MULTIPLE INTERFACE SHAFT ENCODER MODEL OPERATIONS & MAINTENANCE MANUAL

Transcription

1 MULTIPLE INTERFACE SHAFT ENCODER MODEL OPERATIONS & MAINTENANCE MANUAL Prt No Revision - B 7-Oct-04 Sutron Corportion Ridgetop Circle Sterling, VA (703) (703) fx

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3 Tble of Contents 1. Introduction...1 Fetures...1 Unpcking...2 Mechnicl Fetures...2 -DT & -DM Overll dimensions:...2 Mounting footprint:...2 -DTR Overll dimensions:...3 Mounting footprint: Quick Strt for Sutron Dt Loggers / Xpert/Xlite...4 StlinkLogger Cbling...6 SDI-12 Wiring...6 RS-232 Wiring...6 RS-485 (Differentil SDI-12) Wiring Bench Setup nd Opertion...8 Shft Encoder Strtup...8 Turning on/off the Disply...8 Turning on the bcklight...8 Adjusting the contrst...8 Lyout of the Disply...9 Fctory defult configurtion...9 RS-232 Automtic Reding Mode...9 SDI-12 Commnds (Overview)...10 Setting the Address...11 Verifying the Address nd Opertion...12 Mking Mesurement...12 Exmple: (M commnd)...12 Exmple (C, MC nd CC commnds)...13 Other Mesurements...13 Setting Operting Mode (RS-232 opertion only)...14 Setting the Wheel Circumference...15 Setting the Direction of Rottion...16 Setting the Mximum Rottion Speed...16 Setting the Level Using SDI Commnd...16 Setting the Level Using Disply Button (Version 1.2 onwrds)...17 Setting the Averging Time...17 Reset the encoder to Fctory Defult Configurtion...17 Chnging the slope for M1 redings Field Instlltion...19 Instlling the Bttery...19 Leveling the shft encoder...19 Instlling the flot wheel...19 Wiring the shft encoder to the dt logger...19 Checking the direction of rottion...19 Checking the flot wheel size...20 Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini i

4 Setting the level...20 Setting Level using SDI Commnd...20 Setting the Level Using Disply Button (Version 1.2 onwrds)...20 Before leving the instlltion site Troubleshooting nd Mintennce...22 Troubleshooting...22 Mintennce Specifictions for Shft Encoder...25 Appendix A -- Commnd Reference...26 Shft Encoder Bsic SDI-12 Commnds...26 Shft Encoder Extended Commnds...32 Appendix B Connector Pins...35 DB9 Connector...35 Terminl Block (-DT & -DTR models)...35 MIL Connector (-DM)...35 Appendix C -- SDI-12 with the Sutron 8200, 8200A, nd Entering Extended Commnds for Configurtion Purposes...36 From the Front Pnel...36 From PC connected to the RS-232 port...36 Logging dt from the M1 or M2 commnds or from ddresses bove Logging dt with multiple dt recorders...37 Setup two Sutron dt recorders with one Shft Encoder...37 Setup two Sutron Dt Recorders with two Shft Encoders...37 Appendix D RS-232 setup for use with the shft encoder...38 Additionl PROCOMM notes...38 Appendix E -- Sutron Customer Service Policy...39 APPENDIX F Commercil Wrrnty...40 SUTRON MANUFACTURED EQUIPMENT...40 NON-SUTRON MANUFACTURED EQUIPMENT...40 REPAIR AND RETURN POLICY...40 EXTENDED WARRANTY AND ON-SITE MAINTENANCE...40 ii

5 1. Introduction The SDI-12 Incrementl shft encoder Model No is designed to provide high relibility, verstility, low mintennce, nd still meet the low power requirements of typicl remote opertions. It hs been designed with the following fetures to operte in wide rnge of pplictions: NEW: DTR (Ruggedized cse) Fetures Low power consumption High ccurcy & excellent stbility Supports Metric or English configurtions Non-voltile setup Wide operting voltge Built-in 2 line by 8 chrcter disply with bcklight Auto shut-off disply to minimize totl current consumption Externlly mounted red button llows current stge reding to be displyed Externlly Accessible internl AA bttery bck-up in cse of min power loss. Vristor nd sprk gp trnsient protection User selectble clockwise/counterclockwise opertion Strobed-opticl design for precision counting nd greter ccurcy in shft revolution error detection Communiction interfces: SDI-12, SDI-12 over RS-485 nd RS-232. Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

6 Unpcking Remove the shft encoder from the shipping continer nd visully inspect the unit for signs of dmge during shipment. Additionlly, rotte the shft nd note ny grinding, scrping, or other mechnicl problems found. Report ny such dmge to the fctory immeditely to ensure prompt response nd resolution. Retin one shipping continer in the event fctory return is necessry. Plese note tht if return is required, one must first obtin return mteril uthoriztion (RMA) number by clling the Sutron Customer Service Deprtment. Mechnicl Fetures -DT & -DM Overll dimensions: Units: inches Mounting footprint: Viewed from bove. Units: inches 2

7 -DTR Overll dimensions: Mounting footprint: Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

