TDK 750W HALF RACK technical manual Series connection for positive and negative output voltage

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Remote programming in series operation for increased output voltage:

1. Programming by external voltage:

The analog programming circuits of this power su- ply are referenced to the negative output potential. Therefore, the circuits used to control each series connected unit must be separated and floated from each other.

2.Using the SO function and PS_OK signal:	The Shut-Off and PS_OK circuits are referenced to
	the isolated interface common, IF_COM (J1-2,3).
	The IF_COM terminals of different units can be
	connected to obtain a single control circuit for the
	power supplies connected in series.
3. Programming by external resistor:	Programming by external resistor is possible. Refer
	to Section 6-5 for details.
4. Programming via the Serial	The communication port is referenced to the
	IF_COM which is isolated from the power supply
	output potential. Therefore power supplies con-
	nected in series can be daisy-chained using the
	Remote-In and Remote-Out connectors. Refer to
	Chapter 7 for details.

5.14.2 Series connection for positive and negative output voltage

In this mode, two units are configured as a positive and negative output. Set the Output Current limit of each power supply to the maximum that the load can handle without damage. It is rec- ommended that diodes be connected in parallel with each unit output to prevent reverse voltage during start-up or in case one of the units shuts down. Each diode should be rated to at least the power supply rated output voltage and output current. Refer to Fig.5-3 for this operating mode.

+LS +S

POWER + SUPPLY -

-LS -S

+LS +S

POWER + SUPPLY -

-LS -S

(*)

(*)

+

-

(*) Diodes are user supplied.

Fig.5-3: Series connection for positive/negative output voltages

40

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 Sicherheits-und Warnsymbole Anderungen and BauteileersatzUmweltbedingungen Features and options General InformationIntroduction General DescriptionMultiple output power system Control via the serial communication portAnalog voltage programming and monitoring Parallel operationAccessories Specifications ChapterFront Panel Supplemental Characteristics Genesystm Genh 750W Power Supplies Outline Drawings Installation GeneralPreparation for USE Initial InspectionsSingle unit installation Rack MountingAC Input Power Connection LOCATION, Mounting and CoolingAC Source Requirements GENH/RM Rack Mounting outline drawingsTURN-ON Checkout Procedure AC Input ConnectorAC Input Cord GeneralConstant Voltage Check Constant Current CheckOVP Check UVL CheckConnecting the Load Wire termination AWGNoise and Impedance Effects Inductive loadsMaking the load connections 6V to 60V ModelsBus-bars shield mounting 80V to 600V Models 83-507-5002 Rev. B Connecting single loads, local sensing default Connecting single loads, remote sensingConnecting multiple loads, radial distribution method Multiple load connection with distribution terminals Grounding outputsSense wiring Output Terminal GroundingLocal and Remote Sensing Local sensing10.4 J2 sense connector technical information Remote sensingFront and Rear Panel Controls and Connectors Front Panel Controls and IndicatorsVoltage Auxiliary Function Rear Panel Connections and Controls Rear panel connections and controls Number DescriptionRear Panel SW1 Setup Switch 1 SW1 position functionRear Panel J1 Programming and Monitoring Connector Resetting the SW1 switchMaking J1 connections 83-507-5002 Rev. B Signal EnainIfcom LocalConstant Voltage Mode Constant Current ModeLocal Operation Standard OperationSetting the OVP level Resetting the OVP circuitOver Voltage Protection OVP Automatic CrossoverOutput SHUT-OFF SO Control VIA Rear Panel J1 Connector Under Voltage Limit UVLFoldback Protection Output ON/OFF ControlENABLE/DISABLE Control VIA Rear Panel J1 Connector CV/CC SignalPsok Signal Over Temperature Protecton OTPLast Setting Memory SAFE-START and AUTO-RESTART ModesSeries Operation Series connection for increased output voltageSeries connection for positive and negative output voltage Series connection for positive/negative output voltagesSetting up the Master unit Setting up the Slave unitsParallel Operation Basic parallel operationSetting Over Voltage protection Setting Foldback protectionAdvanced parallel configuration Setting the units as Master or SlaveMaster and Slave units default operation To release units from Slave modeCurrent display accuracy 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 ConfigurationRear Panel RS232/RS485 Connector 6 RS232/RS485 port in Local modeFront panel in Remote mode MD Mode Description MD Mode enable Serial communication modeMD Mode SRQ MD Mode SRQ RetransmissionConnecting Power Supplies to RS232 or RS485 BUS Single power supplyCommunication Interface Protocol Error Messages Command SET DescriptionInitialization Control Commands ID Control CommandsOutput Control Commands DVC? FilterFILTER? OUT?Global Output Commands Single Byte Commands Enable MD Mode MD Mode Option RequiredDisable SRQ retransmission MD Mode Option Required Enable SRQ retransmission MD Mode Option RequiredAddressed commands with response Read registers Print Power On TimeRetransmit Last Message Test if MD Mode is Installed Addressed commands without response Acknowledge SRQRe-enable SRQ with out reading/clearing the Seve Register 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 RegisterPower supply set-up Serial Communication Test SET-UPCommunication Test Specifications Isolated Analog Programming Option1 0-5V/0-10V Option PN IS510 PPM/CIsolated Programming & Monitoring Connector Setup and Operating Instructions Maintenance OUP Fuse Rating