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54 

As a policy of continual improvement, STAUFF reserves the right to alter the specification without prior notice. 

201.031 

 

Date of Issue:  06 November 2018 

9 Related Products 

9.1 LPM Remote Display Unit 

 
 
The optional LPM Remote Display Unit is a separate accessory product allowing control of an LPM that 
is typically inaccessible via the keypad, display and USB download.  
 
The sensor itself is mounted remotely in another unit (normally a non-screened version). This allows the 
operator full control of the LPM. 
 
The LPM Remote Display Unit  

connects”in between” the incoming supply/serial connections, and the 

LPM 

sensor. It is “transparent” to the serial communications. This means that a PLC or LASPAC-View 

can operate in the usual way to control the LPM, change settings or download results, without having to 
unplug the RDU. 
 
Similar components are used for the RDU as for the normal LPM-DU option, so the same instructions 
apply for operation. See chapter 6.2.2.2 for more details. 
 
The RDU wiring details are shown in figure 6.4. 
 
Please note that the RDU cable provided must be plugged into the 

right hand

 (remote) connector of the 

LPM for it to work. 
 
Please note that the RDU only records tests whilst powered up. If tests are run without the RDU 
connected then they will have to be downloaded directly from the LPM. 
 
The RDU can be powered via the LPM or the LPM can be powered via the RDU, depending on the 
user’s requirements. 
 
The LPM Remote Display Unit is fully backward compatible with the first revision LPM products. 

 

9.2 LPMUSBInterface 

The USB Interface is a plug and play solution for easily connecting a computer to the LPM. 
 
It includes a USB:RS485 interface with a terminal block pre-wired with the LPM cable. An extra terminal 
block is provided for any customer wiring to external devices.  
 
An external DC adapter supplied can be used to power the complete system, or if the computer is 
always connected during use, power can be taken directly from the USB cable.  
Note: Computer should have mains power applied at all times. 
 
Detailed installation and usage instructions are provided in the separate product user guide. 
 

Summary of Contents for LPM-II-plus

Page 1: ...Manual Particle Monitor LPM II plus...

Page 2: ...es and the serial numbers are preceded with 16 LPM II O M O D G W E Product Manufacturer Walter Stauffenberg GmbH Co KG Im Ehrenfeld 4 58791 Werdohl Germany The products described are in conformity wi...

Page 3: ...d Storage 8 2 1 Transportation and Handling Conditions 8 2 2 Storage 8 3 Warranty Limitations and Disclaimers 9 4 Product Presentation 11 4 1 Benefits 11 4 2 Product features 11 4 2 1 Moisture Sensor...

Page 4: ...2 Fault Finding 50 7 2 1 LED Flashing Fault Codes 50 7 2 2 Test Status 51 7 2 3 Other Faults 51 7 3 Test Duration 52 8 How to Order 53 8 1 Common Features 53 9 Related Products 54 9 1 LPM Remote Disp...

Page 5: ...ce 201 031 Date of Issue 06 November 2018 11 6 SAE AS4059 REV E Cleanliness Classification for Hydraulic fluids 74 11 7 Recommendations 75 11 8 Hydraulic System Target Cleanliness Levels 76 11 9 New I...

Page 6: ...having the following meaning WARNING It relates to important information concerning the product its use or part of this documentation to which special attention must be paid DANGER It means that failu...

Page 7: ...ible danger situations that may arise and takes the appropriate precautions in order to eliminate the risks of accidents in the workplace ELECTRICIAN This is any individual whose task is to carry out...

Page 8: ...il temperatures exceeding 40 45 C it is vital to be extremely careful when handling the metal lances the hoses and when moving the unit Avoid direct contact with hot oil and with the filter body ALL E...

Page 9: ...portation and Handling Conditions The unit is shipped in a cardboard box encased in polyurethane foam The packed weight of the LPM and accessories is 2 5kg 2 2 Storage The unit should be stored in a s...

Page 10: ...lity This warranty extends to the original purchaser only or to the end user client of a Stauff authorised affiliate How to obtain service To obtain service under the terms of this warranty the custom...

Page 11: ...p the product to the customer in the first instance Any damage resulting from the use of inadequate packaging will nullify Stauff obligations under this warranty Should the customer s product be damag...

Page 12: ...ht source shines through the fluid and lands on a photodiode When a particle passes through the beam it reduces the amount of light received by the diode and from this change in condition the size of...

Page 13: ...windows based software 4 2 2 1 Data Transfer via USB Stick The U version of the LPM allows direct download via a USB memory stick With the LPM powered up plug the USB stick into the USB connector at...

