Installation Manual 905U-L Wireless I/O
Contents
1. i 27 BLOTT ER NE 24 Doo 26 8116 1152 1 6 0 23 PIN TEL de 34 dipole antennas rrenen 17 electronic proximity switches 23 explosive areas reenn 21 floating input AEViIce 31 IN DACK CIOD E Siscie 24 gain Nr 14 horizontal polarization 19 WI SEI He 34 instrument transducers 26 INterference 15 internal surge protection 21 LEDs ICONE EE irpasta 12 transmitter i 10 905U L Wireless I O Version 1 6 905U L Wireless I O Installation Manual IGRICHINO TOG PR EE 16 Ve Lada as ET LG ricca rina 16 ine Of SiON EE 15 linearization tableS 29 loop powered device i 31 maximum transmission distance 15 mechanical SWItCheS 23 millivolt signal 29 Er 14 ODSITUCHONS siriana 15 intermediate ii 15 over voltage iii 26 passive transiStor i 30 OU RE EN 38 P er 26 OFA ZATION aaa 19 Oa 74516 ERRO RE RR EN 19 power supply rissa 21 WS go EEE 21 BG OI MS EE 36 10 EN 30 PYG Tae EEE 16 Radio Frequency Interference 26 receiver COMPONEMNG cceceseseeeeeseseseesseesseeoeeeceesseensees 11 TRON panel siseses 12 LE DO enee iii cnr 12 termina2. Installation Manual 905U L Wireless I O Version 1 6 man 905U L installation v1 6 doc 905U L Wireless I O Installation Manual e Document information Installation Manual 905U L Wireless I O Version 1 65 ELPRO contact details Address gt 9 12 Billabong Street Stafford QLD 4053 Telephone gt 61 0 7 3352 4533 Fax gt 61 0 7 3352 4577 Email gt sales elprotech com Website gt www elprotech com Copyright Copyright 2007 ELPRO Technologies Pty Ltd All rights reserved Limited lifetime warranty disclaimer and limitation of remedies ELPRO products are warranted to be free from manufacturing defects for the serviceable lifetime of the product The serviceable lifetime is limited to the availability of electronic components If the serviceable life is reached in less than three years following the original purchase from ELPRO ELPRO will replace the product with an equivalent product if an equivalent product is available This warranty does not extend to Failures caused by the operation of the equipment outside the particular product s specification or Use of the module not in accordance with this User Manual or Abuse misuse neglect or damage by external causes or Repairs alterations or modifications undertaken other than by an authorized Service Agent ELPRO s liability under this warranty is limited to the replacement or repair of the product This warranty is in lieu o
3. communication failure and local setpoint status Relay outputs Status outputs 4 20 mA with over range Analog input on and under range page 26 Analog inputs 0 10 mA with over range 24V Loop supply Provides power for 1 Installing the external current loop up to power supply on 35 MA page 21 Analogue setpoint Allows discrete setpoint to Refer to the User be controlled from analog Manual input Threshold adjustable via rotary switch Thermocouple millivolt input Provides measurement of Thermocouple E J K T type input on page 29 Thermocouple millivolt signals and user defined thermocouple types Thermocouple setpoint Lets you control discrete Refer to the User setpoint from thermocouple Manual with threshold adjustable via rotary switch Up to 10Hz Pulse input on page 30 0 22 mA suitable for loop Analog output on powered floating input or page 31 single ended input device is output R a For more information see the next sections 905U L Wireless I O Page 22 of 40 Version 1 6 905U L Wireless I O Installation Manual Digital inputs The 905U L T module provides two digital inputs suitable for gt Voltage free contacts e g mechanical switches or gt NPN transistor devices e g electronic proximity switches or gt 0 5V signals 2V 4V Minimum range Note PNP transistor devices are not suitable The unit provides contact wetting curr
4. The module provides linearization tables for J K and T type thermocouples and also supports other types via a user linearization table Millivolt signals in the range 10mV to 100 mV are supported For more information on configuring the thermocouple input and cold junction compensation to suit your application refer to the User Manual Thermocouple Input Thermocouple Input Ground Cable shield Note The cable shield is optional however ELPRO recommends cable shields for long cable runs 905U L Wireless I O Page 29 of 40 Version 1 6 905U L Wireless I O Installation Manual e Pulse input The 905U L T module lets you configure the digital inputs as pulse inputs with the following characteristics Characteristic Value maximum rate 1062 _ minimum oftine 20 msec minimum n time 20 msec Using this mode you can map the pulse count to a remote output by transmitting the pulse count to a 905U G module register or re generating as a Pulse Output on 905U 1 or Digital Output on a 905 3 unit Note You should connect the pulse input in the same way as a digital input The following diagrams illustrate different connection methods Connection Example method Passive transistor Passive Transistor Device Active pulse device External Power Supply Note Use a solid state relay if the voltage range is not suitable Voltage Range is low 2V max high 4V min 905U L Wirele
