TDK 750W HALF RACK technical manual Setting Over Voltage protection, Setting Foldback protection

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During operation, the Slave units operate as a controlled current source following the Master Output Current. It is recommended that the power system be designed so that each unit supplies up to 95% of its current rating because of the imbalance which may be caused by cabling and connection voltage drop.

3.Setting Over Voltage protection

The Master unit OVP setting should be programmed to the desired OVP level. The OVP set- ting of the slave units should be programmed to a higher value than the Master OVP. When the Master unit shuts down, it programs the Slave unit to zero Output Voltage. If a Slave unit shuts down (when its OVP is set lower than the Master Output Voltage), only that Slave unit would shut down, and the remaining Slave units would supply all the load current.

4.Setting Foldback protection

Foldback protection, is desired, may only be used with the Master unit. When the Master unit shuts down, it programs the Slave units to zero Output Voltage.

5.Connection to the load

In parallel operation, power supplies can be connected in local or remote sensing. Refer to Fig. 5-4 and 5-5 for typical connections of parallel power supplies. The figures show connec- tion of two units, however the same connection method applies for up to 4 units.

5.15.2 Advanced parallel operation

In this method, multiple supplies can be configured to parallel operation as a single power supply. The total load current and output voltage are displayed by the Master unit and can be readback from the Master unit. The Slave units display only their operating status (On, Off or Fault condi- tion).

Refer to the following procedure to configure multiple supplies for Advanced parallel operation.

1.Advanced parallel configuration

∙SW1 position 2 - Down in the Master Supply and up in all Slave Supplies.

∙Connect a short between J1-8 and J1-12 in all Slave Supplies.

∙Connect J1-25 of the Master Supply to J1-10 of all Slave Supplies.

∙Connect J1-16 of the Master Supply to J1-15 of the ‘First’ Slave Supply.

∙Connect J1-16 of the ‘First’ Slave Supply to J1-15of the ‘Second’ Slave Supply (if any)

∙Connect J1-16 of the ‘Second’ Slave Supply to J1-15 of the ‘Third’ Slave Supply (if any)

∙Connect J1-16 of the ‘Last’ Slave Supply to J1-15of the Master Supply

∙Connect J1-2 (or J1-3) common to all supplies

∙Select Local or Remote sense - Ref. Figures 5-4 and 5-5

2.Setting the units as Master or Slave

a)Depress and hold the FINE button for 3 seconds. The Master/Slave configuration will be dis- played on the Current Display. Rotate the CURRENT encoder to obtain the desired mode. Refer to Table 5-4 for the CURRENT display and modes of operation.

CURRENT Display

Operating Mode

H1

Single supply (default)

H2

Master supply with 1

Slave supply

H3

Master supply with 2

Slave supplies

H4

Master supply with 3

Slave supplies

S

Slave supply

 

Table 5-4: Setting mode of operation

b)When the desired configuration is obtained, depress and release the FINE button or wait approx. 5 seconds.

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83-507-5002 Rev. B

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Contents Genesystm 750W Half Rack Page Page Genesys Manual Supplement Table of Contents Front and Rear Panel Controls and CONNECTORS………... ……… ……… Isolated Analog Progamming Option ……………………………..…… Warranty Safety Instructions Safety Instructions SICHERHEITS-INSTALLATIONS Anweisungen Umweltbedingungen Sicherheits-und WarnsymboleAnderungen and Bauteileersatz Introduction Features and optionsGeneral Information General DescriptionAnalog voltage programming and monitoring Multiple output power systemControl via the serial communication port Parallel operationAccessories Specifications ChapterFront Panel Supplemental Characteristics Genesystm Genh 750W Power Supplies Outline Drawings Preparation for USE InstallationGeneral Initial InspectionsSingle unit installation Rack MountingAC Source Requirements AC Input Power ConnectionLOCATION, Mounting and Cooling GENH/RM Rack Mounting outline drawingsAC Input Cord TURN-ON Checkout ProcedureAC Input Connector GeneralOVP Check Constant Voltage CheckConstant Current Check UVL CheckConnecting the Load Wire termination AWGMaking the load connections Noise and Impedance EffectsInductive loads 6V to 60V ModelsBus-bars shield mounting 80V to 600V Models 83-507-5002 Rev. B Connecting multiple loads, radial distribution method Connecting single loads, local sensing defaultConnecting single loads, remote sensing Multiple load connection with distribution terminals Grounding outputsLocal and Remote Sensing Sense wiringOutput Terminal Grounding Local sensing10.4 J2 sense connector technical information Remote sensingVoltage Front and Rear Panel Controls and ConnectorsFront Panel Controls and Indicators Auxiliary Function Rear Panel Connections and Controls Rear panel connections and controls Number DescriptionRear Panel SW1 Setup Switch 1 SW1 position functionMaking J1 connections Rear Panel J1 Programming and Monitoring ConnectorResetting the SW1 switch 83-507-5002 Rev. B Ifcom SignalEnain LocalLocal Operation Constant Voltage ModeConstant Current Mode Standard OperationOver Voltage Protection OVP Setting the OVP levelResetting the OVP circuit Automatic CrossoverFoldback Protection Output SHUT-OFF SO Control VIA Rear Panel J1 ConnectorUnder Voltage Limit UVL Output ON/OFF ControlENABLE/DISABLE Control VIA Rear Panel J1 Connector CV/CC SignalLast Setting Memory Psok SignalOver Temperature Protecton OTP SAFE-START and AUTO-RESTART Modes Series Operation Series connection for increased output voltageSeries connection for positive and negative output voltage Series connection for positive/negative output voltagesParallel Operation Setting up the Master unitSetting up the Slave units Basic parallel operationAdvanced parallel configuration Setting Over Voltage protectionSetting Foldback protection Setting the units as Master or SlaveCurrent display accuracy Master and Slave units default operationTo release units from Slave mode AST OFF OUT OFFDAISY-CHAIN Connection Front Panel LockingUnlocked front panel Locked front panelRemote Analog Programming LOCAL/REMOTE Analog IndicationDown Remote voltage programming connectionResisitive Programming of Output Voltage and Current Limit Remote resistive programmingRemote Monitoring of Output Voltage and Current RS232 & RS485 Remote Control ConfigurationFront panel in Remote mode Rear Panel RS232/RS485 Connector6 RS232/RS485 port in Local mode MD Mode SRQ MD Mode DescriptionMD Mode enable Serial communication mode MD Mode SRQ RetransmissionConnecting Power Supplies to RS232 or RS485 BUS Single power supplyCommunication Interface Protocol Error Messages Command SET DescriptionOutput Control Commands Initialization Control CommandsID Control Commands FILTER? DVC?Filter OUT?Global Output Commands Disable SRQ retransmission MD Mode Option Required Single Byte CommandsEnable MD Mode MD Mode Option Required Enable SRQ retransmission MD Mode Option RequiredRetransmit Last Message Addressed commands with response Read registersPrint Power On Time Re-enable SRQ with out reading/clearing the Seve Register Test if MD Mode is InstalledAddressed commands without response Acknowledge SRQ 110x STATUS, Error and SRQ Registers Status Control CommandsConditional Registers TXDService Request Enable and Event Registers BITFault Enable Register Fault Event RegisterStatus Enable Register Status Event RegisterCommunication Test Power supply set-upSerial Communication Test SET-UP 1 0-5V/0-10V Option PN IS510 SpecificationsIsolated Analog Programming Option PPM/CIsolated Programming & Monitoring Connector Setup and Operating Instructions Maintenance OUP Fuse Rating
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