multiflex panel mount
Contents
1. Used to totalise on the display in flow units larger than those entered at Pr 46 max flow rate Enter 0 Multiples by 1 1 Multiples by 0 1 2 Multiples by 0 01 3 Multiples by 0 001 4 Multiples by 0 0001 5 Multiples by 0 00001 6 Multiples by 0 000001 7 Multiples by 0 0000001 e g If Pr 46 is entered as litres at Pr 48 enter 3 to totalise the flow in cubic metres Ref PANEL MANUAL LMPIM 2 26 Pr 49 Pr 50 SECTION 4 Control External Counter D 0 00 If Pr 20 is set to 5 Totaliser Drive then enter the amount which each relay trip is to represent in totalised units See example 5 on page 39 e g If litres entered at Pr 46 and Pr 48 is 0 then to totalise in cubic metres enter 1000 If an entry is made at Pr 48 for the internal totaliser then to use the same unit for an external counter enter 1 After making entries in Pr 49 go to Pr 98 to clear and initiate totaliser Penstock Control D 1 Enter 1 Nodrive 2 Penstock control The control system uses relays and 2 to drive a penstock up and down respectively to maintain the flow in a channel within certain limits The designations for relays 1 and 2 are ignored but the following values have to be set Pr 9 Top flow limit In units defined by Pr 10 Bottom flow limit Pr 46 entry Pr 12 Width of drive pulse seconds Pr 13 Time between drive pulses seconds See example 6 on page 40 The penstock drive consis2. De energise when set value is reached d normally de energised Energise when set value is reached Failsafe functions are detailed in Pr 23 27 The relays can be programmed to give both high and low alarm or control levels e g High alarm Set 2 0m Low Alarm Reset 0 5m Reset 1 8m Set 0 2m The system will automatically configure itself as high or low alarm depending on which of the set and reset entries has the higher value Note that on distance measurement only Pr 1 2 the highest value is furthest from the transducer Defaults are O for relay designations 8 11 14 17 and 20 Defaults are 0 00 for relay settings 9 amp 10 12 amp 13 15 amp 16 18 amp 19 and 21 amp 22 Ref PANEL MANUAL LMPIM 2 20 SECTION 4 The relays are controlled from parameters 8 22 as follows Relay 1 Relay2 Relay3 Relay4 _ Relay5 Designation Pr 8 Pr 11 Pr 14 Pr 17 Pr 20 Set L e d on Pr 9 Pr 12 Pr 15 Pr 18 Pr 21 Reset l e d off Pr 10 Pr 13 Pr 16 Pr 19 Pr 22 The application relay function options are shown on the following tables D 0 or 0 00 for all Pr S Relay 1 Designation Pr 1 1 Pr 1 2 Level Distance 0 Off amis Level Control d BASIC APPLICATION Pr 1 3 Differential Off Level Alarm on e Either Transducer Differential Alarm e Differential Control d Downstream Level Alarm e RELAY FUNCTION Pr 1 4 Open Channel Flow Off Level Alarm e Level Control d
3. Echo indication to telemetry system 4 20mA signal proportional to differential Prl 3 To define differential level measurement Pr2 4 As distances are small programme in cms Pr3 120 The distance from bottom of channel to transducers in cms Pr4 30 The maximum differential span in cms Pr5 50 Blanking zone in cms Pr 6 100 The maximum rate of change of level in cms Pr 8 3 Relay 1 designated for differential control Pr 9 15 Relay 1 energises at differential 15cm to start rake Pr 10 5 Relay 1 de energises at differential 5cm to stop rake Pr ll 5 Relay 2 to alarm on an upstream level Pr 12 60 Relay 2 de energises at 60cm high alarm Pr 13 55 Relay 2 energises at 55cm to clear high alarm Pr 17 7 Relay 4 assigned to indicate loss of echo to the telemetry system Pr 23 2 Switch rake off on failsafe Pr 24 3 Holdalarm level indication on failsafe Pr 28 3 Analogue output holds on failsafe Pr 29 120 Failsafe time is left at default of 120 seconds Pr 30 1 4 20mA output fixed to span Pr 4 Pr 97 This counts the number of times the rake is turned on and how optional many hours it has been energised Ref PANEL MANUAL LMPIM 2 38 Example 5 SECTION 5 Open Channel Flowmeter__ Pr 1 4 Transducer position 50cm 3 4 times max head Pr 5 90 120cm A _ _ _ The application Rectangular flume with a maximum flow of 39 litres per second at h
4. click repeatedly Press CE to end Simulation The value displayed will depend on the value set in Pr 01 Press ENT to simulate the operation of the instrument as set up between Blanking and Empty distance The display will depend on mode set in Pr 01 Mode 1 level LEVEL 2 distance measurement DISTANCE 3 differential NO SIMULATION AVAILABLE 4 OCM LEVEL It will set all LEDs relays and the current output as programmed Therefore care must be taken if the instrument is wired into other instruments or controls The displayed value on which all relays are operated is that which is set by the operator Ref PANEL MANUAL LMPIM 2 32 SECTION 4 The initial speed of the simulation is that set into Rate of Change Pr 6 this can be increased by a factor of 2 by pressing the key and the key can be pressed 6 times x64 To reduce the speed press the key the speed cannot be reduced below that defined by Rate of Change Pr 6 The direction of the simulation can be changed by using the A and W keys which one has to be pressed depends on the set up The simulation can be stopped and re started using the TEST key Number Store Pr 95 Serial Number Press CE to end Viewable only This parameter displays the serial number of the unit Pr 96 Security Code Store A new security code can be entered at this parameter but after entry it is scrambled Refer to Hycontrol if you forget your
5. rate of level change 1 5m min Pr8 2 Relay 1 control on level normally de energised Pr 9 3 75 Relay 1 energises at 3 75m to turn pump 1 on Pr 10 0 5 Relay 1 de energises at 0 5m to turn pump off Pr ll 2 Relay 2 to control on level normally de energised Pr 12 4 0 Relay 2 energises at 4 00m to turn pump 2 on Pr 13 0 75 Relay 2 de energises at 0 75m to turn pump 2 off Pr 17 7 Relay 4 assigned to indicate loss of echo to the telemetry system Pr 23 2 Switch pump 1 off on failsafe Pr24 2 Switch pump 2 off on failsafe Pr 28 1 Analogue output to 4mA on failsafe Pr 29 30 Failsafe delay 30 seconds Pr 30 1 Analogue output to be 4 20mA fixed to Pr 4 Prod 2 Alternate pump duty Pr 78 Simulate the programme Ref PANEL MANUAL LMPIM 2 37 SECTION 5 Example 4 Differential Mode Pr 1 3 In the differential mode the transceiver drives two transducers to measure the difference in levels by subtracting the downstream level from the upstream level Please see connection diagram Figure 7 for transducer wiring sl 50cm Pr 5 F ph 120cm Pr 3 Pa SE 30cm 5cm Pr 10 15cm Pr 9 Pr 13 PLA A stop rake 4 start rake The upstream transducer should be chosen to give a positive differential value The application Start rake when differential reaches 15cm Stop rake when differential falls to 5cm Maximum differential 30cm Alarm if level on upstream side exceeds 60cm Loss of
6. 3 9 Transducer to zero level 9 metres Pr 4 8 5 The span over which measurement is required Pr 5 0 5 Blanking zone into which level should not rise Pr 6 10 _ The rate of change of level will not exceed 10 metres per minute Pr 8 1 Relay 1 to alarm on volume normally energised Pr 9 90 Relay 1 de energises at 90m High alarm on Pr 10 85 Relay 1 energises at 85m to clear high alarm Pr ll 1 Relay 2 to alarm on volume normally energised Pr 12 10 Relay 2 de energises at 10m3 Low alarm on Pr 13 15 Relay 2 energises at 15m to clear low alarm Pr 30 3 Analogue output to be 0 20mA fixed to span Pr 40 3 Define vessel as conical bottomed Pr 41 2 0 Define the depth of cone as 2 0m Pr 43 1 2 Define total capacity 120mY Pr 78 Simulate the programme Ref PANEL MANUAL LMPIM 2 36 SECTION 5 Example 3 Pump Control Pr 1 1 o B 0 5m Pr 5 t p 7777 ECON Start 3 75 Pr 9 4 Stop 2 y 0 75 Pr 13 Stop 0 5 Peto y The application 2 pump control pump down in a wet well duty assist operation Alternate pump duty to reduce wear 4 20mA to remote indicator Loss of Echo indication to telemetry Display actual level in metres Prl 1 Defines level measurement Pr2 2 Programme in metres display in metres Pr3 54 Transducer to zero level 5 4m Pr4 45 The span over which measurement is required Pr5 05 Blanking into which the liquid will not rise Pr 6 15 Max
7. Flow alarm e Off Upstream Level Alarm e Off Temperature Alarm e Loss of Echo e Temperature Alarm e Loss of Echo e Temperature Alarm e Loss of Echo e Run Programme e Run Programme e Run Programme e e Normally energised De energise to alarm d Normally de energised Energise to start motor For Level Differential ENTER values in display unit as selected at Pr 2 For Flow ENTER values in unit selected at Pr 46 For Temperature ENTER values in deg C valid only if probe fitted For Loss of Echo or Run Prog no set or reset entries are required Identical to Pr 8 Relay 2 Designation Pr 12 Relay 2 Set Identical to Pr 9 Pr 13 Identical to Pr 10 Relay 2 Reset Pr 14 Identical to Pr 8 Relay 3 Designation Pr 15 Relay 3 Set Identical to Pr 9 Pr 16 Identical to Pr 10 Relay 3 Reset Pr 17 Identical to Pr 8 Relay 4 Designation Pr 18 Relay 4 Set Identical to Pr 9 Identical to Pr 10 Pr 19 Relay 4 Reset Ref PANEL MANUAL LMPIM 2 21 SECTION 4 BASIC APPLICATION RELAY FUNCTION Pr 1 1 Pr 1 2 Designation Level Distance Differential Open Channel Flow N A Level Alarm Off Off Off y y Level Control N A Level Control N A Flow alarm N A Off N A Totaliser Drive Temperature Alarm e N A Temperature Alarm e d 7 Loss of Echo e N A Loss of Echo e Run Programme e N A Run Programme e e Normally energised d Normall
