ABB REC 523 Technical Reference Manual

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ABB REC 523 Technical Reference Manual Manual pdf 34 page image

341MRS750881-MUMRemote Monitoring and Control UnitTechnical Reference ManualREC 523heating limit. For more information about the parameters of the PSC board, refer tothe CD-ROM Technical Descriptions of Functions (refer to Section 1.8. Relateddocuments).Cooling is needed if the environmental conditions may cause the temperature insidethe cabinet to rise above the operation limit. The figure below shows an example ofa CAP application used for controlling a cooler. In this example, the temperaturemeasured by REC 523 is forwarded to the COMH_1 function via the inputPSC_7_Temperature, the value of which is compared to the values of the parametersHlimit and Llimit. If the value of the input is higher than or equal to thetemperature defined with the Hlimit parameter, the PSC_7_SO1 output isswitched on. Accordingly, if the temperature is lower than or equal to the valuedefined with the Llimit parameter, the output is switched off.A050001Fig. 5.3.4.-1 Example of a CAP application used for controlling a cooler5.3.5. Battery voltage measurementThe REC 523 device incorporates measurement of the battery voltage. Themeasured value can be forwarded to the control centre. The dead band of the voltagechange report is defined by the voltage delta parameter of the PSC board. For moreinformation about the parameters of the PSC board, refer to the CD-ROM, TechnicalDescriptions of Functions, see Section 1.8. Related documents.Note that the indications and parameters used for heater controlshould not be used when a cooler is controlled. < 25<*<&$ !"' :$":$"25<*<5 =.5.5