Messages

121

General Mach Discussion / Re: Reversed Jog, on Jog TAB / Control Screen

« on: May 06, 2019, 03:55:50 AM »

Solution is in reply # 5 of this thread

122

General Mach Discussion / Re: Motors stalling /growling

« on: May 05, 2019, 07:15:06 PM »

Also see attached (result published at Hackaday)
Highest accuracy is 1/8 microsteps (1600 microsteps/rev)
Above 1/16 microsteps (3200 microsteps/rev) stepper motor can no longer position accurately.

123

General Mach Discussion / Re: Motors stalling /growling

« on: May 05, 2019, 05:33:56 PM »

should my drivers never be set above 1600 steps per rev. ?? And than set accordingly?

Craig already said it well.
See attached and ask yourself.
Do I want to lose more "holding torque" by setting micro-steps much higher?
Holding torque.
A stepper motor's holding torque is the amount of torque needed in order to move the motor one full step when the windings are energized but the rotor is stationary
More holding torque is needed if you want to cut MORE deeper in one pass.

124

General Mach Discussion / Re: motor direction changes after power outage

« on: May 05, 2019, 01:18:09 AM »

thanksfor the tip
what does this actually do?
regards

fred

Here is a good read:-
https://product.tdk.com/en/products/emc/emc/power-line/technote/pdf/generaltec_power-line_en.pdf

I suspected that motor direction change is a malfunction cause by CONDUCTED NOISE along the power cable(s). Hence I proposed Mains Input EMI filter.
Motor direction is just a signal change at at dir pins of the BOB and not necessarily will corrupt  the MACH3  XML file.

I had a electronically controlled Centralized gas heater that blew 3 times and ALWAYS in WINTER just because I did not have Filters and/or Surge protectors installed. After I put in a filter, I have had over 10 years FREE of problem.

125

General Mach Discussion / Re: Motors stalling /growling

« on: May 04, 2019, 11:30:44 PM »

Made changes on driver switches but did not solve the growling/stalling. May be I just need to find tune the motors. Any suggestion are welcome?

see attached (mm units) as starting point. Then tune up by making changes to suit your hardware.
If you have a fast PC, step pulse could be decreased to 5 or even 2. Decrease until SMOOTH.

increase speed and accel for each axis until it's becomes too high then back off 20% for normal use.

126

Mach4 General Discussion / Re: Dust hood

« on: May 04, 2019, 06:56:10 AM »

I am just pointing out that MACH4's m00 and m01 does NOT STOP THE COOLANTS whereas Fanuc and Hass' m00 and m01 do.

Craig had asked why would anyone want to edit MACH4's M00 or M01.
I just said that one valid reason is to make m00 and m01 turn OFF the coolant as well.

There is no need to resort to personal attacks.

127

General Mach Discussion / Re: Nema34 to Mach3 IB connected to DQ860MA

« on: May 04, 2019, 05:06:36 AM »

Have used the two highest amp setting on dip also, 6,7,8 doing ON OFF OFF and OFF OFF OFF for 7. or 7.8amp

Cant think of what else can be the issue here

I think the common Nema 34 bundled5 with DQ860MA  is 3.5A MAX ONLY.

7 amp and 7.8 amp settings could have burnt up some of the stepper motor windings.

Also how many watts is your PSU?
Say it is 400W at 36volts. That is only 11Amps MAX.. How it that then able to supply 7.8A per phase to 2 or 3 motors? Just do the MATH.
Think before you try anything.

128

Mach4 General Discussion / Re: Dust hood

« on: May 04, 2019, 04:48:23 AM »

Craig: "My understanding is that it was not possible to write an m0(), m1(), and m2() for instance. That is no longer the case, although why you would want to modify these m codes is beyond me."

There is one valid reason of some people wanting to modify m0() and m1() - i.e. to include turning of ALL the coolants in M0() and M1() just like the m0 and m1 of both FANUC (world #1) and HAAS (world #2).

If MACH4 wants to be industrial, it cannot just remain at hobbyist quality.

129

Mach4 General Discussion / Re: Dust hood

« on: May 03, 2019, 08:38:32 PM »

Hi,

I am using 24V. This setup has been working whithout any problem for 8 years with mach3. If I run my cnc with mach3 the dust hood is working as it should. When run by mach4 I have this problem when output is suddenly turned off.

Peter

Have you tried using M7  and M9 for your dust hood just to prove that hardware is Ok?

I suspect, MACH4 GUI does not like user defined MACROS that are not written as "COROUTINES".

M6, M7, M8 and M9 are are already KNOWN to the "MACH4 GUI" modules. User defined Macros are NOT.

130

General Mach Discussion / Re: motor direction changes after power outage

« on: May 03, 2019, 04:42:31 PM »

Please install power EMI filter for your machine controller box.

If single phase something like
https://www.ebay.com/itm/Single-Phase-AC-Power-Line-EMI-Filter-AC-115-250V-50-60Hz-20A-Suppressor-/123684313976

If three phase
google..