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22 Cheetah 10K.6 FC Product Manual, Rev. B
Figures 6, 7 and 8 identify the drive +5V current profiles for each model ST3146807FC, ST3733307FC and
ST336607FC, respectively. The current during the various times is as shown:
T0 Power is applied to the drive.
T1 Controller self-tests are performed.
T2 Spindle begins to accelerate under current limiting after performing internal diagnostics.
T3 Spindle is up to speed and the Head-Arm restraint is unlocked.
Figure 6. Typical ST3146807FC drive +5V current profile