Table of Contents
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1.
Introduction ................................................................................... 4
2.
System principles of operation ....................................................... 5
2.1
Appropriate applications ................................................................... 5
2.2
Transmitter interval............................................................................ 5
3.
RC250 Receiver .............................................................................. 6
3.1
Packed items ..................................................................................... 6
3.2
RxConfig software ............................................................................. 6
3.3
Operation .......................................................................................... 6
3.4
Power Requirements ......................................................................... 6
3.5
Application ........................................................................................ 7
3.6
LED Indicator ..................................................................................... 7
3.7
RC250 programming leads ............................................................... 7
3.8
Top panel connections ..................................................................... 8
3.9
Specification ...................................................................................... 8
4.
Care and disposal of product ......................................................... 9
5.
Maintenance and calibration ....................................................... 10
5.1
Maintenance ................................................................................... 10
5.2
Calibration ....................................................................................... 10
6.
Note about RF performance......................................................... 11
7.
Accessories ................................................................................... 12
7.1
Probes and sensors ......................................................................... 12
7.2
Antenna .......................................................................................... 12
7.3
Wall bracket ..................................................................................... 12
7.4
Leads ............................................................................................... 12
7.5
Connectors ...................................................................................... 12
7.6
Weatherproof enclosure ................................................................. 12
7.7
AC Transducer ................................................................................. 12
7.8
Power supply ................................................................................... 12
7.9
Communications module ............................................................... 13
8.
Replacement accessories .............................................................. 14
8.1
Antenna .......................................................................................... 14
8.2
Battery ............................................................................................. 14
8.3
Connectors ...................................................................................... 14
8.4
Leads ............................................................................................... 14
8.5
TMET ............................................................................................... 14
8.6
Power supply ................................................................................... 15
Table Of Contents
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Summary of Contents for Eltek GenII RC250
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Page 1: Table Of Contents
Table Of Contents Introduction ................... 4 System principles of operation ............5 Appropriate applications ..............5 Transmitter interval................5 RC250 Receiver ................6 Packed items ..................6 RxConfig software ................6 Operation ..................6 Power Requirements ................. 6 Application ..................7 LED Indicator .................. - Page 2 Supported third party sensor products ........16 10. Repeater notes ................17 10.1 Power requirements ................ 17 10.2 Product Specification ............... 17 10.3 RSSI indicator (calibrated from serial number 7925 to current) ..21 10.4 Radio coverage survey ..............22 10.5 Preparing the transmitter and repeater for the survey ....
- Page 3 16. Pulse count and GenII telemetry ..........45 Declaration of Conformity ..............46...
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Page 4: Introduction
