PROGRAMMING GUIDE LITTLE GENIUS PLUS support@elmeasure.com www.elmeasure.
Product & features at glance : This Manual is applicable for the Models: LG+AYXX A indicates display parameters & Y indicates nos of rows and may be replaced by any one digit number from 1 to 9. XX indicates software variants without any change in hardware construction and may be replaced by any two digit number from 00 to 99.Throughout this manual, the following methods are used to highlight important information: NOTE : Describes important considerations related to a device setup, feature or application.
Index 1. Features - 2 2. Unique Features - 2 3. Wiring Diagram - 4 4. Key Functions - 6 5. LED Indications - 6 6. Display of Parameters - 7 7. Entering Configuration (Setup) Mode - 9 8. Clearing Parameters - 19 9. Enabling and disabling of Auto scrolling - 20 10. Multifunction Factor - 20 11. Installation Procedure - 21 12. Communication Register Map - 23 13. Application - 25 14.
1. FEATURES l l l l l l l l l STAR (Wye)/ DELTA/1 Phase Programmable Universal Auxiliary (80 - 300 VAC / DC) supply PT ratio / CT ratio programmable including CT secondary True RMS measurement Active energy, positive energy accumulation & reverse Lock 'OLD' register to store the previously cleared energy value User configurable (Editable) password Simultaneous sampling of Volts & Amps Universal Voltage Input: 50 - 550 VAC (for UL 50-520 VAC) and Current Secondary (0.
Precautionary Measures to be taken while Wiring the Circuit: Turn OFF the power to the circuit, when wiring the circuit. Connecting or removing measurement cables while the power is turned ON is dangerous. Take special caution not to wire a current measurement circuit to the voltage input terminal or vice-versa. Strip the insulation cover of the measurement cable so that when it is wired to the input terminal, the conductive parts (bare wires) do not protrude from the terminal.
RS 485 S1 AR S2 S1 AY S2 S1 AB S2 VR VY LOAD RECEIVED N RS 485 S1 AR S2 S1 AY S2 S1 AB S2 VR VY VB N Fig. 1 Star Connection(3E) 3 Phase 4 Wire system A U X S2 S1 LOAD RECEIVED DELIVERED VB S2 S1 S2 S1 Fig. 2 Delta Connection (2E) 3 Phase 3 Wire system A U X S2 S1 DELIVERED LINE RY BN S2 S1 4 LINE R Y B N 3. WIRING DIAGRAM Note: Wiring should be in accordance with the National Electrical Code and/or the Canadian Electrical Code, Part I.
Note: For DC Aux Voltage, +/- ve can be connected anyway. Common Relay 2 Common Relay 1 RS 485 COM 2 1 Fig. 4 Digital output Connection diagram S1 AR S2 S1 AY S2 S1 AB S2 VR VY VB S2 S1 RS 485 A U X Fig.
4. KEY FUNCTIONS In SET (Programming) mode Key In RUN (Measurement) mode UP/Right To select the value and accept the value (it act as a Right key in programming mode) Up scroll pages to look at different parameters DOWN To edit the value/ system To scroll pages to type down -ward in edit look at different mode and scroll through parameters the parameters 5.
Meaning LED status I/O 1 - ON - Blink - ON Relay tripped (programmed parameter is out of range) Reserved Pulse LED Communication ON 6.
Meaning DISPLAY Power Factor Active Energy Received Load Hour On Hours/Time Power Factor R Phase/Y Phase/B Phase Clear VA - R Phase/Y Phase/B Phase Parity Identification number Conversions of alphabets used (W) WARNING : When using a modem interface between the host computer and any remote device(s), ensure that the host computer is not used to set the BAUD RATE parameter of any selected device outside the working range of the modem. Doing so will cause that meter to cease communicating.
7. ENTERING CONFIGURATION (SETUP) MODE Step Range/Options/ Comments Actions Display Reads 1 Press UP & DOWN keys together to enter SETUP Row 1: with first digit “0” blinking Row 2: (SETUP, CLEAR) Displayed. 2 Press UP key four times to accept the password. Row 1: (Clear) Defines the Row 2: Blank clearing option for Row 3: blank the meter. (throughout the setup) 3 Press DOWN Row 1: key to navigate Row 2: (Element) Press DOWN key to decrement the first digit to “9” sequentially come to digit “.