8 2. Quick Strt for Sutron Dt Loggers The shft encoder sensor is designed to operte with wide vriety of dt recorders or other equipment. If you pln to use the RS-232 or RS-485 connection, refer to Chpter 3 of this mnul. The following sections describe the steps to connect the shft encoder to Sutron s populr dt loggers. These steps instll the shft encoder in its defult configurtion. After following these steps, you will still need to perform some dditionl setup such s setting the direction of rottion, wheel size nd current level. These steps re described in Chpter 4, Setup nd Opertion. 8200/8210 To use the shft encoder with the 8200 or 8210, follow these steps: Connect the sensor PWR IN +, PWR IN G, nd SDI DATA terminls to your Sutron 8200 / 8210 Dt Logger SDI-12 port. 8210: PWR IN+ to SDI-12 +, PWR IN G to SDI-12 G, nd SDI DATA to SDI-12 D 8200: PWR IN+ to Pin 9 of DB9, PWR IN G to Pin 7 of DB9, nd SDI DATA to pin 1 of DB9 Use the 8200/8210 SYSTEM SETUP\ENABLE SENSOR menu to turn SDI0-1 ON. If you wnt to see the shft sttus lso, turn SDI0-2 ON. Refer to the Sutron 8210/8200A Dt Logger Opertions Mnul if you do not know how to ENABLE sensors. Use the 8200/8210 VIEW\LIVE READINGS menu nd select the SDI0-1 sensor. The 8200 or 8210 will now disply the level redings from the shft encoder. Xpert/Xlite To use the shft encoder with the Xpert/Xlite, follow these steps: Connect the sensor PWR IN +, PWR IN G, nd SDI DATA terminls to your Sutron Xpert/Xlite Dt Logger SDI-12 port Xpert: PWR IN+ to SDI +, PWR IN G to SDI G, nd SDI DATA to SDI D Xlite: PWR IN+ to SDI V, PWR IN G to SDI-12 GND, nd SDI DATA to SDI-12 DATA Log into SETUP user nd go into the setup tb. Add sensor block, using the wizrd, clled SDI-12. Edit the properties of the block to ddress 0, mesurement desired (M or C). If you wnt to see the shft sttus, simply select the output 2 nd wire mesure nd log to it. Sve the setup, exit nd strt recording. Refer to the Sutron Xpert/Xlite Dt Logger Opertions Mnul if you do not know how to setup sensors. Once the system hs mesured the shft encoder, use the VIEW SENSORS tb nd select the SDI0-1 sensor. OPTIONALLY: Enter the SDI menu from VIEW SENSORS nd issues 0M! followed by 0D0! to view dt. The Xpert/Xlite will now disply the level redings from the shft encoder. 4

9 StlinkLogger To use the shft encoder with the StlinkLogger, follow these steps: Connect the sensor PWR IN +, PWR IN G, nd SDI DATA terminls to your Sutron StlinkLogger SDI-12 port (PWR IN+ to SDI-12 +, PWR IN G to SDI-12 G, nd SDI DATA to SDI-12 D). Use the StlinkLogger communictor to enble SDI-12 mesurement with the commnd 0M! nd SDI-12 prmeter 1. If you wnt to see the shft sttus, enble second mesurement with 0M! nd SDI-12 prmeter 2. Then send the setup to the StlinkLogger. Refer to the Sutron Stlink Logger Opertions Mnul if you do not know how to configure mesurements. Use the FORCE mesurements button to get reding from the sensor. The StlinkLogger will now disply the level redings from the shft encoder. Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

10 3. Cbling The Chpter describes the wiring connections needed to use the vrious communictions interfces. For documenttion of the individul pins of ech connector, plese refer to Appendix B. SDI-12 Wiring -DT Terminl Block Only three wires re needed to use the shft encoder SDI-12 interfce. The following tble contins the pin descriptions for the terminl block nd ms connector: -DM MS Connector Description Notes 1 B Power IN + Connect to Bttery or dt recorder +8 to C Power IN - Connect to Ground 2 A SDI-12 Dt Connect to dt recorder SDI Dt line The MS connector is n Amphenol A-14S-02P. The mting connector is MS3106A-14S- 2S nd its equivlents. It is vilble from Sutron seprtely. It is lso vilble with 5 foot cble with stripped nd tinned wires on the other end s Sutron Prt number RS-232 Wiring The communictions prmeters for RS-232 re: 1200 bud 7 dt bits with even prity dded s n eighth bit One stop bit Unit does not echo chrcters. Communictions progrm must be set for locl echo if you need to see wht chrcters re typed. The following tble contins pin descriptions for the DB9F connector on the shft encoder, with the corresponding RS-232 cble connections to PC. NOTE: A stndrd DB-9 mle/femle stright thru RS-232 cble should be ble to plug into PC s seril port nd into the shft encoder with these connections. Nme DB9F Pin IBM AT Connection (DB-9F cble) IBM PC or ny DTE Connection (DB-25-F cble) TXD RXD DTR 4* 4 20 Ground *Note, DTR must be sserted for the shft encoder to trnsmit. NOTE: For quick bench test or configuring of the unit, opertion off of the internl bckup bttery is possible. For long term use, the unit should hve 12 Volts pplied vi the SDI-12 connector. 6

11 RS-485 (Differentil SDI-12) Wiring Four wires re needed to use the differentil SDI-12 interfce. Differentil SDI-12 is not defined stndrd. It is low power modifiction of n RS-485 interfce. It overcomes the cble limittion of SDI-12 since trnsmitted dt is not referenced to the power supply ground. It does not utilize power consuming DC termintion resistor. It does hve trnsient protection built in tht rises the output impednce bove the level tht is normlly encountered in RS-485 pplictions. The dt signling rte nd protocol conform to SDI-12 stndrds. To use the RS-485 interfce with non- SDI-12 equipment, refer to the SDI-12 specifiction for the protocol nd timing detils. The specifiction cn be obtined t The following tble contins the connections for RS-485 wiring. Sutron s 8210 nd XLITE re cpble of using the RS-485 interfce on the shft encoder. Terminl Block Description Notes 1 Power IN Positive Bttery or dt logger +8 to +16 VDC 3 Power IN Ground Bttery or dt logger ground 4 RS-485 B + Dt (0 Volt idle stte) 5 RS-485 A Dt (5 Volt idle stte) Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