5. 13 EI 13 zener diode protection i 26 zero based sIgnalSs i 26 Page 40 of 40
6. 905U L Wireless I O Installation Manual e The front panel contains the following components SMA antenna connector A at top of unit RS232 configuration port i gt RSSI push button The LEDs on the front panel indicate the unit status LED Status Indicates Mone Nopomersupoy O O O The Output LEDS i e D1 D2 D3 light when the corresponding output is active for RelroupuD1ison con cis oo i fe wows pe ooo LEDs with RSSI Push When you press the RSSI push button the unit shows the signal strength by lighting Button Pressed the LEDs from the bottom to the top Signal strength is the strength of the last message received that was addressed to this station fo feas teo foose O Jor ernen vorera oam z a Output LED flashing If an output is in communication failure the corresponding LED flashes at 5 Hz quickly Josey Outpt isi cormuniaton aire rs Tasos pupi communication tawe 905U L Wireless I O Page 12 of 40 Version 1 6 905U L Wireless I O Installation Manual e Installing the antenna This section explains how to install your antenna and contains the following sections Section Description For more information see Supported antennas and cables Details the antennas and cables you Supported antennas on can use with the units page 13 Radio transmission distances Details the distances for reliable Radio transmission operation distances on page 15 Installing and
7. an intelligent watchdog for each output so communications failure at a transmitting site causes the output to revert to a known state The output circuit is connected to the appropriate pair of Digital Output terminals Each digital output circuit includes a LED indicator that lights when the digital output is active The LED flashes if the watchdog alarm is active In order to comply with Electrical Safety Standards when connecting SELV AND voltages which are greater than SELV SOVAC or 60VDC together then Relay Output 2 must NOT be used in order to provide sufficient isolation between the outputs 905U L Wireless I O Page 24 of 40 Version 1 6 905U L Wireless I O Installation Manual e Status outputs The unit contains the following status outputs gt System OK gt Setpoint Output and gt Communications Failure Status outputs are FET output to common rated at 30VDC 500 mA Connect the output circuit to the appropriate Status Output terminal Each status output circuit is associated with an LED indicator that lights lit when the digital output is active Max 30VDC 0 54 The following table details the status output behavior Status output LED LED Description status System OK active both modules No fault detected System OK inactive OK e Internal fault detected e Supply voltage Low e Analog Loop supply overloaded Setpoint Output 905U L T SP Green Local setpoint attached to 4 20mA analog input Comm
8. earthing antennas Details important information about Installing and earthing installing and earthing antennas antennas on page 16 Dipole and collinear antennas Details important information about Dipole and collinear using dipole and collinear antennas antennas on page 17 Yagi antennas Details important information about Yagi antennas on page 19 using Yagi antennas For more information see the next sections Supported antennas You can use the following antennas with the units Antenna Additional information Total gain including cable Whip antenna for mounting directly onto the module operation up 6 dBi to 2 mile 1 km You can use the following cables with the units The following table shows compatible cables for different antennas when used with the 905U L T Antenna North America Australia NZ SG900EL Any cable CC10 or CC20 SG900 6 Any cable CC20 YU6 900 CC20 External cable with loss gt 9dB YU16 900 External cable with loss gt 9dB External cable with loss gt 15 dB 905U L Wireless I O Page 13 of 40 Version 1 6 905U L Wireless I O Installation Manual You must carefully select antennas for 905U L T modules to avoid contravening the maximum power limit on the unlicensed channel The net gain of the antenna cable configuration should be no more than 6dB in North America USA Canada Mexico and no more than 0 dB in Australia New Zealand Note The net gain of an antenna cab
9. in accordance with RSS 119 of the Industry Canada rules See the label on the unit for the specific Industry Canada certification number and any other certification designations NOTE Any changes or modifications not expressly approved by ELPRO Technologies P L could void the user s authority to operate this equipment To operate this equipment legally the user must obtain a radio operating license from the government agency This is done so the government can coordinate radio users in order to minimize interference Safety information FCC Notice This device complies with Part 15 247 of the FCC Rules Operation is subject to the following two conditions gt This device may not cause harmful interference and gt This device must accept any interference received including interference that may cause undesired operation NOTE This equipment is suitable for use in Class 1 Division 2 groups A B and C or non hazardous locations only In order to comply with Electrical Safety Regulations this module must be installed in an Electrical AND Fire enclosure This enclosure may be a single or multiple enclosures Access to the module is to be made by a Service Person only 905U L Wireless I O Page 5 of 40 Version 1 6 905U L Wireless I O Installation Manual About this document This document is the 905U L Wireless I O Installation Manual that describes how to install your 905U L units and contains important information for inst