1. Introduction This manual is for users who have purchased an Eltek GenII system comprising Eltek standard transmitters, standard repeater(s) and an RC250 receiver together with the RxConfig or software. It assumes that the application is satisfied using this standard equipment and that a survey has been conducted to ensure that the radio range covers the site in question within the required margin of safety of performance. -
Page 5: System Principles Of Operation
2. System principles of operation 2.1 Appropriate applications The Eltek GenII wireless telemetry system is ideal for a wide variety of applications that involve the accurate monitoring of data in conditions where events are slow moving. Therefore, the system works well in applications such as measuring the environment in a building or following a process. -
Page 6: Rc250 Receiver
3.2 RxConfig software RxConfig can also be downloaded from: www.eltekdataloggers.co.uk When installed, RxConfig creates a folder “Eltek”. In this folder are the RC250 documents for details of Modbus over serial, etc. for Modbus limitations. The program allows the user to:- •... -
Page 7: Application
3.5 Application For users who wish to use the Eltek GenII series of transmitters with third party or proprietary software. The RC250 can also be used to interface GenII transmitters to: •... -
Page 8: Top Panel Connections
12VDC (6 way mini Din) (inner is -ve) 3.9 Specification Maximum no. Channels AC supply 100 to 250V AC (Use only Eltek power supply type MP12U) DC input 12VDC Maximum current <150mA Battery endurance Up to 72 hours Battery charge time Trickle - allow 72 hours to fully charge an exhausted battery. -
Page 9: Care And Disposal Of Product
Do not expose the transmitter to water, rain or spillage. It is not waterproof. For operation in these environments a secondary water/weatherproof enclosure is required and can be supplied by Eltek Do not abuse the transmitter by dropping, knocking or violent shaking. -
Page 10: Maintenance And Calibration
This service is chargeable. Transmitters with Lux or Lux and UV sensors are digital devices and can be checked against a known light source and calibrated meter. Alternatively they can be returned to Eltek for calibration. There is a charge for this service. -
Page 11: Note About Rf Performance
6. Note about RF performance 6.1.1 Improving Reception Radio waves travel best in open unobstructed spaces. Aerials work best high up in open spaces. Unfortunately, it is rarely possible to have both of these criteria met! However these two statements should be kept in mind when installing the radio system. -
Page 12: Accessories
Rugged outdoor (IP65) enclosure with built-in cradle for OD1 series most transmitter types. specify transmitter type and accessories required with order - if in doubt contact Eltek 7.7 AC Transducer AC100/240 transducer - provides an isolated contact closure when EL-CC powered. -
Page 13: Communications Module
100-250VAC to 9VDC approx.10W supply. Specify mains MP9U plug type with order (UK/Euro) DIN rail mounting AC to 12VDC power supply for GD90A DRA18-12 Wire-in 24/12V to 9V regulator 24REG9 7.9 Communications module RS485 interface (for RC250 units after serial no. 25194) SQ/RS485 "Wired socket"... -
Page 14: Replacement Accessories
8. Replacement accessories 8.1 Antenna UHFStub/SMA Stubby antenna for transmitters 434.225Mhz L=66mm Flexi antenna for receiver, repeater or transmitters UHFFlexi/SMA 434.225Mhz L= 165mm Flexi antenna on magnetic base with 2M lead with sma UHFFlexi/Mag/SMA connector 8.2 Battery BATCARR4 Battery carrier (4 x AA cells not included) BATCARR6 Battery carrier (6 x AA cells not included) Plug-in rechargeable 7.2V MiMh pack for RP250GD,... -
Page 15: Power Supply
8.6 Power supply AC to 12VDC power supply (For GD40A) MP12U/GD40A... -
Page 16: Supported Third Party Sensor Products
9. Supported third party sensor products Type Manufacturer Product name Eltek Product AC current Northern SCL / SCT GD90A, transducer (AC Design GD900A, 651 output) Squirrel AC current Northern GD40A transducer (DC Design output) Energy meter Northern NDRail310, GD90A, Design... -
Page 17: Repeater Notes
The red LED will stop flashing and the display will read OFF. 10.2 Product Specification AC supply: 100 to 250V AC (Use only Eltek power supply type MP12U) DC input: 12.5VDC Maximum current <70mA... - Page 18 SMA socket Antenna - standard: ¼ wave whip (shipped with product) Antenna - alternative: Indoor/outdoor dipole, lead length 5M standard, accessory from Eltek Ltd type LW-ANT/sma. The maximum recommended lead length is 10M. Transmitter spec: to European spec EN300-200 Temperature Range: -10 to +55ºC...
- Page 19 10.2.1 Basic system where there is one RP250GD only Do not repeat transmitters unnecessarily! Tx 1001 RC250 Repeater #1 Delay = 0 Tx 1002 10.2.2 A system where are there are two or more RP250GD Do not repeat transmitters unnecessarily! RC250 Tx 1001 Repeater #2...
- Page 20 10.2.3 For a system where multiple (tandem and radial pattern) RP250GD used: Do not repeat transmitters unnecessarily! Repeater #2 Repeater #1 Delay = 0 Delay = 0 Tx 1001 RC250 Tx 1002* Repeater #3 Tx 1003 Delay = 1 Tx 1004 •...