12 4. Bench Setup nd Opertion This chpter will cover the configurtion of the encoder tht cn be performed on the bench, before going to the instlltion site. In generl, follow these steps to set up the shft encoder: 1. Instll the internl bttery in the shft encoder (see Chpter 6). DO NOT leve the bttery instlled during storge or if the unit is not connected to min input power, since the bttery is lwys on nd will drin the bttery. 2. Connect the Shft Encoder to your device (see Chpter 3). 3. Rotte the shft to see if the direction of rottion is set properly. If not, use the XDR commnd to set the direction of rottion (see pge 15). 4. Set the wheel circumference nd digits of precision s desired using the XWC commnd (see pge 15). The defult vlue is Since the encoder multiples the number of turns by this circumference, the disply/output vlue will be in feet if you use 1 foot wheel nd circumference of 1.0. Other common vlues for the wheel circumference re 375 (when using 375 mm wheel) or (when using 1 foot wheel but wnt the disply/output in cm). As you cn see, the encoder tkes on whtever units you use when entering the wheel circumference. If you chnge the circumference, be sure to lso set the number of deciml plces. 5. Set the current level using the XS or S0 commnd (see pge 15). This sets the displyed vlue s well s the vlue returned by the M commnd. This is bsed the current direction of rottion nd wheel circumference. Be sure to perform steps 3 nd 4 before this step. Shft Encoder Strtup Turning on/off the Disply Whenever power is pplied to the shft encoder, the 8 digit by 2 line disply will turn on nd disply the level s shown below. (Power is pplied either when the internl bttery is instlled or, if no internl bttery is instlled, when externl power is pplied.) The disply will time out nd turn off fter 5 minutes, to turn off the disply before this, simply press the DISPLAY button. Once the disply is off, simply press the DISPLAY button gin to turn it bck on. Turning on the bcklight The disply is equipped with bck light to ssist in viewing under mny different lighting conditions. To turn on the bcklight, simply press nd hold the DISPLAY button for 2 seconds when the disply is on. Adjusting the contrst The disply contrst cn lso be set to ssist under different lighting conditions. To set the contrst, simply press nd hold the DISPLAY button until contrst strts to chnge, continue holding the button until the contrst is t redble level, nd then relese the button. NOTE: If the bck light ws off, it will turn on. While the DISPLAY button is held down, the contrst will continuously vry from it's drkest to lightest settings, repeting until the disply button is relesed. 8

13 Lyout of the Disply The level shown on the disply is the sme s returned by the M commnd. Since the shft encoder does not trck the level when not powered up, the current level my not be correct. The disply highlights this condition by plcing n L in sttus line. The sttus line will lso show the internl bck-up bttery voltge (this tkes few seconds to updte) if one is instlled, otherwise it will be floting voltge number. If the shft encoder detects n over speed condition, it will lso plce n 'S' in the sttus line next to the 'L'. An 'L' here indictes the level hs not been set L S An 'S' here indictes n over speed condition. The indictes the level. The 3.65 indictes the bck up bttery voltge. Fctory defult configurtion The shft encoder comes from the fctory with following defult vlues: Address: 0 Operting Mode: Automtic RS-232 mode enbled Wheel Circumference: 1.0 Number of Deciml plces in Result: 3 Shft direction: Clockwise s positive. Mximum Rottion speed: 2.5 Revolutions per Second Level Offset: 0 Averging time: 10 seconds Slope for M1 commnd: To issue commnds to the shft encoder vi SDI-12 or RS-485, you will need to be connected to dt recorder, such s Sutron 8200, 8210, 8400, 9210, Xpert or Stlink Logger which is cpble of issuing stndrd nd extended SDI-12 commnds. To issue commnds to the shft encoder vi RS-232, you will need to connect it to n RS-232 terminl or to computer running terminl emultion (communictions) softwre nd to power supply or bttery. Follow the instructions in Section 3 in order to mke these connections RS-232 Automtic Reding Mode The RS-232 port supports n utomtic reding mode, i.e. when n RS-232 connection is mde (DTR sserted), the unit will strt reporting the level reding out the RS-232 port. The reported level will be sme s provided by the mesure commnd (M commnd). The output is the current level followed by crrige return line feed sequence. For exmple: By defult, the vlue will hve three deciml plces, which cn be chnged (Refer Setting Wheel Circumference on how to chnge number of deciml plces). The shft encoder continues to report Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

14 the level once second. If the shft encoder receives commnd, then the utomtic reding mode will be disbled for tht RS-232 session nd the interction with the unit will become commnd driven, just like SDI-12. It is possible to mke the commnd driven mode the defult. (Refer Setting Operting Mode for further detils). NOTE: If both n RS-232 connection nd SDI-12 connection re mde to one shft encoder, the SDI-12 tkes priority. This mens tht during the time of SDI-12 commnd, the unit will not ccept commnds from the RS-232 port. Once the unit hs finish with the SDI-12 commnd, it will revert bck to ccepting RS-232 commnds. SDI-12 Commnds (Overview) The commnds to set up nd operte the shft encoder re those defined by the SDI-12 specifictions plus some extended commnds defined by Sutron. The commnds re in ASCII nd ll the replies use printble ASCII chrcters followed by <CR> <LF>. The cse of the letters is importnt. An A is not the sme s n. All commnds hve three components: the device ddress, the commnd body, nd the commnd termintion. The device ddress is single chrcter with vlues 0 to 9, A to Z, nd to z. It is the first chrcter of commnd. It is usully the number 0 (the defult ddress s shipped from the fctory) if dt recorder does not hve multiple SDI devices connected to it. The commnd body nd the responses re shown s combintion of upper nd lower cse letters. The upper cse letters re the fixed portions of the commnd nd the lower cse letters re the vribles or vlues tht re replced by ctul numbers. Vlues re entered in the form of polrity sign (+ or ) followed by up to seven digits, including deciml point. The commnd termintor is n exclmtion point (!). This works with both the SDI-12 nd RS- 232 interfces. With RS-232, you hve the dditionl option of terminting the commnd with crrige return <CR> nd/or line feed <LF> in plce of the exclmtion point. NOTE: ALL SDI-12 COMMANDS ARE UPPER CASE. The shft encoder replies to ll SDI-12 commnds it supports. If the shft encoder receives commnd it does not support, no reply is mde. The reply to mesurement commnd (M) will hve one of two forms: 0000 Or tttn followed by Where is the ddress nd the 0000 indictes tht there is no further messge from shft encoder to send Where is the ddress, ttt is the mount of time, in seconds, the shft encoder needs to mke the mesurement or process the commnd nd n is the number of vlues tht cn be collected. As soon s the mesurement is over, the sensor will lso respond with its ddress (if ttt is not 000). This response is clled service request. 10

