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Lock/buzzing of both my z axis/print bed stepper motors

Posted by Bernie 
Lock/buzzing of both my z axis/print bed stepper motors
July 01, 2019 09:24PM
Well I have posted here and gotten enough suggested to me to get my extruder issue corrected. Unfortunately now I have another issue. My setup in my configuration file was wrong for steps per mm on the z axis. I corrected it by increasing the number so when the bed was jogged 10mm it actually moved 10mm (it was only moving 2mm). This increase in the original 800 number for the 2mm had to be increased to 3200 for 10mm. Now that that’s fixed my z axis (2) steppers lock and buzz when homed or when the print cycle begins to start a print. They both jog just fine but homing is a no go. I have included my configuration file if anyone cares to look for a fix. I’ve been told the relationship between speed/torque has been disturbed so adjustments need to be made. I don’t have a formula or understanding, say with a chart, or whatever to fix this. Please help.
#ReP_AL 300x300 CONFIG 05.05.2019
#==================================


# NOTE Lines must not exceed 132 characters
# Robot module configurations : general handling of movement G-codes and slicing into moves
default_feed_rate 4000 # Default rate ( mm/minute ) for G1/G2/G3 moves
default_seek_rate 4000 # Default rate ( mm/minute ) for G0 moves
mm_per_arc_segment 0.02 # Arcs are cut into segments ( lines ), this is the length for
# these segments. Smaller values mean more resolution,
# higher values mean faster computation
mm_per_line_segment 5 # Lines can be cut into segments ( not usefull with cartesian
# coordinates robots ).

# Arm solution configuration : Cartesian robot. Translates mm positions into stepper positions
arm_solution corexy
alpha_steps_per_mm 160 # Steps per mm for alpha stepper
beta_steps_per_mm 160 # Steps per mm for beta stepper
gamma_steps_per_mm 3200 # Steps per mm for gamma stepper

# Planner module configuration : Look-ahead and acceleration configuration
planner_queue_size 32 # DO NOT CHANGE THIS UNLESS YOU KNOW EXACTLY WHAT YOU ARE DOING
acceleration 200 # Acceleration in mm/second/second.
z_acceleration 60 # Acceleration for Z only moves in mm/s^2, 0 uses acceleration which is the default. DO NOT SET ON A DELTA
acceleration_ticks_per_second 1000 # Number of times per second the speed is updated
junction_deviation 0.02 # Similar to the old "max_jerk", in millimeters,
# see [github.com]
# and [github.com]
# Lower values mean being more careful, higher values means being
# faster and have more jerk
#z_junction_deviation 0.0 # for Z only moves, -1 uses junction_deviation, zero disables junction_deviation on z moves DO NOT SET ON A DELTA
#minimum_planner_speed 0.0 # sets the minimum planner speed in mm/sec





# Stepper module configuration ("!" to the number will invert a pin )
#==============================================================================
microseconds_per_step_pulse 1 # Duration of step pulses to stepper drivers, in microseconds
base_stepping_frequency 100000 # Base frequency for stepping, higher gives smoother movement

# Cartesian axis speed limits
x_axis_max_speed 15000 # mm/min
y_axis_max_speed 15000 # mm/min
z_axis_max_speed 300 # mm/min

# X AXIS
alpha_step_pin 2.0 # Pin for alpha stepper step signal
alpha_dir_pin 0.5! # Pin for alpha stepper direction
alpha_en_pin 0.4 # Pin for alpha enable pin
alpha_current 1.5 # X stepper motor current
alpha_max_rate 10000.0 # mm/min

#Y AXIS
beta_step_pin 2.1 # Pin for beta stepper step signal
beta_dir_pin 0.11! # Pin for beta stepper direction
beta_en_pin 0.10 # Pin for beta enable
beta_current 1.5 # Y stepper motor current
beta_max_rate 10000.0 # mm/min

#Z Axis
gamma_step_pin 2.2 # Pin for gamma stepper step signal
gamma_dir_pin 0.20 # Pin for gamma stepper direction ! to reverse direction
gamma_en_pin 0.19 # Pin for gamma enable
gamma_current 2.0 # Z stepper motor current
gamma_max_rate 400.0 # mm/min

# E Axis
extruder.hotend.step_pin 2.3 # Pin for extruder step signal
extruder.hotend.dir_pin 0.22! # Pin for extruder dir signal
extruder.hotend.en_pin 0.21 # Pin for extruder enable signal
delta_current 2.0 # First extruder stepper motor current





# Serial communications configuration ( baud rate default to 9600 if undefined )
#============================================================================================

uart0.baud_rate 250000 # Baud rate for the default hardware serial port
second_usb_serial_enable true # This enables a second usb serial port (to have both pronterface
# and a terminal connected)
#leds_disable true # disable using leds after config loaded
#play_led_disable true # disable the play led
pause_button_enable true # Pause button enable
#pause_button_pin 2.12 # pause button pin. default is P2.12
#kill_button_enable false # set to true to enable a kill button
#kill_button_pin 2.12 # kill button pin. default is same as pause button 2.12 (2.11 is another good choice)
#msd_disable false # disable the MSD (USB SDCARD) when set to true (needs special binary)
#dfu_enable false # for linux developers, set to true to enable DFU