8. Pr 73 Pr 74 Failsafe R1 Test Parameters Failsafe R2 Pr 75 Failsafe R3 Pr 76 Failsafe R4 Pr 77 Failsafe R5 Pr 78 Failsafe Analogue Flow BS3680 Failsafe Time Delay Pr 80 Pr 81 Analogue Output Pr 82 Analogue Value Options Pr 83 Analogue Datum Pr 84 Analogue Span Pr 85 Analogue Test Pr 86 Pr 87 Probe Enable Pr 88 Temp Compensation Pr 89 Probe Test Pr 90 Number Store Vessel Shape Pr 95 Dimension H Pr 96 Dimension L Reset Display Conversion Pr 97 Volume Linearisation Pr 98 Pr 99 Ref PANEL MANUAL LMPIM 2 18 SECTION 3 Flow Exponent Max Flow Rate Time Base for Flow Rate Totalise Display Conversion Control of Ext Totaliser Penstock Control Pump Sequence Duty Standby Pump Exerciser Pump Tolerance Pump Maintenance Run on Interval Run on Time Echo Selection Algorithm Check Search Echo Velocity Correction Value Parameter Display Software Revision Number Reset Counter Digital Output Set HardwareTest Transmitter Test Simulation Calculation method Flume throat width Flume channel width Flume throat length Flume hump height Weir crest width Weir channel width Weir crest height V notch angle V notch channel width V notch vertex height Serial Number Store Security Code Store Relay Hours Starts Totaliser Reset OCM Totaliser Reset Full System Reset All other parameters are unused and should not be changed SECTION 4 PARAMETER DEFINITIONS The parameters define all the options that are av
9. keypad with security code High Low Hold Fully adjustable Fully adjustable RZV15 RZTIS RZV15T RXV15 RXT15 RXV 15T Uncompensated Compensated Uncompensated 41 5 41 5 41 5 10 degrees 10 degrees 10 degrees Xenoy Xenoy Xenoy Urethane Urethane Teflon 40 to 90 deg C 40 to 90 deg C 20 to 90 deg C IP68 IP68 IP68 2 2 3 CE approved EMC tested in accordance with EN50081 amp EN50082 Parts 1 amp 2 Low voltage directive EN61010 Refer to Page 53 for ATEX installations 51 APPENDIX 3 Installation Instructions for ATEX Transducer in Hazardous Area For transceiver installation and programming refer to the appropriate transceiver manual PPSC MINIFLEX MICROFLEX PWINFLEX LIQUIFLEX MULTIFLEX REFLEX CSO1 Safe area O Hazardous area Transceiver Refer to the transceiver manual for maximum Transducer allowable separation from the transducer Installation must be in accordance with the applicable codes of practice and harmonised stan dards for EEx m encapsulated equipment The transducer must be driven only by one of the above listed transceivers The transceiver must always be installed in a safe area Ref PANEL MANUAL LMPIM 2 52 Specification Transducer Type Temperature com pensated Frequency KHz Body material Face material Temperature deg C Protection Weight Kg RXV15 No 41 5 Xenoy Urethane 20 to 55 IP68 2 0 RXT15 Yes 41 5 Xenoy Urethane
10. l Connect power and transducer cables as defined on the instrument ac Power Supply Transducer dc Power Supply 1 2 3 Terminal Nos 4 5 6 10 9 E N L Black Blue Screen ve ve The instrument is supplied factory set on initial power up to work in distance measurement up to 10 metres from the transducer on Liquiflex and 15 metres on Multiflex Hold the transducer approximately 1 5 metres from a flat surface and switch on After a short period the display will show the distance e g 1 50 between the transducer and the surface If the transducer is now moved slowly towards the surface the reading should decrease This shows that the unit is correctly wired and is operating as expected in response to the reduction in distance If the reading increases as the transducer is moved towards the surface it indicates that the unit has been previously programmed to read level not distance Principle of Programming The instrument has two modes a b RUN Normal operating PROG Programming In the RUN mode the instrument is monitoring the target displaying values and setting outputs as programmed by the operator In the PROG mode the operator uses the keypad in conjunction with the display to adjust the settings and to test that the unit is programmed correctly Ref PANEL MANUAL LMPIM 2 SECTION 2 Keypad Definitions The keypad consists of 20 keys which are used to programme the operation of the transcei
11. on the application mode selected at Pr 1 Limits are defined by Pr 4 Pr 1 Entry Application Output Proportional To 1 Level a Level b Volume if Pr 40 is used a Target distance Dae B see volume 40 i se Differential level The unit can 3 Differential DLD differentiate between positive and negative differentials See Pr 31 a If Pr 31 1 output proportional to head b If Pr 31 2 output proportional to flow Open Channel Meter OCM NOTE Refer to Pr 34 for output test Pr 31 Analogue Value Options D 1 In differential mode Pr 1 3 Enter 1 difference of two levels Pr 4 represents maximum differential in levels 2 upstream level Pr 4 represents the difference between upstream empty distance Pr 3 and maximum upstream level 3 downstream level Pr 4 represents the difference between downstream empty distance Pr 3 and maximum downstream level In OCM mode Pr 1 4 Enter 1 for measured head depth of liquid 2 for calculated flow Ref PANEL MANUAL LMPIM 2 23 SECTION 4 Pr 32 Analogue Datum D 0 00 If an analogue output is required with a zero different from the measurement zero Pr 3 then an offset defined as a percentage of the measurement span flow volume etc can be entered here Pr 33 Analogue Span D 100 If an analogue output is required with a span different to that defined for the measurement Pr 4 then an alternative value defined as a percentage of the measuremen
12. parameters trES Resetting totaliser LOSt Loss of echo tESt System performing a requested test gAIN Gain value being displayed HEAd Head FLO Flow HItO Totaliser high 4 digits 9999 LO tO Totaliser low 4 digits 9999 deG C Temperature C dISt Distance An OP Analogue output Ref PANEL MANUAL LMPIM 2 14 SECTION 3 Security Code The programme includes security code protection Any operator can display the value of a parameter but any attempt to enter a new value or perform a test will result in the security code being requested The security code is requested by the prompt of COdE if the code is not entered correctly this prompt is re displayed Once the code has been input correctly it will not be required again whilst the system remains in the PROG mode The factory set value is 9753 A new customer s security code comprising 4 numerical digits can be entered via Pr 96 providing the operator is in programme mode The range of acceptable values is 1000 to 9999 If an invalid code is entered the instrument will default to a code number 9753 The code number is scrambled immediately on entry If you forget your security code ring your supplier for advice quoting the number stored in Pr 96 Ref PANEL MANUAL LMPIM 2 15 SECTION 3 Application Programming The programming is controlled by the parameters detailed later in this Section Programming is easy to follow because the parameters avai
13. security code and quote the number displayed here Resets Pr 97 Relay Hours Starts Totaliser Reset D The totalisers are cleared by entering Pr 97 and DSP Press CE Press Enter Enter 9753 Press Enter Pr 98 to show to clear the screen to request COdE to show t rES followed by Clear the OCM Totaliser i e HLTO and LO TO The totalisers are cleared by entering Pr 98 and DSP Press CE Press Enter Enter 9753 Press Enter Ref PANEL MANUAL LMPIM 2 to show to clear the screen to request COdE to show t rES followed by 33 SECTION 4 Pr 99 Return to Factory Default Press MODE q 199 DSP CE ENT 9753 DSP to display PROG immediately to display Pr 01 or previous Pr number to display Pr 99 to display to clear the display to display COdE requesting the security code see note and ENT to display P rES followed by t rES and then to display Pr 99 and now the new programme can be entered NOTE Enter your own security code number if you have changed it from factory setting of 9753 Ref PANEL MANUAL LMPIM 2 34 SECTION 5 APPLICATION EXAMPLES Example 1 Level Measurement Mode Pr 1 1 Applications for this mode are Level Measurement Contents Measurement and Pump Control i 0 5m Pr 5 O AO tar Set Alarm i E o Alarm T 3 t Pr 4 2 a 2 8m Pr 9 ji 10 The application To measure and display the leve
14. 0 5 Pr 10 Y Having changed the value in Pr 01 to 1 level Press A Display Pr 02 2 units in metres A Change Pr 03 1 50 empty distance A Change Pr 04 1 00 operational span A Change Pr 05 0 50 blanking distance A Display Pr 06 1 00 rate of change of level in metres A Change Pr 08 1 relay 1 designated normally energised A Change Pr 09 0 70 relay 1 set A Change Pr 10 0 50 relay 1 re set MODE to return to normal running For a full description of parameter options refer to Section 4 Note The display does not show the decimal point until the first decimal figure is keyed in Ref PANEL MANUAL LMPIM 2 12 SECTION 2 Programme Checking To check that the previous programme functions properly hold the transducer approximately 1 5m above a surface and press MODE to return to the run condition The display will read approximately zero If it displays LOSt it is because the transducer is more than the 1 5 metre distance to furthest point from your target Go closer and wait for LOSt to change to 0 00 and then a level By slowly moving the transducer towards the surface the display will increase simulating a rising level When the display exceeds 0 7 the relay will switch indicated by the light on relay 1 and if the transducer is then raised the display will decrease and the relay will reset below 0 5 Programme Correction or Resetting to Factory Defaults If at any time you feel that a
