Sanyo Format 550 Digital Channels, Digital Channel Cooling Main, System Channel

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2.4. FORMAT 550 DIGITAL CHANNELS

The Format 550 programming system fitted to the cabinet has the following digital channel functions. A number of the channels are for the control of the cabinet and are usually automatically selected on or off by the programmer as required to achieve particular conditions. If applicable, other user designated channels are also detailed below. All digital channels are shown on the monitor and program screens of the Format 550 programmer.

Full operating instructions for the Format 550 programmer are given in Part 2 of this manual.

DIGITAL CHANNEL 1

COOLING (MAIN)

*

SYSTEM CHANNEL

This channel switches the main cooling mode on (see section 3.2). The main cooling mode is used to:

a)enable programmed temperature pull down from +70°C, ie: the fall rate is controlled.

b)enable freejall temperature pull down from the cabinet's maximum temperature, ie: the fall rate is as fast as possible.

c)enable temperature dwells below +40°C (auxiliary cooling is used between +40°C and +15°C if high humidity control is required).

d)extract heat dissipated from the test load between +70°C and the minimum operating temperature.

e)enable the cooling coil's low surface temperature to dehumidify the cabinet between +5°Cand+70°C.

DIGITAL CHANNEL 2

COOLING (AUXILIARY)

SYSTEM CHANNEL

This channel switches the auxiliary cooling mode on. The indirect cooling mode is used to:

a)control temperature dwells with high humidities between approx. +15°C and +60°C.

b)extract heat dissipated from the test load during temperature dwells. The capacity of the auxiliary cooling mode to extract heat from the test load is limited.

DIGITAL CHANNEL 4

HUMIDIFIER (VPG)

SYSTEM CHANNEL

This channel determines when "steam" injection from the vapour phase generator system is available to the program controller.

This channel is always enabled when a humidity setting is programmed into the Format 550 programmer.

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Contents Environmental Chamber Sanyo GallenkampCustomer De Ronde Programming system Contents Part ONE the Cabinet Commissioning U.K. Customers only Health & Safety at WorkSanyo Gallenkamp service & maintenance facilities IntroductionCabinet Data Specification PhysicalFalse roof Exterior/finishInsulation ShelfOptional Facilities Specification PerformanceCF1 Digital Channel Cooling Auxiliary Format 550 Digital ChannelsDigital Channel Cooling Main System ChannelUser Programmable Channel Digital Channel 8 Voltage Free Terminal VFTPrinciple and Airflow DESCRIPTI0NRefrigeration unit control Temperature ControlHeating CoolingRelative Humidity Control Vapour phase generationRelative Humidity RH Relative Humidity DeterminationRelative Humidity Decrease Cabinets not requiring on-site commissioning InstallationAccessories & Spares PositioningInstrument compartment Drain Ambient TemperaturePower Supply Mains Interrupt BridgeEither Distilled Water SupplyWetwicks Test Load ProtectionVent 13. RS232 ConnectorSafety Thermostat Cable PortMains INDICATORS/PUSHBUTTONSReset Amber pushbutton Control Panel InstrumentationTo Shut Down the Cabinet Normal Sequence Cabinet and Program Start UPCabinet and Program Shut Down To Start the CabinetMonth Maintenance and CareMaintenance Schedule Weekly or between testsInspection and replacement of the wet wicks Maintenance MethodsInterior and exterior cleaning Cleaning of cabinet drainsDistilled water filter Check safety thermostatClean the refrigeration condenser LubricationAppendix 1 Part Numbers Operation InstallationMaintenance Appendix 2 REC/W Water SystemSystem draining Deioniser replacementPart 2 Format 550 Instructions ContentsFormat digital channels Introduction to FormatHow to use these instructions Menu system Getting startedUsing the data entry windows Using the on-line helpFunction keys Types of data entry field Status barPage General Operating Sequence Steady State Mode Condition settingCondition monitoring Resetting steady state setpointsEnding manual control Main Menu General Operating Sequence Entering a NEW ProgramGeneral Operating Sequence Running a Program Condition C %RH Status LoggingWriting a Program How to use Format programming sheetsEntering the data into the programmer Selecting digital channels when you know bestLoading and saving programs Log Running a programHolding a program Program Monitor WindowProgram deletion Program completionView program graph Starting Data Logging Introduction to Data LoggingLog Displaying Results Stopping Data LoggingLoading into Spreadsheets Setting Alarms Introduction to AlarmsPage Host PC System Requirements C0MPUTER InterfacingIntroduction Computer InteractiveSetting UP OFF-LINE Chamber Intelligence InstallationInstalling the Security KEY Configuring the Host SoftwareMain Menu Network Monitoring ModeSteady State Control Logging ProgramPrintouts Program Physical Layer Definition Computer interactive interfacing main protocolCommunications Frame Definition Packet Count HeaderSerial Number Length Data Block Compatibility with RS485 Multi-Controller ConfigurationData Block Length Serial NumberFunctional Layer Definition Controller Configuration RequestController Configuration Packet Flow SummaryStatus Request 129Page Open File for Reading Read Data Close FileWrite Block to File Open File for WritingSET Controller to Local Access Mode SET Controller to Remote Access ModeSET/CHANGE Steady State Condition ENABLE/DISABLE Manual Hold ENABLE/DISABLE Guaranteed SoakDigital Channel Description Computer RS232 Format 550 socket Pin D type Cable connectionsCDR Support software Control Loops Appendix 1 Technical SpecificationOperating temperature Operator interface data entryData Logging AlarmsProgram Run Options Monitoring displaysTemp Hum LS Rep Digital Channels Ddhhmmss C Appendix 2 Program Looping and Nested LoopsLoop Instructions ExampleEvent statement time = event actual time total looping time Calculation for Succeeding EventsEffects on the Running Timebase Display Nested LoopsSeconds Example of Nested Loops Format Programming Sheet Appendix 3 Format 550 Programming SheetsLEU ORE Contact Information

550 specifications

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