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1) the power of the heater is much higher now and the PID controller is adjusted wrong. This is very difficult to fix if the heater has twice the power it used to - basically you need to edit configuration.h and lower the max power. Also cut P by the increase in power (if heater is 2X wattage then cut P in half).
2) Bad wiring for the thermocouple. Does the temp vary by 20 degrees over the course of 30 seconds? Or just 1 second. If 1 second then the sensor is having a problem. Could be many things. I would measure the voltage at the output of the board on top of the print head. It should be 0V for 0C and 5V for 500C and linear in between. e.g. 20C is 200mv. Also push the head around to the 4 corners and see if the temp bounces around. Check for loose wires.
3) The wires from the thermocouple to the small circuit board in the print head are VERY sensitive to noise from the fan wires. Separate the fan wires far from the thermocouple wires - 20mm should be plenty. 1mm is too close. Twisting the fan wires can also help but just moving them far away is enough. Obviously this is only a problem when voltage is applied to the fan so starting layer 2 (even if the fan not moving yet).
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Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more.
S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
(Sorry, was out of office when this released)
This update is for...
All UltiMaker S series
New features
Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
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gr5 2,170
Some possibilities:
1) the power of the heater is much higher now and the PID controller is adjusted wrong. This is very difficult to fix if the heater has twice the power it used to - basically you need to edit configuration.h and lower the max power. Also cut P by the increase in power (if heater is 2X wattage then cut P in half).
2) Bad wiring for the thermocouple. Does the temp vary by 20 degrees over the course of 30 seconds? Or just 1 second. If 1 second then the sensor is having a problem. Could be many things. I would measure the voltage at the output of the board on top of the print head. It should be 0V for 0C and 5V for 500C and linear in between. e.g. 20C is 200mv. Also push the head around to the 4 corners and see if the temp bounces around. Check for loose wires.
3) The wires from the thermocouple to the small circuit board in the print head are VERY sensitive to noise from the fan wires. Separate the fan wires far from the thermocouple wires - 20mm should be plenty. 1mm is too close. Twisting the fan wires can also help but just moving them far away is enough. Obviously this is only a problem when voltage is applied to the fan so starting layer 2 (even if the fan not moving yet).
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