15. 20 to 55 IP68 2 0 Alternative facing materials Polypropylene or PTFE Alternative flanged construction 3 or 4 DN80 or DN100 Typical marking Manufacturer Group category CE certification Type Type of protection Tamb Degree of protection Maximum input S No Mfg Year Hycontrol Limited C 0492 E 120D ISSeP 03ATEX021X XXXXXXX EEx m II T6 20 to 55 deg C IP68 6W XXXXXXXX XXXX Ref PANEL MANUAL LMPIM 2 53 RZV15 No 41 5 Xenoy Urethane 20 to 55 IP68 1 5 APPENDIX 3 RZTIS Yes 41 5 Xenoy Urethane 20 to 55 IP68 1 5 APPENDIX 4 LIQUIFLEX PLC BS3680 Flow Devices To ensure compliance with BS3680 the following additional parameters are available Refer to Page 26 for full programming and standard parameter details Pr 45 Enter 15 Rectangular Flume 16 Rectangular Thin Plate Weirs 17 V notch Thin Plate Weirs Pr 80 Enter 0 Absolute Enter also max head Pr 04 span The unit will then calculate max flow and store it Pr 46 when you have Completed programming and entered the unit into RUN mode The calculated flow is always in litres sec Pr 47 defaults to 1 other values are ignored If the flow exceeds 9999 Pr 46 will display FULL you must then use the ratiometric method as detailed below adjusting flow units as necessary e g 16000 l s could become 16 m3 s or 960 m3 min 1 Ratiometric Enter max head Pr 04 Enter max flow P
16. 300mm and Pr 5 set at 450mm minimum The inside of the pipe and joint with vessel top must be clean and free of any obstructions seams or welds Ref PANEL MANUAL LMPIM 2 SECTION 1 Transducer Cable Extensions Transducer cables may be extended using junction boxes as shown in Figure 6 Figure 6 Standard Transducer Temperature Compensation Transducer Transducer Transceiver Transducer Transceiver Junction Junction Beldon 9207 Black DO Screen Term 4 Blue Silver core term 5 S creen RG62AU Copper core term 8 Biies D D Core Term 5 Screen term 4 Figure 7 Transducer Wiring for Differential Mode Up amp Downstream Screens Upstream Blue Up amp Downstream Blacks Downstream Blue Without extension cables With extension cable Upstream Transducer Transceiver Junction Black 0 0 Screen Term 4 Screen RG62AU Blue D0 Core Term 25 Extend transducer cable if necessary with RG62AU as shown Downstream Transducer Transceiver Junction Black D D Screen Term 4 Link terminals 5 and 24 together Screen RG62AU Blue 37 D D Core Term 23 Ref PANEL MANUAL LMPIM 2 SECTION 1 Temperature Sensor If a separate temperature sensor is to be used it must be mounted where it will monitor temperature changes of the air between the transducer and the liquid This is usually adjacent to the transducer but should not be in direct sunlight and should be protected from win
17. 4 Blue to terminal 5 Screen to terminal 6 Temperature compensated transducer RZT15 and RXT15 are connected Screen to terminal 4 Must enable Pr 37 Blue to terminal 5 Black to terminal 8 Isolated Analogue is connected Screen to terminal 26 Positive ve to terminal 27 Negative ve to terminal 28 Separate Temperature Compensation when compensation is provided by a separate temperature sensor the sensor should be connected with a shielded twisted pair and connected Screen to terminal 6 Must enable Pr 37 Core to terminal 7 Core to terminal 8 The polarity of the cores is unimportant but it is important that the screen is connected only at the instrument end and not at the temperature sensor end Ref PANEL MANUAL LMPIM 2 SECTION 1 c Transducer Mounting The transducer can be supplied as standard or mounted in a Teflon faced flange for applications requiring chemical compatibility Figure 3 shows the dimensions Figure 3 HEN aoe 2 h Y Ms 7 N j 10m cable M20 x15 i gt 6 9 dia rents 1 i i i i i i i i i i i i i i JO ee 2 i i 7 gt i i S i at 4 lt l S AE y 38 i a 1 50 1 H i ps gt i eel i ww DIA 1 ie i i gt 3 i i S 5 No amp size of bolts H x a i to suit flange selected i E x lo A i i eS i A i i H i i H 2 i t amp h i E i i i oi i i A See ea r ica 1 i H A l i T r i i a ES Bolt hole PCD 10 suit 1L i i
18. 8 39 40 41 to 45 46 to 50 51 52 to 53 54 55 56 Drawings Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 Figs 6 amp 7 Fig 8 PANEL MOUNT PROGRAMMABLE LEVEL CONTROLLER USER MANUAL INTRODUCTION Liquiflex and Multiflex are programmable level measurement instruments Liquiflex is suitable only for liquid level measurements and flow control over ranges up to 10 metres Multiflex is a multi purpose instrument suitable for both solids and liquid applications up to 15 metres range Both instruments consist of two elements a panel mounted transceiver which has a display and an integral keypad for programming and a transducer which must be mounted directly above the surface to be monitored Ultrasonic pulses are transmitted by the transducer to the surface to be monitored and are reflected back to the transducer The time period between transmission and reception of the sound pulses is directly proportional to the distance between the transducer and the surface Since the speed of sound through air is affected by changes in temperature a separate or integrated temperature sensor may be fitted to improve accuracy The panel mount instruments are capable of the following functions a Level Measurement height above datum b Distance Measurement distance from a datum c Volume Measurement d Differential Level Measurement e Open Channel Flow Measurement O C M f Pump Control Ref PANEL MANUAL LMPIM 2 SECTION 1 INST
19. ALLATION a Transceiver Fig 1 For ATEX hazardous areas refer to Appendix 3 Cut a rectangular hole 90mm x 138mm high in the panel Insert the instrument from the front of the panel and secure in place using the fixing clamps against the back of the panel 150 BEHIND PANEL 96 8 90 91 PANEL CUTOUT 20 PANEL WIDTH HYCONTROL O 40 50 LIQUIFLEX LO TO HEAD FLOW 2 D N in O 6 138 139 PANEL CUTOUT R ao af im z Y El HYCONTROL LTD TEL NO 0 28 ANALOGUE OUTPUT Ref PANEL MANUAL LMPIM 2 SECTION 1 b Electrical and Transducer Connections The panel mount instrument has two part screw terminals It can be powered from either an AC or DC supply AC power supply connected Earth to terminal 1 Neutral to terminal 2 Live to terminal 3 The instrument will automatically accept either 110V or 230V AC 10 50Hz or 60Hz 12VA A time lag fuse T160mA is fitted DC power supply connected Positive ve to terminal 10 Negative ve to terminal 9 The instrument will accept 24V DC 25 10 9W A time lag fuse T315mA is fitted 5 SPDT Relays rated 8A 250V AC 30V DC resistive with gold contacts for lower power switching are connected to terminals 11 to 25 for activating external alarms contactors pumps etc Transducers The Liquiflex uses RZV15 series transducer The Multiflex uses RXV 15 series transducer Transducer RZV15 and RXV15 are connected Black to terminal
20. Elect Iss 01 LIQUIFLEX MULTIFLEX PROGRAMMABLE LEVEL CONTROLLER INSTRUCTION MANUAL HYCONTROL LIMITED Larchwood House Orchard Street Redditch Worcestershire B98 7DP Tel 01527 406800 Fax 01527 406810 Web www hycontrol com Email sales hycontrol com Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 APPENDIX 1 APPENDIX 2 APPENDIX 3 APPENDIX 4 APPENDIX 5 APPENDIX 6 LIQUIFLEX AND MULTIFLEX PANEL MOUNT INSTRUMENT USER MANUAL Introduction Installation Transceiver Mounting Transceiver Wiring Transducer Mounting Transducer Alternative Mounting Transducer Mounting Faults Transducer Stand Pipe Transducer Cable Extensions Temperature Sensor Easy Start for Liquiflex Quick Start Guide Principle of Programming Keypad Definitions To View Parameters Programming Example Programme Checking amp Correction Programming Principle of Programming Keypad Definitions Display Descriptions Security Code Application Programming Entering a New Programme Parameter Index Parameter Definitions Examples 1 Level Measurement Mode Contents Volume Conversion Pump Control Differential Open Channel Flow Open Channel Flow with Penstock Du Hu wn Commissioning Fault Finding LINEARISATION OF SPECIAL VESSELS OR FLUMES SPECIFICATION ATEX INSTALLATIONS BS3680 FLOW PARAMETER SETTINGS PARSHALL FLUMES E E O 0 N CANDDNSPNNNY 18 19 to 34 35 35 36 37 3
21. ROG being displayed It is now advisable to reset to factory parameters refer to Programming Section 3 Analogue Output is Unstable 1 Connect test meter in series with your external wiring Can fault be seen on test meter If YES then use Pr 34 to enter a stable value into the current loop Suitable values range from 4 to 20 If output is still unstable disconnect external wiring and connect meter across terminals 27 and 28 and repeat Pr 34 test If the output is now stable check wiring and meters Analogue has no Output Check programme value at Pr 30 Value 1 6 Ze Insert test meter in series with the output Under Pr 34 enter a fixed output If still no output connect test meter directly across terminals 27 and 28 repeat test under Pr 34 If no value is read at terminals 27 to 28 then contact Hycontrol Analogue Output is less than 20 at maximum display reading 1 The load attached to the output may be too high To check this disconnect all external wiring and see if it now reads 20 The output is capable of driving 20mA into 750 Ohms Analogue Output does not correspond to application 1 Checked that the correct options Pr 30 to Pr 33 have been selected Ze Check that the correct span Pr 4 has been input this is the value over which the analogue will be spanned unless a separate entry has been made at Pr 32 or Pr 33 Reading on display and outputs stay high di This is usually caused by return echoes fr