15 Setting the Address The defult SDI-12 ddress is 0. If you re using the shft encoder connected with other SDI-12 devices, you will need to chnge the shft encoder ddress. Otherwise, skip this section. The ddress simply lets multiple devices shre the sme wiring. When the dt recorder needs dt from prticulr sensor, it requests dt using n ddress. Only the device with the mtching ddress will reply. For convenience in setting up the unit when only one sensor is connected, the shft encoder supports wildcrd ddresses of sterisk (*) nd question mrk (?). In order to set the ddress by SDI-12 commnd or RS-232 commnd, no other SDI-12 devices connected to the system should be set to ddress 0 or to the desired Shft Encoder ddress. Hint: If you do not know the ddress of prticulr shft encoder, use the unknown ddress commnd to hve the shft encoder identify itself. There re 3 forms of the unknown ddress commnd:?! *! *X?! NOTE: In order for the unknown ddress commnd to work, there should be only be one shft encoder connected. The SDI-12 commnd for setting the shft encoder's ddress is 0An! Where 0 is the current ddress of the device, n is the new SDI-12 ddress (0 to 9, A to Z, to z). The shft encoder will issue Acknowledge Active response to verify the ddress set. If you do not get this messge, try the commnd gin NOTE: The shft encoder will not respond if the commnd is invlid. As n exmple, the following commnd would set the shft encoder ddress to 5: 0A5! Subsequently, the ddress cn be set to different ddress, 9 for exmple, by the commnd: 5A9! Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

16 Verifying the Address nd Opertion The shft encoder will respond with n identifying messge when it receives the send identifiction commnd, I. The formt of the commnd is: I! Where is the ddress for the shft encoder. The shft encoder will reply with 13 SUTRON mmmmmm1.0ssssssssvvv, where 13 SUTRON mmmmmm 1.0 sssssss Svvv SDI-12 ddress supports SDI version 1.3 commnds mnufcturer SUTRON model number will return portion of Dx model number hrdwre revision level sensor seril number the softwre revision If you do not get reply, check the ddress using?! or *! with no other SDI device connected nd mke sure you use the proper ddress for the sensor. Mking Mesurement There re four clsses of mesurement commnds: M commnds (Mesurement Commnds), C commnds (Concurrent Mesurement Commnds), MC commnds (Mesurement commnds with CRC-16) nd CC commnds (Concurrent Mesurement Commnds with CRC-16). When collecting dt from severl SDI-12 sensors tht hve long mesurement times, utilizing concurrent commnds cn shorten the complete dt collection cycle. The dt recorder cn initite the mesurement on ll the sensors nd when ech finishes, then collect the dt from ll of them. Since the mesurement times overlp, the complete dt collection cycle is shorter. There is no dvntge to the concurrent mesurement C commnd when using one sensor. In tht cse, M commnds should be used becuse the sensor issues service request s soon s M commnd mesurement is over, nd therefore, the dt recorder cn get the dt erlier without witing for the whole time. The mesurement commnd clsses with CRC-16 (MC nd CC) offer dditionl dt integrity checking over the non CRC-16 commnds (M nd C). The non CRC-16 commnds offer dt integrity checking in the form of prity nd the SDI-12 commnd structure. The CRC-16 commnds offer some dditionl dt integrity through the ddition of CRC-16. Since the CRC- 16 commnds re brnd new in SDI-12 version 1.3, not s mny dt recorders support them. In most pplictions, lck of this support on the prt of the dt recorder will not be missed since non CRC-16 SDI-12 commnds still offer significnt dt integrity checking. If the dt recorder supports CRC-16 commnds, then it is recommended to use them when collecting dt from this sensor in order to benefit from the incresed noise immunity. Exmple: (M commnd) The formt of the M commnd to the Shft Encoder is: 12

17 M! is the ddress chrcter nd M is the commnd to mke mesurement Most dt recorders will issue this commnd nd utomticlly hndle the reply to collect dt. You cn lso issue the commnd yourself. In reply, the shft encoder will respond with ttt2 indicting tht fter ttt seconds re llowed for the mesurement, 2 vlues cn be collected. When the mesurement is complete, the shft encoder responds with service request where is the ddress chrcter Note tht you still do not hve ny dt from the shft encoder. To request the dt fter mesurement, is the ddress chrcter nd D0 is the commnd to retrieve mesured dt. Note: the number zero follows D, not the letter O. In this cse, the shft encoder will reply with two vlues in the formt: vs is the ddress, v is the dt vlue hving formt of polrity sign (+ or ) followed by up to seven digits including deciml point, s indictes the shft sttus (0=OK, 64=level not set, 128= over-speed detected, 192=level not set nd overspeed) tht is lwys preceded by + sign The v Indictes the instntneous level vlue bsed upon the current wheel circumference (XWC), direction of rottion (XDR), nd lst level set (XS or S0). Exmple (C, MC nd CC commnds) The C commnd is used to mke concurrent mesurement. It opertes identicl to the M commnd except tht the shft encoder does not issue service request when the mesurement is complete. The MC commnd is identicl to the M commnd except tht the shft encoder dds CRC to the end of the dt. The CC commnd is identicl to the C commnd except tht the shft encoder dds CRC to the end of the dt. Other Mesurements The SDI-12 stndrd llows for other mesurement commnds such s M1, M2 etc., other current mesurement commnds such s C1, C2, etc., other non-concurrent mesurements with CRC-16 such s MC1, MC2, etc, nd other concurrent mesurement with CRC-16 such s CC1, CC2, etc. This unit mintins symmetry cross ll four clsses of commnds, tht is, it returns the sme Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

18 informtion to C1 s it does to M1 or MC1 or CC1. The shft encoder supports the following optionl mesurement commnds: M1! C1! MC1! CC1! M2! C2! MC2! CC2! M3! C3! MC3! CC3! M4! C4! MC4! CC4! M5! C5! MC5! CC5! M6! C6! MC6! CC6! Apply M1_Slope to convert from rottions to output vlue. Returns one vlue. (Note: Use XUP commnd to set the M1_Slope) Mesure temperture (Celsius). Returns two vlues: first vlue is temperture in Celsius, nd the second vlue is 0 indicting tht the temperture vlue is in Celsius. Mesure Contrst voltge nd Bttery voltge. Returns two vlues: first one is the Contrst voltge; second one is Bttery voltge. Mesure Averge, Mximum nd Minimum level. Returns three vlues: Averge, Mximum nd Minimum level over n seconds set by XT+n! Commnd. Mesure Bttery voltge. Returns internl bckup bttery s voltge. Get time elpsed since reset. Returns three vlues: Hours, Minutes nd Seconds. Remember to issue the Commnd fter the mesurement is complete in order to retrieve the dt. Setting Operting Mode (RS-232 opertion only) The RS-232 port supports n utomtic reding mode, i.e. when n RS-232 connection is mde (DTR sserted), the unit will strt reporting the level reding out the RS-232 port. The reported level will be sme s provided by the mesure commnd (M commnd). The output is the current level followed by crrige return line feed sequence. For exmple: The shft encoder continues to report the level once second. If the shft encoder receives commnd, then the utomtic reding mode will be disbled for tht RS-232 session nd the interction with the unit will become commnd driven, just like SDI

