I just got my new G540 wired up today (the Z axis anyways), and I decided to try it out to get the direction of the stepper right before soldering it up.
Using LinuxCNC, and using the G540 defaults that come with it, my motor would stall out about half of the time and turn very slowly otherwise.
The mill is a Zen Toolworks with the NEMA 23 motors. Here are the specs on the motors:
Model # : 57BYGH41-401
Resolution/Step Angle : 1.8°
Phases : 2
RPM : 3000
Voltage : 3.64VDC
Amperage : 1.5A
Leads (Wires) : 4 Leads
Phase Current : 0.4A
Winding Resistance : 2.7 Ohm
Inductance : 5.6 mH
Holding Torque : 69 oz/in. | 5.0 kgf/cm
Wiring Details
Four wires with the following color pattern:
Red : Phase A (A+)
Blue : Phrase A Return (A-)
Green : Phase B (B+)
Black : Phase B Return (B-)
For my current sense resistors, I chose 390 ohm resistors (the math specs 400 ohms, so I should be good). I have a 24 VDC 15A Regulated Switching Power supply. Not sure how clean it is, but it worked fine with my old Chinese setup on the same mill.
I decided to switch to the G540 since the Chinese gear I had was nothing but a PITA. However, it was working so I know that my motors and my power supply are fine.
I haven't tweaked the trim pots (AKA Gecko Volume Control), since I figured that it should run regardless of that setting.
I chose 400 ohms based on phase current, was I supposed to use the 1.5A rating instead? (meaning replace the 400 ohm resistors with 1.5k ones).
Call me crazy, but I used RadioShack S-video High Flex Dual Zip Cable (part #278-0470) to connect the motors. It's high flex, so it will last foreve. And by using the shields as conductors, as well as the core, I get four decent sized wires for my motors. I used about 6 feet for each motor cable.
I *do* have my config file somewhat screwed up, but I was just after direction anyways. Right now I'm concerned about the lack of torque.
Any thoughts?
Thanks!
Using LinuxCNC, and using the G540 defaults that come with it, my motor would stall out about half of the time and turn very slowly otherwise.
The mill is a Zen Toolworks with the NEMA 23 motors. Here are the specs on the motors:
Model # : 57BYGH41-401
Resolution/Step Angle : 1.8°
Phases : 2
RPM : 3000
Voltage : 3.64VDC
Amperage : 1.5A
Leads (Wires) : 4 Leads
Phase Current : 0.4A
Winding Resistance : 2.7 Ohm
Inductance : 5.6 mH
Holding Torque : 69 oz/in. | 5.0 kgf/cm
Wiring Details
Four wires with the following color pattern:
Red : Phase A (A+)
Blue : Phrase A Return (A-)
Green : Phase B (B+)
Black : Phase B Return (B-)
For my current sense resistors, I chose 390 ohm resistors (the math specs 400 ohms, so I should be good). I have a 24 VDC 15A Regulated Switching Power supply. Not sure how clean it is, but it worked fine with my old Chinese setup on the same mill.
I decided to switch to the G540 since the Chinese gear I had was nothing but a PITA. However, it was working so I know that my motors and my power supply are fine.
I haven't tweaked the trim pots (AKA Gecko Volume Control), since I figured that it should run regardless of that setting.
I chose 400 ohms based on phase current, was I supposed to use the 1.5A rating instead? (meaning replace the 400 ohm resistors with 1.5k ones).
Call me crazy, but I used RadioShack S-video High Flex Dual Zip Cable (part #278-0470) to connect the motors. It's high flex, so it will last foreve. And by using the shields as conductors, as well as the core, I get four decent sized wires for my motors. I used about 6 feet for each motor cable.
I *do* have my config file somewhat screwed up, but I was just after direction anyways. Right now I'm concerned about the lack of torque.
Any thoughts?
Thanks!