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I
TABLE 2-1.
CONTROLS AND INDICATORS (CONT'D)
Control or Indicator
Function
Loqic Chassis Maintenance Panel (Cont'd)
DISPLAY SELECT
switch (Cont'd)
Elapsed Time
~Meter
DRIVE
MO'l'OR
circuit
breaker
+20Y Fuses
+20Y indicator
±46,
t20,
and
:10
volt circuit breakers
Local/Remote Switch
(Applies only to drives
wi th Power Sequence
feature)
2. CYLINDER causes contents of Cylinder Address reqister
to
be
displayed.
3. DIFFERENCE causes contents of Difference Counter to
be
displayed.
This value is complement of number
trac:lcs to
go.
4. HEAD causes contents of Bead Reqister to be displayed.
S.
SUMMARY STATUS causes Summary Status (SSR) byte to be
displayed.
Refer to Table 2-2 for bit siqnificance.
6. DS82-DS87 causes
appli~able
Detailed Status byte to
be
displayed.
Refer to Table 2-2 for bit siqnificance.
The meaninqs of the Summary Status and Detailed Status
bytes are explained
in
Section 4.
~
Power Supply
Indicates cumulative hours that loqic dc power is on.
Controls application of ac voltaqe
to
spindle drive motor.
Protects 20 volt power supply transformer used to derive
+20Y sequence
and
lamp voltaqes.
DC Power Supply
Liqhts to indicate presence of +20Y voltaqe used by lamps
and power up sequence circuit.
Control application o"f related dc voltages throughout drive.
Determines whether the power on sequences of the drives in a
particular string are controlled
independent of one another
by the START switches or by the START switches working in con-
junction with a power sequence signal received from either the
controller or the first drive in the strinq.
In the local
mode, the power on sequences are controlled independently.
However, in the remote mode, pressing the START switch starts
a
power on only if the drive is receiving the Pick signal.
In remote, the drive receives the Pick signal only if all
previous drives in the strinf have completed their power on,
are in local, or are completely deenerigized (all circuit
breakers off).
The purpose of remote mode is to allow a sequential power up
of all drives in the string.
A sequential power up is accom-
plished by:
1.
Closing all circuit breakers and setting the LOCAL/REMOTE
switch of each drive to the REMOTE position.
2.
pressing the START switches to light the indicators of
each drive except the first in the string.
3.
Press the START switch to light the indicator of the
first drive.
The drives will now power up sequentially
: ______________ -tl ____
~(see
Local/Remot~
Control discussion for mor""
.i",-F~~mation
2-4
UNIT Power circuit
breaker
Main Breaker Box
Controls application of main ac power.
83318200
E
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