[oldcrowe]

Now I've done it!

So- I just simply felt I needed to update my 30-year old shop-built CNC router. I noticed 2 motors losing steps recently, decided to buy 3 new motors (23HS33-4008D) ... and while I'm at it, let's upgrade the power supply to 48 volts, and I'll need new drivers to handle the 5.2 amps the new motors can pull. So I installed the new motors, and the system worked fine with the old power supply and drivers...

Today I installed the new power supply (HJS-480-0-48) and the new drivers (DM556T). I took pics of the old power supply and driver wiring and made sure new power supply and drivers wired properly. Checked driver DIP switch settings and got them where they should be. Driver LEDs light up like they are happy. But none of the motors move when commanded to. They do, however, lock. Cannot turn the shaft (easily) when the system is on.

So- went back and checked DIP switch settings- I have them set at 16 microsteps (which I will change back to 8 when I get this problem sorted out...), 5.6 amps (See pic). I traced the step and direction wires from the drivers to the BOB- all in correctly. I have 48 volts at the drivers. I have my steps per set at 16,000 (actually 16,290ish).

I'm wondering if, with these new drivers, I need to change anything in config/ports and pins? I assumed (I know, I know...) that the settings in Mach3 would be the same...

Any suggestions would certainly be appreciated! Thanks so much for your time!

OC

[cncmakers001]

Now I've done it!

So- I just simply felt I needed to update my 30-year old shop-built CNC router. I noticed 2 motors losing steps recently, decided to buy 3 new motors (23HS33-4008D) ... and while I'm at it, let's upgrade the power supply to 48 volts, and I'll need new drivers to handle the 5.2 amps the new motors can pull. So I installed the new motors, and the system worked fine with the old power supply and drivers...

Today I installed the new power supply (HJS-480-0-48) and the new drivers (DM556T). I took pics of the old power supply and driver wiring and made sure new power supply and drivers wired properly. Checked driver DIP switch settings and got them where they should be. Driver LEDs light up like they are happy. But none of the motors move when commanded to. They do, however, lock. Cannot turn the shaft (easily) when the system is on.

So- went back and checked DIP switch settings- I have them set at 16 microsteps (which I will change back to 8 when I get this problem sorted out...), 5.6 amps (See pic). I traced the step and direction wires from the drivers to the BOB- all in correctly. I have 48 volts at the drivers. I have my steps per set at 16,000 (actually 16,290ish).

I'm wondering if, with these new drivers, I need to change anything in config/ports and pins? I assumed (I know, I know...) that the settings in Mach3 would be the same...

Any suggestions would certainly be appreciated! Thanks so much for your time!

OC

Double-check the Step Pulse Time and Dir Pulse Time in Mach3
Especially since the new drivers are likely more sensitive to timing than the old ones

[oldcrowe]

ok- checked that, driver manual says no less than 2.5uS, I have mine set at 5...still no go...:whine:

[oldcrowe]

So, an update... I decided to put one of the old drivers in one axis... and it worked fine. So, the PC, Mach3, the controller, the power supply, the wiring, and the BOB are working fine. It seems to me that only leaves the NEW drivers! Unless I have a problem wiring them... but I have gone over it a dozen times... or a setting in Mach3...

[oldcrowe]

OK, so consious-sail-8690 on Reddit just came up with the fix for the problem: the controller output is 5V, the drivers are default set at 24V. Switched them to 5V- working as they should!!

[routalot]

Thanks for recording the action that worked,Somebody may come along in future and benefit from you kindly sharing the solution.