10. reducing the amount of signal radiated above and below the horizontal plane Collinear antennas are generally used at a central site with more than one remote site or at a repeater site Collinear antennas are similar in appearance to dipole antennas however the antenna is longer Collinear antennas are supplied without cable and require additional coaxial cable You can use collinear antennas to gt Transmitter to compensate for the losses in long lengths of coaxial cable gt Receiver to increase receive sensitivity 905U L Wireless I O Page 17 of 40 Version 1 6 905U L Wireless I O Installation Manual e The following diagrams shows the recommended installation for collinear and dipole antennas im minimum Collinear antenna Weatherproof connectors e g 3M 23 tape etc Surge protector arrestor optional ELPRO Unit You must provide good ground connection to the mast unit and surge arrestor protector Earth Stake Z N You must install the aerial above all local obstructions 905U L Wireless I O Page 18 of 40 Version 1 6 905U L Wireless I O Installation Manual e Yagi antennas Yagi antennas are directional and have positive gain to the front of the antenna and negative gain in other directions You can use the gain to gt Compensate for coaxial cable loss for transmitter unit and gt Increase receive sensitivity for receiver units You should install Yagi antennas wit
11. the Quick Start Guide cannot use a repeater unit 905U L Wireless I O Page 15 of 40 Version 1 6 905U L Wireless I O Installation Manual e Installing and earthing antennas You must connect an antenna to each 905 module using the SMA connector at the top of the enclosure ELPRO recommends carefully taping the connections between the antenna and coaxial cable to prevent moisture ingress Moisture ingress in the coaxial cable is a common cause of radio system problem as it greatly increases the radio losses ELPRO recommends taping the connection with three layers of tape Layer Tape fi fom OO ie Vulcanising tape e g 3M 23 tape s Additional layer of PVC UV stabilized insulating tape The first tape layer lets you easily inspect the joint if required as you can easily remove the vulcanising seal Note You must effectively earth all masts for mast mounted antennas to avoid lightning surges We also recommend using a coaxial surge diverter for antennas mounted outside industrial plant environments If the antenna is not already shielded from lightning strike by an adjacent earthed structure you can provide shielding by installing a lightning rod above the antenna You should connect the antenna to the module using 50 ohm coaxial cable e g RG58 or RG213 terminated with a male coaxial connector The higher the antenna is mounted the greater the transmission range however as the length of coaxial cable increases
12. alling your units with other equipment Note If your network only contains one transmitter and receiver pair you should also read the 905U L QuickStart Guides This document contains the following sections Section Read this section if you want to Resetting factory defaults Reset your unit to the original factory default settings Linking transmitter and receiver units Link your units to work as a dedicated pair Safety information Understand important safety information related to your unit NOTE You must read this information before installing your unit Specifications Know technical information about your unit For more information see the next sections 905U L Wireless I O Page 6 of 40 Version 1 6 905U L Wireless I O Installation Manual e Installing your unit This section describes how to install your unit and contains the following sections Description For more information see 1 Read the safety Lets you understand important information safety information related to your unit NOTE You must read this information before installing your unit Safety information on page 4 2 Get to know the Understand the basic features Unit components and connections on page 8 unit features of your unit 3 Install the antenna Learn how to install an Installing the antenna on page 13 antenna with your unit 4 Install the power Learn how to install a power Installing the power sup
