TDK 1500W, 750W Under Voltage Limit UVL, Foldback Protection, Output ON/OFF Control

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5.4UNDER VOLTAGE LIMIT (UVL)

The UVL prevents adjustment of the Output Voltage below a certain limit. The combination of UVL and OVP functions, allow the user to create a protection window for sensitive load circuitry.

5.4.1Setting the UVL level

Setting the UVL can be made when the power supply output is Enabled (On) or Disabled (Off). To set the UVL level, press the OVP/UVL button TWICE, so that the CURRENT meter shows “UUL”. The VOLTAGE meter shows the UVL setting level. Rotate the VOLTAGE encoder knob to adjust the UVL level. The display will show ‘UUL” and the setting value for 5 seconds after the adjustment has been completed and then will return to its previous state.

UVL setting values are limited at the maximum level to approximately 95% of the Output Voltage set- ting. Attempting to adjust the UVL above this limit will result in no response to the adjustment attempt. The minimum UVL setting is zero.

5.5FOLDBACK PROTECTION

Foldback protection will shut down the power supply output if the load current exceeds the current limit setting level. This protection is useful when the load circuitry is sensitive to an overcurrent condi- tion.

5.5.1Setting the Foldback protection

To arm the Foldback protection, the FOLD button should be pressed so that the FOLD LED illumi- nates. In this condition, transition from Constant Voltage to Constant Current mode will activate the Foldback protection. Activation of the Foldback protection disables the power supply output, causes the ALARM LED to blink and displays “Fb” on the VOLTAGE meter.

5.5.2Resetting activated Foldback protection

There are four methods to reset an activated Foldback protection.

1.Press the OUT button. The power supply output is enabled and the Output Voltage and Current will return to their last setting. In this method, the Foldback protection remains armed, therefore if the load current is higher than the current limit setting, the Foldback protection will be activated again.

2.Press the FOLD button to cancel the Foldback protection. The power supply output will be dis- abled and the VOLTAGE display will show “OFF”. Press the OUT button to enable the power sup- ply output.

3.Turn the power supply output Off and then On using the SO control (refer to Section 5.7). In this method the Foldback protection remains armed, therefore if the load current is higher than the output current setting, the Foldback protection will be activated.

4.Turn the power supply Off using the AC On/Off switch, wait until the front panel display turns Off, then turn the unit back ON again. The power supply output is enabled and the Output Voltage and Current will return to their last setting. In this method, the Foldback protection remains armed, therefore if the load current is higher than the output current setting, the Foldback protection will be activated again.

5.6OUTPUT ON/OFF CONTROL

The Output On/Off Enables or Disables the power supply output. Use this function to make adjust- ments to either the power supply or the load without shutting off the AC power. The Output On/Off can be activated from the front panel using the OUT button or from the rear panel J1 connector. The OUT button can be pressed at any time to Enable or Disable the power supply output. When the out- put is disabled, the Output Voltage and Current fall to zero and the VOLTAGE display shows “OFF”.

5.7OUTPUT SHUT-OFF (SO) CONTROL VIA REAR PANEL J1 CONNECTOR

Contacts 2, 3 and 15 of J1 (Fig.4-2, Item 5) serve as Output Shut-Off (SO) terminals. The SO termi- nals accept a 2.5V to 15V signal or Open-Short contact to disable or enable the power supply output. The SO function will be activated only when a transition from On to Off is detected after applying AC power to the unit. (Thus, in Auto-Restart mode, the output will be Enabled after applying

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83-507-013 Rev. D

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Contents Genesystm 750W/1500W Page Page Genesys Manual Supplement Table of Contents Front and Rear Panel Controls and Connectors ………...……… Remote Analog PROGRAMMING……………………………………………… Isolated Analog Programming OPTION………………………………… Limitation of Warranty Warranty ServiceDisclaimer Trademark InformationSafety Instructions Environmental Conditions SICHERHEITS-INSTALLATIONS Anweisungen Umweltbedingungen Sicherheits-und WarnsymboleAnderungen and Bauteileersatz Features and options General InformationIntroduction General DescriptionMultiple output power system Control via the serial communication portAnalog voltage programming and monitoring Parallel operationAccessories Specifications ChapterVout Supplemental Characteristics Genesystm 750W & 1500W Power Supplies Outline Drawings Installation GeneralPreparation for USE Initial InspectionsAC Input Power Connection LOCATON, Mounting and CoolingAC Source Requirements Rack Mount Slides optionalAC Input Connector, 1500W models AC Input Connector, 750W modelsAC Input Wire Connection, 1500W models AC Input CordPrior to Operation TURN-ON Checkout ProcedureGeneral Constant Voltage Check Constant Current CheckOVP Check UVL CheckConnecting the Load Wire termination AWGMaking the load connections 6V to 60V Models Noise and Impedance EffectsInductive loads Wire terminal lug 2 places 80V to 600V ModelsLoad wires connection to the output connector Connecting multiple loads, radial distribution method Connecting single loads, local sensing defaultConnecting single loads, remote sensing 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 IndicatorsAuxiliary Function Rear Panel Connections and Controls Rear panel connections and controlsRear Panel SW1 Setup Switch Resetting the SW1 switch 1 SW1 position functionRear Panel J1 Programming and Monitorng Connector Making J1 connectionsSignal EnainIfcom LocalLocal Operation Constant Voltage ModeConstant Current Mode Setting 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 ControlPsok Signal ENABLE/DISABLE Control VIA Rear Panel J1 ConnectorCV/CC Signal Over Temperature Protecton OTP Last Setting MemoryAuto-restart mode Safe-start modeSeries Operation Series connection for increased output voltageSeries connection for positive and negative output voltage Series connection for positive/negative output voltagesParallel Operation Advanced parallel configuration Setting the units as Master or SlaveMaster and Slave units default operation Connection to the loadAST OFF *OUT OFF To release units from Slave modeCurrent display accuracy DAISY-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 Option Factory Installed 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 DescriptionOutput Control Commands Initialization Control CommandsID 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 TimeTest if MD Mode is Installed Addressed commands without response Acknowledge SRQ1010 None Disable retransmission of SRQs by GEN750W models GEN1500W models Current programming range STATUS, Error and SRQ Registers 10.6 Status Control CommandsConditional Registers Status RegistersService 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 Specifications Isolated Analog Programming Option1 0-5V/0-10V Option PN IS510 PPM/CIsolated Programming & Monitoring Connector Setup and Operating Instructions Maintenance Fuse Rating OUP
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