Page 14: ...rox NAS 12 Calibration Each unit individually calibrated with ISO Medium Test Dust MTD based on ISO 11171 on equipment certified by I F T S ISO 11943 Moisture Temperature Measurement saturation RH and...

Page 15: ...01 031 Date of Issue 06 November 2018 5 3 Physical Attributes Dimensions 123mm H x 142mm W x 65mm D Mounting 2 holes 7mm 126mm apart Weight 1 6kg Connections M16x2 hydraulic connection Seal Material M...

Page 16: ...osity 1000 cSt Fluid temperature 25 C to 80 C Operating Flow Rate20 400ml min Maximum Pressure 420barg static For high frequency pressure pulse applications contact Stauff Differential PressureTypical...

Page 17: ...a flow of fluid is generated within the range of the unit If there is no suitable differential pressure available then a flow controller will be needed One solution is the LPM DAV pressure compensate...

Page 18: ...rface so as to allow data download remote control or diagnostics using the LASPAC View software This is the circular connector furthest from the hydraulic connection see figure 6 1 This carries RS485...

Page 19: ...f Issue 06 November 2018 Figure 6 1 Connector Orientation Figure 6 2 Machine Connector External Wiring Example 6 1 2 2 DC Power DC power is connected to pins 7 and 8 of either circular connector Red a...

Page 20: ...l is Modbus RTU Modbus is a freely available open standard for industrial control Adapters are available to interface to other industrial control busses The standard LASPAC View software from Stauff i...

Page 21: ...as short as possible e g below 2m Normally the pre wired 3m cable available for the LPM would be used with a junction box to connect to the RS485 trunk Either individual DC supplies can be used to po...

Page 22: ...to ensure testing only occurs when the hydraulic system is running For example the start signal could be wired to go on and off with the main hydraulic pump or with a solenoid valve that allows fluid...

Page 23: ...t mode 6 1 2 6 Alarm Outputs These are opto isolated switches that can be used to signal external indicators PLC inputs or other equipment e g pump on off control The exact function of these outputs i...

Page 24: ...he right to alter the specification without prior notice 201 031 Date of Issue 06 November 2018 Figure 6 7 4 20mA Example 6 1 3 Hydraulic Connection 1 High or Low Pressure Parallel Connection Figure 6...

Page 25: ...flow that is out of range will be indicated by a fault code see section 7 2 Note Results taken with out of range flows are not logged The flow is entirely generated by the differential pressure betwe...

Page 26: ...e the pressure drop by modifying the hydraulic system For example insert a check valve in the circuit with a 4 bar spring The component could also be a filter a restrictor or even a piece of piping if...

Page 27: ...PM drain outlet A suitable valve is the LPM DAV see 2 1 2 but other ones can be used too This has the effect of a flow limiter maintaining a constant flow rate even with a varying inlet pressure provi...

Page 28: ...es seem confusing note that a given colour will only ever be seen if the corresponding limit has been specifically set by the user So for example if a maximum temperature limit has not been set the vi...

Page 29: ...onally showing the particle counts and flow rate The particle sizes and count representation are automatically matched to the selected format Format Simple View Detailed View ISO4406 1999 NAS1638 AS40...

Page 30: ...ns between the LPM keyboard display circuit board and the sensor itself The third screen shows diagnostics related to CAN bus communications For more details refer to the separate LPM CAN bus manual G...

Page 31: ...o 4000 tests in the memory 6 3 1 Computer Connection The connection is made using an RS485 adaptor connected to the computer or control device The LPMUSBInterface is included as a pre wired solution f...

Page 32: ...9 To perform a test first optionally edit the Test Reference and press Apply to register the new value This is a descriptive label which can be used to identify or group the test later along with the...

Page 33: ...ton brings up the Remote Device Settings dialogue 6 3 3 Settings The LPM can be reconfigured using the Remote Device Settings dialogue This is normally done as part of the installation or commissionin...

Page 34: ...point then the test numbering sequence automatically resets and begins again 6 3 3 3 Test Duration The length of the test is controlled by the Test Duration see figure 6 21 for location The factory s...

Page 35: ...the flow due to the very low number of particles passing through the flow cell To overcome this the test has to fulfil certain conditions to create a valid result It the low flow alarm has been disab...

Page 36: ...st every 10 minutes but only log a result hourly The log interval test interval and test duration are distinct parameters that work together to control the test and data logging So that a test duratio...

Page 37: ...rm thresholds The alarm settings are comprehensive and flexible allowing the LPM to be used in many different scenarios 6 3 3 9 1 Alarm Levels The various alarm thresholds are set in the Contamination...

