Difference between revisions of "Upd pcb"
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=Power Board= | =Power Board= | ||
==100-002== | ==100-002== | ||
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| + | *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. | ||
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Possibly used to be 110-ENG2 | Possibly used to be 110-ENG2 | ||
Revision as of 21:53, 27 November 2008
- Operational:
- SC : 205, 09, 08
- PB : 004
Contents
Robert Todo
- When U39 is removed - save and send to Linear Tech for failure analysis
- Verify operation of RE40 encoder new motor test stand. Appears to not be working
- Rewire 8-cell A123 battery pack to 7cell.
- programming cable in PCB repair box is bad.
- Build Vclamp8 with NEW PFET and 35w resistor
- Ship 1 Vclamp8 to UPD
CEB todo
- check IW experiment, get code at IW, add to SVN
- get ankle statemachine running
- build ankle
- think about EC30 connectors for maxon
- review DY schematics
- resend code to Matt Raurer
- verify Q15 operation of code on MC
- MC feedforward.
- verify that PSER1C board has GND from USB to target
- current measurement PCB (with Y voltage measure)
- encoder breakout boards
- SG breakout boards
- new WIFI wireless
State / Motor Controller
100-8A (BF2)
- Motor control NOT operational (State operational)
TODO
- diagnose problem
- ??? needs force power on ECO
- needs battery voltage ECO
110-006
- 11-26-08 : NEEDS U39 replaced
- 11-25-08: Not operational
- 11-19-08 : traced MC power. Found that 3.3V supply only goes 1V - applied 3.3V from prg adpt and MC booted. Forced R155 high and 5V MC supply worked.
- 11-19-08 : appears that MC switcher is bad. Apply 3.3V to ISP, SC boots, but MC does not.
- 11-8-08 : requires external device to hold it on...
- 10-6-08 : installed in UP#3
TODO
- replace U39
ECOs
110-007
- 11-26-08 : operational
- 11-26-08 : R102 missing this is a pull up on the real time clock
- 11-26-08 : added R141 to GND ECO (force power on)
- 11-25-08 : Applied power, not operational
- 11-19-08 : Applied power, seems to run okay.
- 11-19-08 : Needs 3.3V to poweron status : component gets hot.
- 10-8-08 : received from UPD - tested - seems to be DOA
- 10-7-08 : received by UPD
- 10-6-08 : died in ankle while using the battery and under high current load - traced to 3.3V motor controller supply not working. Was used with power board that has TVS installed on caps, and external TVS were also used. Died
- 10-5-08 : installed in UP#3, made battery measurement ECO
TODO
- install R102
- verify that current filter caps are correct
ECOs
110-008
- 11-26-08 : appears that the motor controller dsPIC is unpowered.
- 11-19-08 : Rob added GND connection to keep board powered on (either at TP93 or otherside R141)
- 11-19-08 : Applied 3.3V to ISP header and SC booted.
- 11-19-08 : IMU #2 connected, push switch and won't power up
- 10-5-08 : need to evaluate
- 10-4-08 : Removed from UP#3, as randomly powers on at ~10hz due to noise? possibly damaged due to the pushbutton that WAS attached.
- 10-1-08 : Modified for auto-off : requires external signal for power on, has MC battery voltage ECO
TODO
- Diagnose failure
ECOs
110-009 (BF1)
- 11-26-08 : operational, but missing CAP in middle row (C142?)
11-20-08 : Needs the 24 pin flex connect to be replaced. (replaced 11-25-08)- 11-19-08 : Needs battery measurement modification.
- 11-8-08 : has jumper wire to turn self on, but wouldn't boot until IMU attached. After first power, remove IMU and works fine.
TODO
- Replaced missing cap C142?
- needs battery voltage ECO
110-205
- 11-26-08 : needs 3.3V to be applied to get started.
- 11-25-08 : flex connector replaced
TODO
- needs force power on ECO
ECOs
Power Board
100-002
- 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
- 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
- needs gate drive ECO
ECOs
- has bypass TVS ECO
110-005
- 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
- 11-26-08 : operational
TODO
- needs gate drive ECO
ECOs
- has bypass TVS ECO
110-008
- 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
