Xantrex Technology XMP 2600 manual Reprogramming Delay, Retry, Shutdown on current limit

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Basic Programming

Linear foldback

When the linear output foldback mode of operation is selected (using the FOLD <ch>,2 command), when the output current of the Power Module reaches its limiting value, output voltage and output current are reduced (depending on the characteristics of the connected load) down to 0 volts and 30% of the set current (for an output short-circuit).

Reprogramming Delay

V

Vset operating

range

I

Iset

Non-linear foldback

When the non-linear output foldback mode of operation is selected (using the FOLD <ch>,3 command), when the output current of the Power Module reaches its limiting value, output voltage drops but the output current is held at its limiting value (depending on the characteristics of the connected load). This continues until output voltage has dropped down to 70% of the set value. From that point on, output voltage and output current are reduced (depending on the characteristics of the connected load) down to 0 volts and 30% of the set current (for an output short-circuit).

Vset

V

operating

range

I

Iset

Retry

When the retry current limiting mode of operation is selected (using the FOLD <ch>,1 command), the output of the Power Module will shutdown for 3 seconds when the output current reaches its limiting value. Following the 3 seconds off time, the output of the Power Module will be reactivated. If during the next second the output current is still at its limiting value, the output will be shutdown again. This process is repeated 5 times. After the

fifth consecutive shutdown, the output of the Power Module remains shut and a fault event is generated.

V

fault

t

Shutdown on current limit

This operating mode is useful when the connected load can be reset (and thus the cause of the excessive current eliminated) by removing the power that feeds it.

This mode of output current limiting (selected using the FOLD <ch>,4 command) is suitable for very sensitive loads. When this operating mode is selected, the output of the Power Module is shutdown as soon as the output current reaches its limiting value.

Reprogramming Delay

When the output of a Power Module is changed (new set values are programmed or it is turned on or off) some transient phenomenon might occur. These transients in the output’s voltage or current are due to the output’s settings, output’s capacitance and the connected load.

The transients in the Power Module’s output need to be ignored so they will not generate warnings or faults. This is achieved by defining a period of time (called the Reprogramming Delay period) in which the Power Module ignores transients in its output. The Reprogramming Delay period is activated following every programmed change in the Power Module’s output.

XMP 2600 Programming Manual rev. 1.1

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Contents Xantrex Multiple Output Power System XMP XMP Warranty Limited What does this warranty cover and how long does itHow do you get service? Last?What does this warranty not cover? Disclaimer ProductInformation About Your Power Supply InformationDescription Power Supply Symbols Safety SummaryPower Supply Grounding Do Not Open The Unit Air Inlets And Air Outlet Input Mains Voltage RatingOutput Voltages Nonoperative ModulesPower Supply Safety Regulatory Approvals and Safety Agency ComplianceSafety Agency Compliance Regulatory ApprovalsChapters Terminology About this manualWho should use this manual Table of contents Basic Programming Commands and Queries Reference Error Codes summary Byte1Interfacing XMP Gpib interfaceSerial interface ACKProgramming messages formats Listening FormatsTalking Formats Response Data SeparatorUsing the Gpib bus How to communicate with the XMPUsing the comm. channels Using an RS232 linkUsing commands Recovering from communication haltsUsing queries Programming the XMPRecommendations on using the XMP Initialize the XMPQuery installed Power Modules Enforce power-on conditionsSetup the XMP 2600 status system Identify the XMPSetup system level protection shutdown features Initial setup of the Power ModulesActivation Protection setupOutput settings Status reportingOn-going usage of the XMP Using advanced featuresHandling SRQ and the IEEE488.2 Status Structures Use queriesEvent registers Event enable registersStatus registers Mask registersOutput message Queue Main status byteMain controller events Responding to SRQ eventsRemote communication time out Summary of power modules statusPower modules status structure Primary engine status structureFaults Register What happens when power is turned onError Code Events RegisterUsage Guidelines Basic setup and usage Output SetupPower Module output rating Overview of output setup parametersOutput activation Output settingsOutput control Globally enabling the outputsFoldback Voltage / current modeCurrent limiting schemes Polarity and disconnect relaysShutdown on current limit Reprogramming DelayRetry Linear foldbackBasic Programming Usage guidelines Setting the window thresholdsWorkpoint window warning Enabling the window thresholdsVoltage mode example Using the events mechanismUsing the warnings Checking the statusAdditional usages Protection using the workpoint windowLoad protection OVPSet output to stored values Arm, trigger, sync and rampTrigger mechanism Toggle the output state on/offSync output What is output ramping? Output rampingOutput ramping initiation Output ramping setupSynchronization of operations Simultaneous operationsOther operations Using hardware Trig and Sync to serialize operationsOutput on/off Sequential OperationsUsing software OPC mechanism to serialize operations Controller notification of Operation CompleteShutdown grouping single, group, global Commands to program shutdown groupingSelective shutdown Different shutdown grouping of modulesResponding to communication time out events Shutdown on non-fault eventsComm. time out Turn-on and reset behavior Time out events as reflected in the status structureSystem Commands Queries Ieee 488.1 BUS CommandsCategories GLBL? ResetGlbl GpibSettings Commands Queries Output Control Protection Trigger Sync Commands Queries Commands QueriesRead-Back Queries Status Reporting Commands Queries Synch Alphabetical reference MnemonicParameters None Category System Type Sequential PRE Stores settings of all the Power Modules same as STO command Result register Syntax Return two decimal numbers, in the range 0 to 255. Each bit Cmask Close relay and a value of 1 is returned for an open relay Remove a user message from the XMP 2600 front panel display Set-up the operating mode of the XMP 2600. Re-calculate rqs Response is a series of values one for each installed Power Return output Current measurement of the Power Module. Return the state of the XMP 2600 Local Lock Flag. a value Ocrst Decimal value in the range 0 to Syntax Presence of the Polarity Reversal Relay Option Parameters None Category Settings Type Sequential Master mainframe. For the XMP 2600 this value is String in the following format mssnnn where m=minutes Result is two decimal numbers the first being the level 0t o SN? = OFF = Goto= Stop Module. Result is a decimal number in the range 0 to Shut-down when a remote communication time out occurs. Time out feature Syntax Minus sigh Syntax VLIM? Vset Commands and Queries Reference Ieee 488.2 compatible Status Structures Events RegisterEvents Enable Register Faults RegisterError Code Output RegisterEvents Filtering Positive Mask Register Events Filtering Negative Mask RegisterStandard Event Status Register read with *ESR? PON CME EXE DDE QYE OPCPrimary Status Register read with PSR? Primary Event Status Register read with PER?Status Byte Register read with *STB? PrimerrPower Modules Self Test ResultsByte Main ControllerErrors Detected by the Main Controller Error Codes summaryPower Modules Errors Reported by the Power Module Main Power Modules Communications errorsGpib Communications errors RS232 Communications errorsParser and Execution errors Status reporting Xantrex Technology Inc
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