Elnet LTC 16 - User Manual 21.03.11
Contents
1. CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 1 3 Indication Leds In the front panel of the Elnet LTC located 16 indication Leds Each Led is marked according to the relay output number of the LTC When the LTC turns on one of its outputs the relevant Led will turn on accordingly to indicate which capacitor is on O EINet Power Factor Controller amp Electrical Powermeter Figure 1 3 Indication Leds CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 1 4 Test Capacitors Screen 1 From the Main Menu scroll to TECHINCAL and press Enter WOLTAGE CURRENT Hz POWER POWER FACTOR POWER LLIFL I Tr ENERGY METER TECHNICAL Figure 1 4 Access the Settings screen 2 The ENTER CODE screen appears SETTINGS ENTER TECH CODE HERE FSO T M 4 Figure 1 5 Enter Code screen 3 The password to activate the Test Relay screen is 789 4 Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER b CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel The TEST CAP screen will appear TEST CAP OFF OFF OFF OFF OFF2. LI ra dj Th foo Figure 1 6 Test Capacitors screen Use the navigation buttons to scroll force and release the relevant output When finished press Back to return to the main menu CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel CHAPTER 2 Power Factor Controller 2 1 General Information ElNet LTC is a combined Energy amp Power Factor Controller it enables measurement of power factor and power factor correction by using ON OFF switching control of capacitors It also enables automatic identification of capacitors size and its connection in various methods Based on the above mentioned measurements E Net LIC corrects the power factor by switching the capacitors In addition the Elnet LTC can also measure Energy Power Quality all the features of Elnet LT energy amp power meter For detailed information of how to operate and use Elnet LT features please check the attached Elnet LT manual In order to access the power factor menus of Elnet LTC 1 Inthe Main Menu select POWER POWER FACTOR and press Enter WOLTAGE CURRENT Hz POWER POWER FACTOR POWER LLIFL I Tr ENERGY METER TECHNICAL Figure 2 1 Main Menu 10 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel t 2 The POWER POW
3. CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel LTC A A l O EINet Power Factor Controller amp Electrical Powermeter Elnet LTC CE Power Factor Controller CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel Table of Contents CHAPTER I Electrical Wiring sssccscscsssscsssssscsssscssceess 3 1 1 Electrical Connections 2222200000000000000000000000000000000000000 3 1 2 Electrical Wiring Diagram sscccccccccssssssssssees 5 1 3 Indication ECOS czo okaze torsione 7 1 4 Test Capacitors Screen sssoooooooooooooooo0000000000000000000 8 CHAPTER 2 Power Factor Controller cccccccccccssccssccccsssseeeees 10 2 1 General INTOPMIAUION GiG biGc wi 10 2 2 Controller s Data SCECC Wis ze Ric dice 12 CHAPTER 3 Power Factor Controller Settings ccccccccccssssssseees 13 3 1 Transformers RAGO irc AGR AEO AGA 13 3 2 MMAR CUO st ES EEC 16 3 3 NOG NMALSEIA OSA PE Sida 21 3 4 Working IR ANN O R A R OE ROAR SE 23 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel CHAPTER 1 Electrical Wiring 1 1 Electrical connections All Connections except those to the CT core of the E Net LTC Power Factor Contr
4. 5 n order to set the Current Transformers ratio scroll to Current Trans and press Enter TRANSFORMER RATIO CURRENT TRANS VOLTAGE TRANS rw A Figure 3 3 Transformer Ratio 6 The Current Transformer screen appears CURRENT TRANS LOW CURRENT 54 SET HIGH CURRENT ooooo0S f l ql pl Figure 3 4 Changing Transformer Ratio 7 Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER _15 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 8 In order to set the Voltage Transformers ratio scroll to Voltage Trans and press Enter 9 Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 3 2 Vital Setting In order to define the Vital Setting you must access the PF CONTROLLER screen by repeating steps from chapter 2 paragraphs 1 2 3 l Once the PF CONTROLLER screen appears scroll to Vital Setting and press Enter The Vital Setting screen appears VITAL SETTING POWER FACTOR 0 92 CAPACITORS VALUE CAPACITORS MEASURE TOTAL RELAY 15 amp Y Figure 3 5 Vital Setting screen 16 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 3 2 1 S
5. Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 1 2 Electrical Wiring Diagrams Notice The distance between the external current transformer and the Elnet will not exceed 5m Optional external power supply VDCWAC Hout 2 ITB outi R5485 out Ifo Figure 1 1 Three Phase Electrical wiring diagram 5 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel Pin Designation Description Remarks VI Line 1 Voltage Supply Use 6Amp fuse to protect the line V2 Line 2 Voltage Supply Use 6Amp fuse to protect the line V3 Line 3 Voltage Supply Use 6Amp fuse to protect the line N Neutral Measurement neutral Line I1 From external Current Note the correct Transformer on Linel direction to insert the lead I2 From external Current Note the correct Transformer on Line2 direction to insert the lead I3 From external Current Note the correct Transformer on Line3 direction to insert the lead Power 110 280 VAC OR 90 250 VDC Np Neutral Neutral of external power supply Digital Out Relay outputs for switching Recommended 1 16 the capacitor s contactors operational load up Common Common connector for to 5 Amp feeding voltage neutral to all the contact relay outputs RS485 RS485 Comm Line RS485 RS485 Comm Line Figure 1 2 Connections on the back of the device _6
