WBo2
2006.11.09 While calibrating the WB02 controller circuit I ran in to some trouble..
- wbo2_pump_pw_zero=0x66 = 0,1V
- 0x66 is a reasonable value for wbo2_pump_pw_zero
- 2 x 100 ohm resistors mounted..
- wbo2_pin5 (nernst-) = 4,06V
- But between wbo2_pin1 and wbo2_pin5 I only get 0,33V, and if I ajust nernst_dc_target up to ~AA to get to 0,45V display just keep writing ??.? after warmup.
- check that the board supply voltage is sufficient. The nernstdc_target test needs 12 ..13V (even with 100+100 Ohm, but especially if you use 100+270 Ohm resistor)
- If I tune the wbo2_pump_pid_.. I can get op to 0,44-5V and still get a value after warmup.
Question is:
- are there any wbo2_pump_pid_..-values that should be used, like those: http://www.vems.hu/manual/html/ch09s06.html ?
- PID values should be tuned until pump values are stable. wbo2_pump_pid_kd should be set to 0x00. My wbo2_pump_pid_kp=1E, wbo2_pump_pid_ki=46. Try those as a starting point and tuning from there.
- you can just use the wbo2 heater and pump PID values from MembersPage/MarcellGal/EngineSwap
- and will it stop writing ??.? after warmup (with high nernstdc_target- pump_pid- values) as soon as the real WBo2 gets connected?
- Yes, unless you have other problems.
- check the LCD page that has "Ri" (mlp07 ?). That will tell a lot. Send us snapshots ("save to file") from your terminalprogram.
Okay thanks. After writing i calibrated with the following values:\nÿ1ÿ
- Are they okay or should I re-calibrate based on you values?\n
wbo2_pump_pid_kp=1E wbo2_pump_pid_ki=46 wbo2_pump_pid_kd=00
- Is it normal that it takes the WBo2 80 seconds to warm up?