Seagate ST43401N/ND, ST43402ND user manual Power requirements

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

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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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Contents Elite Disc Drive ST43401N/ND ST43402ND Contents Electrostatic discharge protection PrefaceImportant safety information and precautions Page Wichtige Sicherheitshinweise Page Page SeaFAX USA 408 438-2620 England Technical support servicesSeaFONE 408 SeaTDD 408Location Number TelephoneGeneral description ST43402ND disc drive ST43401N/ND, ST43402ND User’s Manual, Rev. B Write Read Msec Characteristics Conditions SpecificationsPage Drive functional block diagram Environmental requirements Site requirementsUmgebungsbedingungen Environmental requirements Conditions Specifications ST43401N/ND, ST43402ND User’s Manual, Rev. B Air-flow requirements Suggested air flow/Empfohlener Luftstromverlauf Räumliche Anforderungen Space requirementsMounting orientations Montageorientierungen Dimensions of the drive Laufwerkabmessungen Power requirements ST43401N/ND, ST43402ND User’s Manual, Rev. B Interface requirements Grounding requirementsST43401N/ND, ST43402ND User’s Manual, Rev. B Ground Ground Diffsens Termpwr Reserved ATN BSY ACK RST MSG SEL REQ Even pin Odd pin Signal name Numbers Unpacking Unpacking, inspection, and repackingInspection RepackingSetting the control board jumpers Installation proceduresJ4B J4A ST43402ND I/O board J09 jumpers ST43402ND I/O board J10 jumpers ST43402ND I/O board J01 and J03 jumpers Setting the voltage range Installing a power supplyMounting the power supply Attaching a bezel ST43401N/ND shown Attaching an optional bezelMounting the drive Mounting the drive ST43401N/ND shown ST43401N/ND drives Connecting the system I/O cablingST43402ND I/O cable attachment ST43402ND drivesST43401N terminator attachment-single-ended I/O ST43401ND terminator attachment-differential I/O Synchronizing the spindle Grounding the systemJ4A J4A ST43401N/ND, ST43402ND User’s Manual, Rev. B Verification Page Operation LED indicatorsLEDs on ST43401N/ND drives LED indicator Function LEDs on ST43402ND drives When it is off, the drive does not have a Scsi Operating instructions LED or indicator FunctionParts data Options and accessories Part Number Description Observing maintenance precautions MaintenanceRemoving and replacing a drive Arranging for depot repairPacking a drive for shipment