Step Actions Display Reads 4 Press UP key to select STAR/DELTA/ 1. PHASE 5 Press UP key to Row 1: selected accept STAR/ mode DELTA/1.PHASE Row 2: 6 Press DOWN Row 1: xxxx key to navigate (415.0 -default/ next parameter factory set) Row 2: (PT Primary) 7 Press UP key to set the PT primary value Range/Options/ Comments Row 1: Blinks (selected mode StAr/ dELt/1.Phase blinks) Row 2: For selection press down key Row 1: First digit blinking can be edited using DOWN key.
Step Actions 8 Press UP key to accept the edited value for first digit. Display Reads Range/Options/ Comments Row 1: Second Program Range for digit blinking, can PT Primary : be edited using 100V to 999kV DOWN key. Press UP key to accept the edited value. Continue the same method till fourth digit. Row 2: CAUTION : Before wiring, de-energize the PT secondary by opening the circuit or removing the secondary fuse. Do not short the PT secondary.
Step 9 Actions Press UP key Display Reads Row 1: Decimal point blinking. Can be set at appropriate location using DOWN key. Ascertain the correct scale (Kilo/ Mega/Giga) is selected. Kilo/ Mega/Giga is placed on the right hand side of the display by Letter K/M/G. Press UP key to accept the edited value. Row 2 : Range/Options/ Comments Eg: To set 11.
Step Actions Display Reads Range/Options/ Comments 10 Press DOWN key to go to the next parameter. Row 1: xxxx (415.0 -default/ factory set) Row 2: (PT Secondary). Follow the procedure as described in steps 7 to 9. Range: 50V to 550V If value set is above the limit, display returns to the maximum PT sec value. 11 Press DOWN key Row 1: xxxx (5.000-default/ factory set) Repeat steps 7 to 9 to change the settings. Row 2 : (CT Primary) Program Range for CT Primary 0.
Step Actions Display Reads Range/Options/ Comments 12 Press DOWN key Row 1: xxxx Range: 0.5A to 6A (5.000 -default/ factory set) Row 2: (CT Secondary). Repeat steps 7 to 9 13 Press DOWN key Row 1: Row 2: Revers Lock Reverse lock - blocks energy accumulation in case the CT polarity reverse Option : NO/YES 14 Press DOWN key Row 1: (Vector harmonics) Row 2: (Method of VA Selection). Arithmetic (Arth), Vector harmonics (UEC.H). Vector (UECt) can be selected using DOWN key.
Step Actions Display Reads Range/Options/ Comments 16 Press DOWN key Row 1: Row 2: Range : 0.000 to 999.9 Mega 17 Press DOWN key Row 1: Row 2: 2nd digital output parameter can be selected using UP & DOWN key. 18 Press DOWN key Row 1: Row 2: Range :0.000 to 999.9 Mega 19 Press DOWN key Row 1: Range: Row 2: 1to 180 seconds (digital output trip delay time, default/ factory set : 3.000sec 20 Press DOWN key Row 1: xxxx (9600 default/ factory set) Row 2: (baud rate) communication speed.
Step Actions Display Reads Range/Options/ Comments 21 Press DOWN key Row 1: Row 2: EUEn (even)/ odd(odd)/ no(no parity) Internal communication error check 22 Press DOWN key Row 1: Row 2: (device ID) Defines the (ID) communications identification number.1 to 247 23 Press DOWN key Row 1: Row 2: (Password user definable). CAUTION: memorize the Password. Use the same Password for next time. Instruments will reject other Passwords. Range: 1000-9999.
Step Actions Display Reads Range/Options/ Comments 24 Press DOWN key Row 1: Row 2: Energy value format i.e., the energy accumulated in the meter to be displayed in resolution (default) or counter format. 25 Press DOWN key Row 1: Row 2: Pulse width defined for pulse output occurrence (if POP option enabled) Range: 50 to 500 ms 26 Press DOWN key Row 1: Row 2: Energy Selection Option: Wh/VAh 27 Press DOWN key Row 1: "Y" blinking.
7.1 The List of parameters can be configured and the range is given below Sl.No. Parameter Default setup 1 Connection mode (ELEM) STAR STAR/ DELTA/ 1.Phase 2 PT Primary(PT.Prı) 415.0 100V- 999kV 3 PT Secondary (PT SEC) 415.0 50V - 550V 4 CT Primary(CT.Prı) 5.000 0.5A - 99kA 5 CT SECondary (CT SEC) 5.000 0.5A - 6A 6 VA selection (UA.SL) UEC.H (Vector harmonics) 7 Digital delay 3.000 1 to 180 seconds 8 Digital o/p 1 Parameter (d1.Pr) Digital 1 Threshold Limit (d1.