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Page 21: Rssi Indicator (Calibrated From Serial Number 7925 To Current)
10.3 RSSI indicator (calibrated from serial number 7925 to current) The 16 chevrons indicate the following Received Signal Strength Indication: At Risk Marginal Ideal (essential during survey) At Risk: Insufficient margin of safety to guarantee year-on-year performance Marginal: Depending on environmental factors, performance may be inhibited or inconsistent. -
Page 22: Radio Coverage Survey
10.4 Radio coverage survey Eltek have provided an online tutorial which illustrates how to perform a radio coverage survey. Please visit www.eltekdatareceivers.co.uk/surveytutorial. Overview Typically a system will consist of transmitters distributed across various floors and rooms of a building reporting to an RC250 receiver. Range can be extended by means of repeaters that provide both tandem and/or radial coverage patterns. - Page 23 >5m The Receiver should also be located clear of all other sources of radio interference. The following locations/materials will inhibit the performance of the system: Reinforced concrete Metal cladding Rooms that are constructed as Faraday cages Moving machinery that changes position e.g. fork lift trucks, cranes 10.4.1 Using an RP250GD/RP250GDS to detect interference Disconnect the antenna, and if no interference is present the RSSI bar on the unit's display should show 2 chevrons or less:...
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Page 24: Preparing The Transmitter And Repeater For The Survey
Should interference be detected and the origin cannot be found then advanced interference detection equipment will have to be used, e.g a radio frequency spectrum analyser. Refer to Eltek. Before installation a survey should be conducted. 10.5 Preparing the transmitter and repeater for the survey 10.5.1 Prepare the transmitter... - Page 25 positions located on it. Position the transmitter at the proposed Receiver location. Take the RP250GD/RP250GDS to the first proposed transmitter location. View the transmitter's serial number on the RP250GD/RP250GDS display. Check the signal strength is greater than 6 chevrons. If the strength is good, mark the survey map with a tick. Continue checking, ticking transmitters when the signal is good.
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Page 26: Using The Receiver Config Software
• Eltek RC250 Load the program on your PC – it will try to find an existing Eltek folder. To program the RC250 use the LC68 lead. Connect one end to the serial port of the PC and the other to the mini DIN socket situated on the top panel of the RC250. -
Page 27: Channel Set-Up Procedure
Start Meter / Load table with received data Stop Meter Edit Chan Click over a channel, click Edit Channel to edit. (Use to accept a transmitter not available for direct connection.) Clear Chan Click over a channel, click Clear Channel data data Set Nbr... -
Page 28: Columns In The Rx Configuration Panel Table
• Copy the configuration to the RC250 using the Set RX Button. * To gain access to the transmitter programming socket the bottom cover must be removed (2 x pozi-drive screws). Carefully remove the battery pack but do not disconnect it. The programming socket is a 3mm stereo jack socket that will now be accessible. - Page 29 Description ModBus slave device ID Base address of holding registers for the raw values Base address of holding registers for the range-scaled values Base address of holding registers for the scaling factors Base address of holding registers for the transmitter battery levels Base address of holding registers containing the transmitter counter Base address of holding registers containing the ages of each value.
- Page 30 11.4.1 Communications Example request to retrieve holding register 100 (set up to contain the raw value from channel 1) from node address 6: Slave Address Function Starting Address Hi Starting Address Lo No. of Registers Hi No. of Registers Lo CRC Hi CRC Lo Response from RC250:...
- Page 31 Raw Reg holding registers, other than pulse counts, contain values less than 65000. Numbers starting from 65441 (0xFFA1) are used to represent out of range or fault conditions. These numbers are: 65441 (0xFFA1) - Raw value is above maximum value of range 65442 (0xFFA2) - Raw value is below minimum value of range 65444 (0xFFA4) - Sensor is open circuit 65531 (0xFFFB) - No Data...