Page 38: ...ft blank NAS1638 Alarm Levels Figure 6 25 NAS1638 can be used by selecting this as the test Format The headings and boxes for the available settings change appropriately NAS1638 represents the overall...

Page 39: ...ode sets the precise function of the two switched alarm outputs of the LPM This allows the LPM to be used in a variety of situations Note that the conditions under which the outputs are turned on are...

Page 40: ...ng both red and green emitters which could be mounted in a control panel This external LED will then turn green amber red according to the test result in a similar way to the built in one Output 1 Gre...

Page 41: ...tting of the LPM as is done by the Stauff LASPAC View control software All results and counts are available in all supported formats We suggest using LASPAC View to initially configure the LPM and che...

Page 42: ...ly change the interpretation of the result codes and set limits if used Note If the format is changed then any set alarm limits must be changed too since these will refer to the old format E g a limit...

Page 43: ...rs shown For these standards there is a complication in that they all define an additional class 00 This is an extra cleaner than class 0 class We distinguish this from 0 using the numeric value 1 Neg...

Page 44: ...diagnostics NOTE the fault conditions are also indicated on the front panel LED while No Result in the case of a fault is indicated using special result values as previously described 6 4 1 3 3 Test...

Page 45: ...culate contamination are provided These are two groups of 8 registers representing the Upper Limit and Lower Limit for particulate contamination These are 64 71 and 72 79 respectively These are expres...

Page 46: ...be done externally to the LPM The CAN bus signals CANL and CANH are referred to the system 0V supply These should stay within the common mode range allowed by the ISO 11898 4 CAN bus standard relative...

Page 47: ...dialogue shows the default CAN bus settings The LPM transmits all data using a range of message identifiers starting at that selected If the Use Defaults button is pressed the program constructs an id...

Page 48: ...messages supported are in 11 2 See appendix 11 2 for more an example walk through and messages 6 4 3 Analogue 4 20mA Modes The LPM provides two analog 4 20mA current loop outputs A and B In order to...

Page 49: ...t available The sequence is then repeated RH Coding The RH value is encoded according to the formula mA 6 RH 10 or RH mA 6 10 So 0 RH 6mA 100 RH 16mA max legal measurement value unavailable 24mA Tempe...

Page 50: ...ers as currents using values designed for viewing directly on a programmable process meter There is no sync value but the final parameter stays on for 2 seconds instead of 1 To avoid confusion the RH...

Page 51: ...te that test result 7 2 Fault Finding 7 2 1 LED Flashing Fault Codes The LPM front panel led indicates a fault by a number of white flashes with a red background The number of flashes indicates the fa...

Page 52: ...ts to occur automatically D User has set a non zero test interval E Or fluid is totally clean no particle counts Flow alarm can be turned off by user if this is a problem for example cleaning rigs 7 2...

Page 53: ...o reduce the product test time in a production line situation A longer test time enables the unit to average out variations in cleanliness and produce a more stable result This is especially true for...

Page 54: ...atus LED to indicate fault conditions RS485 CANBUS 4 20mA communications Measurement in multiple international standard formats All units include 3m pre wired control cable and LASPAC View test analys...

Page 55: ...or more details The RDU wiring details are shown in figure 6 4 Please note that the RDU cable provided must be plugged into the right hand remote connector of the LPM for it to work Please note that t...

Page 56: ...lter the specification without prior notice 201 031 Date of Issue 06 November 2018 9 3 LPM DAV A pressure compensated flow control valve suitable for the LPM This may be needed if the application prod...

Page 57: ...18 10 Service and Recalibration Warranty The LPM is guaranteed for 12 months from date of receipt See section 3 for further details Recalibration The LPM is recommended to be recalibrated every 12 mon...

Page 58: ...is numbered the LPM has 125 registers Each register holds a number representing some quantity For example register number 2 holds a number indicating the LPM software revision 11 1 1 1 Register Numbe...

Page 59: ...ture Upper C x100 signed integer 83 Limit Temperature Lower C x100 signed integer 84 85 Log Interval Seconds Unsigned 32 bit integer 86 87 Last Download Date Unsigned 32 bit integer 88 Language Unsign...

Page 60: ...new result over temperature alarm etc In this document bits are numbered starting with bit 0 least significant bit A user programming environment such as a PLC programming system or a high level comp...

Page 61: ...inal test to confirm target level achieved 5 RESERVED 6 RESERVED 7 SIMULATE Produces simulated test results 8 LOW_FLOW_CLEAN_DISABLED Prevents spurious low flow alarms on clean systems Table 11B Test...

