Fujitsu M2361A Customer Engineering Manual page 104

h. Servo Off-Track (Status 7)
Indicates the following fault conditions.
1. ~he head is +100 micro-inches off the desired track during the
Write/Read operation.
2. Write/Read Gate is received by the drive during not On Cylinder
status, heads in motion or seek error.
(5) Access Status
Indicates access status of the head in Seek and RTZ operation. It also
indicates start and stop sequence of the spindle motor.
a. DE Sequence Check (Status 0)
State No.
0
1
3
2
6
7
5
4
Indicates that an abnormal start/stop sequence of the DE occurred in
the drive. Latch 4, Latch 2, and Latch 1 of DE SEQ represent the
various DE sequence status as shown in the Table 4.5.3.
One of the following errors occurred as DE Sequence State advanced:
1. Initial State Good (Motor At Speed and Hall Alarm not present)
does not result in State 1.
2. Run State Good (not Hall Alarm and Motor At Speed are sent out)
cannot be obtained for approximately 40 seconds in State 3.
3. Run State Good goes off during State 6.
It cannot be cleared by the Fault Clear Switch on the operator panel
or Fault Clear signal on the interface but only by stopping rotation
of the spindle.
Table 4.5.3 Contents of DE Sequence Latches
Latch 4 Latch
2
Latch 1 Status
0 0
0 Wait status
0 0 1 The START/STOP switch on the operator panel is set
to START.
0 1 1 The spindle motor starts rotating.
0 1 0 Sequence Rezero starts approximately 40 seconds
after State 3.
1 1 0 Sequence Rezero is completed and seek operation is
possible.
1 1 1 DE Stop Sequence State results and the head begins
to return to the home position. (Go
Home)
1
0 1
Go
Home operation is completed and the spindle
motor stops rotating.
1
0 0 Approximately 40 seconds have passed since State 5.
(Returns to State 0.)
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