Fail Safe Mode - Panasonic BRS1D Service Manual

3.4.

Fail Safe Mode

* Fail safe is a function for recovery of tray movement if mechanism cannot carry out tray open or close within a specified time.
Below are the fail safe specification at each position. Refer to table 2.
Fail Safe specification
state
Locked at
Motor CCW
condition
( in the case
motor can turn
CW)
Locked at
Motor CCW
condition
( in the case
motor can not
turn CW)
Locked at
Motor CW
condition
( in the case
motor can turn
CCW)
Locked at
Motor CW
condition
( in the case
motor can not
turn CCW)
Close position move to Open position→
Moror CW for 5sec
(Time out)
↓
Motor CCW to Close
position
Moror CW for 5sec (TO)
↓
Motor CCW for 5sec (TO)
↓
Loop
↓
ERROR stop (at 4th TO)
Open position move to Close position→
Moror CCW for 5sec
Motor CW to Open position
Moror CCW for 5sec (TO)
Motor CW for 5sec (TO)
ERROR stop (at 4th TO)
Table 2
13
Close position
(Time out)
↓
↓
↓
Loop
↓