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Seagate ST43401N/ND Power requirements, Single drive voltage and current requirements, Terminator

Models: ST43402ND ST43401N/ND

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ST43401N/ND, ST43402ND User’s Manual, Rev. B

Power requirements

The voltage and current requirements for a single drive at cylinder 0 are shown in Table 3. Ensure that your power supply meets these requirements.

Table 3. Single drive voltage and current requirements
	Current without Internal			Current with Internal
		Terminator			Terminator
		Seeking	Contin-		Seeking	Contin-
		and	uous		and	uous
Voltage	Idle	Reading	Reading	Idle	Reading	Reading
SCSI single-ended interface (ST43401N)
+5V	1.8A	1.9A	1.9A	1.8A	1.9A	1.9A
+12V	1.8A	1.8A	1.8A	1.8A	1.8A	1.8A
Watts	30.6W	31.1W	31.1W	30.6W	31.1W	31.1W
SCSI differential interface (ST43401ND)
+5V	1.9A	2.2A	2.3A
+12V	1.8A	1.8A	1.8A
Watts	31.1W	32.6W	33.1W
SCSI dual-port differential (ST43402ND)
+5V	3.0A	3.6A	3.7A
+12V	1.8A	1.8A	1.8A
Watts	36.6W	39.6W	40.1W

continued

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Seagate ST43401N/ND Power requirements, Single drive voltage and current requirements, Current without Internal, Seeking

Contents

User’s Manual Elite Disc Drive ST43401N/ND ST43402NDInstallation ContentsMaintenance PrefaceElectrostatic discharge protection PrefaceImportant safety information and precautions ST43401N/ND and ST43402ND User’s Manual, Rev. B Wichtige Sicherheitshinweise ST43401N/ND, ST43402ND User’s Manual, Rev. B ST43401N/ND, ST43402ND User’s Manual, Rev. B viiiSeaFAX USA 408 438-2620 England Technical support servicesSeaFONE 408 SeaTDD 408Location Telephonenumber Figure 1. ST43401N/ND disc drives Section 1. General descriptionFigure 2. The ST43402ND disc drive ST43401N/ND, ST43402ND User’s Manual, Rev. BCharacteristics Table 1. Drive specificationsSpecifications ConditionsRead Writemsec CharacteristicsPage Unit Figure 3. Drive functional block diagramSCSI ControllerSite requirements Section 2. Installation/Abschnitt 2. InstallationVoraussetzungen am Aufstellungsort Environmental requirementsST43401N/ND, ST43402ND User’s Manual, Rev. B SpecificationsTable 2. Environmental requirements ConditionsTabelle 2. Umgebungsbedingungen des Laufwerkes ST43401N/ND, ST43402ND User’s Manual, Rev. BBedingungen Technische DatenAir-flow requirements Above unit Above unit Under unitNote. Air flows in the direction shown or in reverse direction side to sideRäumliche Anforderungen Space requirementsUp Up Up Figure 5. Mounting orientations Montageorientierungen82.55 mm 3.25 in Figure 6. Dimensions of the drive Laufwerkabmessungen203.20 mm 149.35 mmTable 3. Single drive voltage and current requirements Power requirementsCurrent without Internal Current with InternalST43401N/ND, ST43402ND User’s Manual, Rev. B Interface requirements Grounding requirementsFigure 7. SCSI bus configuration ST43401N/ND, ST43402ND User’s Manual, Rev. B Signal name Signal nameTable 4. Unshielded single-ended I/O cabling P cable Even pinSignal name Signal nameTable 5. Unshielded differential I/O cabling P cable Even pinSignal name Signal nameST43401N/ND, ST43402ND User’s Manual, Rev. B Even pinUnpacking Unpacking, inspection, and repackingInspection RepackingSetting the control board jumpers Installation proceduresFigure 8. ST43401N/ND control board jumpers Sync Pins= Non-applicable jumper not relevant to the option discussed Spindle= Jumper connected = Jumper not connected Figure 9. ST43402ND control board jumpersFigure 10. ST43402ND I/O board J09 jumpers Figure 11. ST43402ND I/O board J10 jumpers Ground this pin to manually reset the SCSI boardUsed only if the PSS pin jumper is not connected SCSI ID = AInternal terminator power to I/O Terminator Power J01A is forA & B Figure 12. ST43402ND I/O board J01 and J03 jumpersSetting the voltage range Installing a power supplyMounting the power supply Figure 13. Attaching a bezel ST43401N/ND shown Attaching an optional bezelMounting the drive Figure 14. Mounting the drive ST43401N/ND shown ST43401N/ND drives Connecting the system I/O cablingFigure 15. ST43401N/ND I/O cable attachment Figure 16. ST43402ND I/O cable attachment ST43402ND drivesTerminator TerminatorResistor-Pak Mounting Holes in Control Board Terminator Power Source JumperResistor-Paks note orientation part number 96752447 Pin Figure 17. ST43401N terminator attachment-single-ended I/OSource Jumper Terminator Resistor-Paks part number 70906701 Terminator PowerTerminator Resistor-Pak note orientation Terminator Socket Pin Figure 18. ST43401ND terminator attachment-differential I/OSynchronizing the spindle Grounding the systemFigure 19. System diagram for spindle sync Figure 20. Making ST43401N/ND spindle sync connections Slave Select Cable from Preceding Unit A B Cable to Next Unit Control BoardFigure 21. Making ST43402ND spindle sync connections ST43401N/ND, ST43402ND User’s Manual, Rev. B Verification Page Section 3. Operation LED indicatorsFigure 22. LEDs on ST43401N/ND drives ST43401N/ND, ST43402ND User’s Manual, Rev. BFunction LED indicatorTable 6. LED functions for ST43401N/ND drives Port B Enabled LED green Board Port A Enabled LED green Port B Active LED redSocket for Active LED red Heartbeat LED green Ready LED green Control Figure 23. LEDs on ST43402ND drivesFunction LED indicatorTable 7. LED functions for ST43402ND drives Operating instructions LED or indicatorThis LED is on when port B is actively executing a This LED is off when port B does not have a SCSISection 4. Parts data Table 8. Options and accessories Part number Description Observing maintenance precautions Section 5. MaintenanceRemoving and replacing a drive Arranging for depot repairPacking a drive for shipment Page 920 Disc Drive, Scotts Valley, CA 95066-4544, USA Seagate Technology, IncPublication Number 83327720, Rev. B, Printed in USA

Power requirements

Table 3. Single drive voltage and current requirements

Current without Internal

Current with Internal

Terminator

Seeking

Contin-

uous

Voltage

Idle

Reading