22. _ iR fof __ 54 PumpTolerance 1 _ 12 Relay 288 o _ 55 PumpMaintenance o _ 113 Relay 2Resar 0 _ 6 Run on Interval 0 _ 14 Jretay3 0 gt Remo fo 15 Reys o cho Detection O O O T6 Relay 3 Resar o 68 Echo Selection 20 _ i7 Reays fof CheckSearch 1 18 Relay 358 o _ 70 Echo Velocity BI 119 Relay 4Resar 0 Miscellaneous __ feys f o gt 7 Correction Vale 0 far Reys o TP Parameter Display 0 22 Relay 5Resar j o 3 Software Rev No SWARE Failsafe o dT Yi Reset Counter po id SC 23 FaikafeRT s O Test Parameters __ 24 Failsafe R2 ree 75 Digital Ompas 0 _ Simulation 81 82 83 84 85 87 88 Flow BS3680 Calculation method Flume throat width 32 Analogue Datum 0 j ret Wi Analogue Test Weir channel width Weir crest height V notch angle Temperature E 89 Venorch channel width 39 Probe Test_ 000 90 Vinoth vertex height Volume Conversion _ NumberStore f f 41 Dimension H 0 ___ 96 Security Code Store 42 Dimension 0 Ree o 43 Display Conversi n 1 o Roy msan a 24 Volume Linearisation oo 98OCMTovaliser Reset Pes PA TOTO TP L ene 7 Al E 4 E A E 30 Analogue Omp 1 fe TS 2 Flume hump height TT TS IAS IE E Sapa is A To scroll through parameters 1 74 press MODE followed by 1 followed by TEST To stop the
23. ailable to the operator of the instrument It may be easier to read these in conjunction with the application examples on pages 35 to 40 NOTE D factory default entry for that parameter Basic Set up Pr 1 Basic Application D 2 Enter 1 Level Measurement 2 Distance Measurement 3 Differential Level Measurement DLD 4 Open Channel Flow Metering OCM Pr 2 Calibration Display Units D 2 Enter 1 Feet 2 Metres To display in percent of span 3 Inches set Pr 40 to 1 4 Centimetres The system will be set to work in the specified units but the display can be made to display a percentage a converted value or a volume Pr 40 NOTE Any subsequent change of units in Pr 2 i e Pr 2 1 4 will reset parameters Pr 3 to Pr 6 to new units and all other parameters will default to factory resets Pr 3 Empty Distance Liquiflex D 10 00 Multiflex D 15 00 The distance from the face of transducer to the furthest point away usually the bottom of the container or channel Enter the distance in the units selected in Pr 2 NOTE We recommend setting the unit to factory defaults and let 1t measure the empty distance Enable Pr 37 1f using temperature compensation Resolution is a function of this parameter Pr 4 Operational Span Liquiflex D 10 00 Multiflex D 15 00 The distance between the furthest and nearest points over which measurement is required Enter the distance in the units selected in Pr 2 For diffe
24. ally by entering the required parameter number Before entering the RUN mode the programme can be checked by pressing Pr 78 then DSP then ENT The instrument will now simulate the operating programme except in differential mode providing display analogue output and relay functions All outputs will work under simulation so ensure that external connections will not cause damage Press CE to leave simulation Press TEST to freeze and unfreeze simulation When the programme is complete and does not require further modification press MODE to return to the RUN condition Ref PANEL MANUAL LMPIM 2 17 Basic Set up Pr 1 Pr 2 Pr 3 Pr 4 Pr 5 Pr 6 Pr 7 Relays Pr 8 Pr 9 Pr 10 Pr 11 Pr 12 Pr 13 Pr 14 Pr 15 Pr 16 Pr 17 Pr 18 Pr 19 Pr 20 Pr 21 Pr 22 Failsafe Pr 23 Pr 24 Pr 25 Pr 26 Pr 27 Pr 28 Pr 29 Analogue Pr 30 Pr 31 Pr 32 Pr 33 Pr 34 Temperature Pr 37 Pr 38 Pr 39 Volume Conversion Pr 40 Pr 41 Pr 42 Pr 43 Pr 44 NOTE PARAMETER INDEX Open Channel Flow Application Pr 45 Units Pr 46 Empty Distance Pr 47 Operational Span Pr 48 Blanking Distance Pr 49 Rate of change Pr 50 Decimal Display Pump Controls Relay 1 Pr 51 Relay Set Pr 52 Relay 1 Reset Pr 53 Relay 2 Pr 54 Relay 2 Set Pr 55 Relay 2 Reset Pr 56 Relay 3 Pr 57 Relay 3 Set Echo Detection Relay 3 Reset Pr 68 Relay 4 Pr 69 Relay 4 Set Pr 70 Relay 4 Reset Miscellaneous Relay 5 Pr 71 Relay 5 Set Pr 72 Relay 5 Reset
25. cept for the power lead If the fuse does not blow on power up there is a fault in the external wiring 2 Check that the power supply is within specified limits refer to Page3 3 Check the enclosure for metal debris c The system powers up but displays 8888 1 Contact Hycontrol for advice d The display flashes LOST 1 Check the transducer wiring and connections to the instrument Note different connections are used if a temperature compensated transducer is connected See Page 3 Ref PANEL MANUAL LMPIM 2 41 SECTION 6 2 Check whether the neon light adjacent to terminal 4 is flashing If it is proceed to number 3 if it is not then a Disconnect the transducer If the neon now lights then there is a short circuit in the cabling b If the neon does not light the transmitter protection fuse may have blown Contact Hycontrol e If the unit still shows LOSt check that you can hear the transducer clicking when close to the ear d Tf the transducer cable has been extended disconnect and remove the transducer and connect it directly to the transceiver If the unit now operates recheck the extension cable connections and routing avoiding power cables Re install the transducer checking that its aim is perpendicular to the target surface e If the transducer does not click proceed to 5 3 Is there a target within the empty distance specified in Pr 3 This is particularly important if temperature
26. ctify increase the value of Pr 6 to at least the rate of change of level The display is inaccurate 1 2 The empty distance Pr 3 of the vessel may be incorrectly set The dimensions of the vessel or flume may be incorrect as may the values of maximum flow volume or mass conversion The system may require temperature compensation The application may include vapours that significantly change the speed of sound Provided these are constant over the range the speed of sound can be adjusted through Pr 70 Ref PANEL MANUAL LMPIM 2 44 SECTION 6 n The temperature is inaccurate 1 The position of the transducer temperature probe is important to prevent heating by sunlight and convection currents Also the sensor should be in a free air vented position if possible to prevent hot spots Ze Check that temperature compensation is enabled at Pr 37 3 Check the resistance of the temperature probe when disconnected against the value in Pr 39 when connected If using a temperature compensated transducer check this resistance value across the shield and black core when disconnected NOTE The sensor probe compensates for temperature variance and is not expected to give a accurate measure of actual temperature 0 The boards hums loudly Usually vibration from transformer 1 Contact Hycontrol p Relays not switching 1 Check the programmed relay designations and settings at Pr 8 22 Functions can be test
27. d chill e e 75 dia _ gt N g 7 v e fe 804 cute N j i i i i i i 1 I i ae re ee ae i evni TE nAn l K f A i i i i E A t blue i i mima roe ma MN E FC i i yoo teapots Cable entry i i 164 Fi are a l i 4 pda ce E M20x 1 5 a i mi 1 tarn i 1 25 i Leg Y i T H i i EEA 33 a f hex i Sieen hi f EN 1110 Electrical connections H i i i Process connection i Note that the connections are not polarised i i i iji M20x1 5 pa i i i ij i i HOUSING POLYCARBONATE IP65 H Possan a te iaaa aa i PROBE 316SS i fi i i gt jaJ0 dia i i i TEMPERATURE SENSOR RTS 2 i i i i de i OC i 1 L K H l SCREW i SOdia 25 i po POLARITY i Me eget ERE P i 4 UNIMPORTANT H i i i i 4 i i A i l i Si i i 2 lo 1 i 1 i l i A i eee e i i ON i i EXTERNAL i N INTERNAL EARTH EARTH i A I i HOUSING CAST IRON BLACK EPOXY PAINT i CLASSIFICATION EEx e II T6 IP 65 i X i o EN PROBE 316ST STEEL e N a a Ref PANEL MANUAL LMPIM 2 SECTION 2 EASY START FOR PANEL MOUNT INSTRUMENTS The system requires programming by the operator to obtain the required measurements and control To create a basic working system only parameters 1 to 6 need be programmed To become familiar with the use of the system it is suggested that the following QUICK START guide is used before the instrument is installed Quick Start Guide
28. ead 30cm Loss of Echo indication to telemetry system 4 20mA signal proportional to flow Totalise flow and provide pulsed output to external totaliser every 1000 litres Display flow reading Prl 4 To define open channel flow metering Pr2 4 As distances are small work in cms Pr3 120 Distance of transducer from bottom of channel Pr 4 30 _ Level at which maximum flow rate value is defined Pr5 50 Blanking zone into which level will not rise It is suggested that this is above the top of the channel to allow the system to continue reading up to that level Pr6 50 _ Rate of change of level 50cm min Pr 17 7 Relay 4 assigned to indicate loss of echo to the telemetry unit Pr 20 5 Relay 5 to operate as external totaliser switch Pr 28 3 Analogue output holds on failsafe as factory set Pr 29 120 Failsafe time is left at default of 120 seconds Pr 30 1 4 20mA output fixed to span Pr 4 Preah 2 Analogue output represents flow rate Pr 37 2 Probe enable if Temperature Compensation is used Pr 45 2 To define that a rectangular flume is being used Pr 46 39 Defines the maximum flow is 39 litres Pr47 1 Flow in Pr 46 is in litres per second Pr48 3 To avoid totaliser overflow totalise in cubic metres rather than litres Pr49 1 To set external totaliser to same as internal totaliser Pr 98 Clear and initiate the totalisers NOTE In normal RUN mode display will always show Flow Instan
29. ed under simulation using Pr 78 Ze Test the actual relays using Pr 75 or Pr 76 3 Check contact continuity at the terminals 11 25 WARNING It is recommended that all external controls alarms etc are disconnected before performing the above tests Ref PANEL MANUAL LMPIM 2 45 APPENDIX 1 LINEARISATION VESSELS OR FLUMES This feature allows volume conversion to be applied on irregular shaped vessels and flow measurements to be made on open channels providing that level volume flow relationships are known The system allows the entry of a volume or flow profile at up to 16 points of level to be entered into memory that is then used to produce the required flow or volume values when in RUN mode The required profile is stored in parameter 44 Before proceeding it is useful to write down a table of the point numbers and A b values to facilitate programming FLOW When using the facility for flow it is enabled by Pr 45 4 The profile is stored as percentage of head against percentage of flow See example on page 48 VOLUME When using the facility for volume it is enabled by Pr 40 8 The profile is stored as percentage of level against percentage of the total volume See example on page 50 PROCEDURE The procedure uses a 16 point curve to map the profile but all 16 points do not have to be used Head or Level Designated A Flow or Volume Designated b The profile data is input into Pr 44 wh
