Omega Engineering LVCN-302 User's Manual
Contents
1. omega com Q EOMEGA LVCN 302 Set Up Manual for Sump Model OMEGA Inches MADE IN of YEAR USA WARRANTY Specifications Sensor Input Isolated input accepts any type of 4 20 mA process signal Loop power available up to 24VDC for 2 wire device Input Power 120VAC 900 mA 24VDC unregulated 450 mA Security Levels 3 levels of access protect data changes with DIP switch on back Control Circuits Four Form C relays 10 0 amp 125VAC noninductive Switching Mode Selectable NO or NC states Output amp Input Connections Terminal Connections are plug in Phoenix type Programmed Memory EEPROM Loss of power will not affect existing programmed data Mounting Format Flush mounted anodized steel enclosure with eight 8 10 32 studs and sealing gasket NEMA 4 graphic front panel steel back pan housing Overall Dimensions Tall 16 75 425 mm Wide 10 25 250mm Deep 2 25 57mm Weight 4 5 kg 10 Ibs LVCN 302 is a solid state controller with a variety of unique control and display features It s designed to simply present the crucial information at a glance It s built to perform in all types of harsh industrial environments as well as control alarms pumps solenoids etc Topics covered in this manual Displaying Your Tank s Cross Section Security Levels Select and Enter Data Initial Set Up Eight Simple Steps Sensor Connections Schematics Sending a 42. DIP switch to Programming Mode 1 LWA ON After the initial set up select the DIP switch settings for View Mode or Set WZ Point Changes Allowed More detail on Page 3 Holding down the INCREASE or oA DECREASE arrow for 3 seconds increases the scrolling speed of the numbers on WA the display 1 Setting the Transducer Range Press the SELECT button on the graphic face RANG will appear in the display A few seconds later the display will convert to ___ The Transducer Range of the input device needs to be entered using the INCREASE or DECREASE arrow The Transducer Range is determined by the manufacturer of the device It is printed on the device typically in either psi inches of water or inches mercury It is not the height of the tank you are controlling For example if you want to display a 120 tank of water in inches and have a transducer that has a manufacturer s range of 0 5 psi you would use the following formula 5 0 psi water 27 7 inches 138 5 inches Note 1psi water 27 7 1 0 specific gravity of water 2 Setting Offset Transducer Height Press the SELECT button again and GF ST will appear in the display A few seconds later the display will convert to ____ Enter the Transducer Height by pressing the INCREASE or DECREASE arrow Transducer Height is the location of the transducer from the bottom of the tank or if you are using a bubbler it is to the bottom of the bubbler stand pipe 3 S
3. In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth in our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFORE RETURNING ANY PRODUCT S TO OMEGA PURCHASER MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR number should then be marked on the outside of the return package and on any correspondence The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS please have the following FOR NON WARRANTY REPAIRS consult OMEGA for current information available BEFORE contacting OMEGA repair charges Have the following information available BEFORE 1 Purc
4. 2 will activate the differential output s to the control circuit device you have designed into your system 8 Entering the Low Alarm Level Press the SELECT button again the Low Level Alarm Point indicator LED on the graphic face and the top RED line in the bar graph display will flash P _ _ _ appears in the display Enter the Low Alarm Level using the INCREASE or DECREASE arrow When this point or level is reached it will indicate a Low Level Alarm has been reached and activate the control circuit device you have designed into your system Sensor Input Connections Schematics Signal Power Supplied by LVCN 302 Loop Powered 2Hghleanc Typical Form C Relay Connection 11 High Level Com 7 z 4 10 High Level N O 4 4 20 mA Jumper 4 to 2 ding ONC 8 Form C s 8 Sump ON Com 8 o 10 0 Amp 120 VAC mm 3 4 20 mA 3 sumponno 7 noninductive Level Input 6 Low Level N C 2 Transducer 5 Low Level Com Transmitter 4 Low Level N O 1 24 VDC Output as Relay operates at 3 3 Sump ON N C same level as 7 9 2 Sump ON Com 2 Consider it a spare gt 1 24 VDC Out Vy Sensor Input 1 Sump ON N O 1 Forme sump relay Terminal Signal Power Supplied by Other Source Sending 4 20ma Signal to Other Devices LVCN 302 Sensor Input gt 4 4 20 mA O1 Sensor Device PLC 4 gt 4 4 20 mA 3 4