Sl.No. Parameter Default setup 11 1000 0.001 to 6 9999 × 10 12 Digital 2 Threshold Limit (d1.Hi) Baud rate (bAUd) Range 9600 2400 to 19.2k 13 Parity (Prty) Even Even/ Odd/ no 14 Device Id (dEV.Id) 1.000 1.000 to 247.0 15 Reverse lock(rEU.L) 16 Password (PWd) 1000 1000 to 9999 17 EnEr (Energy) rESL rESL /COUΠ 18 POP ON time (POP.t) 250.0 50 to 500 milliseconds 19 Energy Selection (E.SEL) no Wh Yes/no Wh / VAh 8.
9. Enabling and disabling of Auto scrolling: Enabling auto scrolling: Press UP key continuously for 5 seconds or until display shows EnbL Auto.Sc for upward scrolling. Press Down key continuously for 5 seconds or until display shows EnbL Auto.Sc for downward scrolling. Disabling auto scrolling: Press any key (UP/DOWN), display show dSbL Auto.Sc and returns to normal mode. 10.
11. Installation Procedure Connection Diagram: Connection Diagram for Little Genius Plus / Digital Output and RS 485 RS485 Note : Connections to the terminals located at the rear side of the unit is to be made by using preferably 12 to 2 2 14 SWG (2.6mm to 2.6mm ) industrial grade wire. Relay rating No contact SPST. 250VAC / 30VDC @ 2 Amps resistive.
Mounting : The front bezel of the basic model is molded plastic. Bezel dimensions is 96x96mm. Depth 55mm behind the bezel. Side Clamp VR VY VB AB Panel Cutout AR AY 92 mm N 92 mm Side Clamp Panel After Installation CAUTION : Use MCB to connect and disconnect the device for auxiliary and measurement circuit.
12. COMMUNICATION REGISTER MAP: This Communication map is for LG Plus. All the parameters declared in the communication map are either float or unsigned long and follows; Standard Baudrate Parity Stopbit Modbus Function : : : : : Modbus RTU protocol (Half Duplex) 2400 / 4800 / 9600 / 19200 Even / Odd / No 1/2 03 (Read holding register) Sl.No.
Sl.No.
13. APPLICATION It is a common phenomenon that the equipments/motors often break down in any industry due to various reasons. Typically, the reasons could be poor incoming power quality, improper/ floated earthing, Process defects, loose connections in current route, poor safety measures, unskilled operators, natural calamities (lightening, flood) etc., The damages due to natural calamities is very hard to control by human beings.
14. TECHNICAL SPECIFICATIONS Range Parameter Input voltage 4 Voltage inputs (VR, VY, VB, VN), Measuring Range: 50 to 520 VLL / 28 to 300 VLN Nominal @45 to 65 Hz Programmable Range: Primary 100V to 999 kV & Secondary 50V to 550VLL Burden External Fuse Rating 0.2VA Max.
Range Parameter Display Resolution 2/3 Row, 6 digits (10mm height) CT PT Ratio Max 2000 MVA Programmable Protection Class 3 Humidity 5% to 95% non condensing Pollution Degree 2 (As per IEC 61010) Altitude Below 2000 mts Insulation Double Insulation Ingress Protection IP 51 As per IEC 60529 ( As per IEC 61010-1) Operating Temperature -10OC to + 55OC (14OF - 131OF) Storage Temperature O O O O -25 C to +70 C (-13 F - 158 F) Measurement Category CAT lll ( As per IEC 61010) Wire Gauge (co
TROUBLESHOOTING Due to programming error, site conditions, some problems can cause the Meter malfunction. The fault symptoms and their remedial action for correction is given below. 1. If the display does not turn ON: a) Check that there is at least 80 volts available to the power supply (L and N connections) on the Aux supply terminals. If the above steps do not solve the problem, Contact ElMeasure or your local ElMeasure representative and report the problem and results of the test. 2.
WARRANTY AND REGISTRATION Every product of ElMeasure is warranted for 18 months from the date of invoice for the defects in materials and workmanship when products are used in normal specified conditions. The warranty is void to the product which has been damaged due to improper installation, improper handling, improper connections, neglect, misuse, accident, and abnormal conditions of operation and natural calamities or acts of god.
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