eiRMU-08 User Manual
Contents
1. Contents ETT el pele ala TTT 2 TSC MMe pever dis 3 F nc onal Diag vl TTT 3 CD COT ON acc E E E FA WT FE RA HR Y NN YR RWYF FFR FE 4 Some Terminology Definitions e uuu i eee A eee 4 Sxs1vd a Mb u n oe FYRR EE E FFR EYN YR HT FFAN EYN YNFYD FFF FYN FYNYD DAR 5 BED CC Fa je FFA Y FFF FFYN NAF EFFRO R FON FD YN NN FY NT FYN 5 PU CS LED CO 21 TIO O C2 EY IF IR RT ER YO Y Y IR HC HC YR RF THAN 6 III Cle UNIE R A A NAF NO FYNEDFA NF FE 7 Setting the Address Communications Speed and Protocol sss sse eee eee 8 Configuring the Analogue Inputs sss sees eee eee eee ee eee eee 9 Inpuc CONMECTION E kn pl S TT 11 Tie MO ied yT A ei I ER RAN RY EN NEWN RA 12 TOdo Be dn UC CODI UO ee DDI UY DN OO Gyn 12 Setting Nne standard A eu MM SE _ _ I HE RR FN RF CT FN RA YH 13 Hou dea Re Te a FF THRA URC FF NHY EF FN 14 ru LL fs CUMING RR rex4 W I TY FRO RNA 15 WS We eT efi er UI 5 ER _ HT HN Hn 17 WAL COS Fel a uy CR GU iD CYD USES Yi COG GU FU 18 Modbus Testing Software sese ee eee eee 19 RS485 Termination and Cable Screen Connection ee eee eee eee eee eee 19 Installing and Using the USB Interface cccccssecccsseceaececenceeeeceeenecceeececeneeeaenceseneeteneceseucessgeseeeness 19 PG SSC TC AUN Y RUT UTHR RW 20 General RMF COMMUNICATION FORMAT T 20 Read and Write Re2. 15 May 2014 Page 25 of 28 Mechanical Details Product dimensions 21 0 x 11 0 x 6 0 cm length x width x height off DIN rail including connectors weight 0 41 kg Multi strand wire connections cross sectional area 2 5mm Packaged size 43 5 x 33 x 27 5 cm length x width x height weight 0 6 kg Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 9danntech process INSTRUMENTATION Page 26 of 28 Specifications Eight analogue inputs Communications protocols Modbus RTU and Danntech RMF Isolation gt 500 VDC between each Input Main Processor Communications Power In A Power In B Watchdog Relay Output Counter Input Inputs 0 30 mV 0 60 mV 0 60 V 4 20 mA Link Jumper and mini DIP switch selectable each input can be different 12 bit analogue input resolution accuracy better than 0 25 of the range General analogue response time fastest at less than 0 1 seconds Bi colour LED indication of each input status with configurable indication values Input calibration using switches and push button to capture input values for zero and full scale Standard Input Value settings using switches and push button to capture input values for minimum and maximum Individual instrument earthing selectable using links jumpers for each input and the RS485 communications Communications isolated RS485 Modbus at speed 9 600 bps and 19 200 bps Isolated USB interface Address and communications s
3. Read and Write Counter Mode which is set on power up Read and Write Counter Mode Power up Value Des O to 65535 which represents the time 100 mSecs over which the counts are accumulated in the freguency mode Read and Write Counter Timebase Value LA U to 65535 Counter Timebase which is set on power up Read and Write Counter Timebase 0 to 65535 Power up Value Setting of the DIP switch on the top PCB Sets communication speed baudrate and device address DIP switch 1 r 2 setting in binary Ps Read Only Used to switch between RMF and Modbus Communication Protocol DIP switch 2 Oto255 setting in binary Read Only Device Type Oto 65535 Read Only Danntech allocated device type W N N N N N e danntech process INSTRUMENTATION Page 22 of 28 Firmware version 100 e g version 40031 Firmware Version 0 to 65535 Read Only V1 23 returns a value of 123 Six digit serial number should correspond to the serial number affixed to the device 40032 Serial Number O to 65535 Read Only will be 0 if serial number has been 40033 set otherwise 65535 Serial Number Flag O or 65535 Read Only Can be used to enable or disable the front panel LEDs High byte for Green LEDs low byte for Red LEDs OxFFF all on 0x000 all off OxFFOO All reds off green on Read and Write SS 40034 LED Mask U to 65535 j Approximate time since the last R
4. 0 0175 30 0 0596 In reality we would expect the accuracy measured to worse than this and probably find it to be about double that calculated due to noise measurement errors temperature effects etc IN N SCREEN INPUT 1 INPUT 4 INPUT 5 N INPUT 8 INPUT 2 INPUT 3 INPUT 6 INPUT 7 Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 9 of 28 It is best to do Re Calibration when the unit is at operating temperature at the place where it will be used Good quality instruments Voltage Current Source and DVMs are also required to produce the best results We will cover the Analogue Input Configuration in reverse order since doing the option 4 Change the Input Configuration requires all four steps to be carried out doing option 3 Re Range or Re Calibrate the input range requires steps 1 2 and 3 to be carried out and doing option 2 Use in the same input configuration but change the SIVs requires steps 1 and 2 to be done Bi Colour DIP Switches Push Button Switches Bi Colour DIP Switches Push Button Switches LEDs Instrument Earth Links Instrument Earth Links Bi Colour Bi Colour LEDs DIP Switches Push Button Switches LEDs DIP Switches Push Button Switches w4 e 1 L j AL SL T 7 TTT d E dewi 1111111 d u T s m Ji ALLU HWN FH HT Eg Pc we FESS L AAA mi a K 4 4 1 gt 1 4 rt gt
