Omega Engineering FAR-1 FAR-1 Series User manual

M2301/0197
CJS0895JACB







INSTRUCTION
SHEET
Speciallydesignedtopoweruptofourbridges
(loadcellsof350Ω)inparallelat10Vdc.This
unitusedwhiththeCCT-80signalconditioner
accommodates6-wirebridgecircuits,where
twowiresprovidebridgeexcitation,twowires
sense the excitation at the bridge and the
othertwowiresgivethesignaltotheconverter.
The sensed data is used to compensate
errors due to the lead resistance. If a 4-wire
loadcellisused,thenconnectterminal5to6
andterminal 3to 4.
Description
RemovethePackingListandverifythatyou
havereceived allequipment, includingthe
following(quantitiesinparentheses):
FAR-1 Series Power Supply (1)
Instruction Sheet (1)
If you have any questions about the
shipment,pleasecalltheOMEGACustomer
ServiceDepartment.
Whenyoureceivetheshipment,inspectthe
container and equipment for signs of
damage. Note any evidence of rough
handlingintransit. Immediatelyreport any
damagetotheshippingagent.
Thecarrierwillnothonordamage
claimsunleesallshippingmaterial
is saved for inspection. After
examining and removing
contents, save packing material
and carton in the event
reshipmentis necessary.
UnpackingInstructions


An OM EGA TechnologiesCom pany
FAR-1 Series
Power Supply (10V, 250MA)
Wiring




NOTE
Figure 1. Wiring Diagram












POWER SUPPLY
FUENTE
ALIMENTACION
OUTPUT /
SALIDA
3 4 5 6
~ ~
1 2
AC
VOLTAGE
++
__
SENSE OUT SENSE
OUT
LOAD
CELL
+
+
-
-
-
-
+
+SIGNAL
Vref
POWER SUPPLY

MECHANICAL DIMENSIONS, mm (in)
FAR-1 Power Supply
Specifications
Power Supply
Voltage : 230 or 115 Vac. ±10 %
Frequency : 50/60Hz.
Output Excitation Voltage : +10 Vdc.
Excitation Adjustment : 6% by internal trimmer.
MaximumCurrent : 250 mA.
OutputRipple@Imax : 0.02%Tip.
Loadregulation : 0.1%
Tempco : 0.01%/ºCoperatingrange
from 0 to 60ºC after 30 minutes
warm-up
Maximumleadwire
resistance compensation : 10 Ω maximum
StorageTemperature : -30º to 60ºC (-22º to 176ºF)
OperatingTemperature : 0º to 60ºC (32º to 140ºF)
Physical
Weight: 350gr(0.77lb)
Enclosure : Polycarbonate,RAL7032,
UL 94 V-1, light grey, IP-40
Terminalhousing : Polycarbonate,UL94V-2,
darkbrown,IP-20
Terminals : Sheet steel, tinned
MaximumRecommended
Section Wire : 4 mm²
DINRailMountingtoDIN46277andDINEN50022
(35 x 7.6 mm) (1.38" x 0.30")
WARRANTY/DISCLAIMER
OMEGA warrants this unit to be free of defects in materials and workmanship and to give
satisfactoryserviceforaperiodof13monthsfromdateofpurchase.OMEGAWarrantyaddsan
additional one(1) month grace periodto the normal one (1) year product warranty tocover
handlingandshippingtime.ThisensuresthatOMEGA'scustomersreceivemaximumcoverage
oneachproduct.Iftheunitshouldmalfunction,itmustbereturnedtothefactoryforevaluation.
OMEGA'sCustomerServiceDepartmentwillissueanAuthorizedReturn(AR)numberimme-
diatelyupon phone orwrittenrequest.Upon examinationbyOMEGA,if the unitisfoundto be
defectiveitwillberepairedorreplacedatnocharge.However,thisWARRANTYisVOIDifthe
unitshowsevidenceofhavingbeentamperedwithorshowsevidenceofbeingdamagedasaresult
of excessive corrosion; or current; heat; moisture or vibration; improper specification;
misapplication;misuse orotheroperatingconditionsoutsideofOMEGA'scontrol.Components
whichwearorwhicharedamagedbymisusearenotwarranted.Theseincludecontactpoints,
fusesandtriacs.
.
OMEGA is pleased to offer suggestions on the use of its various products.
However OMEGA neither assumes responsability 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.
OMEGAonly warrants that the parts manufacturedbyit will be as specified and
free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTA-
TIONSOFANYKINDWHATSOEVER,EXPRESSEDORIMPLIED,EXCEPTTHAT
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
liabilityis based. Inno even shall OMEGAbe liable forconsequential, incidental
orspecial damages.
CONDITIONS:Equipment soldbyOMEGAisnotintendedtobeused,norshallitbeused:(1)as
a"BasicComponent"under10CFR21(NRC),usedinorwithanynuclearinstallationoractivity;
or(2)inmedicalapplicationsorused onhumans.ShouldanyProduct(s)beusedinorwithany
nuclear installation or activity, medical application, used in humans, or misused in any way.
OMEGA assumes no responsibility as set forth in our basic WARRANTY/DISCLAIMER lan-
guage,and,additionally,purchaserwillindemnifyOMEGAandholdOMEGAharmleesfromany
liabilityordamagewhatsoeverarisingoutoftheuseoftheProduct(s)insuchamanner.

An O M EGA Tech nologies Com p an y
Servicing USA and Canada: Call OMEGA Toll Free
USA Canada
OneOmegaDrive,Box4047 976Bergar
Stamford,CT06907-0047 Laval(Quebec)H7L5A1
Telephone:[phone] Telephone:[phone]
FAX:[phone] FAX:[phone]
SalesService:1-800-826-6342/1-800-TC-OMEGASM
CustomerService:1-800-622-2378/1-800-622-BESTSM
EngineeringService:1-800-872-9436/1-800-USA-WHENSM
TELEX:996404 EASYLINK:62968934 CABLE:OMEGA
Servicing Europe: One OMEGA Drive, River Bend
Thecnology Centre
Northbank,Irlam,Manchester
M44 5EX,England
Telephone:[phone] FAX:[phone]
RETURNREQUESTS/INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA ENGINEERING Customer
ServiceDepartment.BEFORERETURNINGANYPRODUCT(S)TOOMEGA,PURCHASER
MUSTOBTAINANAUTHORIZEDRETURN(AR)NUMBERFROMOMEGA'SCUSTOMER
SERVICEDEPARTMENT(INORDERTOAVOIDPROCESSINGDELAYS).TheassignedAR
numbershouldthenbemarkedontheoutsideofthereturnpackageandonanycorrespondence.
FOR WARRANTY RETURNS, please
have the following information available
BEFORE contacting OMEGA:
1. P.O. 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
OMEGAforcurrentrepaircharges.Havethe
followinginformationavailableBEFORE
contactingOMEGA:
1. P.O.numbertocovertheCOSTofthe
repair,
2. Modelandserialnumberof product,and
3. Repairinstructionsand/orspecific
problemsrelativetotheproduct.
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 1998 OMEGA ENGINEERING, INC. All rights reserved. This documentation
may not be copied, photocopied, reproduced, translated, or reduced to any electronic
medium or machine-readable form, in whole or in part, without prior written consent of
OMEGA ENGINEERING, INC.
45
(1.77)
35.5
(1.40)
75
(2.95)
110
(4.33)
5 (0.20)