Radio/Serial Telemetry Module User Manual Thank you for your selection of the 905 module 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 enjoys a long life, double check ALL your connections with the user’s manual before turning the power on.
Contents FCC Notice: This user’s manual is for the ELPRO 905 series radio telemetry module. This device complies with Part 15.247 of the FCC Rules. Operation is subject to the following two conditions: 1) This device may not cause harmful interference and 2) This device must accept any interference received, including interference that may cause undesired operation. This device must be operated as supplied by ELPRO Technologies Pty Ltd.
Radio/Serial Telemetry Module User Manual How to Use This Manual To receive the maximum benefit from your 905 product, please read the Introduction, Installation and Operation chapters of this manual thoroughly before putting the 905 to work. Chapter Four Configuration explains how to configure the modules using the Configuration Software available. For configuration using the on-board switches, refer to the separate 905 Switch Configuration Manual.
Contents CONTENTS CHAPTER ONE INTRODUCTION .....................................................................................................................................7 1.1 GENERAL ....................................................................................................................................................................7 CHAPTER TWO INSTALLATION ................................................................................................................................
Radio/Serial Telemetry Module User Manual CHAPTER FIVE SPECIFICATIONS ................................................................................................................................ 45 CHAPTER SIX ..................................................................................................................................TROUBLESHOOTING 49 6.1 6.2 DIAGNOSTICS CHART ........................................................................................................................
Chapter One Introduction Chapter One INTRODUCTION 1.1 General The 905 range of telemetry modules has been designed to provide standard “off-the-shelf” telemetry functions, for an economical price. Telemetry is the transmission of signals over a long distance via a medium such as radio or twisted-pair wire. Although the 905 is intended to be simple in its application, it also provides many sophisticated features.
Radio/Serial Telemetry Module User Manual These modules can transmit I/O messages hundreds of kilometres via the trunked radio system. 105M-1, 2 and 3 modules differ only in their input/output (I/O) design, and can interface to 105U and 105S modules. For more information, refer to the 105M User Manual. • The 905U-C module provides an interface between host devices such as PLC’s or SCADA computers, and a radio telemetry system comprising 905U and 105S radio telemetry modules.
Chapter One Introduction of unlicensed operation for remote monitoring and control of equipment. That is, a radio licence is not required for the 905 modules in many countries. See Chapter Five Specifications for details. Input signals connected to a 905 module are transmitted to another 905 module and appear as output signals. These input signals may also be configured to appear as “inverted” signals on the output. A transmission occurs whenever a "change-of-state" occurs on an input signal.
Radio/Serial Telemetry Module Chapter Two 2.1 User Manual INSTALLATION General The 905 module is housed in a rugged aluminium case, suitable for DIN-rail mounting. Terminals are suitable for cables up to 2.5 sqmm in size. Normal 110/220/240V mains supply should not be connected to any input terminal of the 905 module. Refer to Section 2.3 Power Supply. Before installing a new system, it is preferable to bench test the complete system.
Chapter Two Installation Obstructions which are close to either aerial will have more of a blocking affect than obstructions in the middle of the radio path. For example, a group of trees around the aerial is a large obstruction, and the aerial should be raised above the trees. However if there is at least 100 metres of clear path before a group of trees, the trees will have little affect on the radio path.
Radio/Serial Telemetry Module 2.2.2 User Manual Three element Yagi aerial. A 3 element Yagi aerial provides approx 4 dB of gain. This may be used to compensate for coaxial cable loss for installations with marginal radio path. Note that these aerials should not be used if the coaxial cable lengths are less than the following minimum lengths, otherwise the power transmitted from the aerial will exceed the power permitted for the unlicensed channel. RG58 10 metres RG213 20 metres.
Chapter Two 2.2.3 Installation Collinear (3dB) aerial. A 3dB collinear aerial may be used in the same way as a 3 element Yagi to compensate for the losses in long lengths of coaxial cable. This type of aerial is generally used at a central site with more than 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 either AC or DC supply.
Radio/Serial Telemetry Module 2.3.1 User Manual AC Supply The AC supply is connected to the "SUP1" and "SUP2" terminals as shown below. + The AC supply should be "floating" relative to earth. A 220-240/16 VAC mains "plug-pack" is available for mains applications. 2.3.2 DC Supply For DC supplies, the positive lead is connected to "SUP1" and the negative to "GND". The positive side of the supply must not be connected to earth. The DC supply may be a floating supply or negatively grounded.
