Xantrex Technology XMP 2600 manual Load protection, Additional usages, Ovp, Current limitation

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Advanced Features

Load protection

The events enable masks

Registered Power Module’s events can be enabled to seep in thru the status structure (using the CESE command) up to the main status byte and the SRQ generation mechanism (use the *SRE command to set the events that will generate an SRQ).

Using these events-enable masks and monitoring service requests generated by the XMP 2600 relieves the governing software from routinely checking the XMP’s or Power Module’s status.

When an SRQ event occurs, the governing software should traverse the status structure and learn of the events that caused the SRQ to be generated. Use the guidelines in the “Handling SRQ and the IEEE488.2 Status Structures” section.

Additional usages

Combining the window warning mechanism with the shutdown on non-fault events feature (described in the following sections) enables you to establish Under Voltage and Under Current protection thresholds.

Load protection

OVP and

OCP

Current limitation

Protection using the workpoint window

The XMP 2600 and its Power Modules incorporate several mechanisms that serve to protect the connected loads. The following paragraphs detail those protection mechanisms and the way to use them.

Over Voltage and Over Current Protection are threshold values that are set above a Power Module’s output settings values.

The OVP and OCP mechanisms protect the load against malfunctions in the XMP 2600 and abnormal conditions on the distribution lines.

Setting (and using) the OVP and OCP mechanisms is explained in the Basic Programming chapter.

Once a protection event (fault) occurs, the Power Module tries to shutdown its output. If the Power Module is not successful in shutting down its output it will shutdown the primary (main converter).

Note that shutting down the main converter causes all the Power Modules in the mainframe to be shutdown. See the section on Selective Shutdown for instructions on how to shutdown other Power Modules when a fault occurs.

The five current limitation schemes, described in the Basic Programming chapter, protect the load from drawing too much current.

The two foldback modes of current limiting restrict the amount of current delivered to the load once it tries to consume an excessive amount of current, offering a low short circuit current.

The retry current limitation scheme works best with a load that is reset once power is removed from its input.

The shutdown mode current limiting is to be used with very sensitive loads – the output of the Power Module is shutdown as soon as the load draws too much current.

The XMP 2600 can be instructed to treat workpoint window warnings as though they were faults (see selective shutdown, below).

Utilizing this feature gives you 4 new protection thresholds: high voltage, high current, low voltage and low current.

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 InformationPower Supply Grounding Safety SummaryDescription Power Supply Symbols 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 ApprovalsWho should use this manual About this manualChapters Terminology 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 modulesComm. time out Shutdown on non-fault eventsResponding to communication time out events Turn-on and reset behavior Time out events as reflected in the status structureCategories Ieee 488.1 BUS CommandsSystem Commands Queries GLBL? ResetGlbl GpibSettings Commands Queries Output Control Protection Read-Back Queries Commands QueriesTrigger Sync Commands 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? = Stop = Goto= OFF 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 errorsParser and Execution errors RS232 Communications errorsGpib Communications errors Status reporting Xantrex Technology Inc
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