Omega Vehicle Security Switch LVR300 User Manual

Users Guide  
LVR300 Series  
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LVR300 Series  
Continuous Level Switch System  
 
LVR300 Series Sensor Overview  
Operating Principle  
The complete LVR300 Series Sensor is designed to be a self-contained continuous level sen-  
sor and control, requiring only a power source. A 16-bit microcontroller with a 14-bit A/D  
converter and a 12-bit D/A converter provides the necessary processing speed and  
measurement accuracy. The signal is displayed with units using a back-lit LCD  
graphical display and converted to a 4-20 mA signal. Two switch points  
with either a positive or negative output can be programmed over the com-  
plete range.  
The switching point hysteresis can be set separately in value and direction  
(minimum/maximum switching value). Upward and downward crossings of switching points and error messages are  
shown in the display with a flashing red LED that is easily visible from a distance.  
Other parameters can be changed using codes, including: signal filter; selectable unit (inch, cm) includes automatic con-  
version of the values; selectable 0-20 mA or 4-20 mA output; value assignment of 4-20 mA (setting of zero point and  
span). The complete housing can be rotated around the mechanical connection so that the correct reading position can be  
set after mounting (installation).  
This LVR300 Series is very easy to use, as dialog messages are displayed for the user. It can even be set when wearing  
protective gloves, if necessary.  
Programming Overview  
The LVR300 Series’ programming ring can be rotated from the Neutral center position to  
Position 1 and Position 2. The following actions are possible:  
A – Display of parameters with Position 1 (simultaneous display of the set parameters) –  
Turn the programming ring left to Position 1 to begin cycling through these programming  
parameters: Switching points S1 and S2, Hysteresis direction of S1 and S2,  
Hysteresis Hyst 1 and Hyst 2, Code (allows editing of additional parameters),  
Filter, Units, Output, 4 mA Value and 20 mA value. See following pages for  
detailed programming instructions.  
B – Editing with Position 2  
Programming Ring turns from  
Turn the programming ring to the right to Position 2 and a flashing cursor  
appears showing the position to be changed. With repeated turning to  
Position 2, the values are increased. By turning to Position 1, you obtain  
Position 1 to Position 2  
Terminal Assignment  
the next position. Each position can be edited in this way. If there is no  
brown  
action within 5 seconds, the device returns to the normal display sec-  
tion without the change being accepted, and you will have to cycle  
through the program again.  
1
2
3
4
5
24 to 30 VDC  
white  
blue  
4-20 mA  
0 V  
z
LVR  
Sensor  
z
z
black  
gray  
S1  
C – Saving the change with Position 1  
Turning one time toward Position 1 after quitting the last value signifies  
acceptance of the change.  
S2  
or  
Z = load  
Example: PNP  
NPN  
Value  
Alarm range  
Programming protection:  
The programming ring can be pulled off,  
inverted and replaced. This will prevent further  
The switch points are automatically chang-  
ing to positive or negative, depending on  
your interface.  
S1 max.  
Hyst 1  
programming resulting from turning the ring in  
either direction.  
Time  
Mating Connector  
M12 x 1, 5-position female, shielded, straight or  
Value  
M12 x 1, 5-position female, shielded, right angle  
Example of hysteresis setting:  
Examples with S1 as maximum switching point  
and as minimum switching point:  
S1 min.  
Hyst 1  
Sources: Hirschmann, Binder,  
rde Connectors & Cables or  
comparable connector  
Alarm range  
Time  
All specifications are subject to change without notice.  
© Copyright Omega Engineering Inc. – 4/05  
 
