Omega Engineering Water Pump LVCN 302 User Manual

®
omega.com  
®
®
LVCN-302  
Set-Up Manual for Sump Model  
MADE IN  
Users  
Guide  
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 & 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 lbs.)  
LVCN-302 is a solid-state controller with a variety of unique control and display features. Its designed to  
simply present the crucial information, at a glance. Its 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 4-20 mA Signal to Other Devices  
M3760/1201  
 
Security Levels / Selecting and Accessing Data  
Operator access to data modifications has three modes of security: View Only, Set Point  
Changes Allowed and Programming. Each mode is selected from the back of the unit with a DIP  
switch setting.  
Programming Mode  
This mode, #1 ON, allows you to  
change all eight programmable  
settings. It is used for initial set-up  
and installation.  
Set Point Changes Allowed  
This mode, #2 ON, allows you to  
change all four set points: the High &  
Low Alarms, Make-up ON & Make-up  
OFF.  
View Only Mode  
This mode, ALL OFF, prevents any  
changes from being made. However,  
all the information, except the  
transducer range and transducer  
offset, is available  
by pressing SELECT.  
Output & Input Terminal Connections  
(All terminal connections are plug in Phoenix type)  
Output  
Terminals  
120 VAC  
Power Supply  
Sensor Input  
4. 4-20 mA (-)  
Output Terminals  
12. High Level N.C.  
11. High Level Com  
10. High Level N.O.  
9. Sump ON N.C.  
8. Sump ON Com  
7. Sump ON N.O.  
6. Low Level N.C.  
5. Low Level Com  
4. Low Level N.O.  
3. Sump ON N.C.  
2. Sump ON Com  
1. Sump ON N.O.  
Power Supply  
3. 120 VAC - Com.  
2. Ground  
3. 4-20 mA (+)  
1. 120 VAC - Hot  
2. Ground  
1. + 24 VDC Output  
24 Volt DC  
Power Supply  
NOTE: Terminal #1  
provides power for  
loop powered sensors.  
(Unregulated)  
Power Supply  
3. 24 VDC - Neg (-)  
2. Ground  
#1-#3 Sump range  
operates at same level  
as #7-#9. Condiser it a  
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 DIP switch to Programming Mode, #1  
ON. After the initial set-up, select the DIP switch settings for View Mode or Set  
Point Changes Allowed. (More detail on Page 3.) Holding down the INCREASE or  
DECREASE arrow for 3 seconds increases the scrolling speed of the numbers on  
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 R___. 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 120tank of water in inches and have a transducer that has  
a manufacturers range of 0-5 psi, you would use the following formula:  
(5.0 psi water) (27.7 inches)  
( Note: 1psi water = 27.7)  
= 138.5 inches  
1.0 specific gravity of water  
2. - Setting Offset / Transducer Height Press the SELECT button again and OFSTwill  
appear in the display. A few seconds later, the display will convert to L___. 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. - Selecting 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 windowor 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 120tall tank that you want to control. Filters and  
pumps occupy the bottom 50 inches, and you dont 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 110and 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. (See 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-302 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)  
Typical Form-C Relay Connection  
12. High Level N.C.  
11. High Level Com  
10. High Level N.O.  
9. Sump ON N.C.  
8. Sump ON Com  
7. Sump ON N.O.  
6. Low Level N.C.  
5. Low Level Com  
4. Low Level N.O.  
3. Sump ON N.C.  
2. Sump ON Com  
1. Sump ON N.O.  
4.  
3.  
2.  
-
4. 4-20 mA (  
3. 4-20 mA (  
2. Ground  
)
Jumper #4 to #2  
4-20mA ( +)  
9.  
Form - C  
10.0 Amp @ 120 VAC  
(noninductive)  
8.  
7.  
+
)
Level Input  
Transducer  
(Transmitter)  
+
1. + 24 VDC Out  
+24 VDC Output  
Relay operates at  
same level as #7-#9.  
Consider it a spare  
Form C sump relay.  
1.  
3.  
2.  
1.  
Sensor Input  
Terminal  
Sending 4-20ma Signal to Other Devices  
Signal Power Supplied by Other Source  
LVCN-302  
Sensor Input  
-
4. 4-20 mA (  
3. 4-20 mA (  
2. Ground  
)
Sensor Device  
+
-
PLC  
4.  
3.  
-
4. 4-20 mA (  
3. 4-20 mA (  
2. Ground  
)
+
)
-
+
-
4.  
-
3.  
+
+
+
-
+
)
Level Input  
Transducer  
(Transmitter)  
1. + 24 VDC Out  
+
-
1. + 24 VDC Out  
External  
Power  
Supply  
Sensor Input  
Terminal  
Sensor Input  
Terminal  
 
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 ERR3 message is displayed in the Actual Liquid  
Level window. Additionally, the entire bar display will  
flash red and green.  
Over &/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 \/ character in  
the first digit of the display.  
Actual Liquid Level  
Actual Liquid Level  
00.0  
Process Signal  
00.0  
Process Signal  
Input is 20.0 mA  
Input is 4.0 mA, but  
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 LV 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.  
 
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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  
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  
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moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components which  
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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  
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1. Purchase Order number under which the product was  
PURCHASED,  
FOR NON-WARRANTY REPAIRS, consult OMEGA for current  
repair charges. Have the following information available BEFORE  
contacting OMEGA:  
1. Purchase Order number to cover the COST of the repair,  
2. Model and serial number of the product, and  
2. Model and serial number of the product under warranty, and  
3. Repair instructions and/or specific problems relative to the  
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© Copyright 2001 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic  
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M3760/1201  
 

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