Page 62: ...gram and used to drive indicators for example Bit 11 is used internally to detect that the LPM is being controlled by Modbus from a PLC or by LASPAC View Finally bits 12 14 reflect the state of the LP...

Page 63: ...periodically reading data from the LPM it is not intended as a general purpose Modbus implementation For a background to this section the implementer can review the Modbus source documents http www mo...

Page 64: ...ges will hopefully be able to translate using the information provided here The LPM product ID is 0xD3DD hexadecimal or 54237 decimal This fact can be used as a check when attempting the above impleme...

Page 65: ...ow the LPM can be connected to a PC using a USB CAN adaptor The adaptor used in this example is the PCAN USB available from Peak System Technik GmbH or a distributor We also need to make up a special...

Page 66: ...from 50 150 ohms will work 11 2 1 2 Initial Configuration Initially we connect using the LPM USBInterface so that the LPM can be comfortably configured using LASPAC View Detailed information is provi...

Page 67: ...Stop Testing When Clean Off Simulate Test On NOTE Simulate Test will cause fictitious test results to be generated in order to test communications and demonstrate the unit Do not forget to turn this o...

Page 68: ...see a test result that starts high and decreases with each further test Close the Remote Control dialogue and quit the program Unplug the LPM at the circular connector 11 2 1 3 PCAN USB Software The P...

Page 69: ...ar connector It should power up and start performing a test If everything is working after about 20 seconds you should see CAN messages similar to that shown below This shows the 2nd result received T...

Page 70: ...on little endian byte order Table 11F CAN bus Parameters for J1939 Interoperation 11 2 2 2 Non J1939 CAN2 0B Users Taken together these imply a generic CAN base address of 0x18FFB53F Command and contr...

Page 71: ...ple numbers The NAS1638 standard defines classes 00 and 000 these are classes cleaner than class 0 We represent these using signed integers of value 1 and 2 respectively these will appear as 255 and 2...

Page 72: ...detect that the LPM is being controlled by Modbus from a PLC or by LASPAC View Finally bits 12 14 reflect the state of the LPM start signal input and alarm output relays 11 2 2 4 3 Message Water Senso...

Page 73: ...e water accumulating in the system in areas of low flow This can lead to corrosion and accelerated wear Similarly fire resistant fluids have a natural water content which may be different to mineral o...

Page 74: ...0 04 2 0 01 0 02 1 0 0 0 01 0 Figure 11 2 Figure 11 3 The International Standards Organization standard ISO 4406 1999 is the preferred method of quoting the number of solid contaminant particles in a...

Page 75: ...253 506 1012 2025 4050 8100 16200 32400 50 100 1 2 3 6 11 22 45 90 180 360 720 1440 2880 5760 Over 100 0 0 1 1 2 4 8 16 32 64 128 256 512 1024 Table 11 1 Contamination Level Classes according to NAS1...

Page 76: ...6 14 Motor Axial Piston Radial Piston Gear Vane 18 16 13 19 17 13 20 18 15 19 17 14 Valve Directional solenoid Pressure Control modulating Flow Control Check Valve Cartridge Valve Proportional Servo v...

Page 77: ...s can be verified Thus if no failures have occurred the average level measured may well be one which could be made a bench mark However such a level may have to be modified if the conditions change or...

Page 78: ...so not traceable to any national standard of measurement a critical requirement for today s quality management systems There was also an absence of formal controls over the distribution of the test du...

Page 79: ...sely to the previous 5 and 15 m measurements This will ensure consistency in data reporting As the counts derived by microscope counting methods are not affected the particle sizes used for microscopy...

Page 80: ...8 ACFTD ISO 4402 1991 m ISO NIST MTD ISO 11171 m c 1 4 2 2 4 6 3 5 1 4 5 8 5 6 4 6 7 1 7 7 7 8 8 4 9 9 1 10 9 8 11 10 6 12 11 3 13 12 1 14 12 9 15 13 6 16 14 4 17 15 2 18 15 9 19 16 7 20 17 5 21 18 2...

Page 81: ...following table gives a very general comparison but often no direct comparison is possible due to the different classes and sizes involved ISO4409 1999 DEF STD 05 42 Table A Table B NAS 1638 ISO 1121...

Page 82: ...sample was taken from Do use suitable glass bottles ideally certified clean to take samples along with a hand pump to reduce contamination ingress Do filter your system thoroughly before using it in...

Page 83: ...Co KG Im Ehrenfeld 4 58791 Werdohl Tel 49 23 92 916 0 Fax 49 23 92 916 103 sales stauff com Globally available through wholly owned branches and distributors in all industrial countries Full contact d...

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