19 The user cn switch between these two operting modes: Automtic reding nd Commnd driven s defult on RS-232. The form of this commnd is: XOP+m! Where is the ddress chrcter, XOP is the extended commnd to set the operting mode nd m represents the operting mode. The vlid vlues for m re: 0 RS-232 provides level reding (sme s with M commnd) every second. 1 RS-232 commnd driven by sme commnds s SDI-12 For exmple, 0XOP+0! 0XOP+1! Will mke the utomtic level reding on RS-232 s defult. Whenever RS-232 connection is mde (DTR is sserted), the encoder will strt sending level reding once second. Will mke commnd driven mode s defult mode on RS-232. Whenever RS-232 connection is mde (DTR is sserted), the encoder will not send ny level reding on it s own, unless commnd is issued. NOTE: If both n RS-232 connection nd SDI-12 connection re mde to one shft encoder, the SDI-12 tkes priority. This mens tht during the time of SDI-12 commnd, the unit will not ccept commnds from the RS-232 port. Once the unit hs finish with the SDI-12 commnd, it will revert to ccepting RS-232 commnds. Setting the Wheel Circumference The wheel circumference nd number of deciml plces to report the result re set together. The form of this commnd is: XWC+n+d! Where is the ddress chrcter, XWC is the extended commnd to set the wheel circumference, n is the wheel circumference in desired units, d is the number of deciml plces to report the result. Since the encoder multiples the number of turns by this circumference, the disply nd output vlue will be in feet if you use 1 foot wheel nd circumference of 1.0. The encoder tkes on whtever units you use when entering the wheel circumference. If you chnge the circumference, be sure to lso set the number of deciml plces in the result. For exmple with 1 foot wheel: 0XWC+1+3! 0XWC+12+1! 0XWC ! 0XWC ! Will mke the mesurement report in feet with 3 deciml plces, Will mke the mesurement report in inches with 1 deciml plce, Will mke the mesurement report in millimeter with no frction prt, Will mke the mesurement report in meters with 3 deciml plces. Using 375 mm wheel the following re some of the possibilities: 0XWC+375+0! 0XWC ! 0XWC ! Will mke the mesurement report in mm with 0 deciml plces, Will mke the mesurement report in meters with 3 deciml plces Will mke the mesurement report in feet with 2 deciml plces NOTE: Level must be set fter using this commnd. Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

20 Setting the Direction of Rottion By defult, clockwise rottion is positive nd counter-clockwise is negtive. The SDI-12 commnd to chnge this is: XDR+d! Where is the ddress chrcter, XDR is the extended commnd to set the direction of rottion specified by d. The vlid vlues for d re: 0 Counter-clockwise s positive 1 Clockwise s positive NOTE: Level must be set fter using this commnd. Setting the Mximum Rottion Speed The current consumption increses with the increse in mximum supported rottion speed. Therefore, it is dvisble to keep mximum rottion speed to wht is ctully required. By defult, it is set to 2.5 revolutions per sec. The SDI-12 commnd to chnge this is: XRS+s! is the ddress chrcter, XRS is n extended commnd to set the mximum rottion speed s revolutions per second. For exmple: 0XRS+3.4! Will set mximum rottion speed to 3.4 revolutions per second. If the wheel rottes fster thn 3.4 rottions in second then 'S' chrcter will pper in the second line of the disply to indicte n over speed condition. The over speed condition is clered when the current level is set s described below. On stndrd unit, the mximum gurnteed rottion speed is 5.5. Setting the rottion speed higher thn this cn result in SDI-12 communictions problems nd other inpproprite behvior. Setting the Level Using SDI Commnd The level is set using one of the two commnds below. The level must be entered in terms of the current mesurement units (I.E. If the encoder is t the fctory defult of 1 foot wheel, then the number entered is in terms of feet) XSd! or S0d! Where is the ddress chrcter, XS is the extended commnd nd S0 (number 0) is the Sutron extended commnd, d is the level to set with it s polrity (+ or -) For exmple: 0XS ! Will set the level to NOTE: A subsequent commnd will disply the internl offset nd not necessrily the user entered level. 16

21 Setting the Level Using Disply Button (Version 1.2 onwrds) Note: This feture is not vilble in version 1.0 nd 1.1 Before you cn use this feture in version 1.2 nd lter, it must be enbled. Refer to the description for SDI commnd XFS1! ( XFS0! to disble ) on how to enble it. The version number is displyed t power-up on the 2 nd line of encoders running versions 1.2 nd lter. Invoking Set-Level Mode: Press nd hold the Disply button until you see SetLevel on the 2 nd line of disply. Relesing the button while SetLevel is displyed switches the disply nd button controls from norml mode to level setting mode. While in level setting mode, the cursor blinks on every chrcter from left to right nd the vlue of the chrcter on cursor chnges on every press of button or every hlf second if your press nd hold down the button. If there is no button ctivity for 4 seconds, the cursor shifts to next chrcter on the right. Entering Desired New Vlue: Enter the new vlue of level s the cursor goes from the 1 st to 8 th chrcter on Line 1 of the Disply. The level must be entered in terms of the current mesurement units (i.e. if the encoder is t the fctory defult of 1 foot wheel, then the number entered is in terms of feet). When the cursor times-out on the 8 th chrcter, the 2 nd line on the disply will chnge to Sve Y. Press nd relese the button when the cursor is blinking on Y to progrm this new vlue. If you do not wnt to progrm this new vlue, let the cursor time-out. In either cse, level setting mode is exited nd the disply nd button controls return to norml mode. NOTE: The proper wheel circumference (XWC commnd) nd direction of rottion (XDR commnd) must be set before setting the level. Setting the Averging Time You cn get Averge, Mximum nd Minimum level over the certin number of seconds clled here s Averging time. This Averging time is user selectble (minimum 1 second nd mximum 254 seconds). The fctory defult is 10 seconds. The form of this commnd is: XT+n! Where is the ddress chrcter, XT is the extended commnd to set verging time, n is the number of 1 second smples to verge. A subsequent Commnd will disply the verging time set. For Exmple, 0XT+20! Will set the verging time to 20 seconds for shft encoder t ddress 0. After this, whenever M4, C4, MC4 or CC4 commnd is issued, the shft encoder will tke 20 redings of level t 1 second intervl nd will return the verge, mximum nd minimum level over these 20 seconds. Reset the encoder to Fctory Defult Configurtion The shft encoder supports reset to fctory defult commnd. The reset to fctory defults commnd provides mens to reset most user configurble prmeters in unit bck to the fctory defults. If the previous history of unit is not known, it is recommended tht this commnd be issued before configuring the unit to ensure known strting configurtion. Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

