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Radio/Serial Telemetry Module

User Manual

Page

6

©

March 2000

CHAPTER FIVE SPECIFICATIONS ................................................................................................................................ 45

CHAPTER SIX ..................................................................................................................................TROUBLES HOOTING

49

6.1

D

IAGNOSTICS

C

HART

.............................................................................................................................................49

6.2

S

ELF

T

EST

F

UNCTIONS

..........................................................................................................................................49

6.2.1

Input to Output Reflection (105-1 only)................................................................................................ 49

6.2.2

Radio Testing using Tone Reversals ....................................................................................................... 50

6.2.3

Diagnostics menu........................................................................................................................................ 50

CHAPTER SEVEN......................................................................................................................WARRANTY & SERVICE

56

APPENDIX A SYSTEM EXAMPLE................................................................................................................................... 57

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Содержание 105S-1

Страница 1: ...le for your telemetry needs We trust it will give you many years of valuable service ATTENTION Incorrect termination of supply wires may cause internal damage and will void warranty To ensure your 905...

Страница 2: ...ease contact ELPRO Technologies for end user antenna and connector recommendations Notices Safety Exposure to RF energy is an important safety consideration The FCC has adopted a safety standard for h...

Страница 3: ...requency regulatory authority in your country on a non protection basis Although all care is taken in the design of these units there is no responsibility taken for sources of external interference Th...

Страница 4: ...ed 1 and Error Bookmark not defined 3 20 2 4 6 Pulse Input Error Bookmark not defined 1 20 2 4 7 Pulse Inputs Error Bookmark not defined 2 20 2 4 8 Pulse Output Error Bookmark not defined 1 21 2 4 9 P...

Страница 5: ...IFICATIONS 45 CHAPTER SIX TROUBLESHOOTING 49 6 1 DIAGNOSTICS CHART 49 6 2 SELF TEST FUNCTIONS 49 6 2 1 Input to Output Reflection 105 1 only 49 6 2 2 Radio Testing using Tone Reversals 50 6 2 3 Diagno...

Страница 6: ...tatus and low battery status The unit will monitor the input signals and transmit the signal information by radio or RS485 twisted pair to another 905 module At the remote unit the signals will be rep...

Страница 7: ...al S RS232 RS485 serial only M MAP27 trunked radio interface and x is 1 Input Output module 2 Input module includes one output 3 Output module C Interface module 905U 1 105S 1 905U 2 105S 2 905U 3 105...

Страница 8: ...with the correct receiving address will acknowledge the message with a return transmission If the original module does not receive a correct acknowledgement to a transmission it will retry up to five...

Страница 9: ...er information is detailed below Each 905 module should be effectively earthed via a GND terminal on the 905 module this is to ensure that the surge protection circuits inside the 905 module are effec...

Страница 10: ...g tape such as 3M 23 tape and finally with another layer of PVC UV Stabilised insulating tape The first layer of tape allows the joint to be easily inspected when trouble shooting as the vulcanising s...

Страница 11: ...in other directions Hence Yagi aerials should be installed with the central beam horizontal and must be pointed exactly in the direction of transmission to benefit from the gain of the aerial Also not...

Страница 12: ...an one remote site or at a repeater site The collinear aerial looks similar to the dipole except that it is longer 2 3 Power Supply The 905 power supply is a switch mode design which will accept eithe...

Страница 13: ...ry supply is connected to BAT and GND terminals The positive lead of the external supply should be protected by a 2A fuse Upon failure of the normal supply the 905 module may continue to operate for s...

Страница 14: ...1 x No of DI s 0 025 x No of DO s 2 x Analogue loop load The analogue loop load is the total signal current for the AI s and AO s which are powered from the internal 24V supply Externally powered loop...

Страница 15: ...3 analogue inputs 6 digital inputs and 4 digital outputs The total load will be TYPE OF LOAD LOAD mA 905U 01 quiescent 70 105S 01 quiescent 45 6 DI 10 mA 60 3 AI 20mA x 2 120 4 DO 25mA 100 Battery cha...

Страница 16: ...e is less than 200 ohms the device will be able to activate the digital input For pulse inputs refer to Section 2 4 6 2 4 2 Digital Outputs 905 1 The 905 1 module provides four normally open voltage f...

Страница 17: ...ach output so that a communications failure at a transmitting site causes the output to revert to a known state See section 4 4 Changing User Options for further details The output circuit is connecte...

