Search found 191 matches

by ashesman
Tue Aug 03, 2021 4:46 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: Actualizacion EMCO VCM 300
Replies: 57
Views: 1149

Re: Actualizacion EMCO VCM 300

I just spent eight months battling with servo motors and drives. There is no eneral purpose servo drive available that is cost effective. All the lower cost options are motor and drive pairs with proprietary encoders. Like delta and DMM. I would go with three phase drives. If you go single phase you...
by ashesman
Mon Aug 02, 2021 3:17 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: Actualizacion EMCO VCM 300
Replies: 57
Views: 1149

Re: Actualizacion EMCO VCM 300

You need a braking resistor or dc bus stabilizer to achieve high speed deceleration. I run 300ms to 6000 rpm and the same to stop but that's with a small motor. Even a few seconds might be a big ask without a resistor. Maybe there is one on the old drive you could use. Bit it will meed to be the rig...
by ashesman
Sun Aug 01, 2021 3:15 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: How to make axis acceleration faster?
Replies: 2
Views: 40

Re: How to make axis acceleration faster?

cncsnw wrote: Sun Aug 01, 2021 11:53 am On the PID Configuration screen, reduce the Accel Time values.

That is the time, in seconds, that the axis will take to accelerate to, or decelerate from, the Max Rate that you set on the Machine Configuration -> Jog Parameters table.
Perfect, thanks.
by ashesman
Sun Aug 01, 2021 3:56 am
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: How to make axis acceleration faster?
Replies: 2
Views: 40

How to make axis acceleration faster?

How do you make axis acceleration faster? The default value is quite sluggish. I tried changing the values in the jog settings but they didn't seem to change acceleration. I tried parameter 231 and it didn't help but then later realised it was for smoothing! I don't know if it is the Oak or DYN4 lim...
by ashesman
Wed Jul 28, 2021 3:41 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: Actualizacion EMCO VCM 300
Replies: 57
Views: 1149

Re: Actualizacion EMCO VCM 300

If your VFD has two encoder inputs then use both. If it has only one then you need to use the spindle encoder. Due to the gear ratio, to do orientation, you need to measure at the spindle shaft. There could be multiple turns or part turns of the motor to the spindle so stopping the motor in a fixed ...
by ashesman
Tue Jul 27, 2021 3:27 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: Actualizacion EMCO VCM 300
Replies: 57
Views: 1149

Re: Actualizacion EMCO VCM 300

You won't know about a braking resistor until you try decelerate the motor from full speed. You will need to watch the DC bus voltage during acceleration and make sure it is staying below the limit. The drive will fault if the limit is reached. If you have a gearbox then you must know the ratio. Esp...
by ashesman
Mon Jul 26, 2021 3:15 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: Actualizacion EMCO VCM 300
Replies: 57
Views: 1149

Re: Actualizacion EMCO VCM 300

You need to connect like the first image as you have differential signals. The number of encoder counts is not a setting you try different values for. It needs to be correct. Dont rush to try get orientation working. Get the motor control sorted properly first. Once it is all set up and tuned then w...
by ashesman
Fri Jul 23, 2021 4:33 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: Actualizacion EMCO VCM 300
Replies: 57
Views: 1149

Re: Actualizacion EMCO VCM 300

tblough wrote: Fri Jul 23, 2021 4:24 pm
ashesman wrote: Fri Jul 23, 2021 3:59 pm ...If your direction of rotation you measure is wrong then swap the A wires...
Swap the A wires with the B wires.
Or just swap either of the wires in a pair, the result will e the same electrically.
by ashesman
Fri Jul 23, 2021 3:59 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: Actualizacion EMCO VCM 300
Replies: 57
Views: 1149

Re: Actualizacion EMCO VCM 300

If page 61 is the correct one for your encoder then U0 is Z, U1 is A and U2 is B. Connect 5V and Ground and the six encoder wires. If your direction of rotation you measure is wrong then swap the A wires. Although most drives have a function to swap direction of the encoder RPM. Get it working in op...
by ashesman
Thu Jul 22, 2021 2:48 pm
Forum: Centroid Oak, Allin1DC, MPU11 and Legacy products
Topic: Actualizacion EMCO VCM 300
Replies: 57
Views: 1149

Re: Actualizacion EMCO VCM 300

From Baumuller: "“VDOK Motors are very old and discontinued for a long time. This motor is asynchronous motor equipped with incremental encoder and analog tach generator. This motor used to be driven by old analog active power units and drive BUC/BUH 4. It is possible to drive this motor with ...