5. 28 USB Specification Drivers for Windows 8 32 64 Windows 7 32 64 Vista 32 64 XP 32 64 Server 2003 8R2 32 64 2000 ME 98Se Mac 8 9 X Linux WHOL compliant COM drivers included Galvanically isolated from all power supplies inputs and outputs Powered by the eiRMU 08 FTDI232 USB chip UART I F Supports 7 8 Bit Data 1 2 Stop Bits and Odd Even Mark Space No Parity USB Plug and Play with Windows 7 and 8 USB 1 1 and USB 2 0 compatible Typical communications speed maximum 115 2Kbps at 1 000m Up to 32 nodes in network configuration FFWEFFEFFF F Latest drivers and software are included on the CD or the very latest are available at http www ftdichip com Drivers VCP htm http www ftdichip com Support Documents InstallGuides htm http www ftdichip com Support F TDocuments htm General RMF Communication Format When communicating using the RMF commands the following format must be observed address command register data checksum where this character must be transmitted to signal the start of the command sequence address the address as set by SW1 3 SW1 8 0 to 63 Note that for the modbus operation these additional commands have been mapped into other registers Read Configuration Registers 1000 command the command 0 to 127 register the register number as applicable to the respective command data the data as applicable to the respective command checksum the checksum
6. Lm biai Lm Relay Output for Loop Isolategi DC t y DC to DC lt s Powered oc hech Converters Sensors I v Input Signal 721 Controller r Input Conditioning Galvanic y Isolation I e 5 Push DIP Switches Yy mm Rx L 2 Fy I i w me me b he S S nr S S S bn S hh LEDs ed Koni Ld Tx y E X T S ub ee S S S S hb ed S S S S S bn POWER t i Power 15VDC for Loop Isolated DC to t Powered DC Cohverter Sensors S Input Signal s Controller Input Conditioning Galvanic i Isolation N 1 4 amp Push I 7 i a N DIP Switches jn AA Main Configuration i M iCro LEDs Controller 224 M422 DIP Switches Counter Input n E S nm S S S S bm S S S a ee ee M t 5 Power 415VDC Loop Isolated DC to Powered i E OC Converter Sensors 2 Micro Input Signal a Controller Input Conditioning Galvanic i Dicit Isolation I naid mams PUSR v F F i DIP Switches ore i Y MA t LEDs e m n m m m m m m m m m m m m 7 Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 3 of 28 COMMS FAIL Input Status LEDs E Y AA AAi AAS mc nU AA CD Contents On the CD included with each batch delivery you will find the following folders containing the relevant information ModbusMAT RMF Utility usb info L E E L user manual Some Terminology Definitions Input PCB Bottom printed circui
7. input value has been captured then the green LED will flash slowly again 4 You can repeat steps 2 and 3 any number of times and when you are done switch DIP switch 8 off This completes the Input Calibration and any input value is now scaled from O to 4095 from the Input Minimum Calibration Value to the Input Maximum Calibration Value i e When the Input Minimum Calibration Value data read from register O When the Input Maximum Calibration Value data read from register 4095 When the Input Max Cal Value Min Cal Value 2 data read from register 2047 Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 12 of 28 Setting the Standard Input Value This assumes you have opened the unit have the input Configured as you wish have powered up done the Input Calibration if required and you have an accurate voltage mV or current source available to use as an input 1 Set DIP switch 7 on switch 8 must be off the LED will flash green slowly 2 Inject the Standard Input Minimum Value when stable press and hold the Push Button until the LED flashes red briefly and then release the Push Button the green LED with stay on for a second or so indicating that the input value has been captured then the green LED will flash slightly faster 5 Now inject the Standard Input Maximum Value when stable press and hold the Push Button until the LED flashes red briefly and t