Страница 18: ...digital output circuit includes a LED indicator which is lit when the digital output is active 2 4 4 Analogue Inputs 905 1 and 905 2 The 905 1 module provides two 4 20 mA DC analogue inputs for connec...

Страница 19: ...istance 1000 ohms In this case the analogue loop is connected between a 24V terminal and AO 1 for the first analogue output or AO 2 for the second analogue output and so on for the other output signal...

Страница 20: ...e output PO This output accurately recreates the pulses counted at a pulse input at a 905 1 or 905 2 module Although the count is accurately re created the rate of output pulses may not accurately ref...

Страница 21: ...Out Transmit Data Serial Data Input High 0 Low 1 3 TD In Receive Data Serial Data Output High 0 Low 1 4 DTR In Data Terminal Ready not used 5 SG Signal Ground 6 DSR Out Data Set Ready not used 7 RTS...

Страница 22: ...n_905_2 0 doc Page 23 The RS485 Communications format is 9600 baud 8 data bits one stop bit no parity Note that the RS485 port is shared internally with the RS232 port disconnect the RS232 cable after...

Страница 23: ...ntial standard but it is recommended that shielded twisted pair cable be used to interconnect modules to reduce potential Radio Frequency Interference RFI An RS485 network should be wired as indicated...

Страница 24: ...e 905 module monitors the power supply and provides status of supply failure and battery low voltage for mapping to one of the module s own outputs or transmitting to a remote output When the 905 modu...

Страница 25: ...radio RX LED flashes if RS485 Receive message RX LED flashes Check message for integrity RX LED flashes Acknowledgement received okay communication complete If message okay transmit it back as acknow...

Страница 26: ...ounce In addition to change of state transmissions each module will transmit the status of each input to its corresponding output every ten minutes configurable These updates mean that the outputs are...

Страница 27: ...e input counts are transmitted at set intervals The default period is 1 minute and is configurable Note that the pulse outputs are re created from the accumulated pulse count If a transmission is miss...

Страница 28: ...outputs is 100Hz Input Pulses Time Output Pulses PI update time PO update time Time As well as accumulating the pulse input the 905 module will also calculate the rate of pulses Pulse rates are treate...

Страница 29: ...will not reset the output That is once communications is re established and the CF status is reset the output will stay on The Reset Output feature see below is used to reset the output The output wil...

Страница 30: ...ssion rate of greater than 50 per minute this will give a peak rate of approx 100 per minute Note that this peak rate assumes that all radio paths are reliable poor radio paths will require re try tra...

Страница 31: ...consider system failure I O systems operating on a wire link will fail eventually and a radio system is the same Failures could be short term interference on the radio channel or power supply failure...

Страница 32: ...one or more outputs anywhere in the system The unit address determines the method of communication to a module Any module with a unit address between 96 and 127 will communicate by RS485 only Other un...

Страница 33: ...figuration Using Default Settings If your application requires only a single pair of 905 modules communicating via radio or serial link default settings may satisfy your needs If so no configuration i...

Страница 34: ...Update transmissions Every 10 minutes Analogue Change of state sensitivity 3 Reset outputs on Comms fail No Analogue Setpoints if mapped Low Set point 30 High Set point 75 Pulse Output Rate Scaling if...

Страница 35: ...be downloaded for display and modification Configuration files can be saved to disk for later retrieval Configuration of 905 modules consists of entering I O mappings and selecting User Options An I...

Страница 36: ...PY A EXE CFG105 Hints for Windows Users For slower machines the software should be run in Full Screen and Exclusive mode under Windows If problems are experienced exit windows and run the program from...

Страница 37: ...em address and unit address simply move to the appropriate box using the TAB key or the ALT letter keys or mouse click and type in a new number or use the arrow keys to edit the old number Entering a...

Страница 38: ...entry of the desired mapping Depending on the type of unit being configured 905 1 905 2 or 905 3 the dialogue box will vary The following is the display for configuration of Input Output mappings on...

Страница 39: ...ls When a unit is first turned on its outputs will not be set until it receives update messages from any other units in the system which have inputs configured to appear at those outputs To ensure tha...

Страница 40: ...comms fail should be indicated Saving and Loading Configurations to from Disk It is strongly recommended that the configuration for each unit in the system is saved to a backup file In the unlikely e...

Страница 41: ...signals which vary widely over a short period of time or have a normal oscillation the analogue sensitivity should be set to an appropriately large value This ensures that many change messages are no...