Chapter Two 2.3.3 Installation Solar Supply The 905 power supply also includes a 12 V solar regulator for connecting 12V solar panels of up to 30W, and solar batteries of up to 100AHr. The unit may not be powered from a solar panel without a battery. An 18W solar panel is sufficient for most solar applications. The size of the solar battery required depends on the I/O used. Batteries are sized for a number of sunless days with 50% battery capacity remaining as follows: No.
Radio/Serial Telemetry Module User Manual The internal power supply of the 905 module can supply a maximum 12V load of 700mA. In order to achieve this, the input power supply must be above 15VAC or 17VDC. Using these figures, it can be determined whether there is enough supply for more than one module - allow 100mA for recharging a battery. For example, assume there is a 905U-01 module and a 105S-01 module at the same location.
Chapter Two Installation suitable for voltage free contacts (such as mechanical switches) or NPN transistor devices (such as electronic proximity switches). Contact wetting current of approximately 5mA is provided to maintain reliable operation of driving relays. Each digital input is connected between the appropriate "DI" terminal and common "COM". Each digital input circuit includes a LED indicator which is lit when the digital input is active, that is, when the input circuit is closed.
Radio/Serial Telemetry Module User Manual output for a certain period. This feature provides an intelligent watch dog for each 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 connected to the appropriate pair of "DO" terminals. Each digital output circuit includes a LED indicator which is lit when the digital output is active.
Chapter Two 2.4.3 Installation Digital Outputs (905-2 and 905-3) The digital outputs on the 905-2 and 905-3 modules are transistor switched DC signals, FET output to common rated at 30VDC 500 mA. The 905-2 provides one digital output and the 9053 provides eight digital outputs. The first four DO’s on the 905-3 module are also the pulse outputs - that is, the first four DO's can be either digital outputs or pulse outputs. The function of each of these outputs may be configured individually.
Radio/Serial Telemetry Module User Manual Externally powered loops may be connected by connecting the input between "AI 1+" and “AI 1-” for analogue input 1 or "AI 2+" and “AI 2-” for analogue input 2, and so on for other inputs. Analogue Input 1 "AI 1+" may also be configured to control a high/low analogue set-point. See Chapter 4 Configuration for further details. Common mode voltage may be -0.5V to 27V.
Chapter Two Installation For the 905-2 module, the four digital inputs (DI 1-4) may be configured as pulse inputs. The first digital/pulse input DI 1 has a maximum rate of 1000 Hz (min. off time 0.5 ms), while DI 2-4 have a maximum rate of 100 Hz (min. off time 5 ms). When using DI 1 at high pulse rates (more than 100 Hz), a divide by 10 function may be configured to reduce the pulse count at the output, as Pulse Outputs have a maximum rate of 100 Hz.
Radio/Serial Telemetry Module User Manual The serial port is a 9 pin DB9 female and provides for connection to a terminal or to a PC for configuration, field testing and for factory testing. This port is internally shared with the RS485 ensure that the RS485 is disconnected before attempting to use the RS232 port. Communication is via standard RS-232 signals. The 905 is configured as DCE equipment with the pin-out detailed below.
Chapter Two Installation 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 configuration is complete. man_905_2.0.
Radio/Serial Telemetry Module User Manual RS485 is a balanced, differential 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 in the diagram below and terminated at each end of the network with a 120 ohm resistor.
Chapter Two Installation Chapter Three 3.1 OPERATION Power-up and Normal Operation When power is initially connected to the 905 module, the module will perform internal diagnostics to check its functions. The following table details the status of the indicating LED’s on the front panel under normal operating conditions.
Radio/Serial Telemetry Module User Manual continue to attempt to transmit to the remote module every ten minutes. For critical applications, this status can be configured to be reflected to an output on the module for alert purposes. The outputs on the module may also be configured to reset after a specified timeout (digital outputs reset to “off”, analogue outputs reset to 0 mA) allowing the system to turn off in a controlled manner e.g. a pump will never be left running because of a system failure.
Chapter Three Operation Repeaters can be used in a system to increase range. Each 905U unit can be configured to act as a repeater. When configuring an input to be mapped to an output, the communications path to the output unit, including the repeater addresses is specified. The 905U acts as a digital repeater, that is, the signal is decoded and then retransmitted “as new”.