8. is the sum of all the values excluding the start character modulo 219 Note that the checksum is a 16 bit number which wraps around through zero should the sum exceed 65535 i e if the sum of the data from the address through to data is 65537 then the checksum should be sent as 1 All values are 16 bit except for the address and command and have a range of 0 to 65535 Upon receipt of any command between i e checksum matches and command is recognized the device will reply with a copy of the original command with the command value increased by 128 i e the most significant bit is set data is the reguested data The checksum is also updated to reflect the changes Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 20 of 28 Read and Write Registers RMF and Modbus Read and Write Registers RMF and Modbus V1 20 Allows writing to the all the 2 read register 3 write register output registers Modbus Modbus RMF Read Write Register Reg Reg Address 40001 40009 Filename eiRMU 08 User Manual docx Version 1 01 Address LA LA LA a gt L LA Ui LA LA LA dJanntech PROCESS INSTRUMENTATION Description Analogue Input 1 Analogue Input 2 Analogue Input 3 Analogue Input 4 Analogue Input 5 Analogue Input 6 Analogue Input 7 Analogue Input 8 Analogue Input 1 Status Analogue Input 2 Status Analogue Input 3
9. means your address baudrate protocol etc are correct if not then there is something set up incorrectly The COMMS FAIL LED illuminates red when the data transmission watchdog has timed out and the watchdog relay is open This timeout time can be adjusted from 1 to 15 seconds see the relevant section Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 5 of 28 Input Status LED Operation The idea behind the operation of the Input Status LEDs is that when the inputs are all within the normal operating range each one will show solid green Any red or red flashing indicates that the particular input is outside of its expected normal operating range Below the Calibration Minimum and above the Calibration Maximum RED on solid Below the SIV minimum and above Calibration Minimum RED flashes slowly Above the SIV maximum and below Calibration Maximum RED flashes fast Between SIV minimum and SIV maximum GREEN on solid The input not set up in RUN Mode set by bottom PCB DIP switches it is either in Calibration SIV capture or Raw Data modes GREEN flashing For normal operation the GREEN LED must NOT be flashing RED and GREEN flashing alternately this means there is an internal communications fault with the particular input circuitry this is not good and indicates a problem Standard Input Calibrat Standard Input ai alibration i Cali
10. 60 V 0 60 mV pola fa 0 30 mV pi fo 2 4 20 mA Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 9danntech process INSTRUMENTATION Page 24 of 28 Delivery Configuration Delivery Configuration V1 2 Input 1 Input 2 Input 3 0 60 VDC 0 30mV 0 30 mV Calibration Minimum Calibration Maximum SIV Minimum SIV Maximum SIV 5 0 5 0 5 0 Typical Test Results Test Results eiRMU 08 Date 14 May 2014 Input EA Units Mie va tv ma Delivery Configuration 0 60V Cal Max c s Std Max ae lt s S ll II dd 39 2 ir Reg 1 Reg 2 ae eT 0 02 0 00 00 Input V 0 00 Input Units E C al 0 60V 55 2 Std Min Regs Error Hina sets ene Input V Reg 5 mV En 6 as gone ox EE 001 45 EN Filename eiRMU 08 User Manual docx Version 1 01 dJanntech PROCESS INSTRUMENTATION _ configuration 0 30mV S 30 fferm 0 Je Pe sy CIE 0 30mV Input 4 Input 5 Input 6 Input 7 Input 8 0 60mV O0 60VDC 0 30mV 0 30 mV 0 60 mV 5 0 5 0 5 0 5 0 5 0 Eight Analogue Input Remote Measurement Unit Tested By MD Serial R 127038 input eza perre uate J N3 IA2 mv m4 tas mw configuration 0 30m Delivery Configuration 0 60mV Output Input Output ir E Units lt a I 0 30mV Ie 0 60mV awe o wer oo cawr o EP rs mV Reg7 mV Reg 8 o o o Too eo am oos
11. May 2014 Version 1 01 danntech process INSTRUMENTATION Page 13 of 28 Input Mode Selection Mode Selection Run Mode Calibration Mode Standard Input Value Capture Mode Raw Data Mode Filename eiRMU 08 User Manual docx srd Version 1 01 dJanntech process INSTRUMENTATION Green LED on if input value gt Low Input Value and lt High Input Value Otherwise Red LED on or flashing To setup and capture input minimum and maximum for input scaling Green LED flashes Red LED off To setup Standard Input Minimum Value and Standard Input Maximum Value Green LED flashes Red LED off Input sends the raw input data not scaled values Used for diagnostics Green LED flashes Red LED off Normal operating mode Inject minimum input value then press and hold down push button switch until value is captured then inject maximum calibration value and press and hold down push button switch until value is captured When the value is captured the red LED flashes briefly and the green LED goes on for 2 seconds Release the push button switch as soon as the red LED flashes Inject the Standard Input Minimum Value then press and hold down push button switch until value is captured then inject Standard Inout Maximum Value and press and hold down push button switch until value is captured When the value is captured the red LED flashes briefly and the green LED goes on for 2 seconds Rel