30. ension L D 0 00 Enter L where indicated above in units selected at Pr 2 Pr 43 Display Conversion D 1 00 If Pr 40 entry is between 1 8 then enter full scale display 100 e g if 100 2000 litress and display required in litres then set Pr 43 to 2000 100 20 To display in any unit enter any value from 0 001 to 9999 NOTE Display cannot be more than 4 digits If it is necessary to measure 20 000 litres then display in cubic metres by dividing 20 by 100 0 2 Pr 44 Linearisation D This function allows non standard flumes and vessels to be characterised For full details please refer to Appendix 1 pages 46 to 50 Ref PANEL MANUAL LMPIM 2 25 SECTION 4 Open Channel Flow Metering Pr 45 e g Pr 46 Pr 47 Pr 48 Flow exponent D 1 Enter the required value for the open channel flow device being used Flow Device Enter Unity 1 Rect flume 3 2 2 Rect weir 3 2 2 V notch weir 5 2 3 Special 4 Refer to Pr 44 BS3680 Refer to Appendix 4 Parshall Flumes 5 14 Refer to Appendix 6 Maximum Flow Rate D 0 00 Enter the maximum flow rate in units per second per minute per hour or per day corresponding to maximum head set at Pr 4 and then define the time base at Pr 47 Time Base of Maximum Flow Rate D 1 Enter the value corresponding to the flow rate time base Enter 1 _ units per second 2 units per minute 3 units per hour 4 units per day Totaliser Display Conversion D 0
31. ergised Relay 3 Number of times energised Relay 4 Number of times energised Relay 5 Number of times energised Displays gain Displays mA output Displays distance from the transducer face Displays temperature Ref PANEL MANUAL LMPIM 2 10 SECTION 2 To View Parameters The operational programme is contained within the parameters listed on Page 18 Each parameter instructs the unit to carry out a specific function To look at the complete list of parameters and the options available see Section 4 but as an initial guide proceed as follows Press MODE the display will show PROG there may be a delay of up to 6 seconds if the instrument is busy Press l immediately to obtain a display of Pr 01 or the previous parameter number used It is now possible to key in any parameter number via the keypad To display its value press DSP To return to the parameter number press DSP again To view a sequence of parameter numbers enter the first one that is of interest and then press A to increase the parameter number or W to decrease the parameter number Similarly if a parameter value is displayed then pressing A or W key will momentarily flash the next parameter number and then display that parameter value If a key is not pressed for a period of 30 seconds the unit will automatically return to the run mode Press MODE to return to the RUN mode To change a Parameter Programming Press MODE to d
32. i i flange selected i i i i i l o 1 i i is AE Diato witfangs ssJected i i i i Standard Flanged An isolation kit is provided with each transducer to minimise any ringing transmitted through the mounting structure The transducer must be mounted perpendicular to the monitored surface and ideally at least 0 5 metres above it The transducer has a 10 inclusive conical beam angle at 3dB and must be mounted with a clear unobstructed sight of the surface to be measured over the complete measurement range The transducer is provided with integral cable which can be extended up to 300 metres using a suitable junction box and RG62AU cable refer to page 7 The temperature compensated transducer requires an additional single core screen extension or twin ax cable The extended cable should then be terminated directly into the instrument Transducer cables and temperature compensation cables can be run together but must be separated from power cables by at least 150mm and preferably installed in their own earthed steel conduit Ref PANEL MANUAL LMPIM 2 SECTION 1 Figure 4 Alternative mounting arrangements for transducers FLEXIBLE OR RIGID UNDER FLANGE CONDUIT BRACKET as A ISOLATION KIT a Sgt ISOLATION KIT INTEGRAL FLANGE WITH PTFE FACE SLIP ON FLANGE OPTIONAL ISOLATION KIT Do not mount transducers incorporating temperature compensation in direct sunlight Do not ove
33. ich when accessed Pr 44 DSP ENT will display Al which means the data pointer is at value 1 on A data The values can be displayed and changed as required Ref PANEL MANUAL LMPIM 2 46 APPENDIX 1 Pr 44 Keyboard Controls Toggles the display between data blocks A and b A Increases and decreases the point number when either the point number v or its value is displayed CE Clears the display when inputting a new value DSP Toggles the display between the block and point number and the value ENT Enters a new value TEST Exists Pr 44 and returns the operator to the normal programme 0 9 The number keys and decimal point are used to input new values Point numbers can be changed only by using the A and W keys Pr 44 Inputting Values When a new value is to be entered first display the old value and then input the new and press ENT the system will display the value it has stored in memory The values input have to be in a specific form l Head Level Designated A These values must be a whole number Decimal places will be ignored i e 11 will be accepted as 11 22 3 will be accepted as 223 The allowable range of values is 0 250 any unused data values must be set to 255 PARAMETER RESET LOADS 255 TO ALL DATA VALUES PA Flow Volume designated b These values are expected to contain one decimal place therefore it it is not necessary to input the decimal p
34. isplay PROG Whilst PROG is displayed press 1 and the display will show either Pr 01 or previous Pr number If not Pr 01 then press 1 to obtain display of Pr 01 Press DSP to display the value of Pr 01 Press ENT and the display will show COdE requesting that the security code is entered Press 9753 to enter the factory set security code See Page 15 to change code Press ENT and the display will blink and show either the default value of Pr 01 which is 2 or any other value previously programmed into it The unit is now ready to be programmed NOTE Whenever COdE is displayed re enter the security code The display should now be showing the value entered in Pr 01 To change the value of this entry key in the new value required and press ENT For our example press 1 and ENT and the value of Pr 01 will change to 1 which means it is in level mode 1 e measuring product height above datum Then using the A key move to the other parameters that require changing Ref PANEL MANUAL LMPIM 2 11 SECTION 2 To change the value of any other parameter either use the A key to move to higher Pr numbers or press DSP and then enter the Pr number required and press DSP again to display its value Programming Example The following example shows how to continue programming from the previous stage to achieve a simple level application including setting a high alarm Relay 1 Set Relay 1 Reset if Pr 9
35. ist operation 2 Duty standby on pumps 1 and 2 3 Duty standby on pumps 1 2 and 3 4 Duty standby on pumps 1 2 3 and 4 5 Duty standby on pumps 1 2 3 4 and 5 The turn off points for the pumps can all be the same or they can be different depending on the chosen Set and Reset values for each relay unless using alternating sequence at Pr 51 Pump Exerciser D 1 To use this facility first select alternating duty options 2 to 5 in Pr 51 depending on the number of pumps installed Enter the number of starts assigned to Pump 1 before the sequence switches to allow the other pumps to be exercised in turn Pump Tolerance D 1 In applications where a greasy topped liquid is being pumped problems may occur due to build up of grease at the levels where pumping starts It is usually necessary for this to be cleared manually To avoid this varying the turn on point for the pumps by 10 of the set point value causes the build up to occur over a larger area significantly reducing the maintenance problem Enter 1 No tolerance applied to pumps 2 Tolerance applied to all pumps NOTE The pump reset points must be outside the tolerance band of the set points and blanking Ref PANEL MANUAL LMPIM 2 28 SECTION 4 Pr 55 Pump Maintenance Dropout D 0 The removal of one pump for maintenance can necessitate a great deal of readjustment to ensure correct control Pr 55 removes this need by allowing one pump
36. l of liquid in metres Maximum level 3m Fill rate 0 1 metre min Alarm if level exceeds 2 8 metres 0 20mA signal proportional to level Prl 1 Defines level measurement Pr2 2 Programme units are metres Pr3 4 Distance from transducer to zero level Pr4 3 The span based on zero level Pr5 05 Blanking zone into which level should not rise Pr6 01 The maximum rate of change of liquid level in metres minute Pr 8 1 Relay 1 to alarm on level normally energised Pr 9 2 8 Relay 1 to de energise at 2 8 metres to indicate high alarm Pr10 2 6 Relay 1 to re energise at 2 6 metres to clear the high alarm Pr 23 3 Hold alarm indication relay 1 on failsafe Pr 28 3 Analogue output holds on failsafe Pr 30 3 0 20mA output fixed to span Pr 4 Pr 78 Simulate the programme Ref PANEL MANUAL LMPIM 2 35 Example 2 SECTION 5 Contents Measurement with Volumetric Conversion Pr 1 1 The application 0 5m_ Pr 5 po Alarm Pr 9 Reset High Alarm Pr 10 8 5m Pr 4 Reset Low Alarm Pr 13 y 4 Set Low Alarm Pr 12 To measure the level in a conical bottomed cylindrical tank Dimensions as shown Total volume of tank 120m when level is 8 5m Output display in m Analogue output to be 0 20mA proportional to volume in tank High alarm at 90m volume Low alarm at 10m volume Prl 1 Defines level measurement Pr 2 2 Programme in metres display control in volume Pr
