Omega Vehicle Security Electric Heater DRF POT User Manual

Users Guide  
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DRF-POT FOR  
POTENTIOMETER INPUT,  
DRF-RES FOR RESISTANCE INPUT  
DRF Series Signal Conditioners  
 
User’s Manual DRF Series  
INDEX  
GENERALINFORMATION.................................................. 4  
QUICKGUIDE .................................................................... 5  
POWERSUPPLYCONNECTIONS ................ 5  
SIGNALADJUSTMENT .................................. 6 and 7  
DIMENSIONSANDCONNECTIONS .............. 8  
TECHNICALDATA .............................................................. 9  
INPUTSIGNAL ............................................... 9  
OUTPUTSIGNAL ........................................... 9  
POWER SUPPLY.......................................... 9  
MECHANICALDIMENSIONS ......................... 9  
GALVANICISOLATIONLEVELS ................... 9  
GENERALSPECIFICATIONS ......................... 9  
MATERIALS ................................................... 9  
CAUTIONS,WARNINGSANDNOTES............................... 10  
SAFETYCONSIDERATIONS  
PRESCRIPTION.- Before starting any been stored in  
a
bad conditions or  
a
operation of adjustment, protection failure happened, then do not  
r
e
p
l
a
c
e
m
e
n
t
,
attempt to operate, keep the unit out of  
service and send for repair.  
maintenance or repair, the  
unit must be disconnected  
from any kind of power supply. Keep the unit  
clean, to assure good functioning and per-  
formance. To prevent electrical or fire  
INCASEOFFIRE  
1.-Disconnecttheunitfromthepowersupply  
2.- Give the alarm according to the local  
hazard, do not expose the unit to excessive rules  
moisture. Do not operate the unit in the 3.- Switch off all air conditioning devices  
presence of flammable gases or fumes,  
such an environment definetely constitutes  
a safety hazard. The unit is designed to be  
mounted on a metal panel.  
4.- Attack the fire with carbonic snow, do not  
use water in any case  
WARNING:Inclosedareas  
do not use systems with  
vaporizedliquids.  
If the unit shows signs of damage, is not  
able to show the expected measures, has  
 
Pa ge 3  
User’s Manual DRF Series  
GENERALINFORMATION  
The DRF series of Isolated Signal  
Converters, allow to convert process  
The isolation offered by the DRF series  
signals,temperatures,electricalsignals, of Isolated Signal Converters is a 3 way  
etc,tocurrentloopsorvoltagesignalsfor  
isolation. Thus, all the benefits exposed  
further retransmision, while introducing  
above are applicable to any of the three  
intothesystemgalvanicisolationbarriers circuits composing the instrument : input,  
between the input, the output and the  
output and power.  
power supply circuits.  
Recalibrationoftheinstrumentsisrealized  
inafastandeasyway. Openingthefront  
cover grants access to the configuration  
jumpers. Additional Span and Offset  
potentiometers are directly accessible  
The DRF series of Isolated Signal  
Converters, offer an excellent relation  
between signal conversion speed and  
measurementaccuracy. Offeringuptoa  
0.2% accuracy and down to 70ms  
response time, these units can process  
information coming from probes or  
transducers, in such a way that can be  
fromthefrontalpart.Thesepotentiometers  
are highly decoupled, minimizing the  
iterations needed to obtain a correct  
adjustment.  
quickly retransmitted in  
a
fast and  
accurateformtoremotedataacquisition  
systems or PLC’s. The isolated signal  
converters of the DRF series are ideal to  
integrate into 12 bit data acquisition  
In order to obtain a higher and quickest  
benefit of the DRF units, we recommend  
you to read carefully the information  
providedinthismanualbeforeproceeding  
systems.  
totheinstallationoftheinstrument.Inthis  
manual you will find all technical data,  
Its powerful galvanic isolation of 3500 V  
introduceshighsecuritytothemeasuring  
both electrical and mechanical, needed  
for a correct instalation and utilization.  
systems, preventing the propagation of  
thosephenomenonwhichusuallycause  
damage, such as transient peaks or  
energyshocksinanyofthecircuitsofthe  
Note : The DRF Series Isolated Signal  
Convertershaveacharacteristicslabel  
attachedonthesideoftheinstrument.  
system. The galvanic isolation also acts  
as a strong CE barrier. The decoupling  
created between the circuits avoids  
pernicious effects on the output, such as  
groundloopsorsignalleaks,whichdistort  
Check that this information matches  
withyourrequirementsforthespecific  
application, and especially check the  
value and type of the Power Supply.  
the acquired data and are extremely  
difficulttoisolateonceintroducedintothe  
signal.  
 