12. ON Page 15 of 28 1 uc jw S N a LL ISI We mn A a SW A at A oea C y era a gt ait t Instrument Earth Links T CR SE HDA Bl w el AL IA dd e 6 ag t S T m l s E i i l x r 1 d A TELET I d a L ha E 4 Lipa aarti ka e 49 Aj WR LLU 1 L TITW W O WD H 2 L OYT ai 7 wo amp 1 9 J J3 s ei L L L sae Y 9 c i j i Instrument Earth Links Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 16 of 28 Using the Counter Input The counter input provides a way of wv I R 9 xal her Y counting pulses measuring the Link N for 5V R2 21 frequency or period of a digital signal hput ea 470R ES1 The counter mode register sets up how J1 the counter will work the counter C4 Dir 4 r timebase register is used for frequency ov ww 16 ES1 measurements and the counter value U1 register gives the moral N count freguency period value see the 5 LA section Read and Write Registers RMF COUNTER INPUT and Modbus 4 HCPLO600 2 Way RA Hdr The maximum input freguency is 100 kHz A link jumper is used to facilitate inputs from 3 to 12 V and 10 to 30 V With the jumper J1 out the input is used for 10 to 30 V inputs and with J1 in 3 to 12 V inputs COUNTER INPUT VOLTAGE SELECT WATCHDOG RELAY LINK JUMPER COUNTER CONNECTIONS IN 3 12V INPUT OUT 10 30V Fil
13. Status Analogue Input 4 Status Analogue Input 5 Status Analogue Input 6 Status Analogue Input 7 Status Range O to 4095 O to 4095 O to 4095 O to 4095 O to 4095 O to 4095 O to 4095 O to 4095 Oto255 O to 255 Oto 255 Oto 255 Oto255 Oto255 Oto 255 Register Type Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read Only Read Only Allows access to the all the input and current output values and the DIP switch settings Value of analogue input O minimum calibrated value 4095 maximum calibrated value e g O 0 VDC in 4095 60 VDC in ditto ditto ditto ditto ditto ditto ditto Made up of four bits 8 through 5 of input firmware DIP switch configuration plus input state bits 1 through 4 have binary value O Input gt LIV and lt HIV 1 Calibrate Mode 2 Standard Input Value Mode 3 Input lt LIV or gt HIV 4 Input is below lowest allowable value or above highest allowable value These values are set in the firmware 5 Input LED functions disabled ditto ditto ditto ditto ditto ditto 15 May 2014 Page 21 of 28 Analogue Input 8 Status 40017 60017 Counter Value 0 to 65535 40018 60018 40019 60019 Counter Mode O to 65535 40020 60020 40021 60021 40022 60022 40023 40024 40030 Filenam
14. ally in the original application of DC battery bank monitoring ina telecom system where the inputs are a combination of mV current shunt inputs measuring battery currents and DC voltage measuring battery voltage Telecom systems work with a so called 48 V power supply where the ve battery connection is grounded the historical reason being to reduce corrosion in the thin telecom wiring The most obvious unique features of the eiRMU 08 are Isolation each analogue input is individually isolated from each other and from the power supplies and the communications gt 500 VDC This means thirteen way isolation in the adspeak of analogue input modules almost all others offer three way isolation at most and Earthing the eiRMU 08 has very flexible screening and signal grounding options allowing you to make the most accurate mV measurements in electrically noisy environments We have included a screen connection for each input as well as a proper instrument grounding facility 4 Input Levels A very quick and easy way to see that all inputs are within the expected values green red flashing or red LEDs provide a fast way to diagnose fault status conditions on each input Watchdog seperate hardware communications monitoring to ensure that each unit sends a response with a relay output to warn of communications failure very useful for systems that need to run reliably and continously Dual Power Supply wide range i
15. bration Minimum eeiam Maximum Minimum lt 4 Input within Standard Operating Range Raw A D Converter Measurement Values Red LED Red LED Green LED On Red LED On Flashing Slowly Green will flash if in any mode other than RUN Mode Flashing Fast D h h a l ltd Analogue Input Register Values 0 4095 Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 6 of 28 Opening the Unit It is not possible to open the unit while fitted to a DIN rail so it is necessary to unplug all the connections remove from the DIN rail and then open the unit In a way this is a good feature as it makes unauthorized tampering quite difficult and not obvious During an installation we recommend fitting the units to the DIN rail connecting everything up with the cover removed When everything is working correctly and you are done then you can replace all the covers The covers can be fitted while the unit is mounted on the DIN rail Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 7 of 28 Setting the Address Communications Speed and Protocol This is done using SW1 and SW2 on Top PCB DIP Switch 1 DIP Switch 2 the top PCB which can be accessed after removing the cover The unit is delivered with addresses Gy starting at 1 depending upon the i 2 BING TR number ordered they are delivered T er ek 7 in sequence co