22 XFD! Where is the ddress chrcter, XFD is the extended commnd to reset the unit to the fctory defult configurtion. Note: The ddress is not chnged. Note: It is recommended tht the unit be powered down nd bck up fter issuing this commnd. A reset to fctory defults resets: Operting Mode: Automtic RS-232 mode enbled Wheel Circumference: 1.0 Number of Deciml plces in Result: 3 Shft direction: Clockwise s positive. Mximum Rottion speed: 2.5 Revolutions per Second Slope for M1 commnd: Items tht re not reset: Address Level Offset Averging time Chnging the slope for M1 redings If there is need for the unit to report level in different engineering unit thn wht is displyed (I.E. disply inches, but log in centimeters), then the M1! commnd cn be used. The XUP! Commnd will set the units to be reported bck s follows: M1 reding = Number of rottions x M1_slope The M1_slope cn be set using the form of the commnd s: XUP+n! is the ddress chrcter, XUP is extended commnd to set M1_slope, n is the new M1_slope. 18

23 6. Field Instlltion Instlling the Bttery The Shft encoder uses single AA size lithium bttery for system power supply bckup. A 3.6V lithium bttery is included, but 1.5V lithium bttery will work. Alkline btteries re not recommended due to their limited cpcity t colder tempertures. The bttery should not be instlled during storge, s it is lwys on when instlled. The bttery is instlled s follows: 1. Remove the bttery cover by turning it one-hlf turn counterclockwise. 2. Instll the bttery with the positive (+) side fcing the cover. NOTE: '+' polrity on bttery nd cover. 3. Plce the bttery cover bck onto bttery holder by turning it one-hlf turn clockwise. Leveling the shft encoder Secure the encoder to level pltform with either three wood screws or the pproprite bolts, nuts, nd lock wshers. Three #10-32 mounting holes re provided for mounting feet or bolts, if dditionl leveling is required. Instlling the flot wheel Mount the wheel on the shft nd secure it by tightening the Allen screw(s) on the wheel. Attch the flot nd counter weight to the tpe per the instructions provided. Set both the flot nd counter weight into the stilling well nd mount the tpe onto the wheel. Wiring the shft encoder to the dt logger Wire the shft encoder to the dt logger using either SDI-12, RS-232 or RS-485 s described in CHAPTER 3. The chssis of the shft encoder is electriclly isolted from the ground of the SDI bus. This prevents differences in ground potentil over long distnce cble runs from interfering with the trnsmitted dt. If dditionl grounding is needed, 12 to 16-wg ground cble my be ttched from the grounding bolt (using supplied wing nut nd wshers) to good erth ground. Checking the direction of rottion Rotte the shft to see if the direction of rottion is set properly (I.E. when flot rises, level increses). If the level does not chnge s desired, either turn the tpe round (put the flot on the other side of the wheel) or use the XDR commnd to chnge the direction of rottion (see pge 16). Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

24 Checking the flot wheel size If the wheel size hs not been set, set the wheel circumference using the XWC commnd (see pge 15). The defult vlue is (1 foot wheel with 3 right digits of precision). Other common vlues for the wheel circumference setting re: 12 - For 1 foot wheel reding in units of inches For 375 mm wheel For 1 foot wheel with the disply/reding in cm The shft encoder tkes on whtever units re used when entering the wheel circumference. NOTE: If this setting is chnged, the number of deciml plces to disply should lso be set (if omitted the defult is 0 digits fter the deciml point). Setting the level Once the unit is secured, nd ll of the prmeters re configured, the level must be set. The level must be entered in terms of the current mesurement units (I.E. If the encoder is t the fctory defult of 1 foot wheel, then the number entered is in terms of feet). Setting Level using SDI Commnd The level is set using one of the two commnds below. XSd! or S0d! Where is the ddress chrcter, XS is the extended commnd nd S0 (number 0) is the Sutron extended commnd, d is the level to set with it s polrity (+ or -) For exmple: 0XS ! Will set the level to NOTE: A subsequent commnd will disply the internl offset nd not necessrily the user entered level. Setting the Level Using Disply Button (Version 1.2 onwrds) Note: This feture is not vilble in version 1.0 nd 1.1 Before you cn use this feture in version 1.2 nd lter, it should be in enbled stte. Refer description for SDI commnd XFS1! on how to enble it ( XFS0! to disble ). Version number is displyed t powerup on 2 nd line of encoders running versions 1.2 nd lter. Invoking Set-Level Mode: Press nd hold the Disply button until you see SetLevel on the 2 nd line of disply. Relesing the button while SetLevel is being displyed switches disply nd button controls from norml mode to level setting mode. While in level setting mode, cursor blinks on every chrcter from left to right nd the vlue of chrcter on cursor chnges on every press of button or every hlf second if your press nd hold down the button. If there is no button ctivity for 4 seconds, the cursor shifts to next chrcter on the right. Entering Desired New Vlue: Enter the new vlue of level s cursor goes from 1 st to 8 th chrcter on Line 1 of Disply. When cursor times-out on 8 th chrcter, the 2 nd line on the disply will chnge to Sve Y. Press nd relese the button when cursor is blinking on Y to progrm this new vlue. If you do not wnt to progrm this new vlue, let cursor time-out. In either cse, level setting mode is exited nd the disply nd button controls return to norml mode. 20

