EL7041 with stepper NEMA17
05 Mar 2018 16:28 #106963
by Noal
EL7041 with stepper NEMA17 was created by Noal
HI everybody
I'm using an EL7041 driver to control a nema17 stepper motor, the problem is that the stepper has a strong overheating during its operation and I can't understand what the problem is. does any of you have any ideas?
I'm using an EL7041 driver to control a nema17 stepper motor, the problem is that the stepper has a strong overheating during its operation and I can't understand what the problem is. does any of you have any ideas?
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- Todd Zuercher
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05 Mar 2018 17:46 #106967
by Todd Zuercher
Replied by Todd Zuercher on topic EL7041 with stepper NEMA17
I don't know anything about those drives, but did you set the max current? Do the drive have a step down or at rest current setting that you need to set?
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05 Mar 2018 20:00 #106970
by Allan
Replied by Allan on topic EL7041 with stepper NEMA17
Hello Noal
To control the current output of your motor terminals you can use
EtherCAT commands. These commands are entered at the
command line in a terminal window.
With the EtherCAT master running you can list the position of each
terminal on the bus using the command:
ethercat slaves
This command will list the position of each terminal on your bus.
Use this position in the commands below to address each terminal
which you wish to adjust by replacing the $ in each command with
the terminal’s position in the bus.
Read Maximum Motor Current (mA)
ethercat upload -p $ -t uint16 0x8010 0x01
Set Maximum Motor Current to 100 mA
sudo ethercat download -p $ -t uint16 0x8010 0x01 100
These parameters are detailed on page 196 of the PDF documentation for the EL7041.
You can set the current to any value between 0 and 5000 mA.
By the way, what is the current rating of your motors?
Allan
To control the current output of your motor terminals you can use
EtherCAT commands. These commands are entered at the
command line in a terminal window.
With the EtherCAT master running you can list the position of each
terminal on the bus using the command:
ethercat slaves
This command will list the position of each terminal on your bus.
Use this position in the commands below to address each terminal
which you wish to adjust by replacing the $ in each command with
the terminal’s position in the bus.
Read Maximum Motor Current (mA)
ethercat upload -p $ -t uint16 0x8010 0x01
Set Maximum Motor Current to 100 mA
sudo ethercat download -p $ -t uint16 0x8010 0x01 100
These parameters are detailed on page 196 of the PDF documentation for the EL7041.
You can set the current to any value between 0 and 5000 mA.
By the way, what is the current rating of your motors?
Allan
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05 Mar 2018 23:15 #107003
by andypugh
Stepper motors do get hot, especially when not moving.
Just how hot is it? Most of them are OK to more than 100C, and that is _very_ hot.
Replied by andypugh on topic EL7041 with stepper NEMA17
HI everybody
I'm using an EL7041 driver to control a nema17 stepper motor, the problem is that the stepper has a strong overheating during its operation and I can't understand what the problem is. does any of you have any ideas?
Stepper motors do get hot, especially when not moving.
Just how hot is it? Most of them are OK to more than 100C, and that is _very_ hot.
The following user(s) said Thank You: Noal
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06 Mar 2018 07:54 #107016
by Noal
Replied by Noal on topic EL7041 with stepper NEMA17
the current rating is 1,8A and i have already set it but the motor in this situation has few torque,the only way to increase the stepper torque is increase the current too, but in this way the heat increase. why?
is it possible that the drive is not suitable for this motor?
thank you
is it possible that the drive is not suitable for this motor?
thank you
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06 Mar 2018 11:59 #107028
by andypugh
Replied by andypugh on topic EL7041 with stepper NEMA17
How many wires does the motor have?
A NEMA 17 motor will never have very much torque, it's a small motor.
A NEMA 17 motor will never have very much torque, it's a small motor.
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06 Mar 2018 15:57 #107040
by Noal
Replied by Noal on topic EL7041 with stepper NEMA17
NEMA 17 is a bipolar motor for this has 4 wire,the wiring is correct.
his torque is anyway too low for this motor .
in my opinion this problem it's due to the some wrong parameters set in the drive el7041
thank you
his torque is anyway too low for this motor .
in my opinion this problem it's due to the some wrong parameters set in the drive el7041
thank you
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06 Mar 2018 16:50 #107045
by andypugh
Replied by andypugh on topic EL7041 with stepper NEMA17
I can't think of a driver setting that could make a stepper motor hot _and_ weak.
Not both at the same time.
Some motors have 6 or 8 wires, there are ways to connect those wrongly. No real scope for that with a 4-wire motor though.
Not both at the same time.
Some motors have 6 or 8 wires, there are ways to connect those wrongly. No real scope for that with a 4-wire motor though.
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06 Mar 2018 16:59 #107047
by Allan
Replied by Allan on topic EL7041 with stepper NEMA17
If you suspect a setting in your motor drive terminal you could reset it back to factory settings.
Perhaps you need larger motors to generate the torque you need?
Perhaps you need larger motors to generate the torque you need?
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06 Mar 2018 17:03 #107048
by Noal
Replied by Noal on topic EL7041 with stepper NEMA17
when i set the current max at 1,8A the stepper it is not hot but the torque is very low, if i try to increase the current the torque increase too, but also the temperature of stepper. The stepper with 1,8A shuold be have more torque (I'm sure of this)
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