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18
Table 2.
DC power requirements (Amps)
Voltage regulation
Max. start current
3, 6, 9
Peak DC
Delayed motor start
1, 4
(max)
Peak operating current
Typical DC
Maximum (peak)
1
Measured with an average reading DC ammeter. Instanta-
neous +12V current peaks will exceed these values.
2
A –10% tolerance is permissible during initial start of the spin-
dle but must return to ±5% before reaching 10,000 RPM. The
±5% must be maintained after the drive signifies that its
power-up sequence has been completed and that the drive is
able to accept selection by the host initiator.
3
See the +12V current profile in the Cheetah 9 Product Manual
(publication number 83329170).
4
This condition occurs when the Motor Start option is enabled
and the drive has not yet received a Start Motor command.
5
See "Conducted noise immunity" in the Cheetah 9 Product
Manual. The specified voltage tolerance is inclusive of ripple,
noise, and transient response.
ST19101
N, W, WC models WD, DC models
+5V
5
± 5%
0.93
0.79
1
0.89
7
1.03
Cheetah 9 Installation Guide, Rev. B
8, 10
8
+12V
2
± 5%
3.22
0.12
1.48
2.7
8
+5V
+12V
± 5%
± 5%
0.99
3.22
0.83
0.12
1.1
1.48
—
2.7
8
2
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