GD900A User Instructions
Contents
1. The multiple ND Rail 350 meters connected to a GD900A transmitter will appear as a series of virtual transmitters in Darca and are treated as such by the receiver logger Each virtual transmitter will have its own serial number These virtual transmitter serial numbers run sequentially starting with the GD900A s serial number For example GD900A serial number 20001 ND350 address 1 virtual transmitter serial number 20001 ND350 address 2 virtual transmitter serial number 20002 ND350 address 3 virtual transmitter serial number 20003 ND350 address 4 virtual transmitter serial number 20004 etc After configuring the transmitter channels for the first NDRail350 in Darca s Squirrel Channel to Transmitter Channel Assignments window you can move to the next connected meter in the list by clicking Next V Tx Next virtual transmitter The next meter can then be configured in the same way To move back to the previous meter in the list use lt lt Prev V Tx previous virtual transmitter Configuring a virtual transmitter For Tx channels A to L select only the channel range from the drop down as shown in the screen shot and click on Set Channel DO NOT ATTEMPT to use the Edit EU Range box Channels D E and F are fixed O 1000A ensure the range type setting on the NDkail350 matches the range of the connected CT See operating manual Channel L monitors connection of the external power supply 0 not connected and 1 12V conne2. before removing the LCTXS jack If the unit is not intended for immediate use park the battery link So as to disconnect the internal battery See GDIOOA links page 4 Launch Darca and open the Squirrel Channel to Transmitter Channel Assignments window Before setting the Tx channels set the TX Interval r E Squirrel Channel to Transmitter Channel Assignments Help Refresh d Pr v Tu Nest Tu o gt Nest Transmitter gt gt Close Transmitter Cc Transmitter Tx 20001 Virtual Tx lof 6 Sensor On time fa Set Sensor On Time Total transmitter channels 12 Delete All Tx Chi User Preferred Tx Int 00 00 20 Set Log Int amp Preferred T Int Used transmitter Channels i Se t Delete Selected T Ts Interval Free transmitter Channels res ue 00 05 00 Set Tx Interval Battery Level Z E5 Auto Set All Channels Inter Device Type azo d Set Device Type Channel Current Squirrel Start Channel fi Update Channel Allocation Tx Chan Range Sq Chan Match A Jotage 0t0 50000 JIE Set Channel Delete Channel Edit EU Range Bo f oltage D0 to 5000 Set Channel Delete Channel Edit EU Range E Voltage 0 0 to 500 0 ka Set Channel Delete Channel Edit EU Range B D Curent 0 0 to 1000 04 Set Channel Delete Channel Edit EU Range Current 0 0 te 1000 04 7 Set Channel Delete Channel Edit EU Range Current 0 0 te 1000 04 8 Set
3. 36 hours charge to reach 80 capacity The TX is fully functional if the battery is discharged when external power is applied A charged battery can provide 24 hours standby should the AC supply fail Settings are not lost if the battery is fully discharged The battery is PCB mounted Should replacement be necessary the transmitter must be returned to Eltek or our approved distributor External power required is 12VDC regulated The preferred power supply is the type DSP10 12 This DIN rail mounting power supply is provided with screw down connections for ease of installation The max demand current from the external power supply is 50MA Page 5 of 12 Indicators and concealed push switch The push switch is located behind a small access hole located at the rear of the transmitter To activate the switch a small screwdriver or unfurled paper clip can be used Red LED cadence due to activation of the concealed push switch Activate LED cadence LCD switch for Tx disable 5 x fast flashes After 5 seconds displays OFF Tx enable when configured 5 seconds 1 continuous 5 After 5 seconds displays sensor sec flash information Test transmissions approximately 2 second Short flash at time No change every 5 sec for 2 minutes of transmission Red LED due to GD900A being configured or not configured GD900A condition GD900A not Blink every 8 Battery gauge configured seconds displayed only GD900A configured Short flash at tim
4. Channel Delete Channel Edit EU Range GJ Power Factor 1 00t01 00 3 Set Channel Delete Channel E H o Power Factor 1 00t01 00 v 10 Z Set Channel Delete Channel E 1 Power Factor 1 00to1 00 11 Z Set Channel Delete Channel fai a Pulse Count 0 to 65000 kwh i2 Set Channel Delete Channel Edit EU Range Jk TEU Range Pulse Count 0 to 65000 kvath 13 Set Channel Delete Channel Edit EU Range _ SEMI a a es S10 Page 10 of 12 GD9IO0A method of operation Sampling the meters The GD900A reads and stores the values from the NDRail350 meter s every 10 seconds It waits 1 second between reading each connected meter 17 sets of values per meter are stored and a rolling average is kept To check the system is operating correctly you can verify that this is happening by watching the Cmd light on the front of the NDkails350 meters Transmitting the data At each transmission the GD900A transmits the average of the 17 values for voltage current and power factor The actual transmission time of the virtual transmitters begins at arandom point of time within the transmission interval The virtual transmitters 1 through 6 or as many are configured will transmit in order each transmission 1 second apart after the transmission time of the first virtual transmitter The default TX interval is preset to 5 minutes but can be altered as required A note about Virtual Transmitters For ease of use