13. ard do not disconnect while circuit is live unless area is known to be non hazardous Transmitter 1 si 1 Watt Frequency Hopping Spread Spectrum FHSS Transmitter 902 928 MHz Actual frequency range depends on country Receiver unit Input output Number Additional information Digital outputs 3 Voltage free contacts rated at 250 VAC 1A 30VDC 1A i O ieameoormee o 16 bit resolution 0 1 accuracy single ended source output Power supply 1 9 30 VDC 0 25 Amp CSA certified Class 2 power supply For use in Class 1 Div 2 explosive areas the power supply must be approved for Class 1 Div 2 use WENN Explosion hazard do not disconnect while circuit is live unless area is known to be non hazardous High sensitivity FHSS UHF radio receiver 902 928 MHz Actual frequency range depends on country Sensitivity 110 dBm At PER 8 905U L Wireless I O Page 37 of 40 Version 1 6 905U L Wireless I O Installation Manual e Ancillary hardware reference information This section contains reference information about additional hardware components you may need for your unit RS232 serial cable You can connect the unit to a PC using an RS 232 serial cable to gt Transfer configuration information gt Perform factory and field testing The serial port is an 8 pin RJ 45 plug that communicates using standard RS 232 signals Signal information Value Baud rate 9600 ens E bits wih 1 stop bi ELPRO supplies a gree
14. ent of approximately 5mA to maintain reliable operation of driving relays Each digital input is connected between the appropriate Digital Input terminal and Ground Each digital input circuit includes a LED indicator that lights when the digital input is active i e when the input circuit is closed To activate the digital input the switching device resistance must be less than 200 ohms Connection Example method Voltage free contact Voltage free contact input Transistor input Active 0 5v signal device External Power Supply Note Use a solid state relay if the voltage range is not suitable Voltage Range is low 2V max high 4V min 905U L Wireless I O Page 23 of 40 Version 1 6 905U L Wireless I O Installation Manual e Relay outputs The 905U L R module provides three normally open voltage free relay contacts rated at 250VAC 30VDC 1A You can use these outputs to directly control low powered equipment or power larger relays for higher powered equipment For inductive loads ELPRO recommends DC relays use flyback diodes across the external circuit to prevent arcing across the relay contacts Max 30VDC AC relays use capacitors e g 10nf 250V to prevent arcing across the relay contacts AC Y Load Max 250VAC 1A VY You can individually configure digital outputs to turn off if no command message is received by the output for a certain period This feature provides
15. f and exclusive of all other warranties This warranty does not indemnify the purchaser of products for any consequential claim for damages or loss of operations or profits and ELPRO is not liable for any consequential damages or loss of operations or profits resulting from the use of these products ELPRO is not liable for damages losses costs injury or harm incurred as a consequence of any representations warranties or conditions made by ELPRO or its representatives or by any other party except as expressed solely in this document 905U L Wireless I O Page 2 of 40 Version 1 6 905U L Wireless I O Installation Manual Contents Contents 3 PODU 9 GE NE EN NERE EE EN EN EN 5 TG 6 Installing your unit 7 WARREN area 8 Vi ceci 8 POR aiuola 11 ocz 13 TT A PR RR RR OR TT cui ET P A E TT 13 FUNN NA 15 Feste HSE EE TE SE EEE IA ET S 16 Dipole ANG collin ar AMS ida iii talia kaknte utd arazzi 17 DENN 17 Se En EEE EE EN en 17 h RIA NERE 19 Mauno me ponor SUD ee 21 Inputs and outputs 22 Ceci 23 E REA 24 ET EG Uii EE RI E A RR ZA 25 iL PRIA 26 ego RR EIA 29 CORRI aa iii 30 I ARR RI RIA SII vvs 31 Installing and configuring the unit 33 Tres ea REE RIEN RITA 34 LOI EE enna A TEN 35 ET RE EEE ER ER 36 Unit specifications 37 Tiuccia 37 FU 37 Ancillary hardware reference EEE 38 OE RR EIA RIA 38 Index 39 905U L Wireless I O Page 3 of 40 Version 1 6 905U L Wireless I O Installation Manual e T
16. h the central beam horizontal and pointed directly in the transmission direction to benefit from the antenna gain Note Yagi antennas usually have a drain hole on the folded element You should position the drain hole at the bottom when installing the antenna You can install Yagi antennas gt Vertically polarized with the elements in a vertical plane or gt Horizontally polarized with the elements in a horizontal plane The following table shows the recommended installation mode for different situations If your installation has ELPRO recommends using Two stations both using Yagi antennas e Horizontal polarization for the stations Two or more stations communicating with Vertical polarization for the stations and a common station e Dipole or collinear i e non directional antenna for the central station 905U L Wireless I O Page 19 of 40 Version 1 6 905U L Wireless I O Installation Manual e The following diagrams shows the recommended installation for collinear and dipole antennas Protected area approximately 45 degrees to vertical Antenna installed with drain holes down Coax feed looped at connection ELPRO Unit 905U L Wireless I O Page 20 of 40 Version 1 6 905U L Wireless I O Installation Manual e Installing the power supply The unit works with a 9 30 VDC 0 6 Amp CSA certified Class 2 power supply For use in Class 1 Div 2 explosive areas the power supply mu
