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USER RESPONSIBLE FOR VERIFYING VERSION AND COMPLETENESS
OEM FUNCTIONAL SPECIFICATION ULTRASTAR XP (DFHC) SSA MODELS 1.12/2.25 GB - 1.0" HIGH
2.2.8 Bring-up Sequence (and Stop) Times
Figure 10. Start Time Diagram
Note: BATS is the abbreviation for Basic Assurance Tests. Start-up sequence spins up the spindle motor,
initializes the servo subsystem, up-loads code, performs BATS2 (verifies read/write hardware), resumes
"Reassign in Progress" operations, and more. For more information on the start-up sequence, refer to the
Ultrastar XP (DFHC) SSA Models Interface Specification.
Note: If a RESET is issued before the drive comes ready, the power on sequence will start again. In all
other cases when a RESET is issued the present state of the motor is not altered.
Note: Reference “Start/Stop Unit Time” on page 49 for additional details.
Note: See 5.7, “Spindle Synchronization” on page 69 for details about Start-up time increases when the
device is requested via Mode Parameters to synchronize the spindle motor to another device.
Table 3. Bring-up Sequence Times and Stop Time for C1x Models
Event Nominal Maximum Notes
Power-up 1.5 sec 2.0 sec *see Figure 10
Start-up 12.4 sec 45 sec. *see Figure 10
Spin-up 8.2 sec 29.2 sec *see Figure 10
Spindle Stop 6.0 sec 12.0 sec
Source filename=BRINGUPIBM CorporationPage 36 of 87