25 Before leving the instlltion site Check tht the logger is progrmmed to tke redings from the shft encoder with the proper mesurement commnd (Typiclly M or C.). Then try to obtin live redings from the shft encoder to ensure proper communiction between the two units. Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

26 7. Troubleshooting nd Mintennce Troubleshooting The following checklist will help in troubleshooting problems: Problem Possible Cuse Corrective Mesure No disply No Dt Grbled Dt Disply timed out Contrst djustment No contrst voltge No Power Wrong ddress requested Wrong ddress set in sensor Alphbets in commnd re in wrong cse Fulty Wiring Multiple Sensors set to sme ddress Wild Crd ddress my hve been used Press & Relese the disply key. The disply will time out 5 minutes fter the key is pressed. Press nd hold the disply key down. You should see the bcklight turning on/off fter 1 second, nd 3-7 seconds fter this, the contrst repetedly vrying from light to drk to light. Relese the key when you find the contrst to be fine. Red Contrst voltge, it should be between -2.0 nd 1.0 volts. If not, then try djusting contrst. Check fuse in the dt recorder nd power t sensor. No customer replceble fuse is instlled in the sensor itself. Mke sure the Dt recorder is set up to request dt t the proper ddress. Use the identify commnd (0I! if sensor s ddress is 0) to mke sure the sensor is responding to the proper ddress. If not, then double-check the internl ddress. For this, remove, ll other sensors, issue the?! commnd nd mke sure tht response mtches with the ddress t which dt is requested. All shft encoder commnds re in uppercse. Mke sure tht none of the commnds re in lowercse. Check ll wiring nd termintions. Try communiction using other interfces. The shft encoder supports SDI-12, RS-485 nd RS-232 interfces. If problem is with RS-232 interfce only, mke sure tht Trnsmit Dt nd Receive Dt re not reversed. With RS-485, mke sure tht the dt lines re not reversed. Check ddress settings of ll SDI sensors. Remove ll other sensors from the recorder nd dd them one t time. Communiction is defined to be 1200 Bud, Even Prity, 7 Dt bits, 1 stop bit. Remove ll other sensors from the recorder nd try gin. 22

27 Erroneous Level Reporting Erroneous M1 reporting Erroneous reporting of Averge, Mximum nd Minimum level L ppers on disply S ppers on disply Level never set Level set incorrectly Over-speeding Wrong M1_slope Averging time too short System reset Over-speeding Check if there is letter L displyed on the left bottom corner of LCD disply. If so, then it mens tht the current level hs never been set, or the sensor ws reset fter the level ws set. Use XS! Commnd to see the offset progrmmed in the shft encoder. You my need to vlidte tht. Check if S is displyed in the 3 rd plce of 2 nd line of disply. If so, you my need to increse mximum overspeed using XRS+s! commnd nd then set the level with XS! Commnd. Use XUP! commnd to red the M1_slope set in the shft encoder. Chnge the vlue of the slope if it is incorrect. Increse Averging time using XT+n! commnd. Check bck up bttery. If it ppers fter setting the level, it mens the shft encoder hs been reset. Use the M6 commnd to find out when it ws reset. Increse mximum over-speed using XRS+s! commnd. CAUTION: There re no user-serviced prts or djustments in the shft encoder. If there is problem with the encoder. plese notify Sutron Customer Service t (703) Only fctory-trined personnel with specilized tools cn remove the microprocessor without dmging the unit nd the processor. Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

28 Mintennce The SDI-12 Shft Encoder is designed to operte for extended periods of time with very little or no mintennce required. If site visit is needed for ny reson, it is good ide to perform routine mintennce check of the encoder nd ny other devices which my be in opertion. Some esy to follow guidelines re listed below. 1. Perform visul inspection of the unit. Note ny bnormlities such s externl oxidtion, rust, or ny defects cused by mechnicl filure. 2. Check the wiring to mke sure it is not corroded, fryed, or loose. 3. Rotte the shft nd verify there is no signs of scrping, rubbing, or mislignment of the internl wheel nd externl pulley. If relignment of the pulley is deemed necessry, loosen the pulley to llow movement, relign, nd then retighten the pulley. Also, verify tht flot nd counter weight move freely. 4. Check the internl bttery voltge either through the disply or by using the SDI commnd M5. Voltge Indiction > 3.7 volts Verify tht bttery is ctully instlled. 3.2 to V lithium bttery is instlled 1.8 to 3.2 Either no bttery instlled or 3.6V lithium needs replced. 1.2 to V bttery is instlled < 1.1 volts Bttery needs replced. 5. Depress the red button to illuminte the disply nd then rotte the shft clockwise nd counterclockwise while observing the displyed vlue. Verify the encoder counts up nd down ppropritely. 6. Interrogte the encoder from the dt logger to verify proper communiction. Send severl SDI-12 commnds nd verify tht the encoder responds fvorbly. 7. Check the current level ginst physicl mesurement. Use the Set Level commnd to mke ny djustments necessry. 24

29 8. Specifictions for Shft Encoder Input Voltge Power Consumption Strting Torque 8 to 16 VDC over voltge nd reverse voltge protected < VDC nd 2.5 rev/sec < 0.25 inch-ounce Shft Dimeter Rottion Resolution Counter resolution Reported resolution 5/16 inch with both threds nd flt 400 count per revolution 32 bit User selectble Rnge 7 deciml digits (exmples: ± or ± ) Disply Bckup Bttery Bering Supports Supported Wheels Support Units Rottion Speed 2 line, 8 chrcter per line with bcklight AA size, 1.5V or 3.6V ccepted Double bering rrngement supports up to 10 lb. shft lod User specifies wheel size - no required circumference User specified User specified - fctory defult 2.5 rev/s Mximum Rottion Speed Temperture Rnge Communiction Interfces SDI-12 Support 5.5 rev/s -40ºC to +60ºC (Disply viewble -20ºC to +60ºC) SDI-12, RS-232, SDI-12 protocol over RS-485 (on -DT unit) V1.3 - will work with V1.0, V1.1, V1.2, nd V1.3 dt loggers Ordering Informtion Prt Number DT DM Description SDI 12 Shft Encoder, 400 count resolution with disply nd terminl strip. Supports RS-232, SDI-12, SDI-12 over RS-485. SDI 12 Shft Encoder, 400 count resolution with disply nd MS connector. Supports RS-232 nd SDI-12. Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