LVR300 Series Programming Positions & Operation  
On power-up, the company logo is displayed, followed by the preset level/unit measurement. Changing the level (by float movement)  
will be reflected in the display. If the level is at either of the preset switch levels S1 or S2 (the upper and lower levels), the display will  
also be alternating between the S1 (or S2) status indication with the level reading. The Switch Active status is also indicated by a  
flashing LED.  
Neutral  
By rotating the program ring to Position 1 (P1, toward the left) and then back to Neutral, the pro-  
Program  
Position 1  
Program  
Position 2  
gram steps to the S1 setting. The level for activation of the S1 switch is indicated, and may be  
edited by turning the program ring to the P2 position (see below). This will highlight the tenths  
digit. The digit value is advancing by alternating the program ring from center to the right P2  
position. Turning the ring to the P1 position accepts that value and moves to the next digit.  
Turning the ring to Neutral and then back to P1 will cycle through all of the digits and then accept the  
values.  
1
2
PROGRAMMING POSITIONS  
The P1 to Neutral movement steps the program through positions in the following sequence:  
LOGO  
Logo display, only shown on initial power-up.  
###.#  
###.#  
Current float level. At right, the switch active status is indicated and alter-  
nates with the regular measurement display, and the LED is flashing.  
OR  
Inches (cm)  
< S1  
S1  
MODIFYING OPERATING PARAMETERS  
Switch point 1 value,  
sets level for activation.  
From any of the Programming Position steps noted at left, follow  
these steps to modify the operating parameter:  
###.#  
1 Turn the programming ring to the right to Position 2, and then  
back to Neutral, to bring up the editing cursor in the first deci-  
mal place.  
S1  
Switch point 1 is active if the level  
is below (or below) S1.  
Min. (Max.)  
2 Turning the ring to the right and back to Neutral increases the  
current decimal place to the next highest value.  
Hyst 1  
##.#  
Hysteresis threshold added to  
switch point 1 for switch = active.  
3 Turning the ring to the left and back to Neutral moves the cur-  
sor on to the next decimal position. Repeat step 2 to edit the  
current position.  
S2  
Switch point 2 value,  
sets level for activation.  
4 To confirm the new value, continue to turn the ring to the left  
and back to neutral until you cycle through all of the decimal  
places and the next parameter shows on the display.  
###.#  
S2  
Switch point 2 is active if the level  
is above (or below) S2.  
ENTERING ADDITIONAL PROGRAM PARAMETERS  
Max. (Min.)  
After reaching the Code step, enter 111 by turning the ring P1 to  
Neutral, and you can access these additional parameters:  
Hyst 2  
##.#  
Hysteresis threshold added to  
switch point 2 for switch = active.  
Filter  
##.#  
Units  
Output  
Inch (cm)  
4-20 mA  
1
4
2
3
6
To access other program para-  
meters, rotate ring to P2  
and change 000 to 111.  
Code  
000  
Time for the mea-  
surement to  
respond (seconds)  
Switch between inches  
and cm; Switch points are  
converted automatically  
Switchable to  
0-20 mA  
4 mA  
###.#  
20 mA  
###.#  
###.#  
Returns to regular display  
of current float level.  
###.#  
5
Inches (cm)  
Inches (cm)  
Set the 4 mA level  
(may be higher than  
the min. level)  
Set the  
20 mA level  
Returns to regular dis-  
play mode  
PROTECTING YOUR PROGRAMMING PARAMETERS  
Enter Code 989 to return to Factory Default Settings.  
Step-by-step program examples are illustrated on the following pages.  
1. Pull off the ring. Keep it as a  
personal key.  
Note: During the programming process, if there is no new action  
taken within 30 seconds, the sensor will return to “measurement  
display” without saving your changes. You will have to go through  
the entire program a second time to re-program the unit.  
2. Use ring in reverse position  
on the sensor (PROG.LOCK  
position).  
All specifications are subject to change without notice.  
© Copyright Omega Engineering Inc. 4/05  
 