6. MAX THD V setting Enables disconnection of all the capacitors whenever the actual THD V value exceeds the value which was defined by the user When THD V 0 this option is disabled In order to change the Max THD V scroll to Max THD V line and press Enter The Max THD V screen appears Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 3 4 3 MIN CURRENT setting Enables defining value for minimal current under which power factor correction 1s not required the value entered as of the maximum current at the secondary current transformer In order to change the Min Current scroll to Min Current line and press Enter Min Current screen appears Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 3 4 4 MIN VOLTAGE setting Enables defining voltage low limit value under this value all the capacitors will be disconnected In order to change the Min Voltage scroll to Min Voltage line and press Enter The Min Voltage screen appears 25 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 3 4 5 MAX VOLTAGE setting Enables defining
7. Non vital setting In order to define the Non Vital Setting you must access the PF CONTROLLER screen by repeating steps from chapter 2 paragraphs 1 2 3 l Once the PF CONTROLLER screen appears scroll to Non Vital Setting and press Enter 2 The Non Vital Setting screen appears MOM VITAL SETTING me DELAT OM DECAY OFRE onie ze CONTROL FHMGE 4 61 DELAHrERFE EL Figure 3 9 Non vital setting 3 3 1 DELAY ON l Delay On enables setting the delay seconds between the decision of connecting the capacitor and its actual connection This delay is meant to minimize the number of connections disconnections of the capacitors during control of the desired power factor value 2 In order to change the delay on scroll to DELAY ON and press Enter The Delay On screen appears 3 Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER gt CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 3 3 2 DELAY OFF Delay Off enables setting the delay seconds between the decision of disconnecting the capacitor and its actual disconnection This delay is meant to minimize the number of connections disconnections of the capacitors during control of the desired power factor value In order to change delay off scroll to DELAY OFF and press Ent
8. ER FACTOR screen appears OHER POWER FACTO REAL TIME DISPLAY MIM MAe DISPLAY DEMAND POHER MINHA RESET PF CONTROLLER Figure 2 2 Power Power Factor screen 3 Scroll to PF Controller and press Enter The PF CONTROLLER screen appears PF CONTROLLER UMTEULLEF 3 DATA WITAL SETTING MOM VITAL SETTING WORKIMG RANGE Figure 2 3 PF Controller screen 11 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 2 2 Controller s Data Screen Selection of CONTROLLER S DATA from the main menu displays monthly and weekly average power factor from the last power startup and also real time power factor In case of fault one of the following messages appears e Low Current Appears in case of measured current is lower than in the allowed Working range definitions e High THD Appears in cases of measured current voltage THD is higher than in the allowed Working range definitions e Volt Range Error Appears in cases of measured voltage is lower higher than in the allowed Working range definitions e Capacity Load Appears in cases of the system is turned to capacitive e Need More Capacitors Appears in cases of all the capacitors are ON however the desirable Set Point is unreachable CONTROLLERS DATA MONTH AVARAGE 8 328 WEER AWARAGE 8 926 PF 9 927 Figure 2 4 Contro
9. OL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel Once the Value Measure screen appeared the LTC will automatically begin measuring process It will scan and measure each capacitor step one by one the whole process may take a few minutes During the scan process the indications Output Leds will turn On according to the scanned output progress Once the measuring process 1s finished the measured values appear on screen The column MEASURE indicates the measured values The column VALUE indicates the capacitor s value as defined by the user The RND button enables correction of the measured values to the closest rounded value under the condition that the difference between the capacitors doesn t exceed 10 The SAVE button enables saving the measured and or rounded values instead of the values entered by the user at the previous screen capacitors value 3 2 5 Total Relay In order to set the number of the capacitors steps in the system at the Vital Setting screen scroll down to Total Relay and press Enter The Total Relay screen appears Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER _20 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 3 3
10. Y ERR and press Enter The Delay ERR screen appears 3 Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 3 4 Working range settings Working range settings enable defining limits for current voltage THD V and THD I values In order to define the Working Range Setting you must access the PF CONTROLLER screen by repeating steps from chapter 2 paragraphs 1 2 3 ee l CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel Once the PF CONTROLLER screen appears scroll to Working Range and press Enter The Working Range screen appears WORE I MG RANGE A I MIN CURRENT a MIH UOLTAGE 285 MAS WOLTHGE 25i Figure 3 10 HE HE H El Ej Working range settings 3 4 1 MAX THD I setting Enables disconnection of all the capacitors whenever the actual THD I value exceeds the value which was defined by the user When THD I 0 this option is disabled In order to change the Max THD I scroll to Max THD I line and press Enter The Max THD I screen appears Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER dd CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 3 4 2
