first step to config StepConf and step motor strange song ...

Hello,

After using for a year my self built machine driven by Mach3, I couldn’t correct some random step problems between two cessions.
I decide then to move to Linux and give a chance to this option.

My machine uses a control board 5 axis breakout board HY-JK02-M and three step by step motors nema 23 and 3 TB1H microstepping driver inspired on the Toshiba high-efficiency TB6600HG. After learning how to use Linux and linuxcnc I heard the first hummings of the motors.

BUT in slow speed the motors heat a lot making this noise VRRRRRRRRRRRRRR
which means something is wrong with the settings.

I would like to precise that I’m a self taught man for my machine conception and the settings. So I apologize for the incorrect use of my CNC vocabulary.

Here’s how I set the Step Config after the axis calibration.

LinuxCNC Stepper Mill Configuration


Basic machine information:

Machine Name: h.Daguet
Axis configuration: XYZ
Machine units: Millimeter
Driver type: Other
Step Time: 2500
Step Space: 2500
Direction Hold: 10000
Direction Setup: 5000
First Parport Base Address: 0x378
Base Period Maximum Jitter: 5000 <je suis un peut dans le flou pour ce point j ai tester plusieurs chose sans que cela change quoi que ce soit
Onscreen prompt for tool change: ON



Parallel Port Setup:

-> Outputs (PC to Mill):
PIN 01: Amplifier Enable
PIN 02: X Step
PIN 03: Y Direction
PIN 04: Unused
PIN 05: A Direction
PIN 06: A Step
PIN 07: Z Step
PIN 08: Z Direction
PIN 09: Spindle PWM
PIN 14: X Direction
PIN 16: Y Step
PIN 17: Unused

-> Input (Mill to PC):
PIN 01: Both Limit + Home X
PIN 02: Both Limit + Home Y
PIN 03: Both Limit + Home Z
PIN 04: Both Limit + Home A
PIN 05: Unused


Axis Configuration:

Motor steps per revolution: 351.4757 pour X, 340.8176 pour Y, 356.1253 pour Z
Driver Microstepping: 2.0
Pulley teeth (Motor:Leadscrew): 1.0
Leadscrew Pitch: 5
Maximum Velocity: 25.0
Maximum Acceleration: 750.0
Home location: 0.0
Table travel: 400.0
Home Switch location: 0.0
Home Search velocity: 0.0
Home Latch direction: Same




Microstep Driver 2M982 configuration

For 1.2A RMS current:
SW1: 1
SW2: 0
SW3: 1

For 1/2 microtep
SW5: 0
SW6: 0
SW7: 1

So what do you think? I would like to have your expert opinion before go through LinuxCNC and the Backslash... etc.

Thank you in advance.

Looking forward to hearing from you.

For a start I would change this.
Step Time: 2500 to 5000
Step Space: 2500 to 5000
Direction Hold: 10000
Direction Setup: 5000

Its always a good idea to post your config files ini & hal

Heating at low speeds is normal for a stepper motor. They can get quite hot.

And some noise is also quite normal. (With the right programming you can even play music with steppers.) Without hearing the noise I don't think we can say if it is normal or not.

thx !
after modification


# Generated by stepconf 1.1 at Tue Jan 1 01:27:52 2008
# Si vous modifiez ce fichier, il sera
# écrasé quand vous relancerez Stepconf

[EMC]
MACHINE = H.Daguet
DEBUG = 0

[DISPLAY]
DISPLAY = axis
EDITOR = gedit
POSITION_OFFSET = RELATIVE
POSITION_FEEDBACK = ACTUAL
ARCDIVISION = 64
GRIDS = 10mm 20mm 50mm 100mm 1in 2in 5in 10in
MAX_FEED_OVERRIDE = 1.2
MIN_SPINDLE_OVERRIDE = 0.5
MAX_SPINDLE_OVERRIDE = 1.2
DEFAULT_LINEAR_VELOCITY = 2.50
MIN_LINEAR_VELOCITY = 0
MAX_LINEAR_VELOCITY = 25.00
INTRO_GRAPHIC = linuxcnc.gif
INTRO_TIME = 5
PROGRAM_PREFIX = /home/daguet/linuxcnc/nc_files
INCREMENTS = 5mm 1mm .5mm .1mm .05mm .01mm .005mm

[FILTER]
PROGRAM_EXTENSION = .png,.gif,.jpg Greyscale Depth Image
PROGRAM_EXTENSION = .py Python Script
png = image-to-gcode
gif = image-to-gcode
jpg = image-to-gcode
py = python

[TASK]
TASK = milltask
CYCLE_TIME = 0.010

[RS274NGC]
PARAMETER_FILE = linuxcnc.var

[EMCMOT]
EMCMOT = motmod
COMM_TIMEOUT = 1.0
COMM_WAIT = 0.010
BASE_PERIOD = 100000
SERVO_PERIOD = 1000000

[HAL]
HALFILE = H.Daguet.hal
HALFILE = custom.hal
POSTGUI_HALFILE = custom_postgui.hal

[TRAJ]
AXES = 3
COORDINATES = X Y Z
LINEAR_UNITS = mm
ANGULAR_UNITS = degree
CYCLE_TIME = 0.010
DEFAULT_VELOCITY = 2.50
MAX_VELOCITY = 25.00

[EMCIO]
EMCIO = io
CYCLE_TIME = 0.100
TOOL_TABLE = tool.tbl

[AXIS_0]
TYPE = LINEAR
HOME = 0.0
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
STEPGEN_MAXACCEL = 937.5
SCALE = 140.59028
FERROR = 1
MIN_FERROR = .25
MIN_LIMIT = -0.001
MAX_LIMIT = 400.0
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = 1.500000
HOME_LATCH_VEL = 1.500000
HOME_IGNORE_LIMITS = YES
HOME_SEQUENCE = 1

[AXIS_1]
TYPE = LINEAR
HOME = 0.0
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
STEPGEN_MAXACCEL = 937.5
SCALE = 136.32704
FERROR = 1
MIN_FERROR = .25
MIN_LIMIT = -0.001
MAX_LIMIT = 400.0
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = 1.500000
HOME_LATCH_VEL = 1.500000
HOME_IGNORE_LIMITS = YES
HOME_SEQUENCE = 2

[AXIS_2]
TYPE = LINEAR
HOME = 0.0
MAX_VELOCITY = 25.0
MAX_ACCELERATION = 750.0
STEPGEN_MAXACCEL = 937.5
SCALE = 142.45012
FERROR = 1
MIN_FERROR = .25
MIN_LIMIT = -0.001
MAX_LIMIT = 150.0
HOME_OFFSET = 0.000000
HOME_SEARCH_VEL = 1.500000
HOME_LATCH_VEL = 1.500000
HOME_IGNORE_LIMITS = YES
HOME_SEQUENCE = 0