Radio/Serial Telemetry Module User Manual calculating the appropriate sensitivity required for a given application: Instantaneous change of 2 x sensitivity on input → 3 second output response Instantaneous change of 10 x sensitivity on input → 5 second output response The analogue inputs have 15 bit resolution and 0.016mA accuracy. An example of an analogue input and how the output follows it is shown below: Pulse input change of state Pulse input counts do not use “change-of-state” transmissions.
Chapter Three Operation output pulse will be output evenly over the pulse output update time which is configured in the module. For example, assume that 905 module receives a pulse input update message from the remote 905 module, and the difference between the pulse input count and the pulse output count is 12 pulses. The 905 will then output the 12 pulses evenly over the next minute (if the pulse output update time is 1 minute).
Radio/Serial Telemetry Module User Manual set-point operation works as for the 905-1 module. 3.1.4 Start-up Poll After a 905 module has completed its initial diagnostics following power up, it will transmit update messages to remote modules based on the values of the module’s inputs. The module’s outputs will remain in the reset/off/zero condition until it receives update or “change-of-state” messages from the remote modules.
Chapter Three Operation has occurred. Analogue inputs and outputs have time delays of 1 to 2 seconds. Messages transmitted via serial link are received in less than 20 mSec, however a message sent by radio takes approx 100 mSec. These delays are not significant is most applications, however if your application requires faster responses, then the above delays need to be considered. 3.2.
Radio/Serial Telemetry Module User Manual There are several ways of improving a marginal path :• Relocate the aerial to a better position. If there is an obvious obstruction causing the problem, then locating the aerial to the side or higher will improve the path. If the radio path has a large distance, then increasing the height of the aerial will improve the path. • Use an aerial with a higher gain.
Chapter Four Chapter Four 4.1 Configuration CONFIGURATION Introduction The 905 modules may be configured by connecting a computer (PC) using the 905 Configuration Software programme. Alternatively, the module may be configured by the on-board miniature switches located under the blue cover on the front of the module. This chapter describes the default configuration of the module and using the Configuration Software Programme.
Radio/Serial Telemetry Module User Manual Warning - do not allocate the address number 1 to a 905-3 module. In addition to these network configurations, operational parameters called User Options may be configured to change the features of the 905 operation. These parameters may be configured using the Configuration Software of configuration switches (see 905 Switch Configuration Manual) 4.
Chapter Four Configuration For 905-2 and 905-3 modules, the default configuration is as follows :- The following table details the default values for User Options : Option Factory Set Value 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 100 Hz (if Pulse Rate is mapped) Digital Input Debounce Time 0.
Radio/Serial Telemetry Module User Manual 4.3 905 Configuration Software This chapter describes installation and operation of configuration software for the 905 radio and serial telemetry modules. Configuration software eliminates the need for configuration of the unit via the 16 DIL switches under the blue plastic plug.. This software provides all of the functions available through the switch configuration as well as additional configuration options not available through switch configuration.
Chapter Four 4.3.2 Configuration Installation Running from floppy disk The software may be run directly from the distribution disk. If the software is to be used in this manner, a copy of the distribution disk should be made, and the copy used to run the software. Installing to a hard disk Most users will want to install the configuration software to the hard disk of their computer.
Radio/Serial Telemetry Module User Manual This screen shows the system address, unit address, a summary of all of the mappings configured, and the current file (if any) being used. To move between editing the system address, unit address, and configuration mappings, use the key, or use the key in conjunction with the highlighted letter. Alternatively, simply click on the appropriate section with the mouse.
Chapter Four Configuration Changing an existing mapping Select the mapping to change using the mouse or arrow keys, and either press the key, or click the right mouse button. Deleting an existing mapping Select the mapping to delete using the mouse or arrow keys, and press the key to delete the mapping. A message asks for confirmation to ensure mappings are not deleted accidentally.
Radio/Serial Telemetry Module User Manual Select the desired mapping configuration, then press or select the OK button on the dialogue box to return to the main screen. Outputs are identified by the corresponding output name for each type of destination module.
Chapter Four Configuration Successful comms does not turn off the output, so the “Drop outputs on comms fail” (Refer below) time should be set to a period similar to the update time for the remote. This allows comms fail indication to multiple remotes to be configured to appear at the same output, which acts as a general comms fail indication. Configuring a “Comms Fail Address” of zero causes communication failure to any destination module to be indicated on the selected output.
Radio/Serial Telemetry Module • Update Times • Analogue Sensitivity • Reset Output on Comms Fail • Digital/Analogue Debounce (905-1 and 905-2 only) • Analogue Debounce (905-2 only) • Set-points (905-1 and 905-2 only) • Pulse Rate Scale (905-1 and 905-2 only) • Pulse Output Update (905-1 and 905-3 only) User Manual Update Times allows configuration of how frequently each configured mapping is updated (Integrity Update).
Chapter Four Configuration 905-2 module (0.5 - 8 seconds). The default value of 0.5 seconds is suitable for most applications. In applications where a digital input may turn on and off several times slowly (for example, security switches or float switches) a debounce time of up to 8 seconds may be configured. The configured debounce time has no affect on pulse inputs. Note that the analogue debounce is not configurable for the 905-1, but is configurable in the 905-2.
Radio/Serial Telemetry Module • Select the appropriate serial port from the list provided (COM1 - COM4) • From the Communication menu, select “Program The 105” User Manual The configuration program will now attempt to download the configuration data to the 905 module. If all goes well, a “Programming” prompt will appear. This prompt will remain until programming of the 905 is complete.
Chapter Five Specifications Chapter Five SPECIFICATIONS General EMC approval EN55022 (CISPR 22) 89/336/EEC - CLASS B EN 50082-1 I-ETS 300 683 AS 3548 Radio standards – 105U MPT 1329 UK 458 MHz, 500 mW EIRP I-ETS-300-220 430 - 450 Mhz, 10 - 500 mW AS 4268.2 AUST 472 MHz, 100 mW EIRP Radio standards – 905U RFS29 NZ FCC Part 15.
105 Radio/Serial Telemetry Module User Manual Single channel synthesised Direct frequency modulation Frequency 405 - 490 Mhz 12.5 kHz channel spacing Transmit power Adjustable 10 - 500 mW Spurious emissions RX - <-57 dBm TX - <-37 dBm Frequency Stability +/- 1.0 kHz Receiver Sensitivity 0.
Chapter Five Specifications remote output configurable 905-1 Four Opto-isolated (5000V)inputs, suitable for voltage free contacts or NPN transistor, contact wetting current 5mA, input debounce 0.5 second Inputs and Outputs Digital Inputs 105-2 Four 105-3 None Digital Outputs 105-1 Four Relay output contacts, normally open, AC1 5A 250V AC3 2A 250V, 5A 120V DC1 5A 30V, 5A 20V DC3 2A 30V, 5A 20V Digital Outputs 105-2 One 105-3 Eight FET output, 30 VDC 500mA max. Pulse Inputs 105-1 One Uses DI1.
105 Radio/Serial Telemetry Module 105-2 None User Manual Resolution 15 bit Accuracy 10 bit (0.
Chapter Six Chapter Six Troubleshooting TROUBLESHOOTING 6.
105 Radio/Serial Telemetry Module 0 0 0 0 User Manual 0 0 0 0 1 0 0 0 0 0 0 0 Input signals may now be connected to the input terminals of the module. If the module is operating correctly, then the input signals will be reflected to the corresponding output on the same module. For example, if DI 1 is connected to common - i.e. the first digital input is turned "ON" - then DO 1 will activate, if the module is functional.
Chapter Six Troubleshooting 105 V1.0 1052 V1.0 a) Ins a) Digital Inputs b) Tones b) Analogue Inputs c) Comms c) Tones d) DO1 d) Comms e) DO2 e) DO1 f) DO3 f) Switch g) DO4 g) Signal h) AO1 > i) AO2 j) Switch k) Signal > 1053 V1.0 a) Ins b) Tones c) Comms d) DO1 e) DO2 f) DO3 g) DO4 h) DO5 i) DO6 j) DO7 k) DO8 l) AO1 m) AO2 n) AO3 o) AO4 p) AO5 q) AO6 r) AO7 s) AO8 t) Switch u) Signal > Choose an item from the menu by entering the letter before that item.
105 Radio/Serial Telemetry Module User Manual AI1 and AI2 represent the value for the two analogue inputs. Full scale input (20 mA) is displayed as C000, 4mA is displayed as 4000, and 0ma is displayed as 2000. Analogue inputs are filtered digitally with a time constant of 1 second, so a sudden change in the analogue input current will result in a slower change in displayed analogue value, finally settling at the new value.
Chapter Six Troubleshooting Analogue Inputs VBAT PR1 PR2 PR3 8138 4000 4000 4000 PR4 AI1 AI2 AI3 AI4 AI5 AI6 4000 0D3A 0CD2 0CC7 0CC7 0CD4 0CC7 105-3 Modules ML 00 VBAT VSLR 9FA2 0000 Tones This provides the same function as described above in 6.2.2. Tone Reversals. This function may be used to check VSWR of aerials, and may be used in conjunction with the Signal option (described below) to check the path between two 105 units.
105 Radio/Serial Telemetry Module User Manual AO1 to AO8 These options allow the user to set analogue outputs to any value. To set the output, select the corresponding menu item. At the prompt type the value required for the analogue output as a four digit hexadecimal value. Refer to the table above for analogue current/expected value relationship. To set AO2 on 105-3 to 19 mA : >m AO2 >B800 Switch This option allows testing of the DIL (Dual In Line) switches used for the configuration of the module.
Chapter Six Troubleshooting range of influences, including atmospheric conditions, changing landscape, degradation of aerials or co-axial cable, low battery voltage etc. Fade margin is an indication of how far a radio path can deteriorate before communication becomes unreliable. When using the Signal feature, a meter is displayed with a mark indicating the current received radio signal level. To check the radio path between two units, select the signal option at the local unit.
105 Radio/Serial Telemetry Module User Manual Chapter Seven WARRANTY & SERVICE We are pleased that you have purchased this product. Your purchase is guaranteed against defects for a 365 day warranty period, commencing from the date of purchase. This warranty does not extend to: - Failures caused by the operation of the equipment outside the particular product's specification.
Appendix A Appendix A System Example SYSTEM EXAMPLE The following example of a system is a comprehensive guide to using some of the features of the 105 range and design of 105 system. The example application is a pump station which supplies water from a reservoir to a tank station. Signals are transferred between the pump station and tank station by radio - the distance between the two stations is 1.5 km (1 mile), and the radio path is heavily obstructed by buildings and trees.
105 Radio/Serial Telemetry Module User Manual The following design points should be noted :• A test of the radio path between the pump station and the tank station indicated that the radio path would be reliable provided aerials were installed at 6 m above the ground. At each site, the coaxial cable would be approx 10 m in length, so it was decided to use 3 element Yagi aerials with RG58 coaxial cable - the Yagi aerials would compensate for the loss in the cable.
Appendix A System Example Tank Station Configuration The 105U-2 module has the following configuration :- Note the following points in the configuration : • The configuration software used was CFG105-2.EXE as the module is a 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 this PIN (PLSR1) is mapped to Out2 at #97 via #1.
105 Radio/Serial Telemetry Module User Manual • The pulse rate scaling for PIN1 has been set to 5 Hz to match the maximum flow rate of the flow meter. Note that PIN1 has not been configured for "divide by 10" (for 1000 Hz pulse signals). • AIN1 (the level transducer) is mapped to Out1 at #97 via #1. The analogue debounce has been set to 2 sec. This is to avoid any wave action on the surface of the tank causing un-necessary change transmissions.
Appendix A System Example Note the following points in the configuration : • The configuration software used was CFG105-1.EXE as the module is a 105U-1. • The system address is 10587 (same as before) and unit address is 1. • DIN1 (pump fault signal) is mapped to Out1 (DO1) at #96 which is the control station. Note that no repeater address is necessary as there is a direct link between #1 and #96.
105 Radio/Serial Telemetry Module User Manual Control Station Configuration The 105S-3 module has the following configuration :- Note the following points in the configuration : • The configuration software used was CFG105-3.EXE as the module is a 105S-3. • The system address is 10587 (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.
Appendix A System Example digital outputs. In the event of a system failure, the digital outputs will stay at their last correct status, but the analogue outputs will reset to 0 mA. System Failure Alarm After the system had been running for some time, the operators wanted a "system failure" output at the control station, to warn the operators that there was a fault with the system.