5. Eltek TU1043 Genli GD900A Energy monitor multi drop NDRail350 transmitter user instructions System configuration diagram NDkail350 GD900A For 1 x three phase load Maximum of 6 x ND350V can be used with 1 x GDIOOA Page 1 of 12 Introduction The GD900A is part of the Eltek Genll family of transmitters The GD900A can be used with up to six parallel connected NDkail350 energy monitors and appropriate current transformers providing comprehensive monitoring and patterns of use of multiple three phase supplies The system is ideal for retro fit energy monitoring The GD900A can be used alongside all other Genll transmitter types See Eltek brochure Telemetry Energy Monitoring on the Eltek website www eltekdataloggers co uk literature shtml The system comprises GD900A transmitter Up to 6 NDkRail350 monitors 1 x three phase load meter NDMeter CTs up to 18 CTs can be used per GD900A DSP10 12 DIN rail mounting power supply to power the GD900A All components can be supplied by Eltek The GD900A has an input for 6 x NDRail350 energy monitors Modbus RS485 Each NDkRail350 has an input for 1 x three phase load 3 x CT AC333mV 3 xX AC230V nominal 1 x AC230 nominal to power the unit Parameters measured per NDRail350 are 3 x voltage 3 x current 3 x power factor cos kWh and kvarh Page 2 of 12 GD900A channel assignment Channels can be presented at the RX250AL together with those from any ot
6. _Retro fit_Current_ Sensors pdf SCT CT brochure http Awww ndmeter co uk files SCT Retro fit_ Current_Sensors pdf Eltek Specialist Data Loggers Eltek Ltd 35 Barton Road Haslingfield Cambridge CB23 1LL England Tel 44 0 1223 872111 Fax 44 0 1223 872521 email sales eltekdataloggers co uk http www eltekdataloggers co uk 101043 03 11 15 Page 12 of 12
7. cted Darca Plus can use these values to set an alarm should the AC supply fail Channel L is configurable per virtual transmitter To avoid transmitting unnecessary data configure Channel L for the first virtual transmitter only Device Type should always be set to A20 Page 11 of 12 GD9IOOA specification Frequency Default is 434 225Mhz other frequencies are available Tx compliance To EN300 220 1 TX output power 1OmW ERP Useable Tx interval typically 10 seconds to 15 minutes On air duration approximately 400mS Environment Indoor only rated IP40 Temperature Range 10 to 55 C compliant to EN300 220 1 operational 30 to 60 C Humidity 95 non condensing Size 85mm x 78mm x 42mm excluding 75mm antenna Weight 250g Connection strip 8 x miniature pitch rising cage connector included Antenna Supplied compressed spring L 75mm Gain 3db Antenna connector SMA Fixing WBG wall fixing bracket optional Battery type PCB mounted 6V 0 17Ah Ni mH Battery endurance typically gt 24 hours if battery fully charged Charging time typically 36 hours from discharged to 80 capacity Max lead length to ND Rail350V screened twisted pair lt 20M NDRail350 support information Brochure http www ndmeter co uk files ND_ 350V_Retro Fit_ Meter_Brochure pdf User manual http www ndmeter co uk files ND_Powerkail350_ Manual pdf Installation manual packed with product SCL CT brochure http www ndmeter co uk files SCL
8. e of A transmission occurs at a random time See Display below a transmission within the set TX interval LCD The LCD includes a battery condition gauge active at all times wap Battery gauge will flash if battery discharge imminent Only configured channels are displayed The LCD scrolls through the configured channel values If channels A K are configured but the NDkail350 is not connected or communications have failed the display will read OPEN If channel L is configured this display will read O if no external supply is connected or 1 if external 12VDC is connected Note If the GD9OOA is to be stored or will not be connected to a charging source for more than 48 hours the GB9OA should be disabled put into hibernate mode i e TX disable mode to prevent total battery drain and possible loss of settings Press the concealed push switch for 5 seconds The LCD will now read GFF Page 6 of 12 Connecting the GD900A NDRail350 CTs and TDK DSP 10 12 power supply Red The GD900A is supplied with Twist a 1M tail for connection to NDkail350 and TDK DSP10 12 power supply Black 10mm Preferred power supply is the DIN rail mount TDK DSP10 12 NDkail350 NDkail350 Addr Addr 2 Black Tee e e ee cee E ree E ee es ee ee ee E ES ee E ee ee ee ee e a GD900A Top panel DIN Rail mounting width 105mm Isolated serial comms CT1 cT26 Cree Current inputs For single amp three pha