17. he factory default configuration Signals sent over radio 905U L T Transmitter Sends 905U L R Receiver RECTO IE Digital Input 1 Other signals 905U L T Transmitter 905U L R Receiver Thermocouple Input Not used Communication Failure Comes on if no messages from 905U LT Setpoint Output Local indication l 9 System OK On if system OK System OK On if system OK 905U L Wireless I O Page 35 of 40 Version 1 6 905U L Wireless I O Installation Manual Testing your units We recommend you bench test the complete system before installing a new system Configuration problems are easier to identify and fix when the units are next to each other The following table describes common problems and recommended solutions If your installation has You should check ELPRO recommends Poor radio channel e The antenna installation e Higher performance antennas communications e For radio interference on the if the path is too long e TX LED flashes but no RX LED same channel e Higher mounting points to e Output LEDs flash quickly e The radio path is adequate overcome obstructions e Using an intermediate unit as a repeater and 30VDC for 35 mA max e Module configuration e Your module configuration may be invalid Re load or restore factory default configuration TX LED flashes but no RX LED e Ensure the 905U L R is set e Register the receiver with the bench testing to the same country and transmitte
18. his page intentionally left blank 905U L Wireless I O Page 4 of 40 Version 1 6 905U L Wireless I O Installation Manual e Safety information Thank you for selecting the 905U L for your telemetry needs We trust it will give you many years of valuable service To ensure your 905U L enjoys a long life double check ALL your connections with the Installation Guide before powering on the module NANNING Incorrect termination of supply wires may cause internal damage and will void warranty Exposure to RF energy is an important safety consideration The FCC has adopted a safety standard for human exposure to radio frequency electromagnetic energy emitted by FCC regulated equipment as a result of its actions in Docket 93 62 and OET Bulletin 65 Edition 97 01 FCC Notice when used in USA 905U Wireless I O Module Part Additional information This device has been tested and found to comply with the limits for a Class B digital device pursuant to Part15 of the FCC rules Code of Federal Regulations 47CFR Part 15 Operation is subject to the condition that this device does not cause harmful interference This device has been type accepted for operation by the FCC in accordance with Part90 of the FCC rules 47CFR Part 90 See the label on the unit for the specific FCC ID and any other certification designations Industry Canada 905U Wireless I O Module RSS 119 This device has been type accepted for operation by Industry Canada
19. l connections 11 relay OU PU S 24 reliable path i 15 rope dae 15 reverse voltage i 26 Ea RR RE OE 26 Pre 38 KOLN EE EEE 9 changing POSITION 9 setpoint levels 9 SE LA EN 38 senal CADIE EEE 38 setpoint thermocouple scsi 22 Seele FL Ea EE 9 aaO aa nidi 13 STE eee 13 Shielding ini 16 EE EE RE ENE 35 single ended input device 32 SMA connector rioni rana 16 0 16 1010 EN EE 36 Page 39 of 40 e SPECHICAHONS scrrnziraiiiiineiairat 37 ET 25 Surge diverter nnne 16 surge protection ii 16 Surge SUPppression eeren 16 switches electronic proximity 23 switches mechanical iii 23 taping EONNECIONS sito oe 16 HGS WG FERRO RR RR RE EE EEA 36 thermocouple 29 thermocouple setpoint enen 22 TAN SGUGCENS osiscacicennnnctevendennnn annctetdsduicnctivainnnedenbepaneeaenst 26 905U L Wireless I O Version 1 6 905U L Wireless I O Installation Manual transmitter COMO ia 8 Font panie moore 9 terminal connections roeren reenen 8 UV stabilized tape 16 vertical polarizatioN i 19 voltage free contact ii 23 vulcanising APG pcs ilaria 16 watchdog alarm i 24 L OE 13 VLG IO EEE
20. le configuration is the gain of the antenna in dBi less the loss in the coaxial cable in dB For example an SG900 6 antenna with a CC20 900 cable has a net gain of 2dB i e 8 dB 6 dB at 900 MHz The 905U L R module has no limitation on antenna gain as this module does not incorporate a radio transmitter The following table details the gains of some typical antennas Antenna CET el J Dipole with integral 3m cable Ce Dipole without cable 5dBi Collinear 3dBd 8dBi Collinear 6dBd Ea 3 element Yagi 6 element Yagi The following table details losses for typical cables Cable Loss dB per 10m at 900 MHz Rose 5 moms fes 905U L Wireless I O Page 14 of 40 Version 1 6 905U L Wireless I O Installation Manual e Radio transmission distances The unit will operate reliably over large distances depending on the gt Antenna type gt Antenna location gt Amountof radio interference and gt Radio path obstructions e g hills or trees Typical reliable distances are Area Distance Additional information USA Canada 6dB net gain antenna configuration permitted 4W Equivalent RF power permitted Australia NZ Unity gain antenna configuration 1W Equivalent RF power permitted To achieve these distance you must elevate at least one site on a hill or transmission tower Modules will operate reliably with some radio path obstruction however obstructions also reduce the reliable dista