5. 20 mA 3 4 20 mA 3 Level Input Transducer 2 Ground Transmitter 1 24 VDC Out 1 24 VDC Out F Sensor Input External ensor Input Terminal Power Terminal Supply Other Helpful Features of LVCN 302 Interrupted 4 20 mA Signal from Sensor Whenever the 4 20 mA signal from the sensor device is lost because of an open wire or device malfunction an ERR 3 message is displayed in the Actual Liquid Level window Additionally the entire bar display will flash red and green Over amp or Under 4 20 mA signal received When the input sensor is sending a 4 0 mA signal the Actual Liquid Level display will show a V character in the first digit of the display Actual Liquid Level Actual Liquid Level VIE G AGL G Process Signal Process Signal Input is 4 0 mA but Input is 20 0 mA not an open wire See above for open wire Software Version Numbers The version number of your LVCN 302 unit is shown in the Actual Liquid Level display window when you power up the unit If your unit has version 2 8 you will see in the window LY 2 8 Programmed data cannot be lost All the data and logic are written to a permanent EEPROM which will retain your data in the event the power supply is disconnected There is no battery on the board to maintain the data in the EEPROM ome a com OMEGA Servicing Europe Benelux Postbus 8034 1180 LA Amstelveen The Netherlands gt gt OMEGAne
6. 20 mA Signal to Other Devices M3760 1201 LVCN 302 Features and Overview Let s say your tank is 112 inches deep and the transducer range of the sensor you ve chosen is 0 5 psi of water 5 psi equals 138 inches H2O The pressure transducer is located 11 inches off the bottom of the tank With 51 inches of water in the tank you are cavitating the pump and at 108 inches of water you are facing probable flooding The goal is to maintain the liquid level between 90 and 65 inches using LVCN 302 The following steps should be taken in order to display a 50 to 110 inch window of the tank while maintaining a liquid level range of 90 to 65 inches High and low alarm output circuits will be activated at 105 and 55 inches The Initial Set up in Eight Easy Steps see page 4 describes in detail how to program LVCN 302 for your specific application To accomplish the above installation you would enter the following Transducer Range 138 0 inches H2O Transducer Height 11 0 Upper Limit of Window 110 0 Lower Limit of Window 50 0 High Alarm Fault Level 105 0 Sump ON Level 90 0 Sump OFF Level 65 0 Low Alarm Fault Level 55 0 Tank Cross Section Display with LVCN 302 ncres LE OMEGA 110 to 50 the critical range in the tank you need to monitor Actual Liquid Level Transducer Security Levels Selecting and Accessing Data Operator access to data modifications has three modes of security View Only Set Point Changes
7. Allowed and Programming Each mode is selected from the back of the unit with a DIP switch setting Programming Mode Lae This mode 1 ON allows you to WZ change all eight programmable LG settings It is used for initial set up Z and installation Set Point Changes Allowed z This mode 2 ON allows you to wl GB change all four set points the High amp Z Low Alarms Make up ON amp Make up Z OFF NO View Only Mode ia This mode ALL OFF prevents any changes from being made However Z all the information except the transducer range and transducer offset is available by pressing SELECT Output amp Input Terminal Connections All terminal connections are plug in Phoenix type Output 120 VAC Terminals Power Supply Sensor Input Output Terminals 12 High Level N C 11 High Level Com High Level N O 4 4 20 mA Power Supply 3 120 VAG Com 2 Ground 3 4 20 mA 1 120 VAC Hot 2 Ground 1 24 VDC Output Low Level N C Low Level Com aane e 24 Volt DC 2SumpONCom S Uneaten NOTE Terminal 1 1 Sump ON N O provides power for loop powered sensors 1 3 Sump range Power Su pply operates at same level 3 24 VDC Neg as 7 9 Condiser it a 2 Ground spare Form C sump relay 1 24 VDC Pos Initial Set Up in Eight Easy Steps PROGRAMMING MODE The initial set up requires you to change the
