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Re: Actualizacion EMCO VCM 300
Posted: Sun Mar 17, 2024 4:52 pm
by ashesman
It's just three sets of motor ratings. You could use any of them. You could use the lower frequency data for the rated values and set max frequency to the highest. But using the upper set if you intend to run it at the upper range is probably most accurate.
Your problem is over current error during braking. So, as I have mentioned many times before, you need to diagnose this by watching the motor current during deceleration and see if it is exceeding any limit setting or a drive maximum. The easiest way to do this is using the pc software.
Of course, if the drive is misconfigured then you could also have some problems, but if you are getting fast acceleration, accurate speed control and good load performance then it is probably set up correctly.
Re: Actualizacion EMCO VCM 300
Posted: Sun Mar 17, 2024 5:25 pm
by Oscar6
ashesman wrote: ↑Sun Mar 17, 2024 4:52 pm
It's just three sets of motor ratings. You could use any of them. You could use the lower frequency data for the rated values and set max frequency to the highest. But using the upper set if you intend to run it at the upper range is probably most accurate.
Your problem is over current error during braking. So, as I have mentioned many times before, you need to diagnose this by watching the motor current during deceleration and see if it is exceeding any limit setting or a drive maximum. The easiest way to do this is using the pc software.
Of course, if the drive is misconfigured then you could also have some problems, but if you are getting fast acceleration, accurate speed control and good load performance then it is probably set up correctly.
Ok, I'm not going to investigate further until I connect to a PC for diagnostics, tomorrow they will give me a USB to RS485 adapter, is there a link to make that cable for RJ45, where I can get the software.
Re: Actualizacion EMCO VCM 300
Posted: Sun Mar 17, 2024 5:57 pm
by ashesman
Download for free from the delta website.
Note that some of those rs-485 cables require resistors to be wired between 5v/gnd and the a/b signals. Check the manual for the adapter you get.
Re: Actualizacion EMCO VCM 300
Posted: Sun Mar 17, 2024 6:12 pm
by Oscar6
ashesman wrote: ↑Sun Mar 17, 2024 5:57 pm
Download for free from the delta website.
Note that some of those rs-485 cables require resistors to be wired between 5v/gnd and the a/b signals. Check the manual for the adapter you get.
The adapter they will give me has 4 outputs, gnd, 5v, trx+, trx-. Which RJ45 pins should I connect them to?
Re: Actualizacion EMCO VCM 300
Posted: Sun Mar 17, 2024 6:46 pm
by ashesman
Look in the C2000 manual, it has a picture. You only need to co next + and -. Its not a bad idea to also connect gnd but 5v is not required.
Re: Actualizacion EMCO VCM 300
Posted: Sun Mar 17, 2024 6:57 pm
by Oscar6
ashesman wrote: ↑Sun Mar 17, 2024 6:46 pm
Look in the C2000 manual, it has a picture. You only need to co next + and -. Its not a bad idea to also connect gnd but 5v is not required.
I have seen a photo of the RJ45 connector but there are duplicate signals, 3 and 6 ground and 4 and 5 sg+, I have to duplicate them also on the RS485 output.
Re: Actualizacion EMCO VCM 300
Posted: Sun Mar 17, 2024 8:39 pm
by ashesman
They often have duplicate signals to allow daisy chaining or fitting a terminating resistor. You should only need to connect up one of each signal. I will try to remember to find my cable tonight and send wiring.
Re: Actualizacion EMCO VCM 300
Posted: Mon Mar 18, 2024 2:26 am
by ashesman
I found a picture from when I made my cable and a photo of my cable. Don't laugh at my wiring, I made it in a hurry one night!
The heatshrink contains resistors required to bias the RS-485 driver. Some cables need them and some have them built in. For example older FTDI drivers (very commonly used) require 750 Ohm resistors between + and 5V, and between - and Gnd.
Re: Actualizacion EMCO VCM 300
Posted: Mon Mar 18, 2024 10:40 am
by Oscar6
ashesman wrote: ↑Mon Mar 18, 2024 2:26 am
I found a picture from when I made my cable and a photo of my cable. Don't laugh at my wiring, I made it in a hurry one night!
The heatshrink contains resistors required to bias the RS-485 driver. Some cables need them and some have them built in. For example older FTDI drivers (very commonly used) require 750 Ohm resistors between + and 5V, and between - and Gnd.
20240318_190003.jpg
20240318_185900.jpg
Hello, I'm not laughing at your cable, if it works it's fine. I'll make the connections and try to see what happens, thanks for the information.
Re: Actualizacion EMCO VCM 300
Posted: Mon May 06, 2024 6:11 pm
by Oscar6
Hello again, today I received an rs-485 controller and I have been able to do several tests, I have detected the error whereby it was impossible to brake the spindle in less than 10 seconds, now I can brake in 3 seconds without problems, there was an error in parameter 05-05 of the variator had a value of 7.5 amps and that is why it failed, now I have a value of 14 amps, I don't know if it will be the correct value for my motor or I have to set another value, I don't know what to do, but I think 3 seconds is fine, thank you