# Extruder module 1 configuration
#=======================================================================================================
extruder.hotend.enable true # Whether to activate the extruder module at all. All configuration is ignored if false

extruder.hotend.steps_per_mm 200 # Phil steps per mm for extruder stepper o400
extruder.hotend.default_feed_rate 300 # Default rate ( mm/minute ) for moves where only the extruder moves
extruder.hotend.acceleration 200 # Acceleration for the stepper motor, as of 0.6, arbitrary ratio o300
extruder.hotend.max_speed 40 # mm/s

# extruder offset
#extruder.hotend.x_offset 0 # x offset from origin in mm
#extruder.hotend.y_offset 0 # y offset from origin in mm
#extruder.hotend.z_offset 0 # z offset from origin in mm

# firmware retract settings when using G10/G11, these are the defaults if not defined, must be defined for each extruder if not using the defaults
#extruder.hotend.retract_length 3 # retract length in mm
#extruder.hotend.retract_feedrate 45 # retract feedrate in mm/sec
#extruder.hotend.retract_recover_length 0 # additional length for recover
#extruder.hotend.retract_recover_feedrate 8 # recover feedrate in mm/sec (should be less than retract feedrate)
#extruder.hotend.retract_zlift_length 0 # zlift on retract in mm, 0 disables
#extruder.hotend.retract_zlift_feedrate 6000 # zlift feedrate in mm/min (Note mm/min NOT mm/sec)

# Extruder module 2 configuration
#==========================================================
#extruder.hotend2.enable false # Whether to activate the extruder module at all. All configuration is ignored if false
#extruder.hotend2.steps_per_mm 140 # Steps per mm for extruder stepper
#extruder.hotend2.default_feed_rate 600 # Default rate ( mm/minute ) for moves where only the extruder moves
#extruder.hotend2.acceleration 500 # Acceleration for the stepper motor, as of 0.6, arbitrary ratio
#extruder.hotend2.max_speed 50 # mm/s

#extruder.hotend2.step_pin 2.8 # Pin for extruder step signal
#extruder.hotend2.dir_pin 2.13 # Pin for extruder dir signal
#extruder.hotend2.en_pin 4.29 # Pin for extruder enable signal

#extruder.hotend2.x_offset 0 # x offset from origin in mm
#extruder.hotend2.y_offset 25.0 # y offset from origin in mm
#extruder.hotend2.z_offset 0 # z offset from origin in mm
#epsilon_current 1.5 # Second extruder stepper motor current



# BED Settings
#==========================================================================
temperature_control.bed.enable true #
temperature_control.bed.thermistor_pin 0.23 #
temperature_control.bed.heater_pin 2.5 # 2.5
temperature_control.bed.thermistor RRRF100K # see [smoothieware.org]
#temperature_control.bed.beta 3960 # or set the beta value
temperature_control.bed.set_m_code 140 #
temperature_control.bed.set_and_wait_m_code 190 #
temperature_control.bed.designator B #
#temperature_control.bed.pwm_frequency 20 #
#temperature_control.bed.max_temp 100 #
temperature_control.bed.bang_bang true # set to true to use bang bang control rather than PID
temperature_control.bed.hysteresis 2.0 # set to the temperature in degrees C to use as hysteresis
# when using bang bang


# Hotend 1 temperature control configuration
#========================================================================================
temperature_control.hotend.enable true # Whether to activate this ( "hotend" ) module at all.
# All configuration is ignored if false.
temperature_control.hotend.thermistor_pin 0.25 # Pin for the thermistor to read
temperature_control.hotend.heater_pin 2.7 # Pin that controls the heater, set to nc if a readonly thermistor is being defined 2.7
temperature_control.hotend.thermistor RRRF100K # see [smoothieware.org]
#temperature_control.hotend.beta 3960 # or set the beta value
temperature_control.hotend.set_m_code 104 #
temperature_control.hotend.set_and_wait_m_code 109 #
temperature_control.hotend.designator T #

#temperature_control.hotend.p_factor 13.7 # permanently set the PID values after an auto pid
#temperature_control.hotend.i_factor 0.097 #
#temperature_control.hotend.d_factor 24 #

#temperature_control.hotend.max_pwm 64 # max pwm, 64 is a good value if driving a 12v resistor with 24v.


# Hotend 2 temperature control configuration
#========================================================================================

#temperature_control.hotend2.enable false # Whether to activate this ( "hotend" ) module at all.
# All configuration is ignored if false.

#temperature_control.hotend2.thermistor_pin 0.25 # Pin for the thermistor to read
#temperature_control.hotend2.heater_pin 2.6 # Pin that controls the heater
#temperature_control.hotend2.thermistor RRRF100K # see [smoothieware.org]
##temperature_control.hotend2.beta 4066 # or set the beta value
#temperature_control.hotend2.set_m_code 884 #
#temperature_control.hotend2.set_and_wait_m_code 889 #
#temperature_control.hotend2.designator T1 #

#temperature_control.hotend2.p_factor 13.7 # permanently set the PID values after an auto pid
#temperature_control.hotend2.i_factor 0.097 #
#temperature_control.hotend2.d_factor 24 #

#temperature_control.hotend2.max_pwm 64 # max pwm, 64 is a good value if driving a 12v resistor with 24v.





