Omega LVCN-302 User Manual

omega.com
®
®
LVCN-302
Set-Up Manual for Sump Model
®
Users
Guide
Specifications:
Sensor Input: Isolated input accepts any type of 4-20 mA process signal. Loop power available up to
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
Overall Dimensions: Tall: 16.75 (425 mm), Wide: 10.25 (250mm), Deep 2.25 (57mm),
24VDC for 2 wire device
gasket; NEMA 4 graphic front panel; steel back pan housing.
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
LVCN-302 Features and Overview
Let's say your tank is 112 inches deep, and the transducer range of the sensor youve
chosen is 0-5 psi of water. 5 psi equals 138 inches H 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
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
2O The pressure transducer is
(see page 4)
Tank Cross-Section Display with LVCN-302
U
pp
er Lim
it of D
isplay W
p
O
N
it of Display W
indow
indow
112
Pump
110
110 to 50 the critical
range in the tank you
need to monitor.
50
11 OFFSET
High Alarm
S
u
m
Actual Liquid Level
Sump OFF
Low Alarm
Low
er Lim
Pressure Transducer
110
50
95
®
.3
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.
ON
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.
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
Output & Input Terminal Connections
(All terminal connections are plug in Phoenix type)
Output
Terminals
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.
#1-#3 Sump range operates at same level as #7-#9. Condiser it a spare Form C sump relay.
120 VAC
Power Supply
Power Supply
3. 120 VAC - Com.
2. Ground
10.0 amp
1. 120 VAC - Hot
10.0 amp
10.0 amp
24 Volt DC
Power Supply
(Unregulated)
10.0 amp
Power Supply
3. 24 VDC - Neg (-)
2. Ground
1. 24 VDC - Pos (+)
Sensor Input
4. 4-20 mA (-)
3. 4-20 mA (+)
2. Ground
1. + 24 VDC Output
NOTE: Terminal #1 provides power for loop powered sensors.
Initial Set-Up in Eight Easy Steps
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.
PROGRAMMING MODE
ON
1 2 3 4
1. - Setting the T ransducer Range Press the SELECT button on the graphic face -
RANGRANG
RANG
RANGRANG
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 120 tank 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
1.0
2. - Setting Offset / Transducer Height Press the SELECT button again and
appear in the display. A few seconds later, the display will convert to
psi water
) (27.7
specific gravity of water
inches
)
= 138.5 inches
( Note: 1psi water = 27.7 )
L___L___
L___. Enter the
L___L___
OFSTOFST
OFST will
OFSTOFST
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 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.
P___P___
P___. The
P___P___
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___P___
P___ at 110 and the Lower Limit
P___P___
P___P___
P___ at 50”.
P___P___
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 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 or alarm level. (See the above
For example
.)
P___P___
P___. The
P___P___
not a control
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. 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.
P___P___
P___ appears
P___P___
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. 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.
P___P___
P___ appears in the display. Enter the
P___P___
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. 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.
P___P___
P___ appears in the display. Enter the Sump OFF
P___P___
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. 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.
P___P___
P___ appears
P___P___
Sensor Input Connections / Schematics
Signal Power Supplied by L VCN-302 (Loop Powered)
4.
4. 4-20 mA (
3. 4-20 mA (
2. Ground
1. + 24 VDC Out
-
+
)
)
Sensor Input
Terminal
Signal Power Supplied by Other Source
4. 4-20 mA (
3. 4-20 mA (
2. Ground
1. + 24 VDC Out
Sensor Input
Terminal
-
+
)
)
Jumper #4 to #2
3.
2.
+24 VDC Output
1.
-
4.
3.
4-20mA ( +)
+
Level Input Transducer
+
(Transmitter)
+
Level Input Transducer
-
(Transmitter)
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.
T ypical Form-C Relay Connection
9.
8.
7.
3.
2.
1.
Form - C
10.0 Amp @ 120 VAC (noninductive)
Relay operates at same level as #7-#9. Consider it a spare Form C sump relay.
Sending 4-20ma Signal to Other Devices
LVCN-302
4. 4-20 mA (
3. 4-20 mA (
2. Ground
1. + 24 VDC Out
Sensor Input
Terminal
-
+
)
)
Sensor Input
4.
3.
+
-
Sensor Device
-
+
-
External
Power
Supply
+
PLC
-
+
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,
ERR3ERR3
an
ERR3 message is displayed in the Actual Liquid
ERR3ERR3
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
00.000.0
00.0
00.000.0
Process Signal
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
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.
Actual Liquid Level
00.000.0
00.0
00.000.0
Process Signal
Input is 20.0 mA
LV 2.8LV 2.8
LV 2.8
LV 2.8LV 2.8
It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGAis constantly pursuing certification of its products to the European New Approach Directives. OMEGAwill 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.
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 mishandling, 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, OMEGAneither 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 OMEGAwith 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. In no event shall OMEGAbe 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 W
ARRANTY RETURNS, please have the following
information available BEFORE contacting OMEGA:
1. Purchase Order number under which the product was PURCHASED,
2. Model and serial number of the product under warranty, and
3. Repair instructions and/or specific problems relative to the product.
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
3. Repair instructions and/or specific problems relative to
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.
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MADE IN
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