37. lable to the programmer fall into distinct groups Pr l Pr 7 Basic set up Pr s Pr 22 Relays 1 to 5 designation and settings Pr 23 Pr 29 Failsafe operation Pr 30 Pr 34 Set the analogue output Pr 37 Pr 39 Temperature compensation Pr 40 Pr 44 Volume conversion Pr 45 Pr 50 Open Channel Flow Metering Pr 51 Pr 57 Specialised Pump Control Pr 68 Pr 70 Select echo detection and processing Pr 71 Pr 74 Miscellaneous Pr 75 Pr 78 Test Parameters Pr 80 Pr 90 BS3680 Flow parameters Liquiflex Pr 95 Pr 96 Number Stores Pr 97 Pr 99 Resets It can be seen from the above which distinct groups of parameters need to be considered for a particular application For instance in an application to measure level it may be necessary to consider only Pr 1 to Pr 29 which are relative to basic set up relays and failsafe It is good practice to carry out a programme reset on a new application before starting programming as this will return all parameters to factory defaults and any parameters which are not required for the new application will remain at default ensuring that the programme runs correctly Default values for each parameter are shown in the parameter definition Section 4 and in the Parameter Setting table Page 55 Programming The following is the programming sequence to set up a unit for operation If you have wt done this before refer back to Section 2 Easy Start 1 Designing a Programme From the inf
38. lace but the procedure will display it Le 10 will be accepted as 1 0 100 or 10 0 will be accepted as 10 0 The allowance range of values is 0 250 PARAMETER RESET LOADS 0 TO ALL DATA VALUES NOTE 1 As time is required to enter all the date the standard keypad time outs are suspended 2 We recommend that the required values are written in tabular form as shown before programming commences Then enter all Block A values before entering all Block b values Ref PANEL MANUAL LMPIM 2 47 APPENDIX 1 Example Flow Special Flume Mapping Use Example 5 on Page 39 but substitute a special U throat flume with maximum flow 39 litres second at 30 cm hd First create the following table from the relationship of head and flow which must be given to the special flume litres sec to o oo jo s oa ECT ota Norea 25s noria nonea 0 s IEC IC 0 s sorea norse 0 4 tad nora 258 nonsen Notes 0 5 votas nous 0 A NOTE 1 Points 10 to 16 not used leave at factory default value 2 A values must be whole numbers no decimals allowed 3 b values must be entered as the tabulated value the decimal will be automatically allocated Now continue programming the instrument as follows Ref PANEL MANUAL LMPIM 2 48 APPENDIX 1 Programme the instrument exactly as Example 5 on Page 39 except Change Pr 45 Goto Pr 44 Press Pr 44 Press DSP Press ENT Press DSP Pres
39. mistake has been made the following routine clears the programme back to the known starting position of the factory set values shown on page 55 It is also advisable to return to the factory default values before building a programme for a new application This is achieved as follows Press MODE to display PROG T immediately to display a Pr number 99 to display Pr 99 DSP to show CE to clear the display ENT to display COdE requesting the security code 9753 ENT the display will now show P rES followed by t rES and finally DSP to display Pr 99 and now the new programme can be entered The above is a brief introduction To understand programming completely it is necessary to read the detailed section describing Programming Section 3 along with the parameter descriptions Section 4 and the examples Section 5 before continuing Ref PANEL MANUAL LMPIM 2 13 SECTION 3 PROGRAMMING Principle The principle of programming and the two modes run and PROG have already been described on page 9 Keypad Definitions Are fully described on page 10 Display Descriptions The following display codes are used PROG Precedes programme mode run Precedes run mode Pr XX Parameter number COdE Security code request No value FULL Numerical overflow of display i e value too large to display FUL Negative numerical overflow Check that Pr 43 is correct P rES Resetting to factory
40. ncluded Check search should be used where fill rates can sometimes be greater than that entered at Pr 6 or if the transducer is liable to be submerged Echo Velocity D 344 1 i e speed of sound in air at 20 C If operating through any medium other than air enter the velocity of sound through that medium in metres per second Ref PANEL MANUAL LMPIM 2 30 SECTION 4 Miscellaneous Pr 71 Pr 72 Pr 73 Pr 74 Correction Value D 0 00 Both negative and positive values can be input This value must be entered in the units selected at Pr 2 This parameter has two uses 1 It can be used to correct minor reading errors on the display It can be used to prevent loss of echo when the target can go further away from the transducer than the desired span e g a When a channel floor is lower than the zero point of a V notch weir b To set an elevated zero level in a vessel which is not normally completely emptied Add the extra depth to Pr 3 and enter minus the extra depth at Pr 71 in the units selected at Pr 2 Parameter Display D 0 The system will display continually the value of Gain by entering 67 Temperature by entering 38 Analogue output by entering 34 It can be used only for commissioning as it will be lost on power down It cannot be used in OCM mode Software Revision Number Displays the revision number of the software e g LA 14 Reset Counter This count value gives the number of time
41. om close in obstructions 1 Check for obstructions If the transducer is mounted in a Stand Pipe check for rough edges at connection with the vessel refer to figure 5 Page 6 Ref PANEL MANUAL LMPIM 2 43 k D m 4 SECTION 6 If there are no close in obstructions ensure that the isolation kit is fitted on the transducer and the transducer is mounted correctly The isolation kit should enable the transducer to move slightly it should not be solid Not applicable to flanged transducers Check the entry at Pr 5 Blanking distance and return to 0 5m if reduced from factory setting May be caused by rate of change Pr 6 being too small Reading is lower than expected 1 Ze Check that Pr 3 and Pr 4 are correct for the application It can be caused when the level rises into the blanking zone The system can then lock on to a multiple echo and may continue tracking the multiple when the level decreases Using check search Pr 69 should rectify this situation but preventing the level entering the blanking zone is the preferred solution It can also be caused by the level moving at a much faster rate than is allowed for by the defined rate of change Pr 6 To solve the problem the rate of change value should be increased to more closely match the real rate Reading changes in steps x 1 This is usually caused by the rate of change value Pr 6 being too small to keep up with the process To re
42. on set Pr 56 and Pr 57 to zero G Care should be taken if pump sequence and pump run on are defined together as pump run on will be assigned to the last pump to turn off which could be any of those in the sequence Ref PANEL MANUAL LMPIM 2 29 SECTION 4 Echo Detection Pr 68 Pr 69 Pr 70 Note Entries have different meanings for Liquiflex and Multiflex Echo Processing Algorithm Each system has two echo extraction techniques which are capable of determining the true echo for the majority of applications where an echo is present For Liquiflex D 2 Enter 1 All vessel viewing This technique continuously looks for echoes over the complete vessel It is suited to applications that have very rapid level changes but it is more sensitive to parasitic echoes Enter 2 Windows This technique positions a narrow window around the target it is tracking to enable it to ignore a large amount of spurious noise For Multiflex D 1 Enter 1 For solids applications This technique looks for the highest level within the transducer view Enter 2 For liquids This technique positions a narrow window around the target it is tracking to enable it to ignore a large amount of spurious noise Check Search D 1 Only available if Pr 68 is set to 2 It enables the instrument to look outside its window at intervals to check that there are no other relevant echoes within the transducers view Enter 1 2 Not used I
43. ormation contained within this manual and the knowledge of the application produce on paper the correct values for the parameters required use page 55 for the parameter entries To help you with this see the examples in Section 5 on pages 35 to 40 Details of all the parameter options are listed on pages 19 to 34 Ref PANEL MANUAL LMPIM 2 16 SECTION 3 2 Entering a new Programme Sequence to enter a new programme or modify the existing one a CAUTION Press MODE When display shows PROG press 1 and then press DSP followed by ENT Display will show COdE and security code must be entered factory default is 9753 For a new code see page 15 Display will now show the value of Pr 01 or the last Pr number used indicating that the correct security code has been entered If the unit is being programmed for a new application it is recommended that all parameters are reset to the factory programmed values as follows 1 Display Pr 99 2 Press DSP to show 3 Press CE to obtain a clear display 4 Press ENT and the display will show P rES then t rES and then 5 Press DSP and enter Pr 01 6 Press DSP to display the value of Pr 01 If a modification is being made to an existing programme then the sequence re commences here The new values for any parameter should be input checking that the value is stored correctly The parameters can be accessed in series using A and W keys or individu
