave will help master to maintain its set speed,means at higher load speed will not drop or deviate too much, encoder connection is always done with respective drives,,you can not connect encoder of master motor to slave or vise versa,it is only done if both motors shaft is mechanically coupled.

you can use digital input to select accel and decell selection

If i am getting right You want to say that both motor are connected with single drive? if yes then it is for synchronization of speed and torque of both motors.

Yes you can do but speed will never be sycronised properly.if your process doesn't demands very good accuracy you can do it. like some pumps should run at same speed or some fans should run at same speed.in case of processing line the material is not very flexible.in billets casting or thick plate or heavy wire rod mill motors doesn't use encoder they just run at same speed.

yes you can run.through PLC programming you will have to receive actual torque %of master drive and send to other drive as a torque reference in %.. suppose master drive torque%is 50 then you can send 50%torque reference to other or you can add some factor for load distribution..

@@aforautomation thanks sir

Han possible hai but scaling ka problem aata hai isliye plc k through hi mostly kiya jata hai

hello