I, ve three nos motor having 200kw each whose are running by simens master drive using master slave techniques. Each motor have encoder but I want to use only one encoder in master motor. Is it possible. If possible how can I do?
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.
Under my supervision there is a master slave ABB drive, In that AI is coming from PLC, and master, slave VFD's are communicated by FO cable and here is no speed reference encoder fixed in motor to get the actual speed of motor to feed to master drive. I want to know how master slave drive works in my case.
Sir if I keep master in speed mode and slave in torque mode then what will happen and also master motor encoder feedback and slave encoder feedback connection detail
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.
Hi Sir I Have a heavy cylindrical mass of 10000 N-m Torque required to drive, can I use 5000 N-m and 5000 N-m like master and slaver with 100% of motor rated torque to drive heavy mass ? Please suggest
Sir in Manuals it is written that if the motor shafts of Master and followers are solidly coupled so that no speed difference is possible between them .in this case follower has to be Torque controlled not speed controlled ...Why is it so in case follower is speed controlled what will happen ?
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.
IN OUR PLANT WE HAVE A MOTOR 2000KW ID FAN AND DRIVEN BY MASTER FOLLOWER TYPE METHOD FROM SIMENS VFD . BUT IT SUPPYES SAME MOTOR BUT HAS 6 TERMINALS . MASTER 3 AND SLAVE 3 . MAY BE IT IS THE PRODUCING EFFECT OF 2 MOTORS COUPLED TOGETHER . IS IT SO ??
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.
Multiplying factor how to calculate While load sharing.why torque per set in drive -300 per to +300per.one doubt if motor are of different ratings kw how load is shared.2.load sharing of 200nm will be 100 nm 100 nm. Or 150nm bigger motor ,50 nm smaller motor
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.
Sir, torque reference se slave vfd speed kaise attain ya achive karti hai, difference kya hai speed reference and torque reference mei in case of slave vfd???
Beam type but movable so X axis have two servo one is master and other slave one . I have issues in slave to many time 2mm to 3mm cross head offset because of slave Please tell me how to control both servo same position same turn same timing . Servo SGM7G-30A7C61 yaskawa sigma7
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..
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.
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..
nice video sir.I have a doubt.How load sharing is being occured within two motors?Is that always 50%-50% load sharing again if a master of load sharing mode become free then what will be the effect on slave. sir kindly clear my all the above written doubts.
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...
Sir ThankQ & God Bless you
I can't understand a word but I actually got the information I was looking for. Thank you.
Very simple and effective teaching very nice video
Thanks a lot
THANK YOU SIR AAPSE THUKKADE THUKKADOME HUM SEEKRAHA HAI .. AAP EXPERT HO SURE
Sir DBR k Baare mai Video banao aur DBR selection kese karte hai oos k baare mai bhi video banao.
Thank u sir for your valuable information.
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
Please explain without vfd master and follower for conveyor belt with fuild coupling
Sir we use dancer pot on slave one aur more drives plz explain
Please tell me about sponge iron plant dc drive master slaver operation.I have more doubt.please help me
I, ve three nos motor having 200kw each whose are running by simens master drive using master slave techniques. Each motor have encoder but I want to use only one encoder in master motor. Is it possible. If possible how can I do?
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.
Under my supervision there is a master slave ABB drive, In that AI is coming from PLC, and master, slave VFD's are communicated by FO cable and here is no speed reference encoder fixed in motor to get the actual speed of motor to feed to master drive. I want to know how master slave drive works in my case.
Abb drives have DTC feature which enables them to control the torque without encoder feedback.and speed is estimated.
Please explain more on vfd syncronisation. It is more usefull in industry
sure I'll make more videos on this topic
Love you sir thank you..
Sir if I keep master in speed mode and slave in torque mode then what will happen and also master motor encoder feedback and slave encoder feedback connection detail
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.
Thank you Its very for new industry job asspriant
Hi Sir
I Have a heavy cylindrical mass of 10000 N-m Torque required to drive, can I use 5000 N-m and 5000 N-m like master and slaver with 100% of motor rated torque to drive heavy mass ? Please suggest
yes you can use 2 motors,
Please explain tension control in process lines
Sir Any video by you On DTC and Flux vector control ?
Brilliant Explanation
Sir in Manuals it is written that if the motor shafts of Master and followers are solidly coupled so that no speed difference is possible between them .in this case follower has to be Torque controlled not speed controlled ...Why is it so in case follower is speed controlled what will happen ?
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?
IN OUR PLANT WE HAVE A MOTOR 2000KW ID FAN AND DRIVEN BY MASTER FOLLOWER TYPE METHOD FROM SIMENS VFD . BUT IT SUPPYES SAME MOTOR BUT HAS 6 TERMINALS . MASTER 3 AND SLAVE 3 . MAY BE IT IS THE PRODUCING EFFECT OF 2 MOTORS COUPLED TOGETHER . IS IT SO ??
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.
How accurate the synchronization of motors in terms RPM FRACTION
sir please make video on drive four quadrant operations and its application
I want the parameter setting for master ans follower drive acs550 and wiring connection pls help me
Multiplying factor how to calculate
While load sharing.why torque per set in drive -300 per to +300per.one doubt if motor are of different ratings kw how load is shared.2.load sharing of 200nm will be 100 nm 100 nm. Or 150nm bigger motor ,50 nm smaller motor
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.
Mera master flower sahi se nahi kam kar raha hai or trip ho raha hai dc over voltas possible solution kya ho sakta hai
Sir, torque reference se slave vfd speed kaise attain ya achive karti hai, difference kya hai speed reference and torque reference mei in case of slave vfd???
Sir how to connect accl and deaccl push button in vfd
you can use digital input to select accel and decell selection
SR plz motorised valve पर bhi ek video banaiye
Beam type but movable so X axis have two servo one is master and other slave one . I have issues in slave to many time 2mm to 3mm cross head offset because of slave
Please tell me how to control both servo same position same turn same timing .
Servo SGM7G-30A7C61 yaskawa sigma7
Sir paler plant me tension on/off ke bare me batye
Sir, master vfd ki analog output se ham 3 slave drive chla sakte h, torque mode me
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
Can we do the M/S without closeloop i mean on V/F mode?
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.
Sir bina plc ke bina bi Joo jata Hai
Han possible hai but scaling ka problem aata hai isliye plc k through hi mostly kiya jata hai
In this case both motor starts simultaneously or the master motor will start first sir ??
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..
good
Plz tell me DC drive with 4 quadrant
Reverse forward slave command video
👍
Sir Take your fees to improve our skill.
nice video sir.I have a doubt.How load sharing is being occured within two motors?Is that always 50%-50% load sharing again if a master of load sharing mode become free then what will be the effect on slave.
sir kindly clear my all the above written doubts.
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.
Please give us more training ....
sure i will continue
👍👍👍👍👍
Nice video, pity that is not on English...
Grab & Hoist crane load sharing with VFD application.
thanks sir
I have larg size vmc machine 4000mm x 3000mm
Hi sor
Hi sir
hello
Pid
Hi sir