[Blocheren]

Hi. I just changed my stepper and driver for my z axis. It's a grblhal machine. The new driver is a hbs57h closed loop.. The problem is that I can't get it to move. I get a small twist in the engine and the goes in fault in the driver with 7 flashes.. I hope for help! ????

[cncmakers001]

Hi. I just changed my stepper and driver for my z axis. It's a grblhal machine. The new driver is a hbs57h closed loop.. The problem is that I can't get it to move. I get a small twist in the engine and the goes in fault in the driver with 7 flashes.. I hope for help! ????

The new driver is not the same with the old driver?
If so they might not be compatible.

[hfjbuis]

In general, closed loop drivers can draw more current than open loop drivers. A second cause could be that the settings on the closed loop driver are a bit optimistic and that the driver can't get to that speed and/or acceleration. A third cause could be that the driver setup does not match the setup of grblHAL. Your driver setting must be equal but preferably "faster" than the grblHAL settings.
Looking up the error (led flashing 7 times) could also indicate the cause of the error.