Setting the Steppers current for MeCreator2 ? (A4988)

Post Reply
redirect303
Posts: 14
Joined: Sat Jun 29, 2019 2:34 am

Setting the Steppers current for MeCreator2 ? (A4988)

Post by redirect303 » Thu Jul 11, 2019 5:19 am

Hi, My printer MeCreator2 is equipped with a variety of motors and each of them has different nominal current:

The motors are as follows:
X - 42SHD 0217-24F ... Current = 1.5A
Y - 42SHD 0034-20B ... Current = 1.0A
Z - 42HS3418-305N8 ... ???
E - N42HS3418-24B22... ???


For the Z and E motors I could not find any specs, so I don't know their nominal current.

Also, the Drivers seem to be A4988, how do I calculate the current based on Vref on this drivers? I cannot see the resistor value because of the heatsink on top.

Please advise with the following:
- Nominal Current for Z and E motors
- Current calculation formula for A4988

Thank you.

User avatar
William
Site Admin
Posts: 4355
Joined: Tue Jun 07, 2016 9:38 am

Re: Setting the Steppers current for MeCreator2 ? (A4988)

Post by William » Thu Jul 11, 2019 9:46 am

Hi, the D42HS3418-24B22 current is 1.68A,and the A4988 calculation method you can refer to this:I_TripMax= Vref/(8*Rs) (The general range is 0.8-1.2V)
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

redirect303
Posts: 14
Joined: Sat Jun 29, 2019 2:34 am

Re: Setting the Steppers current for MeCreator2 ? (A4988)

Post by redirect303 » Thu Jul 11, 2019 2:27 pm

What is the value of Rs for this driver? Can't see it because of the aluminium radiator. I don't want to remove it, because i am worried it won't stick back.

What about the Z axis motor current value?

Thanks.

User avatar
William
Site Admin
Posts: 4355
Joined: Tue Jun 07, 2016 9:38 am

Re: Setting the Steppers current for MeCreator2 ? (A4988)

Post by William » Thu Jul 11, 2019 2:43 pm

Hi, you can refer to this: https://www.allegromicro.com/en/Product ... vers/A4988
And the z motor current is 1.5A.
-Keep your mind and try to test it. :)
-Everything will be fun!-Support all Getech printer.
-You can ask me the questions and I will kindly reply.
-Respect others is the best way you can get help!

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests