Retrofitting a MAHO MH500W '89-'90 with hand-feed

Let's try and be a bit more specific:

My machine has a maximum velocity of 2 meter / min = 33.3 mm/second.
Which value should I configure as 33.3 so then the output is normalized and I can set FF1 to 1.0? 

Another thing that confuses me is that, as is, it moves with a 2000mm/min velocity at 10V.  How can the product manual say the machine had 4meter/minute rapids?

 

It has 4meters in X,Y  and 2meters in Z (maho Y is normal Z)

I just measured that moving at 500mm/min takes 1.15V for X and Y while the on Z takes 2.3V

petmakris wrote:

Let's try and be a bit more specific:

My machine has a maximum velocity of 2 meter / min = 33.3 mm/second.
Which value should I configure as 33.3 so then the output is normalized and I can set FF1 to 1.0? 
 

The PWM scale value

One way of looking at this is If the PWM scale value is 33.3 a commanded velocity
of 33.3 mm/sec will result in full scale PWM

I managed to find a set of values with sweet performance.
Last values on repository (links above).

Normalizing the scale output did not work for me, I was getting huge following error in velocities > 500mm/min.
 

Well, normalizing will work but you also have to make sure the PID maxoutput does not limit the output... (and the FF1=1.0 is only as accurate as you speed measurement at 10V)

You need a value in FF1.
Keep increasing the value until f-error goes on the other side on zero. The back off until it stays close to zero.