Upd 217 power board
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Upd_pcb Upd_217_controller PFMENU DOCS Aiw_hardware iochan AIW_assembly
Contents
Power Board
100-002
- 12-17-08 : Reset controller when powered. Magic smoke escapes from unknown source.
- 11-29-08 : Simple verification with SC 110-205, seems operational. 5 mins of Upd_test_pattern_112608a
- 11-27-08 : Failed during high RPM test. Application of 30V suggests that all the installed TVS devices have failed. PB Led is off, no 12V supply. Bypassed Q2 and 12V supply started. Removed power, and 12V supply still worked.
Possibly used to be 110-ENG2
TODO
- needs gate drive ECO
ECOs
- has bypass TVS ECO
110-004
- 12-18-08 : u11 also has hot spot
- 12-17-08 : Applied 5.0V to R8/GND, U9 heated up.
- 12-17-08 : U3, U10 removed. R8 still has 10 ohms to ground. Cases (Drains) of 6631 fets are correct.
- 12-14-08 : seriously damaged in airport incident. U3 (ACS712 for battery) destroyed. 12V switcher works, however, 5V MD is overloaded - removed R8 (0 ohm). Also U10 seems to have mechanical damage.
- 11-30-08 : SC 110-205 ran Upd_test_pattern_112608a for 3 hrs
- 11-29-08 : simple verification with SC 110-205
- 11-26-08 : benched tested for 3 days.
- 11-26-08 : has 2.0 ohm gate drive
- 11-26-08 : has 225W TVS on bypass caps.
TODO
- remove U3, then see if 5V supply is loaded, if not then replace R8 (0 ohm)
- needs gate drive ECO
ECOs
- has bypass TVS ECO
110-005
- 11-28-08 : was not able to verify operation of TVS, so they were replaced with new 225W devices.
- 11-28-08 : With SC Upd_pcb#110-007, ran Upd_test_pattern_112608a for 36 hrs.
- 10-8-08 : installed in upright2; during power platarflexion tests heard noises of instability from motor. reduce motor filter (Q & D) to PWM max of 20k (from 30k). During one test, the motor system seized (making noise) and 17amps was coming from the battery. Afterwards, attempts to energy mode 2/3 caused 1.1amp current draw from power supply
TODO
- needs gate drive ECO
ECOs
- has bypass TVS ECO
110-007
- 11-29-08 : BROKEN - spins fine in positive direction, but negative is very broken
- 11-27-08 : appears to have failed turning overnight test. Originally - VBAT_PROT didn't make it to the 12V switcher.
- 11-26-08 : operational
TODO
- needs TESTING
ECOs
- has bypass TVS ECO
110-008
- 12-18-08 : Replaced U1 (12v switcher) and completed (gate driver ECO)
- 12-04-08 : started Upd_test_pattern_112608a with SC 110-006 - ran from 1am to 8.30am. Motor temperature was 124F
- 12-04-08 : reworked the schottky diodes - seems to be okay.
- 11-26-08 : is operational, but seems like it might be warm. I=180mA in mode 3, 0 torque. Added schottky and still gets warm (Hot). Upto 280mA depending on motor angle.
TODO
- diagnose large power draw
ECOs
- has bypass TVS ECO
- has gate drive ECO