16. c a HF S gm cd SAN L Pae ga L B 0 ic lt prz A Instrument Earth Links Instrument Earth Links The following table shows the links jumper settings for the various inputs Input Configuration SW1 SW2 SW3 SW4 SW5 SW6 ofofo o tofo E 0 0 4 20 mA loop powered by eiRMU 08 Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 10 of 28 Input Connection Examples 0 60 VDC input with screen connected to Instrument Earth 0 60 VDC input with screen connected to Input OV 123 leave screen ha floating un connected r 58K floating un connected at battery connection 5 d at battery connection 455 Mia are tor each input when delrvered Cable screen Cable screen connected connected to instrument to instrument earth chassis mn oo DN earth chassis Circuitry KD _ Circuitry Current Shunt Cable screen Cable screen connected connected to instrument to input OV earth chassis Circuitry 1 Circuitry Loop powered 4 20 mA input with screen connected to 4 20 mA input with screen connected to Instrument Earth Instrument Earth 23 Transmitter Power leave screen foaltingiun connectod at shunt end leave screen floating un connmected al shunt end Self Powered Transmitter AS 2 Loop Powened 7 Transmitter For aadh FOE Cable screen installed connected Cable screen installed to instrumen
17. e eiRMU 08 User Manual docx 15 May 2014 Version 1 01 40016 Oto 255 Read Only ditto Read and Counter value Write When the counter overflows this register increments When this register is read it clears the overflow flag and thus when the normal timer is read register 17 the current hardware counter is returned total count is thus overflow 65535 counter value If the counter has overflowed and register 17 is read before the overflow register is read then the value returned is just 65535 indicating the overflow This register doesn t affect the operation of the counter in any way it just adds a little more information about the overflow Note that it follows the same mode conventions as the counter i e mode 0 it simply accumulates mode 1 it clears after every read mode 2 the frequency counter mode doesn t apply The operation of the modes 0 simple count mode number of pulses received which stays at 65535 if the counter overflows Can be cleared or preset by writing a value to the counter value register 1 count mode with clear on read number of pulses received which stays at 65535 if the counter overflows Is cleared when the counter is read Can be cleared or preset by writing a value to the counter value register 2 frequency mode the counter value is updated every n x 100 mSecs Where n is the value set by register 21 Read and Write Counter Overflow LA CO 0 to 65535 Register
18. ease the push button switch as soon as the red LED flashes Values in the device registers are not scaled by calibration values The raw A to D values are sent from the input to the analogue input registers 15 May 2014 Page 14 of 28 Earthing Screening Significant attention has been paid to the design of the eiRMU 08 with regard to input screening and instrument earthing When dealing with mV inputs in an industrial environment where you really require measurement resolutions of better than 100uV some care needs to be taken as well as the option of various earthing grounding regimes to suit each particular environment There are some basics to be observed with instrument earthing grounding however in many cases it is dependent upon the particular installation and flexibility is always good So we have designed the eiRMU 08 to accommodate screened cables on all analogue inputs which can either be connected to the particular analogue input OV or to the Instrument Earth Often one will try either option to see which results in the least measurement noise the most stable measurement values with a stable input K 15V Supply 1 23 l SIN 3 SCREEN Instrument Earth Links are installed for each input when delivered GND Chassis a rn nol l installed Input Circuitry 0V Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATI
19. ename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 17 of 28 Watchdog Relay Output The watchdog is a hardware circuit which uses the transmit signal from the eiRMU 08 to keep a capacitor charged When the capacitor discharges below a certain level because there has been no CN13 RLIA 1 sre LNU 1 COMS FAIL oo transmission from the unit then the Watchdog 3 Way RA Hdr i i i thata _ SAW RL1 Th h relay is Be HED opened The EE is thata RZ 2CO 24VDC separate circuit is used to keep a reliable check that the eiRMU 08 is polled and responds within a certain time this time can be adjusted from about RL1C 1 to 15 seconds using VR1 It is a crude but reliable way to provide a healthy relay output when all is working correctly _ i Kd _ pe a ur L gZ L E Fully Anti Clockwise timeout 1 sec Mid Point timeout 7 sec Fully Clockwise timeout 14 sec Filename eiRMU 08 User Manual docx Version 1 01 15 May 2014 dJanntech PROCESS INSTRUMENTATION Page 18 of 28 Modbus Testing Software Modbus testing software is available from the following sources SimplyModBus www simplymodbus ca US 60 We prefer to pay for software if possible no doubt it costs to write and maintain ModbusMAT www ataytugal com free RMFUtils a Danntech utility included on the installation CD RS485 Ter