9. her Genll transmitter and can be reordered during TX Setup or when configuring the RX250AL Channels can only be renamed when configuring the RX250AL with Darca software The GD900A assumes the identity of up to 6 virtual transmitters each of which represents a connected NDkail350 Each virtual transmitter has its own serial number The channels of a virtual transmitter are labelled A through L RX250AL channels are numbered 1 through 247 A fully loaded GD900A with 6 x NDRail350s connected can occupy 72 channels of the RX250AL Transmitter channels for an individual NDRail350 virtual transmitter Ext power to GD900A Page 3 of 12 Use of the GD900 with the RC250 The GD900 functions as up to 6 transmitters with consecutive serial numbers The RC250 can only communicate with the first transmitter in the sequence The first serial number can be altered using the TxSetup program Thus the RC250 can be configured to receive data from the 6 consecutive virtual transmitters by changing the first serial number using TxSetup and configuring the RC250 one transmitter at a time For example if the GD900 serial number is 22001 it also has T 22002 22003 22004 22005 and 22006 internally To configure the RC250 using the RXConfig software 1 First configure the RC250 with the GD900 set to serial number 22001 to program this serial number 2 Change the GD900 to serial number 22002 using TxSetup 3 Configure the RC250 using
10. ress R B until the required value is set To move to the next setting Press Ea until the next page in the list is displayed Parameters are set in the following order Ct Un PLr PLt Pto Hr br Addr trUE Auto Storing current voltage pulse pulse pulse hours baud meter voltage CT auto store output ontime test run rate address input rotation setup rate mode mode i 20 SELLO settist To close 100 19200 meter s programming 150 address to Scroll to Storing 400 1 second and wait until the 800 meter s word Storing address to disappears The The CT range can be ZIG display will revert selected from this list All ranges are recorded with one decimal place resolution in the GDIOOA back to the previous parameter Page 9 of 12 GD900A configuration using Darca software Refer to the Quick start guide ref TU1008 supplied with the RX250AI or download from http www eltekdataloggers co uk literature shtm Connect the LCTX3 to the Comms socket To access the Comms connector remove the two screws securing the case bottom to reveal the Comms connector Note GD900A cannot be configured by the logger only Comms connector AS a precaution disconnect the external 12VDC power supply before inserting the LCTX3 jack into the comms socket The external 12VDC can now be connected When configuration is completed disconnect the external 12VDC power supply
11. se operation refer to NDRail350 operating manual refer next page Note Wire CT black to 11 and white to I1 etc Connect only CTs with the same range value Page 7 of 12 NDRail350 connections Vn te 1 S2 qJ fk Bee O Be bol f2 L N Vn V1 V2 V3 l4 11 12 I2 13 I3 3 Phase 3 or 4 wire Optional Neutral P1 P2 p ee ae Ci T q 2 BAB F amp F BIE fold 2 L N Vn V1 V2 V3 Mt We 124 12 13 13 3 Phase 3 wire 2 x CTs L1 bl oO oD tl A Vn V1 V2 V3 M Me 12 12 13 13 Single Phase To Load To Load To Load Ensure fuses are wired in as shown A suitable Din rail mounting fuse holder is type CSFL4U for mse lA Sx 20mm fuse not included and end plate type CSFLEPU Refer to Eltek Where applicable V1 4 V2 5 V3 6 can be linked to L 1 A fuse must be used see note above from L supply to L 1 Page 8 of 12 Configuring the ND Rail 350 communications settings for use with the GD900A Each NDkails50 meter connected to the GD900A must be configured with the correct baud rate and meter address for the system to function correctly The baud rate of each meter should be set to 19200 and the addresses of the connected meters should be set sequentially starting at 1 You can program the meters using the buttons on the front panel To enter programming mode V Press and hold pa and M together until the display shows Ct To change a setting value P
12. this serial number to program it 4 Repeat steps 2 and 3 for serial numbers 22003 22004 22005 and 22006 5 Change the GD900 serial number back to 22001 CTs that can be used with the NDRail350 all AC330mV output at range dia SCL8 5 43 X37 x 32 8mm SCL16 50 51 X45 x 27 16mm SCL16 100 oI X4 aX 27 16mm SCT 19 150 5 X53 X17 SCT32 400 O2 9X 02X21 SCT51 800 121X127 X32 Other SCT19 models available 5 10 15 20 30 50 70 and 100A refer Eltek Other SCT32 models available 70 100 150 200 250 300 400 and 600A refer Eltek Other SCT51 models available 600 1000A refer Eltek SCL can be operated at range x 1 21 continuously SCT can be operated at range x 1 31 continuously Important note CTs have a moulded arrow impressed on the case the CT must be mounted on the power cable So that the arrow points to the load CT wiring Black is positive White is negative Page 4 of 12 GD900A Links The transmitter contains a rechargeable battery to maintain the GD900A operational should the AC supply fail For despatch the battery is disconnected to prevent total discharge To connect the battery when received remove the two bottom cover retaining screws to reveal Shipping To commission The red link is installed aS shown Remove the red link and install as above Battery charging recovery and endurance The PCB mounted 150mAh 6V NiMh battery is charged at approximately 4mA A fully discharged battery requires
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