21. n configuration cable wired to the following pin out Note The following pin out information is for reference only RJ 45 Required Signal name Normal colour DB9 a arona eren wne O E pae camerosie ore 1 a paia Temina ener Orange We 4 v Senacommon ove 5 5 v esse Data trom moderny we Wie 2 5 v anemia io ogem _ range gt 7 owes Ermini e fe Request seni em 7 905U L Wireless I O Page 38 of 40 Version 1 6 e Index 2 wire tranSOAUcer i 27 4 wire transducer nnee nr reenen 27 AOTEA EE 24 active pulse device en See active signal device reenn 23 analog NPU s erenneren 26 analog QUTput 31 AIMCO EEE aan aialsdumbbnbuiiee 17 compatible cables 13 1510 1 ENE EE 17 INSIAIING ritiri 15 DORIA ini ie 19 supported antennas nenene 13 NG PORRE O EE 24 bench testing i 36 cable ARR 14 cables for antennas i 13 supported cables 13 CFR EL ica 13 coaxial surge diverter nene 16 configuration CETAUIT ACIO Yeniar 35 user defined customized 35 COMMOUNING A E reina 35 connections E I 8 1 0 EEE PE E EAT E E erent se 16 current SINK QUTput i 28 current source QUIPput
22. nce Note You must test all obstructed paths to check the reliability of the path You can achieve maximum transmission distances if the radio path has line of sight For example raising antennas above Intermediate obstructions including hills trees etc Obstructions reduce the range however they may not prevent a reliable path The closer the obstruction is to the antenna the greater the blocking effect For example a group of trees around the antenna is a larger obstruction than a group of trees further away from the antenna You can achieve longer distances by mounting one antenna on topofa hill Note Due to the earth s curvature you must elevate antennas higher than the ground level between the antennas for longer paths greater than 3 miles 5 km The unit can tolerate larger amounts of obstructions for shorter distances For very short distances you can also mount the antennas inside buildings If two 905U modules cannot communicate reliably you can use a third 905U module as a repeater to receive and re transmit messages This module may also have input output I O signals connected to it and form part of the I O network Note 1 ELPRO recommends using the 905U G module as a repeater unit between 905U L T and 905U L R modules 2 To use a repeater unit the 905U L modules and the repeater module must be configured using the supplied configuration software The factory default configuration described in
23. nce RFI Note You should only connect one end of the cable shield to Earth To connect an analog signal from a PLC or DCS output to an analog input on the 905U L T you must carefully check the internal circuit of the output as different devices use different ways to create an analog signal 905U L Wireless I O Page 26 of 40 Version 1 6 905U L Wireless I O Installation Manual The following diagrams illustrate different connection methods Analog Example signal source 2 wire transducer 4 wire transducer Note Analog input must be within 27V of Ground If your terminal voltage exceeds this you must use a loop isolator Current source output Current Source Output Note 1 Analog input must be within 27V of Ground If your terminal voltage exceeds this you must use a loop isolator 2 Ground is connected to ground earth If you cannot ground the PLC COM you must use a loop isolator 905U L Wireless I O Page 27 of 40 Version 1 6 e 905U L Wireless I O Installation Manual Analog Example signal source Current sink output Current Sink Output Note 1 Ground is connected internally to Earth If you cannot ground the PLC COM you must use a loop isolator 905U L Wireless I O Page 28 of 40 Version 1 6 905U L Wireless I O Installation Manual e Thermocouple input The 905U L T provides one input suitable for connection to a thermocouple or a millivolt level signal
24. on see Installing the unit Describes how to physically install your Installing the unit on page 34 unit Configuring your unit Describes the different ways to Configuring your units on page 35 configure your unit Testing your unit Describes ELPRO s recommendations Testing your units on page 86 for testing your unit For more information see the next sections 905U L Wireless I O Page 33 of 40 Version 1 6 905U L Wireless I O Installation Manual e Installing the unit To install the unit 1 Connect signals to the supplied terminals 2 Connectthe radio antenna 3 Install DIN rail to mount the module 4 Clip the module to the DIN rail You can now configure your unit For more information Configuring your units on page 35 905U L Wireless I O Page 34 of 40 Version 1 6 905U L Wireless I O Installation Manual e Configuring your units You can configure your network using gt Default factory configuration that lets you easily setup your network as a simple send recelve or gt User defined customized configuration that lets you set specific information about your network and allows communication with other ELPRO 905 series devices For more information on setting a user defined customised configuration see the User Manual For more information on setting the factory default configuration refer to the Quick Start Guide included with your module The following table details t