Pa ge 4  
User’s Manual DRF Series  
QUICKGUIDE  
The DRF units have a front cover which  
can be opened down. This cover gives  
access to the Span and Offset  
potentiometers, and to the selection  
jumpersforinput andoutputsignalranges.  
Toopenthefrontcover,pressslightlythe  
sidesofthecoverattheupperside,close  
totheOUTPUTterminals,asindicatedon  
Figure1.  
Thecoverisfreetoopendown,asshown  
onFigure2.  
POWERSUPPLYCONNECTIONS  
FIGURE1  
FRONT VIEW WITH COVER  
DRFunitsarepoweredthroughtheplug-  
interminalpositionedontheuppersideof  
the instrument. This terminal is placed in  
atransverseaxis,differentfromtheother  
terminals. Close to the power supply  
terminalthereisasmallyellowlabelwith  
indicationsontheconnectionsforACand  
IMPORTANT !! Check that the power  
supply indicated on the white label  
attached to the side of the instrument,  
matcheswiththepowersupplyyouwant  
to connect.  
For more accurate information on the  
power supply connections, please see  
page 6 of this manual.  
DC  
FIGURE2  
SIDE VIEW  
POWER S UPPLY TERMINAL  
FRONT COVER OPENING:  
ACCESS TOJUMPERS FOR  
INPUT AND OUTPUT RANGE  
SELECTION, AND ACCESS TO  
SPAN AND OFFSET ADJUST  
POTENTIOMETERS  
 
Pa ge 5  
User’s Manual DRF Series  
SIGNALADJUSTMENT  
Toproceedtoadjustarangeofinputand  
output signals, first select with the  
appropriate jumpers, the signal ranges  
which include your desired adjustment.  
Then proceed to the adjustment.  
Selection Jumpers : Output Signal Range  
SELECTIONJ UMPERS  
OUTPUT SIGNAL  
SPANP OTENTIOMETER  
OFFSET POTENTIOMETER  
0/20mA  
0/10Vdc  
0/1Vdc  
(4/20mA)  
SELECTIONJ UMPERS  
INPUT SIGNAL  
Selection Jumpers : Input Signal Range  
(See next page)  
FIGURE 3  
F RONT VIEW  
WITHOUT COVER  
getting an output which is the  
AdjustmentExampleformodelDRF-POT  
difference between the high and low  
output levels (10-0=10Vdc).  
1.- Connect potentiometer to input  
terminals (8 «term+», 9 «term-» and 7 «signal»)  
2.- Connect a multimeter to the output  
5.- Input low input level (0 %).  
Operate offset potentiometer until  
signal terminals (4 and 5 for mA or 4 and 6 for  
Vdc).  
getting the low level output (0Vdc).  
(Values in brackets are examples for  
calibration 0/100% = 0/10Vdc)  
a
6.- Input high input level and check that  
that the output also matches the  
desired level (100 % =10Vdc).  
3.- Input a zero signal (0 %).  
Operate offset potentiometer until If more accurate measurement is needed,  
repeat steps 5 and 6.  
getting a zero output (0Vdc).  
Most of the input / output combinations  
will be properly adjusted within the  
instrument accuracy after these steps.  
4.- Input the difference between the high  
and low input levels (100-0=100% Aac).  
Operate span potentiometer until Close front cover once calibration is  
finished.  
 
Pa ge 6  
User’s Manual DRF Series  
SELECTION JUMPERS: INPUT SIGNAL RANGE  
DRF-POT for POTENTIOMETER SIGNALS  
Range : 100% FS  
Range : 25% FS  
Range : 12.5% FS  
Range : 50% FS  
DRF-RES for RESISTANCE SIGNALS  
Range :  
10 KOhms  
Range :  
3 KOhms  
Range Min : 5 KOhms  
Range Min : 1.5 KOhms  
Range :  
1.5 KOhms  
Range :  
5 KOhms  
Range Min : 750 Ohms  
Range Min : 3 KOhms  
 
Pa ge 7  
User’s Manual DRF Series  
DIMENSIONS AND CONNECTIONS  
9mm  
(0.35’’)  
Output Connections  
93mm  
(3.66’’)  
Input Connections  
22,5mm  
(0.89’’)  
POTENTIOMETER  
DC Powered  
RESISTANCE  
Special Width for  
AC Power models  
~
~
24 Vdc  
0 Vdc  
AC Powered  
110 mm  
(4.33’’)  
37mm  
(1.46’’)  
 
