Hard jitteing form stepper motor during heating.
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I hsd recently bought a new DuetWifi. Installed it in my delta printer. the problem i currently face is that , while heating the heater of extruder i cant move the stepper motors properly, high jittering,vibrations and large noise are produced from the stepper motors. What will be the problem. Could someone please help me. Am pretty new to the duet. I had been using ramp 1.4 earlier.
Am on the latest firmware. -
Could you post the output from a M122 command?
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Maybe inductance from the heater wiring into the stepper wiring? (disclaimer, this is wild guess, I don't actually know wtf I'm talking about)
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Would also be nice to know which Motors or is it all of them?
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21:39:05M122
=== Diagnostics ===
Used output buffers: 1 of 32 (4 max)
=== Platform ===
Static ram used: 20320
Dynamic ram used: 72808
Recycled dynamic ram: 1080
Stack ram used: 968 current, 3732 maximum
Never used ram: 33132
Last reset 00:00:54 ago, cause: software
Last software reset code 0x0003, HFSR 0x00000000, CFSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
Spinning module during software reset: GCodes, available RAM 33088 bytes (slot 4)
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 39.8, current 42.2, max 45.5
Supply voltage: min 11.7, current 11.8, max 11.9, under voltage events: 0, over voltage events: 0
Driver 0: stalled standstill
Driver 1: standstill
Driver 2: stalled standstill
Driver 3: standstill
Driver 4: standstill
Date/time: 2017-04-09 21:39:04
Slowest main loop (seconds): 0.003094; fastest: 0.000035
=== Move ===
MaxReps: 0, StepErrors: 0, MaxWait: 0ms, Underruns: 0, 0
Scheduled moves: 0, completed moves: 0
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
Probe change coordinates:
=== Heat ===
Bed heater = 0, chamber heater = -1
Heater 1 is on, I-accum = 0.0
=== GCodes ===
Segments left: 0
Stack records: 2 allocated, 0 in use
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
Code queue is empty.
=== Network ===
WiFiServer is running
SPI underruns 0, overruns 0
=== Webserver ===
HTTP sessions: 1 of 8 -
If it only occurs during heating then it may mean that the power supply voltage is dropping too much under load. The M122 diagnostic report will tell you what the power supply voltage is, and also whether there have been any under voltage events.
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Was that M122 report produced before or after you tried moving the motors while heating?
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The problem is with all the motors.
Will it be caused due to insufficient power?
After an error stating heater is faulty ( temp not rising fast). The motors work perfectly. -
Was that M122 report produced before or after you tried moving the motors while heating?
Sorry I couldn't take the M122 during the problem since am scared it would effect the duetwifi if left like that for longer.
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Can you turn on the heaters, then run M122 again?
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Can you turn on the heaters, then run M122 again?
M122
=== Diagnostics ===
Used output buffers: 1 of 32 (4 max)
=== Platform ===
Static ram used: 20320
Dynamic ram used: 72808
Recycled dynamic ram: 1080
Stack ram used: 968 current, 3776 maximum
Never used ram: 33088
Last reset 00:00:34 ago, cause: software
Last software reset code 0x0003, HFSR 0x00000000, CFSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
Spinning module during software reset: GCodes, available RAM 33132 bytes (slot 3)
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 41.5, current 44.4, max 47.3
Supply voltage: min 9.6, current 9.6, max 11.9, under voltage events: 0, over voltage events: 0
Driver 0: stalled standstill
Driver 1: stalled standstill
Driver 2: stalled standstill
Driver 3: standstill
Driver 4: standstill
Date/time: 2017-04-09 21:55:10
Slowest main loop (seconds): 0.003092; fastest: 0.000035
=== Move ===
MaxReps: 3, StepErrors: 0, MaxWait: 1247ms, Underruns: 0, 0
Scheduled moves: 5, completed moves: 5
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
Probe change coordinates:
=== Heat ===
Bed heater = 0, chamber heater = -1
Heater 1 is on, I-accum = 0.2
=== GCodes ===
Segments left: 0
Stack records: 2 allocated, 0 in use
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
Code queue is empty.
=== Network ===
WiFiServer is running
SPI underruns 0, overruns 0
=== Webserver ===
HTTP sessions: 1 of 8 -
M122
=== Diagnostics ===
Used output buffers: 1 of 32 (9 max)
=== Platform ===
Static ram used: 20320
Dynamic ram used: 72808
Recycled dynamic ram: 1080
Stack ram used: 968 current, 3776 maximum
Never used ram: 33088
Last reset 00:02:45 ago, cause: software
Last software reset code 0x0003, HFSR 0x00000000, CFSR 0x00000000, ICSR 0x00400000, BFAR 0xe000ed38, SP 0xffffffff
Spinning module during software reset: GCodes, available RAM 33132 bytes (slot 3)
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 43.7, current 45.5, max 47.5
Supply voltage: min 9.9, current 10.0, max 10.1, under voltage events: 0, over voltage events: 0
Driver 0: stalled standstill
Driver 1: stalled standstill
Driver 2: stalled standstill
Driver 3: standstill
Driver 4: standstill
Date/time: 2017-04-09 21:57:21
Slowest main loop (seconds): 0.004761; fastest: 0.000092
=== Move ===
MaxReps: 0, StepErrors: 0, MaxWait: 0ms, Underruns: 0, 0
Scheduled moves: 5, completed moves: 5
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
Probe change coordinates:
=== Heat ===
Bed heater = 0, chamber heater = -1
Heater 1 is on, I-accum = 0.5
=== GCodes ===
Segments left: 0
Stack records: 2 allocated, 0 in use
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
Code queue is empty.
=== Network ===
WiFiServer is running
SPI underruns 0, overruns 0
=== Webserver ===
HTTP sessions: 1 of 8 -
Thanks. It's a power problem, as shown by this line:
Supply voltage: min 9.6, current 9.6, max 11.9, under voltage events: 0, over voltage events: 0
If the supply voltage drops just 0.1V more than an under voltage event will be triggered and the stepper drivers will be turned off to protect them.
So I think either your power supply isn't up to the job, or the wires from the PSU to the Duet are too thin, or you have a bad connection e.g. loose terminal block screw.
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Thanks a lot sir. I will check into it and reply soon.
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After I changed my wires everything worked perfectly.
Thanks to everyone. :))
