Manuals / Seagate / Computer Equipment / Computer Drive

Seagate ST43401N/ND Grounding requirements, Interface requirements, SCSI bus configuration

Models: ST43402ND ST43401N/ND

1 64

Download 64 pages 11.82 Kb

Page 27

Grounding requirements

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

17

Grounding requirements

A safety ground must be provided by the site AC power system. The green wire (or green wire with yellow stripe) in the AC power cord provides the safety ground connection between the power supply and the site AC power system. The site AC power system must provide the safety ground to earth ground connection.

All site AC power connection points, including convenience outlets for test equipment, must be maintained at the same safety ground potential.

Interface requirements

An important part of site preparation is planning the layout and routing of I/O cables. All drives and other SCSI devices are connected together and to the host with an I/O cable. TheSCSI bus can have up to 16 devices attached to it as shown inFigure 7.TheI/O cabling scheme used is called a daisy chain. Each end of the SCSI bus must be terminated.

Term

SCSI

Device

0

SCSI

Device

1

SCSI

Device

2

SCSI

Device

3

Term

SCSI

Device

15

SCSI

Device

14

SCSI

Device

13

SCSI

Device

12

Figure 7. SCSI bus configuration

Image 27

Seagate ST43401N/ND, ST43402ND user manual Grounding requirements, Interface requirements, SCSI bus configuration

Contents

User’s Manual Elite Disc Drive ST43401N/ND ST43402NDPreface ContentsInstallation MaintenanceElectrostatic 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 viiiSeaTDD 408 Technical support servicesSeaFAX USA 408 438-2620 England SeaFONE 408Telephone Locationnumber Figure 1. ST43401N/ND disc drives Section 1. General descriptionFigure 2. The ST43402ND disc drive ST43401N/ND, ST43402ND User’s Manual, Rev. BConditions Table 1. Drive specificationsCharacteristics SpecificationsCharacteristics WriteRead msecPage Controller Figure 3. Drive functional block diagramUnit SCSIEnvironmental requirements Section 2. Installation/Abschnitt 2. InstallationSite requirements Voraussetzungen am AufstellungsortConditions SpecificationsST43401N/ND, ST43402ND User’s Manual, Rev. B Table 2. Environmental requirementsTechnische Daten ST43401N/ND, ST43402ND User’s Manual, Rev. BTabelle 2. Umgebungsbedingungen des Laufwerkes BedingungenAir-flow requirements in reverse direction side to side Above unit Under unitAbove unit Note. Air flows in the direction shown orRäumliche Anforderungen Space requirementsUp Up Up Figure 5. Mounting orientations Montageorientierungen149.35 mm Figure 6. Dimensions of the drive Laufwerkabmessungen82.55 mm 3.25 in 203.20 mmCurrent with Internal Power requirementsTable 3. Single drive voltage and current requirements Current without InternalST43401N/ND, ST43402ND User’s Manual, Rev. B Grounding requirements Interface requirementsFigure 7. SCSI bus configuration ST43401N/ND, ST43402ND User’s Manual, Rev. B Even pin Signal nameSignal name Table 4. Unshielded single-ended I/O cabling P cableEven pin Signal nameSignal name Table 5. Unshielded differential I/O cabling P cableEven pin Signal nameSignal name ST43401N/ND, ST43402ND User’s Manual, Rev. BRepacking Unpacking, inspection, and repackingUnpacking InspectionSetting the control board jumpers Installation proceduresSpindle Sync PinsFigure 8. ST43401N/ND control board jumpers = Non-applicable jumper not relevant to the option discussed= Jumper connected = Jumper not connected Figure 9. ST43402ND control board jumpersFigure 10. ST43402ND I/O board J09 jumpers SCSI ID = A Ground this pin to manually reset the SCSI boardFigure 11. ST43402ND I/O board J10 jumpers Used only if the PSS pin jumper is not connectedFigure 12. ST43402ND I/O board J01 and J03 jumpers Terminator Power J01A is forInternal terminator power to I/O A & BInstalling a power supply Setting the voltage rangeMounting 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 Connecting the system I/O cabling ST43401N/ND drivesFigure 15. ST43401N/ND I/O cable attachment Figure 16. ST43402ND I/O cable attachment ST43402ND drivesFigure 17. ST43401N terminator attachment-single-ended I/O Mounting Holes in Control Board Terminator Power Source JumperTerminator TerminatorResistor-Pak Resistor-Paks note orientation part number 96752447 PinFigure 18. ST43401ND terminator attachment-differential I/O Terminator Resistor-Paks part number 70906701 Terminator PowerSource Jumper Terminator Resistor-Pak note orientation Terminator Socket PinGrounding the system Synchronizing the spindleFigure 19. System diagram for spindle sync Figure 20. Making ST43401N/ND spindle sync connections Cable from Preceding Unit A B Cable to Next Unit Control Board Slave SelectFigure 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. BLED indicator FunctionTable 6. LED functions for ST43401N/ND drives Figure 23. LEDs on ST43402ND drives Board Port A Enabled LED green Port B Active LED redPort B Enabled LED green Socket for Active LED red Heartbeat LED green Ready LED green ControlLED indicator FunctionTable 7. LED functions for ST43402ND drives This LED is off when port B does not have a SCSI LED or indicatorOperating instructions This LED is on when port B is actively executing aSection 4. Parts data Table 8. Options and accessories Part number Description Observing maintenance precautions Section 5. MaintenanceArranging for depot repair Removing and replacing a drivePacking a drive for shipment Page Seagate Technology, Inc 920 Disc Drive, Scotts Valley, CA 95066-4544, USAPublication Number 83327720, Rev. B, Printed in USA