25. p of unit RS232 configuration port Rotary switch for set point settings NOTE To avoid damaging the rotary switch use a screwdriver to change the position The rotary switch controls the setpoint levels on the Analog and Thermocouple inputs Page 9 of 40 905U L Wireless I O Version 1 6 905U L Wireless I O Installation Manual e The LEDs on the front panel indicate the unit status LED Status Indicates CE CT Input LEDS i e D1 D2 SP AZ light when the corresponding input is active Digital Input 1 is active Low Digital Input 2 is active To ve fe anos semo sem fa Taro pain OOOO All LEDs medium flash Medium speed flash 1 6HZ indicates the module is halfway through the configuration process Medium flash also happens when you set the rotary switch to position 0 when powering on the unit 905U L Wireless I O Page 10 of 40 Version 1 6 Receiver unit 905U L Wireless I O Installation Manual Your 905U L R unit has the following components and terminal connections POWER SUPPLY Max 30VDC 500mA For inductive load use surge diodes ANALOG OUTPUT Max analog load 900 ohm POWER SUPPLY 9 30 VDC 250mA 12V 125mA 24V NOT USED NOT USED DO contacts are rated at 1A 250VAC For good engineering practice use a surge diode for DC loads and a surge capacitor 10nF 250V for AC loads 905U L Wireless I O Version 1 6 Page 11 of 40
26. ply on page 21 supply supply for your unit 5 Install the units Learn how to install your unit Installing the unit on page 34 6 Linking and Learn how to link and Configuring your units on page 35 configuring the unit configure your units to transmit and receive information 7 Test the unit Understand the principles for Testing your units on page 36 testing your units Note To ensure internal surge protection works correctly you must earth each unit using the Earth terminal For more information see the next sections 905U L Wireless I O Page 7 of 40 Version 1 6 905U L Wireless I O Installation Manual Unit components and connections This section shows the components and terminal connections for the transmitter and receiver units Transmitter unit The 905U L T transmitter unit has the following components and terminal connections Earth Wire Lug underneath Unit THERMOCOUPLE fm COMMON dj SYSTEM OK SP STATUS Coin CokMON S00m Thermo couple type J Kor T Forinductye load orm signal use surge dio des Loop powered sensor shown Externally powered sensors are also suitable Dl s suitable forvolt free contacts or NFN transistor devices 9 30 DC S00mA ie 12 200mA 20 905U L Wireless I O Page 8 of 40 Version 1 6 905U L Wireless I O Installation Manual e The front panel contains the following components SMA antenna connector at to
27. r Refer to the Quick frequency band as the Start Guide 905U L T RX LED Flashes but no outputs For a user defined e Check the configuration and change customized configuration re program the modules check the configuration For default configuration e Repeat the procedure to check the receiver is register the receiver with the registered with the transmitter transmitter For support for other testing issues please contact ELPRO 905U L Wireless I O Page 36 of 40 Version 1 6 905U L Wireless I O Installation Manual e Unit specifications This section details the specifications for each unit Transmitter unit Input output Number Additional information Digital inputs Dry contact digital inputs slow pulsed at 10Hz All inputs are suitable for voltage free contacts e g mechanical switches or NPN transistor devices e g electronic proximity switches NOTE PNP transistor device inputs are NOT suitable Status outputs 2 Separate System OK and Setpoint Status Analog inputs differential input 16 bit resolution 0 1 accuracy 10 ohm gt impedance Thermocouple inputs J K or T type thermocouple with on board cold junction compensation Cold junction compensation accuracy 1 over ambient temp range 40 to 70 C Power supply 9 30 VDC 0 6 Amp CSA certified Class 2 power supply For use in Class 1 Div 2 explosive areas the power supply must be approved for Class 1 Div 2 use WENA Explosion haz