20. gisters RMF and Modbus sss sss sees eee 21 Analogue Input Status Register Details sees eee eee 24 Delivery Cone Ura O esprirnas a EE E EEE 25 FDIC Tec O TTT 25 Mechanical D tails cas ance FYRR YF FFEFRYN AFR REFER YDY FFA NAY FU AFF FNAN ARNYN 26 GRT Or Tee 6 6 Lo SE zM NU YH RH NR NFED NF 27 POETH ge Y yo an OUD Y GORF DDN SE DD Uy UEN 28 Danntech makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Danntech shall not be liable for errors contained herein or for incidental or conseguential damages in connection with the furnishing performance or use of this material This document contains proprietary information which is protected by copyright No part of this document may be photocopied reproduced or translated into another language without the prior written consent of Danntech The information in this document is subject to change without notice Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 1 of 28 General Description This product was designed to provide a cost effective way to add eight individually galvanically isolated analogue inputs to an existing data acquisition system Modbus RTU and Danntech RMF serial protocols are supported with isolated RS485 and USB interfaces The individual input isolation is vital in many applications especi
21. he Standard Input Values SIV For the purposes of clarity we will call Input Configuration as the changing of the links jumpers and DIP switches 1 to 6 to change the input between the five standard configurations available to you Possible Input Configurations for this model are 0 60 VDC 0 30 mVDC 0 60 mVDC 4 20 mA self powered and 4 20 mA loop powered We will call Re Ranging the Re Calibration of an input within the existing Input Configuration For example changing a 0 60 VDC input to be 0 30 VDC in the case say where instead of being 48 V batteries they are 24 V Re Calibration is just updating or redoing an existing calibration In the case where you would like to change a 0 60 VDC input to say 0 74 VDC this has to be done at the factory as the input circuitry is configured for the range as delivered Generally one Re Ranges within the range as delivered but not outside Actually you may have about 10 lee way when going outside and when Re Ranging within the Input Configuration you just sacrifice accuracy Input Accuracy the effects on accuracy can be estimated by assuming about 0 to 4095 12 bit A D converter over the input range plus 20 and then working out the effects on Re Ranging For example the 0 60 VDC has a resolution of approximately 60 V 20 72V 4095 17 5 mV resulting in an accuracy of 0 0175 V 60 V 0 03 so when re ranging to 0 30 VDC this resolution remains meaning that the accuracy will now be
22. hen release the Push Button the green LED with stay on for a second or so indicating that the input value has been captured then the green LED will flash slowly again 6 Youcan repeat steps 2 and 3 any number of times and when you are done switch DIP switch 7 off This completes setting of the Standard Input Values and now both the Input LED on the input PCB and the Input Status LEDs on the front panel will light according to the Input Calibration Values and the Standard Input Values i e Input is either below the Input Minimum Calibration Value or above the Red on Solid Input Maximum Calibration Value Input is above the Input Minimum Calibration Value and below the Red Flashing Slowly aa Standard Input Minimum Value Input is above the Standard Input Minimum Value and below the Green on Solid Standard Input Maximum Value Red Flashing Fast Input iS above the Standard Input Maximum Value and below the Input Minimum Calibration Value Standard Input a Standard Input Minimum Calibration Maximum Maximum Calibration Minimum lt A Input within Standard Operating Range Raw A D Converter Measurement Values 095 R Red LEQ Red LED Green LED On Red LED egg Flashing Slowly Green will flash if in any mode other than RUN Mode Flashing Fast a X90 2096909 0 0 0 0 0 0 0 0 0 0 0 0 0 0 OOS Analogue Input Register Values 0 4095 Filename eiRMU 08 User Manual docx 15
23. mination and Cable Screen Connection The RS485 connection has the facility to connect the cable screen to Instrument Earth if required install link jumper Jx In addition a 2209 termination resistor can be connected if required by installing J x RS485 Cable Screen Instrument Earth Link USB Connector Instrument RS485 RS485 Termination Earth Connection Connector Resistor Link Installing and Using the USB Interface Drivers for our USB interface are available for most gt versions of Windows including Windows 8 and the latest be S yuBe Windows Server version Linux and Android drivers are Al also available Once the drivers have been installed and the converter is connected to your computer s USB port a virtual COM port will be created vun wewansosyy mowag SO Nil 1117 P me For recent windows versions simply plug the USB into your Re computer if you are connected to the internet it should find K S the drivers otherwise use the CD supplied and install the driver for your operating system Roos R 9 38 2 EIS For a more comprehensive installation guide please see the USB installation information on the CD or go to the link http www ftdichip com Support Documents lnstallGuides h tm USB Connection A USB cable will be supplied with each batch of units ordered Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 19 of