44. r 46 Any unit m3 litres gallons etc but 9999 or less Enter time base Pr 47 Choose secs mins hours days For Rectangular Flume Pr 45 15 Pr 81 Enter throat width In units selected Pr 02 Pr 82 Enter channel width Pr 83 Enter throat length Pr 84 Height of hump 0 if none For Rectangular Weir Pr 45 16 Pr 85 Enter crest width In units selected Pr 02 Pr 86 Enter channel width Pr 87 Enter crest height For V Notch Weir Pr 45 17 Pr 88 Enter full angle in degrees e g 120 90 53 1 28 1 Pr 89 Enter channel width In units selected Pr 02 Pr 90 Enter vertex height Note that all other standard flow parameters are available i e Pr 48 Totaliser display conversion Pr 49 Control external counter Pr 50 Penstock control Pr 71 Correction value Pr 98 Clear OCM totaliser Ref PANEL MANUAL LMPIM 2 54 APPENDIX 5 LIQUIFLEX PARAMETER SETTINGS Multiflex setting Basie Set up P TEO TT ETS IIS T Application 2 e Flow Exponent 1 _ 2 Unis f o dS Po max lowRate 0 S 3 Empi Distance 1003 __ A Time Base forFlow 1 3 Operational Span 1005 48 Tota ise Display Conv 0 __ 5 Blanking Distance 05 _ f Contr forExt Sampler 0 _ _ 6 Rate of Change _1 __ 50 Penstock Control 1 _ Rays o o OO Poo dT i 8 Reyi fof _ 51 PumpSequence f 1 9 Rayi f 0 Dosey 1 _ 10 Relay TResar f o _ 3 Pump Exerciser 1
45. r tighten the bolts on flange construction transducers Flange transducers are not pressure rated and are suitable only for atmospheric pressure CENELEC approved transducers must be mounted and wired in accordance with the appropriate National Standards concerning installation in hazardous environments For differential applications mount both transducers at the same height above the zero datum point For open channel flow applications the transducer must be mounted upstream of the flume or weir as detailed in BS3680 usually 3 or 4 times maximum head Ref PANEL MANUAL LMPIM 2 SECTION 1 KEEP TRANSDUCERS AND DO NOT AIM THROUGH AVOID ROUGH EDGES TEMPERATURE COMPENSATION HOLES IN THE TANK IN STANDPIPES PROBES OUT OF DIRECT SUNLIGHT 4 KEEP TRANSDUCER PERPENDICULAR AVOID INFLOWS OR TO LIQUID OTHER OBSTRUCTIONS Standpipe Installations In many applications access to a vessel must be made via a standpipe However it is necessary to observe some basic rules when fitting transducers into standpipes BLANKING Parameter 5 should always be set at least 150mm longer than the length of the standpipe STANDPIPE should be in accordance with the following table DIMENSIONS Flange size and minimum Maximum length bore of Standpipe of Standpipe 3 75mm 300mm 4 100mm 300mm 6 150mm 400mm 8 200mm 600mm 12 300mm 600mm e g Using a 4 flanged transducer would require the standpipe length to be no more than
46. rential applications the value required is the maximum difference in the levels to be measured Ref PANEL MANUAL LMPIM 2 19 SECTION 4 Pr 5 Blocking or Blanking Zone D 0 50 The distance in front of the transducer within which the product should not enter and within which no return echoes will be processed It is important to ensure that the product being measured does not enter this zone Enter in the units selected in Pr 2 DO NOT REDUCE THE FACTORY SET VALUE WITHOUT REFERENCE TO HYCONTROL Pr 6 Rate of Change D 1 00 This value should be as small as possible but greater than the maximum rate of change of level Do not change this value unless you know that the rate of change is greater than 1 0m min or that the system continually tracks a level lower than the actual level If it is necessary to change the value enter the new value in units per minute selected in Pr 2 The suggested range of values is 0 1 to 10 metres min or the equivalent Pr 7 Decimal Display D 2 O No decimal places allowed 1 Upto 1 decimal place allowed 2 Up to 2 decimal places allowed default 3 Up to 3 decimal places allowed Relays The 5 relays can be assigned to various functions depending on the application as shown below Hysteresis is fully adjustable so for most functions it is necessary to enter both set and reset values The relay state under normal operating conditions is defined as e normally energised
47. s DSP Press A Press DSP Press DSP Press V Press Press DSP Press DSP Press A Press DSP Press TEST Ref PANEL MANUAL LMPIM 2 from 2 to 4 which denotes Special Flow Device and proceed as follows to display Pr 44 to show to show A1 to show value of A1 default 255 Key in the value O from Table 1 and press ENT to show Al again to show A2 to show value of A2 default 255 Key in the value 8 from Table 1 and press ENT Continue for all points which you need to use up to A16 Any points not used must be left at the default of 255 to display the last A number used then several times to return to A1 to show b1 to show value of b1 default 0 Key in the value 0 from Table 1 and press ENT to show b1 again to show b2 to show value of b2 default 0 Key in the value 11 from Table 1 accepted as 1 1 Continue for all points which you need to use up to 16 Any points not used must be left at the default of 0 then DSP to show Pr 44 Leave the linearisation part of the programme by displaying any other parameter or go into RUN mode 49 APPENDIX 1 EXAMPLE Vessel Mapping Transducer of level 110 100 90 80 70 Vessel or channel symmetrical about c 1 60 50 40 30 Required Values A b Head or of flow or Level volume No0_DdDUAAuN Ref PANEL MANUAL LMPIM 2 50 Transceiver Enclos
48. s that the system has been powered down or reset since the last time the counter was zeroed It is useful for checking if the power supply is erratic Ref PANEL MANUAL LMPIM 2 31 SECTION 4 Test Parameters Pr 75 Pr 76 Pr 77 Pr 78 Digital Outputs D 0 To aid commissioning and the testing of external wiring it is possible to define the status of all five relays when in PROG mode Press DSP then Enter 0 To de energise all relays ADD 1 To energise relay 1 ADD 2 To energise relay 2 ADD 4 To energise relay 3 ADD 8 Toenergise relay 4 ADD 16 To energise relay 5 e g Toenergise relays 2 and 5 enter 18 The defined relay state will be maintained until over written or until PROG mode times out 6 minutes The time period can be extended by pressing a key during this period to reset the time out counter Hardware Test Press DSP then ENT to test LEDs LCD and relays The LCD will flash all segments and the LEDs will count up in binary Press CE to end test or let it time out CAUTION DO NOT USE THIS TEST WHEN CONNECTED TO PUMPS OR RELAYS USING THIS PARAMETER WILL OPERATE ALL RELAYS AND MIGHT START PUMPS ALARMS ETC Transmitter Test Press DSP then ENT the transmitter should pulse continuously made visible by the neon By the use of an oscilloscope the return echo can be observed if required Also useful to ascertain if a transducer is correctly connected as it will
49. scroll press CE Ref PANEL MANUAL 55 APPENDIX 6 PARSHALL FLUMES The OCM flow exponent Pr 45 has been expanded to include 10 Parshall flume profiles The data for the selected flume is loaded into the flume mapping system Pr 44 from tables held in memory Size Exponent Pr 45 5 1 2 3 24 inches 1 550 6 6 inches 1 580 Tas 9 inches 1 530 8 12 inches 1 522 9 18 inches 1 538 10 36 inches 1 566 11 48 inches 1 578 12 7 inches 1 595 13 9 inches 1 606 14 10 12 15 20 feet 1 600 25 30 40 50 Maximum head is entered in Pr 4 and the associated maximum flow in Pr 46 If one of the values is known the other can be found in the flume tables or by calculation from Q KH GPM where H Inches Q US GPM and K Constant for flume size for imperial gallon multiply K factor by 0 8 Flume Size Flume Inches K Factor for US GPM Size Feet K Factor for US GPM l 3 22 10 331 60 2 6 45 12 393 70 3 9 46 15 486 90 6 18 20 20 642 10 9 30 80 30 797 40 Le 40 90 40 1263 00 18 58 90 50 1574 00 24 76 30 36 110 00 48 142 00 72 204 70 96 256 60 Ref PANEL MANUAL 56 Larchwood House Orchard Street Redditch MYLAN TITOL Worcestershire B98 7DP AAEE cea Tel 01527 406800 Fax 01527 406810 Web www hycontrol com Email sales hycontrol com LMPIM 2
50. t span flow volume etc can be entered here A value of zero is ignored Pr 34 Analogue Output Test D 0 00 This parameter can be used to examine the last analogue output value set up by the instrument Also any value in the analogue output range can be entered for loading to the current output and can be measured at the output terminals to test the external analogue circuitry Temperature Compensation Pr 37 Temperature Sensor Enable D 1 1 No sensor attached 2 Sensor attached Pr 38 Compensating Temperature D 20 C If no probe is fitted the vessel temperature may be entered here Pr 39 Temperature Sensor Test D 0 00 Displays the sensor resistance in K Ohms Typically 9 5 at 20 C If value shows 0 00 after switching Off and On then either no sensor is connected or there is a short circuit or open circuit in the system Ref PANEL MANUAL LMPIM 2 24 SECTION 4 Volume Conversion Pr 40 Vessel Shape D 0 0 no volume conversion 1 flat bottomed vessel and percentage of span 2 7 standard shapes as shown below 8 vessel linearisation see Pr 44 ral ERG ENTER 2 i a mia 5 SN PER EBAL Oro i ls pot A ENTER 5 i E i 3 e Pra i ENTER 4 yf AA yon mo Te i Spis ES i 8 j D 7 Pra pial 7 T ea ee ies O A HALF SPHERE BOTTOM i i Pra j A IO foe ahs cual Vet i Pr 41 Vessel Dimension H D 0 00 Enter H where indicated above in units selected at Pr 2 Pr 42 Vessel Dim
