Section 2
Installation and Operation
Drive
Startup
Current
Profile
12
Volt Supply - ProDrive 40S/80S Start Current Profile (Typical Average)
2
112
(A)
~
1
~~
rIIIIIIIIl
~
,
l.J
~
I
-
~
3
4
t
o
t=O,
power on
SECONDS
Power Sequencing
No damage or loss
of
data will occur if power
is
applied or removed during drive operation, except that data
may be lost in the sector being written at the time
of
power loss. In particular, the drive can sustain
transient voltages
+ 10% to -100% from nominal while powering up
or
down, as well as the shorting out or
opening up
of
either voltage
or
return line.
Power Reset Limits
+5
Volts:
4.6
to 4.5 Volts
+12 Volts: 10.2 to 9.6 Volts
When powering up, the drive will remain reset (inactive) until both reset limits are exceeded. When
powering down, the drive will become reset when either supply voltage drops below the lower threshold:
hysteresis is
50 m V minimum.
2.2
VENTILATION
The
ProDrive
operates without a cooling fan provided the ambient air temperature does not exceed 122°F
(500C).
Any user-designed cabinet should provide adequate air circulation so that this maximum air
temperature
is
not exceeded.
Installation and Operation 2 - 5
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