CMS/User Guide - Filterteknik

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18 Modbus ProgrammingThe CMS can be controlled via commands on its serial (RS485)interface, using the Modbus RTU protocol. It is possible to controlevery aspect and setting of the CMS, as is done by the RMF SystemsCMS-View control software. All results and counts are available inall supported formats. One scenario is to use CMS-View to initiallyconfigure the CMS, then the customer-written software only has toread the test results. This could be used to integrate the CMS measurementswith a general machine control, vehicle control or factorymonitoring system.Customers wishing to implement their own modbus controller softwarewill need to refer to the full CMS Modbus Programming Manual– however a simple example is given here.18.1 Reading the Result CodesThe simplest arrangement is to configure the CMS to test continuously,with a set interval between tests. For example a Test Durationof 2 minutes and a Test Interval of 10 minutes. The Start TestingAutomatically selection can be used so that the unit does not requirea start signal.Then, the most recent test results can be read from the appropriateModbus Registers.Register Function56 4µm(C) Result Code57 6µm(C) Result Code58 14µm(C) Result Code60 Modbus Programming
Measuring Water in Hydraulicand Lubricating FluidsAppendix AFrom North Notts Fluid Power CentreIn mineral oils and non aqueous fire resistant fluids water is undesirable. Mineraloil usually has a water content of 50-300 ppm which it can support withoutadverse consequences.Once the water content exceeds about 500ppm the oil starts to appear hazy.Above this level there is a danger of free water accumulating in the system inareas of low flow. This can lead to corrosion and accelerated wear. Similarly,fire resistant fluids have a natural water content which may be different tomineral oils.Saturation LevelsSince the effects of free (also emulsified)water is more harmful thanthose of dissolved water, water levelsshould remain well below thesaturation point. However, evenwater in solution can cause damageand therefore every reasonableeffort should be made to keep saturationlevels as low as possible.There is no such thing as too littlewater. As a guideline, we recommendmaintaining saturation levelsbelow 50% in all equipment.Measuring Water Content 61
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CMSContamination Monitoring System
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Contents1 Introduction 7•Operatin
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E Recommendations 69F Hydraulic Sys
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2 How to OrderExample: CMS - W M K
Page 10 and 11: It comprises a USB:RS485 interface
Page 12 and 13: Moisture &TemperatureMeasurementDat
Page 14 and 15: 4 Status LEDAll CMS versions have a
Page 16 and 17: 5 Front Panel Operation5.1 Result D
Page 18 and 19: SimpleDetailedFigure 5.4 AS4059E Ta
Page 20 and 21: 6 Water SensorCMS-W models measure
Page 22 and 23: 7 Data LoggerThe CMS includes a bui
Page 24 and 25: 9 USBi Optional Computer USBInterfa
Page 26 and 27: is separately available as a pre-wi
Page 28 and 29: 11 PC Software OperationThe Remote
Page 30 and 31: 12 SettingsThe CMS can be reconfigu
Page 32 and 33: The factory set value of 2 minutes
Page 34 and 35: large particles in the system. When
Page 36 and 37: NAS1638 can be used by selecting th
Page 38 and 39: This allows the CMS to switch exter
Page 40 and 41: Turns on When Test Complete ≤Lowe
Page 42 and 43: • If there is no suitable differe
Page 44 and 45: 14.1 DC PowerDC power is connected
Page 46 and 47: supplies can be used to power each
Page 48 and 49: Other ways to start a test are:•
Page 50 and 51: 15.1 Flow Rate15.1.1 SummaryFor the
Page 52 and 53: • See the figures at the start of
Page 54 and 55: 15.3 Active Flow ControlThis is onl
Page 56 and 57: allows a system to remotely monitor
Page 58 and 59: 17 Cycle Time and Flow RateConsider
Page 62 and 63: Appendix ATypical Water Saturation
Page 64 and 65: Appendix BMicroscope counting exami
Page 66 and 67: Appendix DSAE AS4059 REV.E Cleanlin
Page 68 and 69: Appendix DSize μm(c) >4 >6 >14 >21
Page 70 and 71: Appendix Efluids which are cleaner
Page 72 and 73: Appendix FContamination Correspondi
Page 74 and 75: Appendix GISO therefore defined the
Page 76 and 77: Appendix GTo clarify matters still
Page 78 and 79: Appendix Gbut often no direct compa
Page 80: Appendix G80 New ISO Medium Test Du
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CMS/User Guide - Filterteknik

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