Emerson NT5C06D user manual Contents

Page 8

8 Contents

Forced Load Share

32

Load Share Adjustment Procedure

32

Operation

33

Front panel controls

34

Features

34

Local float / equalize control

34

High voltage shutdown (HVSD) - local

34

High voltage shutdown - remote

34

Start-up delay

35

Test points (V+, V-)

35

Indicators

35

Rectifier failure alarm (RFA)

35

Fan failure alarm

35

Internal high voltage shutdown (HVSD)

35

Local ON/OFF control (AC breaker)

36

Remote ON/OFF control

36

Remote voltage sensing

36

Sense fail alarm (SEN FAIL)

36

Current limiting

36

Soft start / walk-in

36

AC inrush current

36

Sequential start

37

Parallel operation

37

Discharge of output capacitors

37

Input AC voltage monitor

38

Thermal shutdown

38

Remote high voltage shutdown

38

Local / remote high voltage shutdown reset

38

Remote equalize control

38

Power interface edge connector

38

Signal interface connector

39

Maintenance

41

Float / equalize

41

High voltage shutdown (HVSD)

42

Cooling fan

42

Fan replacement

43

Power shelf

45

Troubleshooting

47

Alarm indication

47

UM5C06D ( 169-2071-504 ) P0831010 Standard 7.00 May 2001

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Contents Helios Rectifier 25/48 Single Phase -48V, 25 a P0831010 Standard 7.00 MayPage Helios Rectifier 25/48 Single Phase -48V, 25A Page Publication history This page is left blank intentionally Contents Contents List of Procedures List of FiguresShelf List of TablesThis page is left blank intentionally Introduction DescriptionEquipment Identification MPS75 NT5C10CX  power shelf 23-inchApplications MPS75 Modular Power Shelf-NT5C10C with 8-pin signal cables NT5C06D Switch Mode Rectifier Electrical specifications SpecificationsElectrical specifications Efficiency and Power Factor Output noise and rippleReliability Heat DissipationStorage Environmental specifications OperatingTransportation Specifications Tools and test equipment Installation and start upInstalling the power shelf Wiring the power shelf Procedure 1 Installing the power shelf Step ActionInstalling the AC power AC cable wire sizeAWG for each rectifier Max for each rectifierDC Conductors Installation Power shelf individual AC connectionControl and Alarm Connections Connecting the DC power shelfRectifier Failure Alarm Rectifier 1 fail alarmRectifier 2 fail alarm Rectifier 3 fail alarmAC Line Fail Alarm Fan AlarmDC Circuit Breaker Sense FailA0384387 SIG NAL Cables FRO M Shelves Verification Installing the rectifierFactory setting Procedure 4 Starting up the rectifier Step High Voltage Shutdown Hvsd AdjustmentFloat Voltage Adjustment Rectifier meter accuracy= 52.2 + .15 V = 52.35 Load Sharing Ii Forced ShareCurrent Limit Verification CL Load Share Adjustment Procedure Procedure 5 Adjusting the load share Step ActionSlope Load Share Forced Load ShareOperation Features Front panel controlsLocal float / equalize control High voltage shutdown Hvsd localStart-up delay IndicatorsRectifier failure alarm RFA Fan failure alarmSense fail alarm SEN Fail Local ON/OFF control AC breakerRemote ON/OFF control Remote voltage sensingDischarge of output capacitors Sequential startParallel operation Local / remote high voltage shutdown reset Power interface edge connectorInput AC voltage monitor Thermal shutdownSignal interface connector Power interface connectionsControl signal connections Float / equalize MaintenanceProcedure 6 Adjusting the float / equalize Step Fan failure High voltage shutdown HvsdCooling fan Fan replacement NT5C06D rear view Power shelf This page is left blank intentionally System fault diagnosis Fault symptom Possible causes TroubleshootingAlarm indication RFA fault SEN Fail fault Erratic load faultCurrent or voltage float fault Fault symptom Possible causesAppendix a Replacement parts CPCAppendix a Replacement parts Country Appendix B Technical service assistanceLocal toll-free prefixes United States Canada Europe Asia and the Pacific Appendix B Technical service assistanceToll-free technical assistance numbers List of terms and acronyms Rectifier Fail Alarm Normally OpenNorthern Telecom Sense FailPage Part of Emerson Network Power