Specifications

a.
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8.3.3 M~croproc ... or Coatrol Fault ladlcator FUDCtI~
This routine removes power to the spindle motor and Rapper motor; th8 foreground interrupts are halted, and the .
f READY line is set false. The FAULT latch Is pulled and:
If no jumpers are InstaUed, or If the delay Jumper (EI) 1I1nstaDed. then aU motor power II removed
and the LED is flashed u shown In tabl. 8-2.
b. If only the exeidse Jumper (E2) IIlnstaU8d. then the microprocessor returns to System Startup and
restarts.
TABLE 1-2. LED FAULT CODeS
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: 1.. ':1
:.~
--
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. ..l:J
- -.
- Il.j
- -.
.. J
_ u,
HUMBleR OF FLASHES IOURCI Of FAULT
..
1
RESERVED.
2
RESERVED.
3
SPINDLE FAILED TO START.
.
~
SPINDLE FAILED AFTER ACHIEVING FULL SPEED SUCCESSFULLY.
5
ACTUATOR FAILED TO RESTORE TO CYUNDEA ZERO.
6
ACTUAl:oR seEK
ERROR DETECTED DURING DRIVE SELF-EXERCISE.
7
LOSS OF SPINDLE INDEX SIGNAL
•
8.3.8 Warm-up Settling ED .... loa Couatdo ...
- --
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- --
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: '.'
- ...
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. -
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.. -
.. ' .. ~
8.3.4 Seek Function Inltlallzatloa
This initializes the aduator seek function control constants and variables. The routine then goes directly to Initialize
Code End.
8.3.5 Initialize ~de £ad
This starts the 90 ".sec foreground intenupts. and th. system enters the continuous background loop by going
directly to Spindle Motor Background.
8.3.6 Spindle .Motor Background
This takes the index time flag, passed from the foreground, and determines If the speed is correct. If it is, no
changes are made and the routine goes to the Motor StatUi Monitor.
If the speed is not correct. the Index time error 11 lntegr.ted and added to the current index time error to ~etermine
and set the motor power factor. The routine then goes to the Motor Status Monitor.
8.3.7 Motor Statua Monitor
This monitors the index time to determine if the motor speed II out of tolerance. It sets the FAULT line to true if the
speed varies more the :t 1.61 percent for six revolution •. Uthe speed drops below 92 percent for more than ten
revolutions. the routine jumps to Control Fauk Indicate Fune:tton (paragraph 8.3.3). otherwise it ~s to the Warm-
up Settling Extension Countdown. .
t
A countdown of two minutes allows drive warm-up time and provides longer seek settling time during warm-up.
The routine then goes to System Background Loop Control.
8·7