51. taneous readings of High total Low total Head and Flow can be obtained by pressing keys 1 to 4 The display will revert back to Flow after 15 seconds Ref PANEL MANUAL LMPIM 2 39 Example 6 SECTION 5 Open Channel Flowmeter With Penstock Control Pr 1 4 The application As example 5 but additionally to control a penstock via Relays 1 and 2 to modulate flow between 25 and 30 litres per second ENTER Pr 9 30 Pr 10 25 Pr 12 8 Pr 13 4 ENTER Pr 50 2 ENTER Pr 1 Pr 6 as example 5 then go to Pr 9 Defines top flow limit 30 litres per second Defines low flow limit 25 litres per second Duration of penstock drive pulse is 8 seconds Time between drive pulses is 4 seconds Pr 14 Pr 48 as example 5 then go to Pr 50 To initiate penstock control Pr 98 as example 5 Ref PANEL MANUAL LMPIM 2 40 SECTION 6 COMMISSIONING FAULT FINDING Basic Hardware a The display is blank or frozen the leds are unlit and the neon does not fire 1 Ensure that power is being supplied to the board and that it is correctly wired Refer to pages 2 3 and 7 Ze Check fuses F2 and Fl are not damaged 3 Check that the supply voltage is within specified levels See Section 1 Page 3 A large voltage drop can cause the unit to lock or to show last distance or level reading b The fuse blows continuously l Power down and fit a new fuse refer to Page 3 Disconnect all cabling from the unit ex
52. to be removed without affecting the control levels Pumps are re assigned downwards so that the highest level is not used therefore normal control levels are maintained for lower level setting Enter 0 All pumps in Drop out pump 1 Drop out pump 2 Drop out pump 3 Drop out pump 4 Drop out pump 5 UI Bu NR 1 NOTE a The system assumes that the lower numbered pumps turn on first b CAUTION A PUMP NOT INCLUDED IN AN ALTERNATING SEQUENCE BUT PROGRAMMED INTO THE FIXED PART OF THE SEQUENCE WILL BE SUBSTITUTED INTO THE ALTERN ATING SEQUENCE TO REPLACE A PUMP DROPPED OUT c This feature should not be used if the relays are being used for a mixture of pump control and alarm functions Pr 56 Pump Run on Interval D 0 00 When submersible pumps are used it may be necessary to pump down occasionally to clear the sludge from the bottom of the well This feature is controlled by Pr 56 and Pr 57 Once in every interval defined by Pr 56 the pump will run on for the time period defined by Pr 57 Enter the time interval in hours between each run on cycle Pr 57 Pump Run on Time D 0 Enter the pump running time in seconds Maximum 120 seconds Only one run on cycle occurs per interval as set by Pr 56 NOTE a Caution is required when choosing a value for pump run on time as extended pump run on can lead to cavitation causing air locks or pump damage b As overflow can occur do not use pump run on for pump up operati
53. ts of a pulse train of variable time base which drives the penstock up and down The time a is set by Pr 12 and b is set by Pr 13 in seconds this allows any shape drive train to be defined The control will maintain the flow between two limits a high limit set by Pr 9 and a low limit set by Pr 10 If the flow exceeds the value in Pr 9 relay 2 drives the penstock down If the flow is below the value in Pr 10 relay 1 drives the penstock up See Example 6 Ref PANEL MANUAL LMPIM 2 27 SECTION 4 Pump Controls Pr 51 Pumps Sequencing D 1 In order to even out the wear of pumps it is possible to alternate the sequence in which pumps are used Pr 52 must be set to 1 on Multiflex Enter 1 Sequence by set points i e no alternation 2 Alternate RL1 and RL2 3 Alternate RL1 RL2 and RL3 4 Alternate RL1 RL2 RL3 and RL4 5 Alternate RL1 RL2 RL3 RL4 and RL5 NOTE When using Pr 51 with Pr 52 set to 2 5 Liquiflex Pr 52 Pr 53 Pr 54 1 All switch off points should be set at the same level 2 Do not include alarm function relays in duty standby routines Duty Assist Standby Pump Control D 1 Duty assist is where pumps are switched on by set point and kept on to assist earlier pumps Duty standby is where only one of the pumps specified for duty can be on at a time i e when the set point for the second pump is reached and it switches on the first pump will switch off Enter 1 Duty ass
54. ure Dimensions Weight Power Supply Fuse Rating Range Accuracy of Change in Level Ambient Temperature Resolution Analogue Output Relay Outputs Indication Interface Failsafe Damping Blanking Transducer Type Liquiflex Multiflex Temperature Compensation Frequency in KHz Beam Angle at 3dB Body Material Face Material Process Temperature Protection Weight Kg NOTE Ref PANEL MANUAL LMPIM 2 APPENDIX 2 SPECIFICATION NORYL DIN43700 IP55 to front of panel IP20 behind panel 144H X 96W X 140D mm 1 75Kg 110 230Vac 10 selected automatically 50 60Hz 12VA 24Vdc 25 10 9W Separate terminals y F2 T160mA for ac supply Fl T315mA for 24Vdc supply F3 amp F4 T80mA Liquiflex up to 10 metres liquids only Multiflex up to 15 metres liquids and solids 0 25 of measured distance from the transducer at constant temperature of 20 deg C 40 deg C to 70 deg C 2mm or 0 1 of range whichever is the greater 4 20mA into 750 Ohms 16 bit Short circuit protected and opto isolated on ac powered units Not opto isolated on 24Vdc units Maximum allowable degradation of signal 2 under extremes of transient and constant conducted immunity tests to EN50082 5 multifunction SPDT relays rated 8A 250Vac 30Vdc resistive with gold contacts Integral 4 digit LCD 12mm high characters 5 red LED s to indicate relay status 5X4 integral
55. variations are experienced and no compensation is applied 4 Is the vessel empty with a conical parabolic sloping or spherical bottom This commonly causes loss of echo if the transducer cannot be mounted over the centre of the vessel When the vessel becomes empty the pulse from the transducer hits the sloping sides of the bottom section and the signal is not reflected back to the transducer Under this condition the display will indicate LOSt but the failsafe designation will operate until product returns and the system will automatically recover and track level If the transducer cannot be mounted centrally the problem may be overcome by the installation of a target plate 5 Connect a known good transducer to the instrument and check the operation If the known transducer gives a good signal check the instruments gain by pressing the TEST key The number displayed ranges from 1 100 and the lower the number the better the signal strength If the confidence figure is 50 100 check the surface level for foam or other materials which may float in and out of the beam and cause poor echoes Ref PANEL MANUAL LMPIM 2 42 e g h i dD SECTION 6 The keypad fails to respond 1 Check for correct alignment of connection from keypad to main board 2 Check key press sequence is valid refer to Programming Section 3 Power down unit and wait 5 seconds Power up and immediately press MODE This should result in P
56. ver These keys also have secondary functions indicated above them See Figure 1 enabling the operator to view the results being obtained by the instrument during its normal RUN cycle Primary Key Functions 9 DO DSP ENT Numerical Values Decimal Point Negative value also used to slow down simulation Clear Entry also used to leave test functions Pr 75 to Pr 78 Returns display to normal RUN mode after viewing secondary functions also speeds up simulation Pr 78 Alternates between RUN and PROG mode Displays gain in RUN mode and allows parameter interrogation and simulation hold in PROG mode Increase parameter number also control of simulation direction Decrease parameter number also control of simulation direction Display parameter number value alternately Enter a new value or initiate a system test under Pr 75 to Pr 78 Active Secondary Key Functions During normal RUN mode it is possible for an operator to obtain the data defined as secondary function without interrupting normal operation by pressing the appropriate key Le Keys 1 4 Key 5 Key 6 Key 7 Key 8 CE Test ENT DSP y Show high totaliser low totaliser head and flow when in the OCM mode Head will always show level Relay 1 Hours energised Relay 2 Hours energised Relay 3 Hours energised Relay 4 Hours energised Relay 5 Hours energised Relay 1 Number of times energised Relay 2 Number of times en
57. y de energised De energise to alarm Energise to start motor For Level Differential ENTER values in display unit as selected at Pr 2 For Flow ENTER values in unit selected at Pr 46 For Temperature ENTER values in deg C valid only if probe fitted For Totaliser Refer to Pr 49 For Loss of Echo or Run Prog no set or reset entries are required Failsafe D 3 for all On loss of power all relays will de energise For other fault conditions e g damaged transducer the failsafe relay state after time delay selected at Pr 29 is selectable Pr 23 Relay 1 Failsafe Pr 24 Relay 2 Failsafe gt Enter 1 Energise One option for Pr 25 Relay 3 Failsafe 2 De energise each relay Pr 26 Relay 4 Failsafe 3 Hold state Pr 27 Relay 5 Failsafe NOTE Relay designated LOSS OF ECHO will always de energise Relay 5 Failsafe is not applicable in differential or OCM mode Pr 28 Analogue and Display Failsafe D 3 Enter 1 Low Do High 3 Hold Value Pr 29 Failsafe Time Delay D 120 Enter value in seconds before unit goes to selected failsafe positions Minimum value is 30 seconds Ref PANEL MANUAL LMPIM 2 22 SECTION 4 Analogue Pr 30 Analogue Output D 1 Enter 1 4 20mA 2 20 4mA gt related to span Pr 4 or Pr 33 3 0 20mA 4 20 OmA 5 4 20mA gt will over range 0 24mA if normal span 6 0 20mA Pr 4 is exceeded The output represents different variables depending
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