28. so do cable losses For use on unlicensed frequency channels there are several types of antenna suitable for use If you mount antennas on elevated masts you should effectively earth the masts to avoid lightening surges The 905U L radios are fitted with surge protection Note For high lightening risk areas ELPRO recommends additional surge suppression devices If the antenna is not already shielded from lightening strike by an adjacent earthed structure you can install a lightening rod to provide shielding 905U L Wireless I O Page 16 of 40 Version 1 6 905U L Wireless I O Installation Manual e Dipole and collinear antennas This section contains important information for using dipole and collinear antennas For more Information see the next sections Dipole antennas Unity gain dipole antennas are commonly used on unlicensed channels The dipole antenna does not provide any gain so the power transmitted from the antenna is the same as the power out of the module A dipole antenna that comes supplied with integral 15 ft cable does not require additional coaxial cable You should mount dipole antennas vertically preferably no less than 1 metre away from a wall or mast for maximum performance Collinear antennas Collinear antennas transmit the same amount of radio power in all directions horizontally and are easy to install and use They provide gain by compressing the radiated signal to a flattened disc shape and
29. ss I O Page 30 of 40 Version 1 6 905U L Wireless I O Installation Manual e n Analog output The 905U L R module provides a 4 20 mA DC analog output for connecting to instrument indicators to display remote analog measurements The analog output is a current source provided from an internally generated 24V loop supply When connecting to an external device e g electronic indicator recorder PLC DCS input etc by connecting the output between the Analog Output terminal and the COM terminal Note Zener protection of analog outputs provides protection against short periods of over voltage however longer periods may result in module damage You can also individually configure analog outputs to turn off i e 0 mA if no command message is received to the output for a certain period The following diagrams illustrate different connection methods Connection Example method Loop powered device Analog Output Floating input device Device 905U L Wireless I O Page 31 of 40 Version 1 6 e 905U L Wireless I O Installation Manual Connection Example method To single ended input device Device 905U L Wireless I O Page 32 of 40 Version 1 6 905U L Wireless I O Installation Manual e Installing and configuring the unit This section describes how to install and configure your unit and contains the following sections Section Description For more informati
30. st be approved for Class 1 Div 2 use Do not disconnect while circuit is live unless area is known to be non hazardous The following table shows the power supply requirements Power supply 905U L T 905U L R The power supply can be a floating supply or negatively grounded The transmitter provides a 24V DC regulated supply for analog loop power The supply is rated at 35 mA and should ONLY be used for powering analog loops To install the power supply 1 Connectthe positive lead to Power Supply Input 2 Connectthe negative lead to Ground Note To ensure internal surge protection works correctly you must earth each unit using the Earth terminal You should connect the module to the same ground earth point as the antenna mounting to avoid differences in earth potential during voltage surges Do NOT connect the positive side of the supply to Earth 3 The following diagram illustrates the connection Power Supply Input Ground 905U L Wireless I O Page 21 of 40 Version 1 6 905U L Wireless I O Installation Manual e Inputs and outputs The units have the following inputs and outputs Input output 905U L T 905U L Description For more information see Digital inputs Suitable for Voltage free Digital inputs on contact NPN transistor 0 page 23 5V signal 250VAC 1A 30VDC 1A Relay outputs Important Information on page 24 Max 30VDC 500 mA Status outputs on Indicate module status page 25
31. unications Failure 905U L R CF Watchdog alarms active on digital outputs or analog outputs 905U L Wireless I O Page 25 of 40 Version 1 6 905U L Wireless I O Installation Manual e Analog input The 905U L T module provides one 0 20 mA DC analog input for connecting to instrument transducers e g level moisture pressure transducers etc Note The 905U L T module inputs measure down to OmA and can also be used for zero based signals e g 0 10 mA The analog input has a positive and negative terminal and can be placed at any point in the current loop providing neither input rises above the 24 volt Analog Loop Supply level Each input has a loop resistance of less than 250 ohms and zener diode protection is provided against over voltage and reverse voltage Note You may require additional protection in high voltage or noisy environments or for long wiring runs A 24VDC loop supply is available on the 905U L T module for powering the analog transducer loops In this situation connect the gt Analog loop between an Analog Input terminal and Ground gt Positive terminal i e Analog Input to the 24V Analog Loop Supply Externally powered loops may be connected by connecting the input between Analog Input and Analog Input Common mode voltage may be 0 5V to 27V ELPRO recommends using shielded cable for analog I O loops to minimize induced noise and Radio Frequency Interfere
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