30 Appendix A -- Commnd Reference This chpter documents the commnds supported by the shft encoder. The commnds re listed in lphbeticl order within section. Shft Encoder Bsic SDI-12 Commnds? Commnd Description Commnd Syntx Acknowledge ctive! Request Address (Also see X? commnd)?! Ab Set SDI-12 ddress Ab! C C1 C2 C3 Request Concurrent Level Mesurement Request Concurrent Level Mesurement Request Concurrent Temperture Mesurement Request Concurrent mesurement of Displycontrst voltge nd internl Bttery voltge C! C1! C2! C3! Shft encoder response (underlined) "" represents the single-chrcter ddress A Where is the ddress of shft encoder A Indicting tht the current ddress is. Note: shft encoder should be the only sensor on the SDI-12 bus when this commnd is given, otherwise this will cuse response from ll SDI devices resulting in communictions collision. b Indicting tht the new ddress is b Indicting tht 2 vlues cn be collected fter 1 second. vs Where v is the signed vlue of instntneous level nd s is sttus of shft: s = 0 Oky s = 64 Level hs never been Set s = 128 Over-speed s = 192 Level hs never been set nd Over-speed Indicting tht 1 vlue cn be collected fter 1 second. p Where p is the number of turns * user set slope (See XUP commnd to set slope) Indicting tht 2 vlues cn be collected fter 1 second. tu Where t is the temperture in Celsius nd u is 0 (indicting it s Celsius vlue) Indicting tht 2 vlues cn be collected fter 1 second. cb Where c is the signed vlue of contrst voltge pplied to disply, b is internl bttery voltge. Both results re in volts. 26

31 C4 C5 C6 CC CC1 CC2 CC3 CC4 Request Concurrent mesurement of Averge, Mximum nd Minimum level Request Concurrent mesurement of internl Bttery Voltge Request time elpsed since lst system reset Request Concurrent Level Mesurement, with CRC-16 Request Concurrent Level Mesurement with CRC-16 Request Concurrent Temperture Mesurement, with CRC-16 Request Concurrent mesurement of Displycontrst voltge nd internl Bttery voltge, with CRC-16 Request Concurrent mesurement of Averge, Mximum nd Minimum level, with CRC-16 C4! C5! C6! CC! CC1! CC2! CC3! CC4! ttt03 Indicting tht 3 vlues cn be collected fter ttt(averging time + 1) seconds. xyz Where x is the verge level, y is the mximum nd z is the minimum level over the pst verging time Indicting tht 1 vlue cn be collected fter 1 second. b Where b is the bttery voltge in volts Indicting tht 3 vlues cn be collected fter 1 second. hms Where h, m nd s re hours, minute nd seconds, respectively Indicting tht 2 vlues cn be collected fter 1 second. vsc Where v is the signed vlue of instntneous level, s is sttus of shft: s = 0 Oky s = 64 Level hs never been Set s = 128 Over-speed s = 192 Level hs never been set nd Over-speed, C is the 3 chrcter CRC Indicting tht 1 vlue cn be collected fter 1 second. pc Where p is the number of turns * user set slope, nd C is the 3 chrcter CRC (See XUP commnd to set slope) Indicting tht 2 vlues cn be collected fter 1 second. tuc Where t is the temperture in Celsius, u is 0 (indicting it s Celsius vlue), nd C is the 3 chrcter CRC Indicting tht 2 vlues cn be collected fter 1 second. cbc Where c is the signed vlue of contrst voltge pplied to disply, b is internl bttery voltge, nd C is the 3 chrcter CRC. Both results re in volts. ttt03 Indicting tht 3 vlues cn be collected fter ttt(averging time + 1) seconds. xyzc Where x is the verge level, y is the mximum level, z is the minimum level over the pst verging time, nd C is the 3 chrcter CRC. Bringing the Benefits of Rel-Time Dt Collection to the World Sutron Corportion, Ridgetop Circle, Sterling, Virgini

32 CC5 CC6 Request Concurrent mesurement of internl Bttery Voltge, with CRC-16 Request time elpsed since lst system reset, with CRC-16 CC5! CC6! Indicting tht 1 vlue cn be collected fter 1 second. bc Where b is the bttery voltge in volts, nd C is the 3 chrcter CRC Indicting tht 3 vlues cn be collected fter 1 second. hmsc Where h, m nd s re hours, minute nd seconds, respectively; nd C is the 3 chrcter CRC. v v contins the previously-requested mesurement vlues. D0 Request Dt (NOTE: This commnd is only issued fter mesurement commnd. It should not be issued until the mesurement time hs expired or service request hs been received) Exmple: If the bove exmple ws received nd the previous mesurement commnd ws n M, it would indicte tht the wter level is t feet, nd 1 mens there is no shft error. NOTE: If the ddress is returned with no dt vlues, this indictes tht there is no dt vilble. Either mesurement commnd ws not issued, or the commnd ws borted by sending new commnd before the mesurement time expired, or service request ws received. 13 SUTRON sssssssSvvv I Send Identifiction I! 13 supports SDI version 1.3 commnds SUTRON mnufcturer model number 1.0 hrdwre revision level sssssss the sensor seril number Svvv the softwre revision 0012 Indicting tht 2 vlues cn be collected fter 1 second. M Request Level Mesurement M! After the mesurement is complete nd before 1 second, Shft encoder sends service request Where is the ddress of shft encoder. vs Where v is the signed vlue of instntneous level nd s is sttus of shft: s = 0 Oky s = 64 Level hs never been Set s = 128 Over-speed s = 192 Level hs never been set nd Over-speed 28