Areeb

I wrote here by mistake It is correct in PLC but still cant receive the voltage 

Hi Everyone! Hope you are fine. I have a Machine which consist of Q series Mitsuibishi PLC and Mitsuibishi E700 VFD which is Connected with CC Link Module of PLC. 2 to 3 days ago one of the inverter becomes faulty so I replace it with another which is working fine but when I installed this VFD so its not going into run state however I have check and connected all the wiring but the main problem is this inverter in not going in Run mode and it is directly linked with CC Link cable and connected in parallel with other VFD. So my question is how can I solve this problem from where I will check ?? . And I have aslo Check all the signals coming from the PLC program. Please guide me in this Regards. I will be very thankful to you.   Thanks & Regards Areeb

Hi All, I m new in this platform I wanted to know that I have FX3U 16M PLC which is connected with encoder X0 & X1 input and the program is simple it output the pulses and give it to the servo amplifier so the servo motor runs according to the pulses generated. But the problem which I am facing from few days  is that servo motors runs perfectly fine but the tape which is running on the servo belt is not cut in exact position however before that it works fine and cut the tape in exact position. So my question is that how many output servo needs for that maybe some wire from plc output is broken ?

Currently in program there are 3 outputs given at the PLC side pulses output Y0 & Y1  and Y2 is digital output but physically there are 2 outputs connected with servo Y1 & Y2 so I  need to know is there is any output for positioning ??

Hi Everyone!  I wanted to determine the speed of my printing machine in meter per minute. The machine is very simple it consists of 2 roller one is unwinding the paper roll and 2nd is winding the paper roll and in between them printing process take place. I just wanted to determine how ma meter per minute machine is printing.   Thanks & Regards, M.Areeb

@Gambit I just assumed 800 increments for 1 meter of travel as an example. can u tell me that this strategy is right or wrong ?

@Inntele which type of sensor ? can u tell me the name of that sensors which is used to calculate the rpm and diameter of the shaft.

@glavanov Mitsubishi FX5U 

okay if I am not wrong u are saying that for instance my conveyor cover 1 meter in 800 increments and after 800 the encoder is reset and again calculate for 2nd third and so on till timer of 1 minute and after every 800 increment there will be increment of 1 count in counter so in this way after 1 mint it shows the speed in meter per minute ?

Circumference=2*pi*r =>   pi*d Speed(Meter/Mint)=  C*RPM; I just used the encoder only nothing else.

Till now I use incremental  encoder from which I got the RPM of the machine, now  after that I am confused. The idea is very simple is that I just wanted to know that on how many meter per minutes my machine is covering the paper roll in shaft.

If I multiply the circumference of the shaft with RPM so is it fine or not ?

can u further explain me by giving some sort of numerical base examples and  how I determine the scaling factor? 

Hi welcome to this forum. You can use these command in ladder programming. This will solve your task. >= D500 K3000  & <= D500 K3100     out m1000 >= D500 K3100  & <= D500 K3150     out m1001       Thanks & Regards, Areeb

Hi Everyone, I want to know some information regarding PLC which is installed in my machine.  SImens PLC: ET200S,       CPU: IM151-7   Please guide me which software with exact version is used for uploading and downloading the program from this PLC and I am facing some issue as the operator said that when he press the speed Decrement button it decreases the speed by one point (for example from 100 to 99,98,97...) and he need to press the button many times in order to stop the machine. As he said that previously  when he  press the button the speed decreased by 10 points (say from 100 to 90,80,70....). So my question is is it possible that this could happen itself or what might me the issue ??   Thanks  

Hi @abdoon89 . Few days ago I am also facing same type of problem as u mentioned but I must say that u should attached your motor and amplifier of same rating. This might solve your problem. 

Thanks Everyone, @panic mode I thing Your suggestion is really helpful for me. Thanks !

I only need the strategy for calculating the distance through pulses PLC is mitsubishi FX 3U and I have Delta DVP ES2 for testing.

Yes it is cutting and labeling machine. needed accuracy ?

I can explain my problem in this way. Suppose there is paper whose length is 300 mm and I need to label the tag  in the middle of the paper say 150 mm after every 1 rotation (360*/ 1000PPR) of the encoder. so here I need the distacne in millimeter from encoder to give the signal to my motor for label the tag.

@kaare_t U are absolutely right but I need the distance (mm) also to give the signal to my motor so that It can cut the paper at exact desired length. All I need to know is the distance in millimeter so that one can easily set the distance by using HMI.

@Gambit Yes I need to calculate the distance traveled by encoder, actually I used 1000 PPR encoder so wanted to used its pulses to calculate the distance so that I can give the signal to my motor at the desired length.