TDK 750W, 1500W Over Voltage Protection OVP, Automatic Crossover, Setting the OVP level

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-Enabled output, power supply in Constant Voltage mode: Press the PREV button and then rotate the CURRENT encoder knob. The CURRENT meter will show the programmed Output Current for 5 seconds after the adjustment has been completed, and then will return to show the actual load current.

-Enabled output, power supply in Constant Current mode: Rotate the CURRENT encoder knob to adjust the Output Current.

4.Adjustment resolution can be set to Coarse or Fine adjustment. Press the FINE button to select between the Coarse and Fine resolution. The FINE LED turns On when the resolution is set to FINE.

5.2.3 Automatic Crossover

If the power supply operates in Constant Voltage mode, while the load current is increased to greater than the current limit setting, the power supply will automatically switch to Constant Current mode. If the load is decreased to less than the current limit setting, the power supply will automatically switch back to Constant Voltage mode.

5.3 OVER VOLTAGE PROTECTION (OVP)

The OVP circuit protects the load in the event of a remote or local programming error or a power sup- ply failure. The protection circuit monitors the voltage at the power supply sense points and thus pro- vides the protection level at the load. Upon detection of an Over Voltage condition, the power supply output will shut down.

5.3.1Setting the OVP level

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

The minimum setting level is approximately 105% of the set Output Voltage, or the value in Table 7-6, whichever is higher. The maximum setting level is shown in Table 5-1.

To preview the OVP setting, press the OVP/UVL pushbut- ton so that the CURRENT display will show “OUP”. At this time, the VOLTAGE display will show the OVP setting. Af- ter 5 seconds, the display will return to its previous state.

Model

Max.

 

OVP

6V

7.5V

8V

10.0V

12.5V

15.0V

20V

24.0V

30V

36.0V

40V

44.0V

50V

57.0V

Model

Max.

 

OVP

60V

66.0V

80V

88.0V

100V

110.0V

150V

165.0V

300V

330.0V

600V

660.0V

 

 

5.3.2Activated OVP protection indications

Table 5-1: Maximum OVP setting levels

When the OVP is activated the power supply output shuts down. The VOLTAGE display shows “OUP” and the ALARM LED blinks.

5.3.3Resetting the OVP circuit

To reset the OVP circuit after it activates:

1.Reduce the power supply Output Voltage setting below the OVP set level.

2.Ensure that the load and the sense wiring are connected properly.

3.There are four methods to reset the OVP circuit.

a)Press the OUT button.

b)Turn the power supply Off using the AC On/Off switch, wait until the front panel display turns Off, then turn the power supply On using the AC On/Off switch.

c)Turn the power supply output Off and then On using the SO control (refer to Section 5.7). In this method the power supply should be set to Auto-Restart mode.

d)Send an OUT 1command via the RS232/RS485 communication port.

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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………………………………… Trademark Information Limitation of WarrantyWarranty Service DisclaimerSafety Instructions Environmental Conditions SICHERHEITS-INSTALLATIONS Anweisungen Anderungen and Bauteileersatz Sicherheits-und WarnsymboleUmweltbedingungen General Description Features and optionsGeneral Information IntroductionParallel operation Multiple output power systemControl via the serial communication port Analog voltage programming and monitoringAccessories Chapter SpecificationsVout Supplemental Characteristics Genesystm 750W & 1500W Power Supplies Outline Drawings Initial Inspections InstallationGeneral Preparation for USERack Mount Slides optional AC Input Power ConnectionLOCATON, Mounting and Cooling AC Source RequirementsAC Input Cord AC Input Connector, 1500W modelsAC Input Connector, 750W models AC Input Wire Connection, 1500W modelsGeneral TURN-ON Checkout ProcedurePrior to Operation UVL Check Constant Voltage CheckConstant Current Check OVP CheckConnecting the Load AWG Wire terminationInductive loads Noise and Impedance EffectsMaking the load connections 6V to 60V Models 80V to 600V Models Wire terminal lug 2 placesLoad wires connection to the output connector Connecting single loads, remote sensing Connecting single loads, local sensing defaultConnecting multiple loads, radial distribution method Grounding outputs Multiple load connection with distribution terminalsLocal sensing Sense wiringOutput Terminal Grounding Local and Remote SensingRemote sensing 10.4 J2 sense connector technical informationFront Panel Controls and Indicators Front and Rear Panel Controls and ConnectorsAuxiliary Function Rear panel connections and controls Rear Panel Connections and ControlsRear Panel SW1 Setup Switch 1 SW1 position function Resetting the SW1 switchMaking J1 connections Rear Panel J1 Programming and Monitorng ConnectorLocal SignalEnain IfcomConstant Current Mode Constant Voltage ModeLocal Operation Automatic Crossover Setting the OVP levelResetting the OVP circuit Over Voltage Protection OVPOutput ON/OFF Control Output SHUT-OFF SO Control VIA Rear Panel J1 ConnectorUnder Voltage Limit UVL Foldback ProtectionCV/CC Signal ENABLE/DISABLE Control VIA Rear Panel J1 ConnectorPsok Signal Safe-start mode Over Temperature Protecton OTPLast Setting Memory Auto-restart modeSeries connection for increased output voltage Series OperationSeries connection for positive/negative output voltages Series connection for positive and negative output voltageParallel Operation Connection to the load Advanced parallel configurationSetting the units as Master or Slave Master and Slave units default operationCurrent display accuracy To release units from Slave modeAST OFF *OUT OFF Locked front panel DAISY-CHAIN ConnectionFront Panel Locking Unlocked front panelLOCAL/REMOTE Analog Indication Remote Analog ProgrammingRemote voltage programming connection DownRemote resistive programming Resisitive Programming of Output Voltage and Current LimitRemote Monitoring of Output Voltage and Current Configuration RS232 & RS485 Remote Control6 RS232/RS485 port in Local mode Rear Panel RS232/RS485 ConnectorFront panel in Remote mode MD Mode SRQ Retransmission MD Mode Option Factory Installed MD Mode DescriptionMD Mode enable Serial communication mode MD Mode SRQSingle power supply Connecting Power Supplies to RS232 or RS485 BUSCommunication Interface Protocol Command SET Description Error MessagesID Control Commands Initialization Control CommandsOutput Control Commands OUT? DVC?Filter FILTER?Global Output Commands Enable SRQ retransmission MD Mode Option Required Single Byte CommandsEnable MD Mode MD Mode Option Required Disable SRQ retransmission MD Mode Option RequiredAddressed commands without response Acknowledge SRQ Addressed commands with response Read registersPrint Power On Time Test if MD Mode is Installed1010 None Disable retransmission of SRQs by GEN750W models GEN1500W models Current programming range 10.6 Status Control Commands STATUS, Error and SRQ RegistersStatus Registers Conditional RegistersBIT Service Request Enable and Event RegistersFault Event Register Fault Enable RegisterStatus Event Register Status Enable RegisterSerial Communication Test SET-UP Power supply set-upCommunication Test PPM/C SpecificationsIsolated Analog Programming Option 1 0-5V/0-10V Option PN IS510Isolated Programming & Monitoring Connector Setup and Operating Instructions Maintenance OUP Fuse Rating
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