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Page 32: Help File Issues
The Edit RX Channel window is shown below: 11.4.3 Serial Data Both ModBus and RC250 Serial Interface protocols are implemented on an RS232 interface. The interface requires no configuration and will automatically respond appropriately to either protocol. It is preset to these settings: Baud Rate 19200 Data Bits... -
Page 33: Transmitter Connections
12. Transmitter connections The following transmitter type suffixes are used to indicate: • E – Eltek RHT10E RH/temperature probe (digital interface) (except GS42/44) 12.1 GS/GD13E 1 x External RH / temperature digital interface E for RHT10D J for E plus E EE08 12.2 GS/GD14E... -
Page 34: Gs41A
12.5 GS41A Use with a pyranometer: SKS1110 Connect green wire to “v”, connect red and blue wires to “-” CMP3 Connect red wire to “v”, connect black(screen) and blue wires to “-” The GS-41A can be powered from an external 9VDC (+/- 0.1V) supply or supplementary battery pack (type SP1118) and / or internal batteries. -
Page 35: Gd43E
12.7 GD43E GD-43E/J/JA Channel A Version E Ranges are 0-100mV / 1V / 10V / 0-20mA / 4-20mA Version JA Range -15mV to +15mV with scaling. C&D Use with Kipp and Zonen NRLite Net radiometer. NRLite connections: Connect wire to “ ” Connect black(screen) and blue wires to “-”... -
Page 36: Gs44/Gs44E/Gs44H
12.8 GS44/GS44E/GS44H Connector GS-44/44E provide four inputs, A B C and D. Each is a voltage or current input (v c -). is voltage input, is current input. If current is used, link to . is the -ve voltage or current input. GS-44 sensor supply output There is a... -
Page 37: Gs/Gd52
2 x pulse input transmitter. External power in Range 6V to 9V DC (regulated). Power supply is MP9U from Eltek. When external power is applied (and if greater than the internal battery voltage), the external power is used. If external power fails the internal batteries will... -
Page 38: Gd67
GD90A: For use with 1 x ND350 3 phase energy meter. GD900A: For use with up to 6 x ND350 3 phase energy meters. Modbus comms. 12.18 GD93A For use with Landis & Gyr T230 heatmeters. For other MBus applications refer to Eltek. -
Page 39: Specifications
13. Specifications 13.1 Common transmitter specification RF specification EN300-220 RF power 10mW Environment specification: Compliant to EN300-220 -10 to +55ºC Actual -30 to +65ºC Humidity 100% non condensing Environmental rating IP40 Dimensions (footprint) 78 x 41mm Battery endurance up to 5 years (interval set to 5 minutes) Transmission interval range (less for GL-70 and GS40 series) 1 sec to 4 hours... - Page 40 ±4% (0 to 100%RH) external temperature (RHT10E) -40 to 0.1ºC ±0.4ºC (+5 to +120ºC +40ºC) ±1.0ºC (-20 to +80ºC) GD14E external RH (RHT10E) As GS13E external temperature (RHT10E) As GS13E 2 x external thermistor temperature As GC04 GS21/GD 1 x external T or K type thermocouple -200 to 0.1ºC / ±0.3ºC...
- Page 41 0-100mV DC 0.02/0.03mV GS42 2 x external voltage or current ±0.06mV GS44 4 x external voltage or current 0-1V DC 0.25mV ±0.5mV GS44AVE As GS44 but with averaging function 0-10V DC 2.50mV ±5mV 0-20mA DC ~5uA 20uA 4-20mA DC 0.05% 0.1% GD43E 1 x external RH and temperature...
- Page 42 GD81 1 x built-in barometric pressure 800- 0.0122mBar +/-1% FSS 1100mBar /bit GD84 1 x built-in differential air pressure -250 to 0.1 Pa ±3Pascal +250 Pascal GD90A 1 x RS485 modbus input for Up to 12 NDRail350V energy meter values GD900A As GD90A but can connect to up to 6 NDRail350V meters...
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Page 43: Transmitter Product Revisions
14. Transmitter product revisions GS34 transmitters with a serial number greater than 13316 and GD34 transmitters with a serial number greater than 13773 will have a ‘state’ range option. When open circuit the channel will read 1 and for a short circuit it will read zero. -
Page 44: Thermocouple Isolation And Interference Issues
AC power supply must be a type which has extremely low AC leakage current (such as medical grade types). It is preferred that only the Eltek MP12U power supply is used. In case of doubt, contact Eltek. - Page 45 16. Pulse count and GenII telemetry The pulse count transmitters GC62 and GD67/GD68 employ the same measuring and transmission techniques. Transmitter At the transmitter pulses are counted continuously to a maximum of 65,535. When 65,535 is reached the counter is reset to zero and starts counting again.
- Page 46 Declaration of Conformity Manufacturer Eltek Ltd Haslingfield Cambridge CB23 1LL Description of Equipment RC250 Receiver I confirm that this instrument conforms to the requirements of the EMC Directive 89/336/EEC (amended 92/31/EEC) and carries a CE mark indicating conformity. Applied Standards Harmonised European Standard EN50081 part 1 and EN 50082 part1 for emission and immunity.
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