Teknic Clearpath Hard Stop Homing Setup

[Joey]

Hey Joey,

Did a fresh install, manually entered the settings in the wizard and nothing changed

swapped out the MPG6 with the MPG4, both with fresh batteries, same.
Tried different usb ports, no difference. Also not getting any error messages.
Must be one of those pesky Germlin's

Bill
report_0008DC111213-1005220063_2023-09-15_23-38-47.zip

Was able to Replicate this morning. Zeroing in on it now. Looks like its related to the WMPG-6 and the W Axis.

Thanks for the Reports and Help Bill

[vustasmith]

Clearpath motors can be configured to home each time they are enabled or only one time per power on. If the second option is selected and all motors are powered on at the same time, you could sequence the enabling so that the Z drive was enabled first to move the cutter up and away from the table, and then enable X and Y drives after the Z is out of the way.

I'm still using steppers on my little Taig mill. If I ever get around to connecting the Clearpath servos to that mill, I'll configure the motors and the wiring to use hard-stop homing with the Z-axis set to home first and then the X and Y axes later.

Hello Mike, kindly give details on how to go about sequencing the enabling of the clearpaths motors on the MSP software.
Let me explain what happened to me recently. I have a Mechmate CNC router. It was making some cut on wood and I pressed the E-stop button. when the e-stop was released C12 prompted to home the machine. since the cutting bit was still embedded in the wood, and all 3 axis moved simultaneously, the bit was broken.
the problem i have is that if there is a power cut or and e-stop event, i may surely lose more router bits.
I am asking on the procedure on how to first move the z-axis up away from the material before any movement in the x-y plane.

Thanks in Advance

[tblough]

Jog keys are active even without the machine being homed. In the future, use the jog keys to manually clear the cutter (I.e. Jog Z up to clear the part and then jog X and/or Y to clear any other fixtures) then press home

[Nigelo]

Unless I'm missing something, you can check (and edit) the homing sequence in the homing tab of Acorn's wizard having set homing preference as Mike explained above. Just remember that Axis 3 is Z in the Wizard so this should be set to 1

[cnckeith]

Clearpath motors can be configured to home each time they are enabled or only one time per power on. If the second option is selected and all motors are powered on at the same time, you could sequence the enabling so that the Z drive was enabled first to move the cutter up and away from the table, and then enable X and Y drives after the Z is out of the way.

I'm still using steppers on my little Taig mill. If I ever get around to connecting the Clearpath servos to that mill, I'll configure the motors and the wiring to use hard-stop homing with the Z-axis set to home first and then the X and Y axes later.

Hello Mike, kindly give details on how to go about sequencing the enabling of the clearpaths motors on the MSP software.
Let me explain what happened to me recently. I have a Mechmate CNC router. It was making some cut on wood and I pressed the E-stop button. when the e-stop was released C12 prompted to home the machine. since the cutting bit was still embedded in the wood, and all 3 axis moved simultaneously, the bit was broken.
the problem i have is that if there is a power cut or and e-stop event, i may surely lose more router bits.
I am asking on the procedure on how to first move the z-axis up away from the material before any movement in the x-y plane.

Thanks in Advance

There are multiple ways to wire and configure Clearpath hard stop homing and each one will act different. So when asking for help you have to be very specific on how you wired it and how you have both the MSP software and CNC12 configured. Otherwise you are going to get answers and guidance from one of us who thinks you have it configured one way when in reality you have it done another way.

First establish how you have the DC power to the Clearpath motor wired in relation to the Estop contactor.

1.) Estop contactor DOES NOT interrupt the Teknic DC servo bus voltage during a fault/estop press.

2.) Estop contactor DOES interrupt the Teknic DC servo bus voltage during a fault/estop press.

3.) Estop contactor DOES interrupt the Teknic DC servo bus voltage during a fault/estop press BUT a Teknic Power Hub is being used to retain 'low voltage' during estop so motor still has logic power but not enough power to move.

[vustasmith]

Hi Keith,
thank you for taking time to consider my question. I'll answer your questions as best as I can.
E-stop contactor is wired to cut of ac voltage to the IPC5 power supply. In an e-stop event no ac voltage to the IPC5, hence no 75VDC output to the Clearpath. But there is 24VDC power to the power Hub. In an estop event 75vDC is cutoff but 24VDC is maintained to the power hub as as logic voltage.

Usually best practice suggest that z axis moves up first before movement in the xy plane during homing routine. My observation is that all axes moves simultaneously.
I wish to how to configure the setup such that z axis moves up first during homing routine as Mike suggested

[vustasmith]

I have a gantry router with 02 clearpath motors on the x axis. for the clearpath homing setup I followed the instruction on TB319 documentation

[vustasmith]

Also I have a rotary axis on the machine. the 02 motors on the x axis are connected together to a single terminal on the acorn board (hardware paired)

[Jalger01]

I’m new to this thread and have been able to get hard stop homing working with m SDSK servos. The problem I am having is the homing routine begins when the motors are first enabled. In my case, this is after acorn has established connection with the board, and the e-stop is cycled. This is an issue because my z axis brake does not release until the cycle start button has been pressed. This requires me to cycle the e stop and quickly press cycle start before the x axis thinks it’s already hit the stop.

Is there a way to either release the brake as soon as the motors are enabled, or not enable the motors until cycle start has been pressed?

[cnckeith]

I’m new to this thread and have been able to get hard stop homing working with m SDSK servos. The problem I am having is the homing routine begins when the motors are first enabled. In my case, this is after acorn has established connection with the board, and the e-stop is cycled. This is an issue because my z axis brake does not release until the cycle start button has been pressed. This requires me to cycle the e stop and quickly press cycle start before the x axis thinks it’s already hit the stop.

Is there a way to either release the brake as soon as the motors are enabled, or not enable the motors until cycle start has been pressed?

are you using that c86 board or? need more info on how you have things wired up. photo album and a report.zip go a long way to getting good answers.