First Let's start with the pinout of the VEMS unit
[Pinout] image
Bench level Tester
Done,
- TPS
- 16 LED tester installed
- 4 aux LEDs installed
- FP relay
- others not hooked up
- WBO2 pump(+) - 100ohm - nernst - 100ohm - pump(-)
- primary trigger in (60-2 wheel setup +/- 2Vpp (0vdc offset -1Vmin,+1Vmax)
- secondary trigger hooked up but not in test setup.
Current problem
WBO2 setup
Board is 3.2 returned unit
WBO2 output readings hooked up to 100ohm test
gnd -- pump(+) 4.83V
gnd -- Nernst 4.38V
gnd -- pump(-) 3.95V
pump(-) --> pump(+) 0.886V
Voltage between nernst and pump- is 0.43V instead of 0.45V. Acceptable. Might be caused by too low
- main supply voltage (if < 10.5V)
- wbo2_nernstdc_target
- wbo2_pump_pid_ki (unlikely)
I am reading about the setup in the manual, but I'll gladly take any suggestions.
config setup has been tested from mt-027 supplied \mt-027\config (wintools upload) and from marcell's zipfile that uses a normal nernst ckt.
excepts included here.
- Supplied w/ mt-027
wbo2_warmup_target=FF
wbo2_abs_limit=E4
wbo2_limit_maxt=A0
wbo2_fallback=60
wbo2_retry_t=06
wbo2_edgetime_corr=BA
wbo2_edgetime_min=50
wbo2_ri_target=96
wbo2_nernstdc_target=8D # slightly increase this
wbo2_pump_pw_zero=64
wbo2_calibration=AE
wbo2_heater_pid_kp=46
wbo2_heater_pid_ki=10
wbo2_heater_pid_kd=1A
wbo2_heater_pid_ilimit=80
wbo2_pump_pid_kp=40
wbo2_pump_pid_ki=2E
wbo2_pump_pid_kd=08
wbo2_pump_pid_ilimit=84
wbo2_ri_confidence_scale=80
- from marcell;s zipped config file.
wbo2_warmup_ramp=9C
wbo2_warmup_target=FF
wbo2_abs_limit=E4
wbo2_limit_maxt=A0
wbo2_fallback=60
wbo2_retry_t=06
wbo2_edgetime_corr=BA
wbo2_edgetime_min=50
wbo2_ri_target=96
wbo2_nernstdc_target=9C
wbo2_pump_pw_zero=65
wbo2_calibration=B8
wbo2_heater_pid_kp=45
wbo2_heater_pid_ki=11
wbo2_heater_pid_kd=1A
wbo2_heater_pid_ilimit=81
wbo2_pump_pid_kp=15
wbo2_pump_pid_ki=4E
wbo2_pump_pid_kd=00
wbo2_pump_pid_ilimit=FF
wbo2_ri_confidence_scale=80
Current setup as downloaded from mcd
wbo2_warmup_ramp=A0
wbo2_warmup_target=FF
wbo2_abs_limit=E4
wbo2_limit_maxt=A0
wbo2_fallback=60
wbo2_retry_t=06
wbo2_edgetime_corr=BA
wbo2_edgetime_min=50
wbo2_ri_target=A1
wbo2_nernstdc_target=8F
wbo2_pump_pw_zero=E7
wbo2_calibration=64
wbo2_heater_pid_kp=46
wbo2_heater_pid_ki=10
wbo2_heater_pid_kd=1A
wbo2_heater_pid_ilimit=A0
wbo2_pump_pid_kp=30
wbo2_pump_pid_ki=01
wbo2_pump_pid_kd=00
wbo2_pump_pid_ilimit=E0
wbo2_ri_confidence_scale=80