Pa ge 8  
User’s Manual DRF Series  
TECHNICAL DATA : Models DRF-POT and DRF-RES  
INPUTSIGNALforPOTENTIOMETER  
RANGES  
0/100 %  
0/50 %  
StandardDINrailmounting,asspecified  
onDIN46277andDINEN50022  
0/25 %  
37.5 x 7.5 mm (1.38 x 0.3 ´´)  
0/12.5%  
(minimum8%)  
GALVANICISOLATIONLEVELS  
DCUnits  
Potentiometer value min 100Ohms  
max 1MOhm  
Input - Output 3.5 KV (60 seconds)  
Power-Input  
3.5 KV (60 seconds)  
3 Wire System, 1 Vdc Excitation  
Power-Output 1 KV(60 seconds)  
INPUTSIGNALinRESISTANCE  
ACUnits  
RANGES  
0/10 KOhms  
Input - Output 3.5 KV (60 seconds)  
0/5 KOhms  
Power-Input 3.5 KV (60 seconds)  
0/3 KOhms  
Power - Output 3.5 KV (60 seconds)  
0/1.5 KOhms  
(minimum750Ohms)  
2 Wire System, 0.2 mA Excitation  
All isolation levels are tested during a time  
of 60 seconds, with current leaks <1mA  
Note : Indicated isolation levels are also  
sometimes named as STRENGTHENED  
ISOLATION levels, for systems with  
OUTPUT SIGNAL in VDC  
RANGES  
0/10 Vdc  
0/1 Vdc  
11Vdcapprox.  
-1Vdcapprox.  
1KOhm  
Polution Level 2  
Max Output  
Min Output  
Min Load R  
GENERALSPECIFICATIONS  
Accuracy  
<0.2% F.S.  
Optimizedfor 12 bit systems  
OUTPUT SIGNAL in mA  
Linearity  
<0.1% F.S.  
RANGES  
0/20mA(4/20mA)  
ThermalDrift  
<250ppm/ºCTipical  
Max Output  
22mAapprox.  
Warm-UpTime 5 minutes  
ResponseTime <70mS  
Min Output  
Max Load R  
-1.5mAapprox.  
400Ohms  
(90% of signal)  
POWERSUPPLY  
Plug-InScrewTerminals  
DCPower  
ACPower  
24Vdc±10%  
230Vac ±10% 50/60 Hz  
115Vac ±10% 50/60 Hz  
Maximum Wire Section 2.5 mm2  
Protection  
IP-30  
Temp.Operation from 0 to 60ºC  
Temp.Storage from -20 to +70ºC  
Consumption <3.8VA  
MECHANICALDIMENSIONS  
MATERIALS  
BoxandCoverinPoliamidePA6UL94  
V-2 blue color  
Terminals in Poliamide UL94 V-0  
DC Units  
AC Units  
22.5 x 93 x 110 mm  
37.0 x 93 x 110 mm  
Weight DC  
Weight AC  
120gr.  
200gr.  
 
Pa ge 9  
User’s Manual DRF Series  
CAUTIONS,WARNINGSANDNOTES  
INSTALATION  
PRECAUTIONS.- The installation and the  
fields, such as power relays, electrical  
future use of this unit  
must be done by qualified  
engines, speed regulators, etc. Do not  
use until installation is completed.  
personnel. The unit has  
not AC (mains) switch,  
POWER SUPPLY.- The power supply must  
be connected to the adequate terminals 1,  
2 and 3. The characteristics of the power  
supply are shown on the side label. Please  
make sure that the unit is correctly  
connected to a power supply of the correct  
neither internal protection fuse. It will be in  
operation as soon as power is connected.  
The installation must incorporate an  
external mains switch with  
a
protection  
fuse and also the necessary devices to  
protect the operator and the process when  
voltage and frequency. Do not connect the  
unit to lines which are overloaded or which  
using the unit to  
a
control machine or  
process where injury to personnel or  
damage to equipment or process may  
occur as a result of failure of the unit.  
provide power to systems working on ON-  
OFF cycles or inductive loads.  
ATTENTION : If the power supply is DC  
voltage, be careful with the polarity  
indicated for each terminal.  
RECOMMENDED FUSES  
24 Vdc  
250mA  
230 Vac  
70 mA 100 mA  
115 Vac  
SIGNAL WIRING .- Certain considerations  
must be given when installing the signal  
input wires. If the wires are long, they can  
act as an antenna introducing electrical  
noise into the unit. Therefore :  
All fuses .-Time Lag Fuse  
SAFETY PRESCRIPTIONS.- The unit has  
been designed and tested  
under EN-61010-1 rules and  
is  
delivered  
in  
good  
Do not install the signal input wires in the  
same conduit with power lines, heaters,  
conditions. This User’s Ma-  
nual contains useful information the user  
has to respect in order to warrant a proper  
function of the unit, and good security  
solenoids, SCR controls, etc ... and always  
far from these elements.  
conditions. The unit is designed for  
internal applications, with good  
ventilation to avoid excessive heating. It  
can occasionally be applied to  
temperatures down to 10ºC or up to 70ºC  
When shielded wires are used, leave  
unconnected the shield on the transmitter  
side and conect the other end of the shield  
to the ground terminal of the machine.  
without security degradation. Do all  
connections before applying power to the  
unit. Do not make wiring changes until  
power is disconnected from the unit.  
EXCITATION VOLTAGE.- Model DRF-PR  
incorporates an internal power supply for  
transducers. The output of this power  
supply is connected to terminals 7 and 9.  
Do not connect these terminals to an  
Install the unit far from elements  
generating electric noise, or magnetic  
external power supply, beacuse both units  
will be permantently damaged.  
 
Pa ge 10  
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 unautho-  
rized 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 OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PRO-  
CESSING 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, insur-  
ance and proper packaging to prevent breakage in transit.  
FOR NON-WARRANTY REPAIRS, consult  
OMEGA for current repair charges. Have the  
following information available BEFORE con-  
tacting 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.  
FOR WARRANTY 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.  
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.  
 
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