24. mmunications speed at 19 2 bps and Modbus protocol as a 7 Me ep hh oe 1 a HE Ua d UMA 2H VE nb J1 KE d 7 7 1 2 eh LLU EL ma T J KE o y Ji A Hi i n N f i KAR 3 a 1 ee l 2 ec Ji ii h i UY bb in gt 2 i mo Ue ese 8 S GD a kv U e LL TL S C 4 E y r wit be a l a 1 x y 4 U L TTT t dL 12 KS l 6 3 tlhe iy z HEESE J2L s E tE paims P Dy te x KE U y Gwe Zac Bottom PCB SW1 DIP Switch Details Selects Communication Speed baudrate 9 600 bps 19 200 bps 57 600 bps 115 200 bps Selects Device Address o o o i 0o e SW2 DIP Switch Details Pi Pe ee tes 0 eT og 1 Selects RMF or Modbus Communications Protocol RMF Modbus not used Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 8 of 28 Configuring the Analogue Inputs Each of the analogue Inputs is separately configured and each or some can be used in the following ways 1 Use exactly as delivered you have ordered the input setup as you require and no adjustments are necessary 2 Usein the same input configuration but change the Standard Input Values for LED indication 3 Use in the same input configuration but Re Range or Re Calibrate the input range Change the Input Configuration to a different type available which will also generally require re calibration and re capturing of t
25. ondition Input operational Modes selected separately for each input using input DIP switches Run normal operating mode Calibration capture of input minimum and maximum SIV Capture capture of Standard Input Value minimum and maximum Raw Data the unscaled A to D input values are used Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 4 of 28 Front Panel Details POWER STATUS A POWER reis So SUPPLY IS SERIALDATA SERIAL DATA intervals when all is good AVAILABLE B POWER RECEIVED TRANSMITTED SUPPLY IS S se data vanernmed AVAILABLE COMMUNICATIONS WATCHDOG HAS TIMED OUT off when comms is good INPUT 1 INPUT 4 INPUT 5 INPUT 8 STATUS INPUT 2 INPUT 3 STATUS status INPUT 6 INPUT 7 STATUS STATUS STATUS STATUS STATUS LED Operation The Power Status LED is flashed slowly to indicate that the unit is overall healthy like a heart beat So when this flashes slowly the main processor is operating correctly The A and B LEDs are illuminated green when the particular power supply is connected and healthy within the range 18 to 72 VDC The communications LEDs Rx yellow flashes when data is received and Tx blue flashes as data is transmitted The idea here is that if you see that data is being received and you are expecting a reply from the device but you are not receiving a reply then you need to observe that Tx LED is flashing If it is that
26. peed DIP switch selectable Plug in screw terminals with each input to include screen RS485 to have screen and input connectors can be keyed so that Analogue inputs cannot be inadvertently mixed and cause damage Two on board power supplies 18V 72V for redundancy purposes A feed and B feed Operating temperature range 10 C to 55 C Test sheet supplied for each unit after burn in with calibration and accuracy information shown for each input Enclosure plastic IP20 DIN rail mounting Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 27 of 28 Part Numbering So far there is only one product in this series eiRMU 08 El 8 Analogue Input RMU with Dual Power Inputs TEPER ER 0 1000009 ldd Tay To get the latest user manual please download from htto danntech com user manuals eiRMU 08 User Manual pdf danntech cc danntech ltd Reg No CK1986 15338 23 Co No 6510211 Tel 27 0 11 792 1239 Tel 44 0 75 9069 1824 Fax 27 0 11 792 4687 15 College Close Hamble le Rice P O Box 1023 Fontainebleau 2032 Southampton Hampshire Republic of South Africa SO31 4GU United Kingdom www danntech com www uk danntech com www danntech co za Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 28 of 28