8. ee the above For example NOTE The previous four steps are protected from data changes when you choose either one of the other security modes The next four steps are accessible to changes in either the Programming Mode at the initial set up or with Set Point Changes Allowed mode selected 5 Entering the High Alarm Level Press the SELECT button again the High Level Alarm Point indicator LED on the graphic face and the top RED line in the bar graph display will flash P _ _ _ appears in the display Enter the level using the INCREASE or DECREASE arrow to set the desired level When this point or level is reached it will indicate a High Level Alarm has been reached and activate the control circuit device you have designed into your system 6 Entering the Sump ON Level Press the SELECT button again the yellow Sump ON indicator LED will flash along with the YELLOW line in the bar graph P _ _ _ appears in the display Enter the level using the INCREASE or DECREASE arrow to set the desired Sump ON level When this point or level is reached LVCN 302 will deactivate the differential output relay to the control circuit device you have designed into your system 7 Entering the Sump OFF Level Press the SELECT button again the Sump OFF indicator LED and the ORANGE line in the bar graph will flash P __ _ appears in the display Enter the Sump OFF level using the INCREASE or DECREASE arrows When this point or level is reached LVCN 30
9. electing the Upper Cross Section Press the SELECT button again the Upper Limit small numeric window display will begin to flash and the main display will convert to P ___ The Upper Limit display level needs to be entered using the INCREASE or DECREASE arrow This is the window or cross section of the tank you want to see displayed on the vertical bar display It is not a control or alarm level This is one of the unique features of LVCN 302 You can select to display any portion of the height of your tank For example Suppose you have a 120 tall tank that you want to control Filters and pumps occupy the bottom 50 inches and you don t want the level to ever go above 105 At the same time you want to display the crucial operating range of your tank including make up levels high low alarms and the actual level To select the highest resolution of this crucial range on the bar display you would enter the Upper Limit P _ __ at 110 and the Lower Limit P __ _ at 50 You can select to display any cross section you require for the installation 4 Selecting the Lower Cross Section Press the SELECT button again the Lower Limit small numeric window display will begin to flash and the main display will convert to P ___ The Lower Limit display level needs to be entered using the INCREASE or DECREASE arrow This is the window or cross section of the tank you want to see on the bar graph display It is not a control or alarm level S
10. hase Order number under which the product was contacting OMEGA PURCHASED 1 Purchase Order number to cover the COST of the repair 2 Model and serial number of the product under warranty and 2 Model and serial number of the product and 3 Repair instructions and or specific problems relative to the 3 Repair instructions and or specific problems relative to product the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 2001 OMEGA ENGINEERING INC All rights reserved This document may not be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the prior written consent of OMEGA ENGINEERING INC M3760 1201
11. ing improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion or current heat moisture or vibration improper specification misapplication misuse or other operating conditions outside of OMEGA s control Components which wear are not warranted including but not limited to contact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by it will be as specified and free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESS OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED LIMITATION OF LIABILITY The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order whether based on contract warranty negligence indemnification strict liability or otherwise shall not exceed the purchase price of the component upon which liability is based
12. l sales omega co uk It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regulations that apply OMEGA is constantly pursuing certification of its products to the European New Approach Directives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA Engineering Inc accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for patient connected applications MADE IN USA WARRANTY DISCLAIMER OMEGA ENGINEERING INC warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase OMEGA s WARRANTY adds an additional one 1 month grace period to the normal one 1 year product warranty to cover handling and shipping time This ensures that OMEGA s customers receive maximum coverage on each product If the unit malfunctions it must be returned to the factory for evaluation OMEGA s Customer Service Department will issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandl
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