# Switch module for fan control
#=======================================================================================
switch.fan.enable true #
switch.fan.input_on_command M106 #
switch.fan.input_off_command M107 #
switch.fan.output_pin 2.4 #
switch.fan.output_type pwm # pwm output settable with S parameter in the input_on_comand
#switch.fan.max_pwm 255 # set max pwm for the pin default is 255


switch.hotendfan.enable true # true/false
switch.hotendfan.input_on_command M106.1 #
switch.hotendfan.input_off_command M107.1 #
switch.hotendfan.output_pin 2.6 # Heater2
switch.hotendfan.output_type pwm # digital would be on/off
switch.hotendfan.max_pwm 255 # default is 255
switch.hotendfan.fail_safe_set_to 1 # CRASH or HALT. 0 or 1

# Creates a Temp control and toggles the switch hotendheatsink on/off
temperatureswitch.hotend.enable true #
temperatureswitch.hotend.switch hotendfan # Select which switch to use.
temperatureswitch.hotend.designator T #From: temperature_control.hotend.designator
temperatureswitch.hotend.threshold_temp 40.0 # Temperature to turn on/off
temperatureswitch.hotend.heatup_poll 3 # Default is 15 - Poll heatup
temperatureswitch.hotend.cooldown_poll 3 # Default is 30 - Poll cooldown


#Switch module for spindle control
#=======================================================================================
#switch.spindle.enable false #



# Endstops
#=======================================================================================
endstops_enable true # the endstop module is enabled by default and can be disabled here
corexy_homing true # set to true if homing on a hbit or corexy
alpha_min_endstop 1.24^! # add a ! to invert if endstop is NO connected to ground
alpha_max_endstop nc #1.25^ NOTE set to nc if this is not installed
alpha_homing_direction home_to_min # or set to home_to_max and set alpha_max
alpha_min 0 # this gets loaded after homing when home_to_min is set
alpha_max 330 # this gets loaded after homing when home_to_max is set
beta_min_endstop 1.26^! #
beta_max_endstop nc #1.27^! #
beta_homing_direction home_to_min #
beta_min 0 #
beta_max 330 #
gamma_min_endstop 1.28^! #
gamma_max_endstop nc #1.29^ #
gamma_homing_direction home_to_min #
gamma_min 0 #
gamma_max 400 #

soft_endstop.enable true # Enable soft endstops
soft_endstop.x_min -5 Minimum X position
soft_endstop.x_max 330 # Maximum X position
soft_endstop.y_min -25 # Minimum Y position
soft_endstop.y_max 330 # Maximum Y position
soft_endstop.z_min 0 # Minimum Z position
soft_endstop.z_max 400 # Maximum Z position
soft_endstop.halt true # Whether to issue a HALT state when hitting a soft endstop (if false, will just ignore commands that would exceed the limit)

# optional order in which axis will home, default is they all home at the same time,
# if this is set it will force each axis to home one at a time in the specified order
homing_order XYZ # x axis followed by y then z last

# optional enable limit switches, actions will stop if any enabled limit switch is triggered
alpha_limit_enable true # set to true to enable X min and max limit switches
beta_limit_enable true # set to true to enable Y min and max limit switches
gamma_limit_enable false # set to true to enable Z min and max limit switches

alpha_fast_homing_rate_mm_s 100 # feedrates in mm/second
beta_fast_homing_rate_mm_s 100 # "
gamma_fast_homing_rate_mm_s 8 # "
alpha_slow_homing_rate_mm_s 25 # "
beta_slow_homing_rate_mm_s 25 # "
gamma_slow_homing_rate_mm_s 2 # "

alpha_homing_retract_mm 5 # distance in mm
beta_homing_retract_mm 5 # "
gamma_homing_retract_mm 1 # "

#endstop_debounce_count 100 # uncomment if you get noise on your endstops, default is 100
move_to_origin_after_home true


# optional Z probe
#=======================================================================================
zprobe.enable false # set to true to enable a zprobe
zprobe.probe_pin 1.28!^ # pin probe is attached to if NC remove the !
zprobe.slow_feedrate 5 # mm/sec probe feed rate
#zprobe.debounce_count 100 # set if noisy
zprobe.fast_feedrate 100 # move feedrate mm/sec
zprobe.probe_height 5 # how much above bed to start probe
#gamma_min_endstop nc # normally 1.28. Change to nc to prevent conflict,

********Continuation does not apply......
Re: Lock/buzzing of both my z axis/print bed stepper motors
July 02, 2019 02:00AM
Have you tried reducing gamma_fast_homing_rate_mm_s ?

Edited 1 time(s). Last edit at 07/02/2019 02:01AM by dc42.



Large delta printer [miscsolutions.wordpress.com], Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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