86
d) Correction of the printing plate temperature
The firmware makes it possible to adjust the temperature of the printing plate. For this, the actual temperature on the surface must be measured
at different temperature settings. The measured values then must be entered in the firmware. This way, the printer can adjust the temperature
automatically.
Before starting, check if a new firmware version is available. If this is the case, download it, unpack the ZIP archive and install the
firmware on your printer. Observe chapter "20. Firmware update with the Arduino
TM
IDE".
• The firmware has 6 temperatures defined: 60, 80, 100, 120, 140, 160 °C.
• First set 60 °C at the printer.
When the temperature is reached, wait for at least another 10 minutes for the printing plate to be heated through entirely and the
temperature to stabilise.
• Then measure the printing plate temperature in different locations.
Do not touch the hot printing plate when measuring! Danger of burns!
Use a suitable meter. We recommend, e.g., a thermal imaging camera or a thermometer with surface sensor (NiCr-Ni or K-bead).
• Determine the average of the different measurements.
• Then heat up to 80 °C and repeat this. Proceed in the same manner with the other temperatures 100, 120, 140 and 160 °C.
• When you have determined all temperatures, open the firmware on your computer as described in chapter "20. Firmware update with the
Arduino
TM
IDE".
• Enlarge the Arduino
TM
program window on the entire screen.
• Navigate to the tab "
RF2000V2.h
" (1 in the figure below) and in it approximately to line 584 (may vary slightly depending on the firmware).
• The line "
#define BED_SETPOINT_TEMPERATURES {60, 80, 100, 120, 140, 160}
" (2) defines the target temperatures.
These are the temperatures that are set at printer. If everything is going optimally, they will also apply at the surface of the heating plate.
• The line "
#define BED_MEASURED_TEMPERATURES {60, 80, 100, 120, 140, 160}
" (3) defines the measured values.
• Enter your measured values in this line (3) or replace the existing ones by the ones you measured. This way, the printer knows that, e.g., only
112 °C are present at the surface of the heating plate in spite of 120 °C being set, and can adjust the temperature accordingly.
The measured values can, of course, also be lower or higher.
• When you have changed all values, click the button with the arrow down to save the changes (4).
• Then you must upload the changed firmware to the printer. For this, observe again chapter "20. Firmware update with the Arduino
TM
IDE".
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