Страница 42: ...ogue output On the 905 1 the maximum value is 100 Hz On the 105 2 the maximum value is 1000 Hz for input 1 and 100 Hz for inputs 2 4 Pulse input 1 on the 905 2 module can measure pulse signals up to 1...

Страница 43: ...ding existing Configuration from the 905 To download the configuration from a 905 for editing or simply for checking follow the following steps Connect the cable from the PC s serial port to the 905 s...

Страница 44: ...on digital I O RX and TX Operating Temperature 20 to 60 degrees C Power Supply Battery supply 11 3 15 0 VDC AC supply 12 24 VAC 50 60 Hz Overvoltage protected DC supply 15 30 VDC Overvoltage and rever...

Страница 45: ...2 928 Mhz 250 kHz channel spacing Transmit power Adjustable 100 mW 1 W Spurious emissions RX 57 dBm TX 37 dBm Frequency Stability 10 kHz Receiver Sensitivity 0 4uV at 12dB SINAD Signal detect RSSI 120...

Страница 46: ...s 1000Hz min off time 0 5msec Max rate of DI2 4 is 100Hz min off time 5msec Pulse Output 105 1 One 105 2 None 105 3 Four FET output 30 VDC 500mA max Max rate for 105 1 is100 Hz Max rate for 105 3 is 1...

Страница 47: ...s via radio or RS485 or network of both Up to 95 radio units with up to 32 serial units off each radio unit Mapping Any input to any output in system User Configuration Via on board DIP switches or RS...

Страница 48: ...ove When the OK LED extinguishes shutdown state is indicated In this state all digital outputs turn OFF and the 24V supply turns off On processor failure or on failure during start up diagnostics the...

Страница 49: ...th between two units see below received signal strength indication The tone reversals function is initiated by setting all of the DIL switches to ON and holding down the red button for approximately 5...

Страница 50: ...Modules 1234MLS P CNT AI1 AI2 P RATE VBATT 0101001 00F6 C000 4000 8000 9C00 The first 7 values 1234MLS each represent a single digital input A 1 indicates that that input is ON and a 0 indicates that...

Страница 51: ...xt position Rightmost position 0 0 000 0 000 0 000 1 0 125 0 008 0 000 2 0 000 0 250 0 016 0 001 3 2 000 0 375 0 023 0 001 4 4 000 0 500 0 031 0 002 5 6 000 0 625 0 039 0 002 6 8 000 0 750 0 047 0 003...

Страница 52: ...e been corrupted are displayed with a in the first column of the display The first four hexadecimal digits are the system address attached to the message and must match for units to communicate succes...

Страница 53: ...ith an Enter button located to the right of the pair the display indicates the current switch settings with the digit 1 corresponding to On and the digit O corresponding to Off Changing the switch set...

Страница 54: ...conditions a reading of 0 indicates a very marginal communication path For reliable communications the signal reading should be 3 or above k Minimum signal level for reliable comms Signal 0123456789...

Страница 55: ...re available from your Service Agent your source of purchase or from the master distributor in your country upon request and should be noted if you are in any doubt about the operating environment for...

Страница 56: ...y buildings and trees A control station is located near the pump station and there is an existing signal cable between the control station and the pump station A 105U 1 module is installed at the pump...

Страница 57: ...ere was no existing electrical panel at this station a small steel enclosure was installed on the light pole A 2 Amp Hour sealed battery was installed to provide power during any mains failure The flo...

Страница 58: ...105U 2 The system address is 10587 a random selection and unit address is 2 PIN1 the flow meter is mapped to Out3 D P output 3 at 96 which is the control station 1 is a repeater The pulse rate for th...

Страница 59: ...and 75 When the tank level drops to 40 DO2 at the pump station will activate to start the pump When the level rises above 75 DO2 will reset to stop the pump The update time for SETPT1 has been change...

Страница 60: ...al link to 96 AIN1 pump amps is mapped to Out3 at 97 AO3 at control station An additional mapping has been entered LOW VOLT has been mapped to Out8 at 96 DO8 at the control station This mapping is for...

Страница 61: ...87 same as before and unit address is 96 As the module is a 105 3 module it will automatically assume addresses 96 and 97 The only mappings are Start up polls Note that there are two separate polls on...

Страница 62: ...as a system OK signal It was normally active if the signal reset then this represented a system failure At the tank station there is no signal wired to DI4 By mapping NOT DI4 to DO4 at the control sta...

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