Easydriver how to get it to work?
06 Oct 2017 15:21 - 06 Oct 2017 16:00 #100012
by Marcodi
Replied by Marcodi on topic Easydriver how to get it to work?
I got it to work, but the motor is trembling all the time and like singing...
Also I can only spin in one direction, no matter which direction I am jogging. Edit. I can make it turn both ways but only if I keep the pulse - on parport 2 and direction pin5 on dir+ and bring dir- to ground pin 22. So I need sourcing on direction and sinking on steps. That's strange isn't?
My power supply is 12v 5A on this driver it states 4A dc9-40v . So is this a problem?
I have been switching my cables to other coil and in changes the + and - on the coils. But the singing and trembling remains.
Also I can only spin in one direction, no matter which direction I am jogging. Edit. I can make it turn both ways but only if I keep the pulse - on parport 2 and direction pin5 on dir+ and bring dir- to ground pin 22. So I need sourcing on direction and sinking on steps. That's strange isn't?
My power supply is 12v 5A on this driver it states 4A dc9-40v . So is this a problem?
I have been switching my cables to other coil and in changes the + and - on the coils. But the singing and trembling remains.
Last edit: 06 Oct 2017 16:00 by Marcodi.
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06 Oct 2017 15:52 #100015
by andypugh
Replied by andypugh on topic Easydriver how to get it to work?
Well, you would expect the PWR LED to go on when you apply power.
Are you starting up LinuxCNC and taking it out of e-stop?
Are you starting up LinuxCNC and taking it out of e-stop?
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06 Oct 2017 16:01 #100016
by Marcodi
Replied by Marcodi on topic Easydriver how to get it to work?
I edited my previous post completely as I got it turning but some things remain strange
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06 Oct 2017 16:15 #100017
by andypugh
Replied by andypugh on topic Easydriver how to get it to work?
Never disconnect a motor from a drive with the drive powered up, it is an easy way to kill them.
What values did you use for step length?
What values did you use for step length?
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06 Oct 2017 18:56 #100026
by Marcodi
Replied by Marcodi on topic Easydriver how to get it to work?
Have been using the defaults. 5000, 5000, 20000, 20000
When going to 8 microsteps the trembling seems to stop. The singing when not rotating remains, but that might be the current going through it without spinning.
What remains unclear is the 5A power supply with the drivers set to 3.5A with the jumpers.
I wonder if that will break the drivers or not. And can I connect multiple drivers on a 12v 5A power supply?
Regards, stephane
When going to 8 microsteps the trembling seems to stop. The singing when not rotating remains, but that might be the current going through it without spinning.
What remains unclear is the 5A power supply with the drivers set to 3.5A with the jumpers.
I wonder if that will break the drivers or not. And can I connect multiple drivers on a 12v 5A power supply?
Regards, stephane
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06 Oct 2017 19:23 #100028
by andypugh
Replied by andypugh on topic Easydriver how to get it to work?
The current capacity of your PSU does not matter.
(Consider the current capacity of a wall outlet....)
12V is quite low. Typically you want to run a stepper at just short of the highest current the driver can manage, as this will give you better torque at high speeds. (This is due to back-emf, and the very high pole-count of stepper motors)
You can connect multiple drives to one PSU, but if all 3 drives are asking for 3.5A at the same time, there will be a problem.
But, it is very unlikely that they will all ask for full current at the same time.
(Consider the current capacity of a wall outlet....)
12V is quite low. Typically you want to run a stepper at just short of the highest current the driver can manage, as this will give you better torque at high speeds. (This is due to back-emf, and the very high pole-count of stepper motors)
You can connect multiple drives to one PSU, but if all 3 drives are asking for 3.5A at the same time, there will be a problem.
But, it is very unlikely that they will all ask for full current at the same time.
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22 Nov 2018 23:58 #121247
by ypahnu
Replied by ypahnu on topic Easydriver how to get it to work?
i did try this.. didn't work
im wondering the independent 5V should be connected to a 5v and series with pin 24 !?
i mesure the pin 24 and i go 4.something V.
i got all my jumper to OFF. works fine in GRBL
5000
5000
20000
20000
200 step/rev
32 or 8 or 2 or 1 ( none work )
really need help, even try to figure out my binary adress of the port.
( didn't use Jitter alot.. left it at 15000 since it's a 10 years old computer, got 23272 opening all kinds of software )
im wondering the independent 5V should be connected to a 5v and series with pin 24 !?
i mesure the pin 24 and i go 4.something V.
i got all my jumper to OFF. works fine in GRBL
5000
5000
20000
20000
200 step/rev
32 or 8 or 2 or 1 ( none work )
really need help, even try to figure out my binary adress of the port.
( didn't use Jitter alot.. left it at 15000 since it's a 10 years old computer, got 23272 opening all kinds of software )
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23 Nov 2018 16:26 #121256
by andypugh
Replied by andypugh on topic Easydriver how to get it to work?
Try "0" as the port address. That should use the first port found by Linux.
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23 Nov 2018 19:18 #121263
by rodw
You can safely have the total drive current about 40% more than the PSU. 5 amp is a bit low. About 7 amp you could get away with. I'm running 4 x 3.5 A drives (14A) on a 10 amp supply.
Replied by rodw on topic Easydriver how to get it to work?
What remains unclear is the 5A power supply with the drivers set to 3.5A with the jumpers.
You can safely have the total drive current about 40% more than the PSU. 5 amp is a bit low. About 7 amp you could get away with. I'm running 4 x 3.5 A drives (14A) on a 10 amp supply.
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23 Nov 2018 21:02 #121269
by tommylight
As simple rules for stepper systems:
-Use as high voltage as you can, it is very useful for getting more speed from motors.
-Do not go to the drives limit i.e. if drives is labelled for 50V i tend to use 36V on them. This is very important for cheap drives, expensive ones can handle even more than they are labelled for.
-Having a bigger power supply is always nice, so if you can afford a 15A one, go for it even if you need only 5A.
Replied by tommylight on topic Easydriver how to get it to work?
Well, that also depends on the power supply and motor voltage, if you are running at 50V dc from the power supply to the drives, motors are rated at 5A and 5V, theoretically you can use a 0.5A power supply without any issues, but due to losses it is advisable to use 30 to 40% over that.
What remains unclear is the 5A power supply with the drivers set to 3.5A with the jumpers.
You can safely have the total drive current about 40% more than the PSU. 5 amp is a bit low. About 7 amp you could get away with. I'm running 4 x 3.5 A drives (14A) on a 10 amp supply.
As simple rules for stepper systems:
-Use as high voltage as you can, it is very useful for getting more speed from motors.
-Do not go to the drives limit i.e. if drives is labelled for 50V i tend to use 36V on them. This is very important for cheap drives, expensive ones can handle even more than they are labelled for.
-Having a bigger power supply is always nice, so if you can afford a 15A one, go for it even if you need only 5A.
Please Log in or Create an account to join the conversation.
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