MASSO G3 won t move

[hamish]

hello I have just got a g3 for my router and I can t get it to move. The DRO is moving on the computer screen however nothin is moving.

I had previously tested the machine using a mach 3 breakout board with a manual controller attached so I know the drives work. I have got leadshine ES-D808 servo drives and I have connected in the differential type controller as per the attachment.



Help. Please

 

[hamish]

OK so I have worked out on the g2 version the x,y,z are differential outputs and the A,B are PNP, (I think)

where the G3 they are all differential outputs. The controller I am using has the same connections as the CS-D-1008 and I have connected it correctly.

Help

 

[hamish]

So I have investigated the enable input and this basically will shut down the stepper motor and remove the holding current when I apply 5 volts to the terminals. As per the drive instructions it says to leave it unconnected.

The system just sits with all of the motors with a holding current locked in position.

 

[masso-support]

Hi Hamish,

From your description you appear to have the axis wired correctly.

If you are working on just one axis at this time have you tried connecting to a different one and seeing if that works?

Can you please share a screen print of the settings on one of the axis you are having trouble with and one of the F2 screeen? To get a screen print just press CTRL+P on your keyboard and it will dump a screen print to your flash drive.

Could you share a photo of the connections into the drive and one of the Masso axis connection?

Cheers

Peter

 

[hamish]

Print screen as requested

 

[masso-support]

Thanks Hamish,

Looking at the Z axis setting you have the soft limits set incorrectly.

Set you Maximum travel to 0 and your minimum travel to -117

The Z axis is usually zeroed at the top making the maximum 0 and the minimum must be less than the maximum so this would be -117.

Let me know is this helps.

Cheers

Peter

 

[hamish]

No this didn't work

I have an MPG as well and its not working either

 

[masso-support]

I see in the screen print that you have the MPG set to off.

The MPG axis should change to indicate X,Y,Z etc as you rotate axis selector.

Also you can only jog with the MPG when you are in the F3 jog screen.

Have you tried the using buttons on the jog screen?

Cheers

Peter

 

[hamish]

MPG is currently disconnected and I have tried it from both the MPG and the jog screen. Neither will work.



I have included a picture of the board layout for clarity. The estop is temporarily hanging for the moment while the door is off the enclosure.

I tried temporarily wiring the homeing limits is as well and this had no effect with them connected or not

 

[hamish]

When I am in the F3 screen and I operate the buttons with the mouse or use the MGP the numbers in the highlighted areas move as if the machine should be moving however the crosshair in the left hand corner never moves

 

[masso-support]

Thanks Hamish

Could you just confirm that the DRO's are changing when you are jogging?

Cheers

Peter

 

[hamish]

100 % Both sets of DRO numbers are moving when I use either the F3 page with the mouse or if I plug in the MGP the same will occur.

If I go to the F3 page and hit the homing button it will move all of the DRO scales as well

In both instances nothing mechanically moves.

 

[masso-support]

looks like the drives require more current then masso is able to supply, please do the below test:

1. Try to move one of the motors to one direction.
   
2. Then measure the voltage on D- and D+ pins when the drive is connected to MASSO.
   
3. Then move in the opposite direction and measure the D- and D+ voltage again.
   
4. let us know what are these two voltages.
   

After this do the above test again but this time disconnect the drive from MASSO and measure D- and D+ on the masso connector.

Then

 

[hamish]

With the following measurements between the D+ and the D-

x axis

1. With the lead plugged into the controller moving in the positive direction -3.213 volts
   
2. With the lead plugged into the controller moving in the negative direction 1.910 volts
   
3. With the lead un-plugged into the controller moving in the positive direction -3.705 volts
   
4. With the lead un-plugged into the controller moving in the negative direction 3.714 volts
   

all other axis are the same measurements within the last decimal figure. they are connected in a differential arrangement.



when I plug in my mach three manual jog controller to the stepper motor driver (pnp arrangement) it has zero voltage while no direction buttons are being pressed with the masso it will hold the last command voltage on until I press the opposite direction of travel.

 

[hamish]

Just tested all of the outputs down to the ground terminal and all are reading 4.8 volts when they go high, with exception of the ES-output this switches with the emergency stop and it is only going between 3.7 volts and zero when the e-stop is operated should it be going to 5V?



There is no load connected to any of the outputs

 

[masso-support]

thanks for the data.

So when moving in the negative direction the opto on the drive is drawing a lot of current and the voltage is dropping from 3.714 volts to 1.910 volts. As per the leadshine ES-D808 datasheet, the inputs need "4.5-24V when PUL-HIGH" this means that they have a wide range and needs higher voltage to work.

 

[hamish]

OK Solution?

I just connected the pulse and direction inputs in the same way as the gecko 203v and now its operating. When I measure between ground and the direction + I get 2.2V on the x axis ( I measure the same voltage in the -ve direction on all axis xyz&b)

All is operating now. Am I overloading the Masso controller by wiring in this way and will this void any warranties or cause a reduced life span.



I have included a picture of the wiring

Please not I have removed the wire connectors for clarity because they were blocking the picture

red = step+

white = step-

blue = dir+

Brown = dir -

 

[masso-support]

Hi @hamish we were also thinking this way but were not sure if it would make any difference as the voltage difference would not be much. As you mentioned that you get 2.2v which we think is still less than what the drive requires, just keep this in mind in the future that just in case you have some motion issues then this might be the case.

Regarding the outputs getting damaged this way, this is perfectly fine and will not cause any damage to the controller as for some drives that have common negative inputs, this is the way to wire them.

are you based in Australia?

 

[hamish]

I am based in Melbourne.

I will run it as it and see how it goes.

In regards to The es terminal what is the function and the correct Voltage and is it a TTL output. There is no information on your website yet about it.

I will fit all of the hard limits and run some tests

 

[masso-support]

if it's possible, can you send us one of the drives then we can do some tests and see what can be done to provide signals as required by the drives. because the manual provides very limited info and having the drives would help, then we can send you a unit that has the current limiting resistors as per the drives and you can send the current unit back. And we will be happy to pay for all courier charges for sending the drive and will send the drive back the next day.