11. er The Delay OFF screen appears Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 3 3 3 CONTROL RANGE Control Range enables the user to define the working range of the capacitors in performing power factor correction When the control range 0 01 the system is looking for the minimal capacitors number for performing power factor correction from the desired value for example 0 92 to the value 0 93 0 92 0 01 control range From this point the system is looking for the minimal capacitors combination required for reaching the power factor of 0 93 and its disconnecting capacitors accordingly In order to change Control Range scroll to Control Range line and press Enter The Delay Control Range screen appears Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 00 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 3 3 4 DELAY ERR 1 Delay ERR enables setting the delay seconds after an error accurse for error list please check chapter 2 2 and between the return to normal operation mode This delay is meant to minimize the number of connections disconnections of the capacitors during control of the desired power factor value 2 In order to change delay time scroll to DELA
12. etting the Power Factor Set Point l Scroll down to Power Factor and press Enter 2 The Power Factor setting screen appears VITAL SETTING POWER FACTOR 000000 920 I ai Figure 3 6 Power Factor change 3 Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 3 2 2 Changing the Capacitors Connection Order I Atthe Vital Setting screen scroll down to ORDER 2 Each time you press Enter at the line indicating ORDER the connection order options will be changed from the following possibilities RANDOM FIRST CYCLE 3 The capacitors chosen for power factor correction are chosen according to their size meaning that it chose the minimal number of the capacitors for achieving the requested value of the power factor 5 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 4 There are a number of methods as following RANDOM this method enables random selection of equally sized capacitors In this method after a certain period the number of the working hours of all equally sized capacitors will be equal FIRST this method enables fixed selection meaning a certain capacitor will always be first and the other will always be second and third and so on this method is recommended in places preferring unequal working hours of the capacito
13. ller s Data Screen 10 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel CHAPTER 3 Power Factor Controller Settings In order to set all values requested for proper operation of the Power Factor Controller the following settings must be defined Transformer Ratio Vital Setting Non Vital Setting amp Working Range 3 1 Transformers Ratio 1 From Main Menu scroll to TECHNICAL and press Enter The Enter Code screen appears SETTINGS ENTER CODE BEBE 1 T 4 Figure 3 1 Enter Password The password is 1 2 Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER ie CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel NOTE If the incorrect password is inserted into the Password field an Error message appears and the password should be reentered 3 The TECHNICAL screen appears TECHNICAL SET CLOCK SET DATE TRANSFORMER RATIO CONNECTIONS TEST MEAT Figure 3 2 Technical screen 4 Scroll to Transformer Ratio and press Enter The Transformer Ratio screen appears _14 CONTROL APPLICATIONS Ltd Supervision amp control system A Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel
14. oller are made via terminal connector plugs Recommended max tightening torque for the connector screws is 0 5 Nm The CT cores of the E Net LTC Power Factor Controller are located externally on the rear of the instrument and the lead from the leg of the external Current Transformer must pass through in the correct direction NOTE Ensure all the connections to the leads of the current transformer wiring are secure and there is no mechanical strain on the wire The cross section of the leads to the Current transformer must be compatible with the power of the current transformer We recommend a power transformer with at least 3VA and the length of the wiring of the transformer should not exceed 5m CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel 1 Insert the lead from side K of the Current Transformers of Line 1 through the hole marked I1 K of the E Net LTC Power Factor Controller 2 Repeat the procedure for Line 2 and Line 3 I2 I3 K 3 Connect the rest of the connections to the E Net LTC Power Factor Controller by means of terminal connector plugs All Rear Panel connections are according to the wiring diagram See Figures 1 1 and are easy to follow WARNING Never allow an open circuit between K amp L of the Current Transformers CONTROL APPLICATIONS Ltd Supervision amp control system
15. rs CYCLE whenever there are a few capacitors of equal size there 1s a possibility to use the cycle method so that the number of working hours will be equally divided between these capacitors 3 2 3 Capacitor s Value setting 1 In order to define manually the values of the capacitors which are used in the system at the Vital Setting screen scroll down to Capacitors Value and press Enter 2 The Capacitor Value screen appears KVA CAPACITOR 1 Figure 3 7 Capacitor Value screen _18 CONTROL APPLICATIONS Ltd Supervision amp control system Tel 972 3 6474998 Fax 972 3 6474598 24a Habarzel St Tel Aviv 69710 Israel In order to manually define the value of the capacitor step use F3 amp F4 buttons to scroll between steps and press Enter in order to access the value setup The Capacitors Value screen appears Use the buttons F3 amp F4 to move the cursor to set the value use the buttons Fl amp F2 when finished click ENTER 3 2 4 Capacitor s Value measure The Elnet LTC enables true capacitors value measure for capacitors up to 16 In order to measure and automatically define the values of the capacitors which are used in the system at the Vital Setting screen scroll down to Capacitors Measure and press Enter The Value Measure screen appears VALLE MEASURE CHP 1 HE HZ ZH ZH l l l l LT FL U Figure 3 8 Value measure of the capacitors 19 CONTR
16. voltage high limit value above this value all the capacitors will be disconnected In order to change the Max Voltage scroll to Max Voltage line and press Enter The Max Voltage screen appears Use the buttons F3 amp F4 to move the cursor to set the value use buttons Fl amp F2 when finished click ENTER 396 s
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