LVR300 Series Quick Reference – Programming Steps  
HOW TO MODIFY THE SENSOR  
HOW TO ENTER ADDITIONAL  
PARAMETERS & INFORMATION  
OPERATING PARAMETERS  
Example: S1 = +18.6 Inches (or cm)  
When the program  
+ 0.0  
ring is turned to  
the right toward  
Position 2 (EDIT),  
a cursor appears  
at the parameter  
to modify.  
Inch (cm)  
If the ring is turned  
right toward Position 2  
(EDIT), a cursor  
S1  
Code  
0 0 0  
appears while the  
parameter you want to  
modify is displayed.  
+25.5  
Turning right  
effects an increase  
of the figure.  
Code  
0 0 1  
S1  
Turning right effects  
a change to the next  
higher figure.  
+25.  
Code  
0 0 1  
Turning left  
S1  
moves the cursor  
to the next deci-  
mal position.  
Turning left moves the  
cursor to the next deci-  
mal position.  
+25.6  
Code  
0 1 1  
S1  
+21.6  
Code  
0 1 1  
Filter for display and  
analog output. (It is a  
FIFO filter and the  
time to accomplish the  
actual measurement  
value corresponds to  
the seconds shown in  
the display.)  
3x  
Move ring 3 times to  
the right, alternating to  
Position 2 and center,  
and you will see a  
S1  
Code  
1 1 1  
+28.6  
3-digit increase to the  
figure marked by the  
cursors location.  
S1  
By turning the ring  
to the left toward  
Position 1,  
the cursor disap-  
pears and enters  
the code. The  
next parameter  
arrives automati-  
cally.  
Filter  
1
+18.6  
Selection of various  
units (inches, cm, PSI).  
Display and switch  
points are recalculated  
automatically.  
9x  
S1  
Units  
+18.6  
Inch (cm)  
Turn the ring 2 times to  
the left, toward  
2x  
Output  
S1  
Position 1, and the cur-  
sor disappears. The  
modified S1 is now vis-  
able and the next para-  
meter is shown  
Set analog output  
4-20 mA  
Min.  
4-20 mA or 0-20 mA.  
4 mA  
0
Start of analog  
output range  
(in the selected unit).  
automatically.  
20 mA  
80  
End of analog  
output range  
(in the selected unit).  
Cursor flashing  
+ 0.0  
In regular display  
mode again.  
Inch (cm)  
NOTE: If you remain idle in the programming stage  
for 30 seconds, the display indication will return to  
measurement displaywithout saving your new set-  
tings. You will have to cycle through the program  
again to make your changes.  
TO RETURN TO THE FACTORY DEFAULT SETTING:  
Set the code to 989.  
All individual parameters are now overwritten.  
All specifications are subject to change without notice.  
 
LVR300 Continuous Level Sensor Installation Guide  
General Information  
1. Continuous Level Sensors should be installed rigidly so the float is free to move as the  
liquid level changes.  
2. Continuous Level Sensors should be mounted in a tank area free of severe turbulence  
or protected from such turbulence by appropriate and adequate slosh shields.  
3. Continuous Level Sensors stems should be vertical for best results, but satisfactory  
operation is possible in most liquids with the stem at up to a 30º angle from vertical.  
4. Care should be taken that Continuous Level Sensors are always operated within electri-  
cal ratings.  
Cautions  
1. The pressure, temperature and electrical limitations shown for the specified level sensor  
must not be exceeded.  
2. The pressures and temperatures must take into consideration possible surges in the  
temperature and pressure of the system.  
3. The liquids used must be compatible with the materials of construction. Specifications  
of materials will be given upon request.  
4. Life expectancy of the sensor varies with applications.  
5. Ambient temperature changes can affect sensor set points, since specific gravities of  
liquids vary with temperature. Consult factory for assistance.  
6. Level sensors have been designed to be shock and vibration resistant. For maximum  
life, both should be minimized. Consult factory for assistance.  
7. Excessive contaminants in fluid may inhibit float operation and occasional wipe down  
may be necessary.  
8. Physical damage to product may render product unserviceable.  
9. Installation in a vessel made from magnetic materials may affect operation.  
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For latest product manuals: omegamanual.info  
 
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 in which wear is not warranted, include but are 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 the  
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR  
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED 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. 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 OMEGAS 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 information available BEFORE  
contacting OMEGA:  
FOR NON-WARRANTY REPAIRS, consult OMEGA  
for current repair charges. Have the following  
information available BEFORE contacting OMEGA:  
1. Purchase Order number under which the product  
was PURCHASED,  
1. Purchase Order number to cover the COST  
of the repair,  
2. Model and serial number of the product under  
warranty, and  
3. Repair instructions and/or specific problems  
relative to the product.  
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 2005 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.  
 
Where Do I Find Everything I Need for  
Process Measurement and Control?  
OMEGA…Of Course!  
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