27. solated input power supplies for parallel redundancy so that the unit can be powered from the batteries and can be powered from either battery bank This allows for continuous operation if either of the battery banks are switched off for any reason Watchdog Relay Power Output In A Current Shunts y Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 2 of 28 INPUT 1 INPUT 2 INPUT 8 Technical Description Internally the eiRMU 08 has two PCBs the bottom one being the Input PCB with eight isolated analogue inputs each with its own microprocessor to do signal conversion signal processing and isolated communication with the main processor on the Top PCB The Input PCB also has two power isolation and conversion modules to provide an isolated and regulated internal 24 VDC supply from either of the power supply inputs The two power inputs are provided for redundancy so either can be used and they are isolated from each other A wide input voltage range is allowed from 18 to 75 VDC so that the batteries themselves can be used to provide the power to the unit High quality plug in screw terminals are used and these can be keyed to reduce the risk of say plugging in a 0 60 V input into one set up for O to 30 mV Functional Diagram Power In A Power In B 18 72 VDC 18 72 VDC RS485 USB x Watchdog I TL Wide Input x Power 1 C
28. t a a earth chassis i Input i UU m er earth chassis input Circuitry 3 IN a J3 IN OV Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 11 of 28 Input Calibration Each input has an eight way DIP switch a Bi Colour Configuration Calibration LED and a push button switch which are used to do the Calibration and Setting the Standard Input Values INPUT INPUT DIP SWITCHES PUSH BUTTONS INPUT CONFIGURATION CALIBRATION Bi COLOUR LEDs The table in the section Input Mode Selection summarizes the Calibration procedure and the Setting of the Standard Input Value To do the input calibration This assumes you have opened the unit have the input Configured as you wish have powered up and you have an accurate voltage mV or current source available to use as an input 1 Set DIP switch 8 on switch 7 must be off the LED will flash green slowly 2 Inject the Input Minimum Calibration Value when stable press and hold the Push Button until the LED flashes red briefly and then release the Push Button the green LED with stay on for a second or so indicating that the input value has been captured then the green LED will flash slightly faster 3 Now inject the Input Maximum Calibration Value when stable press and hold the Push Button until the LED flashes red briefly and then release the Push Button the green LED with stay on for a second or so indicating that the
29. t board with all plug in screw terminals input circuits power converters isolators input LEDs input DIP switches input configuration jumpers links instrument earth links etc Top PCB upper printed circuit board with main processor front panel LEDs and top DIP switches Input Calibration Minimum this is the minimum analogue input value which was injected and then captured during the input calibration for that input Generally this will be the minimum value you want to be able to measure and will correspond to an Analogue Input register value of O Input Calibration Maximum this is the maximum analogue input value which was injected and then captured during the input calibration for that input Generally this will be the maximum value you want to be able to measure and will correspond to an Analogue Input register value of 4095 Standard Input Value SIV Minimum this is the minimum standard analogue input value which was injected and then captured during the standard input value calibration for that input Generally this will be the minimum working value you expect Input below this value would be abnormal or a fault condition Standard Input Value SIV Maximum this is the maximum standard analogue input value which was injected and then captured during the standard input value calibration for that input Generally this will be the maximum working value you expect Input above this value would be abnormal or a fault c
30. untime seconds pp 40040 power up or reset seconds Oto 59 Read Only Approximate time since the last power up or reset minutes me 40041 Runtime minutes Oto 59 Read Only Approximate time since the last 40042 power up or reset hours Runtime hours 0 to 23 Read Only Approximate time since the last power up or reset days 40043 U to 65535 Runtime days Read Only s gt s gt s gt s gt W W W W Filename eiRMU 08 User Manual docx 15 May 2014 Version 1 01 danntech process INSTRUMENTATION Page 23 of 28 Analogue Input Status Register Details Status Information Input DIP Switches DIP SW5 to 8 Status Hex S Mie All functions still operate just LEDs LEDs are Disabled disabled both on bottom and top PCBs Input is below minimum Red Flash standard input Slow and above minimum calibration values Input is above maximum standard input _ Flash and below Run Mode ast maximum calibration values Input outside of maximum and Red ON minimum 0x03 1 1 calibrated input values Waiting for minimum input value and push button Waiting for maximum input value and push button Input between minimum and Green ON maximum OxCO 1 1 standard input values Calibration Mode Standard Input Value Capture Mode Raw Data Green Flash Slow Green Flash Fast Red ON 0 2s _ Calibration OXEO i i 4 Green on confirmation 2s Input Hex Range Value 0
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