Omega SMSC-2 User guide

Specications

Input:

 VoltageInput(eldcongurable):
  FullScaleRange:10mVto100V
  Impedance:>100KOhms
  Overvoltage:
   400Vrms,max(Intermittent);
   264Vrms,max(Continous)
 CurrentInput(eldcongurable):
  FullScaleRange:1mAto100mA
  Impedance:20Ohms,typical
  Overcurrent:170mArms,max
  Overvoltage:60VDC
 CommonMode(InputtoGround):
  1500VDC,max

Zero Turn-Up:

 50%offullscalerange

Span Turn-Down:

 50%offullscalerange

Output:

 VoltageOutput:
  Output:0-5V,0-10V
  Drive:10mA,max.(1KOhmsmin.load

 @10V)
 CurrentOutput:
  Output:0-1mA,4-20mA
  Compliance:
   0-1mA:10V,max(10KOhmsmaxload)

  4-20mA:20V,max(1KOhmsmaxload)

Pin Connections

 1 Power(Hot)
 2 SpareTermination
 3 Power(Neu)
 4 OutputB(+)
 5 InputA(+)
 6 InputA(-)
 7 OutputA(+)
 8 OutputA(-)
 9 OutputB(-)
 10 InputB(+)
 11 InputB(-)

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.com info@omega.

Servicing North America:

U.S.A.:

Omega Engineering, Inc., One Omega Drive,
P.O. Box 4047, Stamford, CT 06907-0047 USA
Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378
(USA & Canada only)
Engineering Service: 1-800-872-9436
(USA & Canada only)
Tel: [phone]
Fax: [phone]
e-mail: info @omega.com

For Other Locations Visit
omega.com/worldwide

The information contained in this document is
believed to be correct, but OMEGA accepts no
liability for any errors it contains, and reserves
the right to alter specifications without notice.

com

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
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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.

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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 WARRANTY RETURNS, please have the following
information available BEFORE contacting OMEGA.

1. Purchase order number 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 custo mers the late st
technology and engineering. OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© COPYRIGHT 2015 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, translated, or reduced to
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LED Indication (green):

 InputRange:
  >110%input:8Hzash
  <-10%input:4Hzash

Accuracy (Including Linearity, Hysteresis):

 <20mV,<2mA:±0.35%offullscale, 

typical,0.5%,max

 >20mV,>2mA:±0.1%offullscale,typical,

0.2%,max

Response Time:

(10-90%)200mSec.,typical

Stability (Temperature):

 ±0.025%offullscale/°C,typical,
 ±0.05%/°C,max.

Common Mode Rejection:

 DCto60Hz:120dB

Isolation (Input to Output):

 1500VDCbetweenchannels,input, 

outputandpower

WARRANTY/DISCLAIMER

RETURN REQUESTS/INQUIRIES

FOR NON-WARRANTY RETURNS, 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.

ESD Susceptibility:

 Level2(4KV)

Humidity (Non-Condensing):

 Operating:15to95%(@45°C)
 Soak:90%for24hours(@65°C)

Temperature Range:

 Operating:-15to60°C(5to140°F)
 Storage:-25to70°C(-13to158°F)

Power:

 Consumption:
  4Wtypical,6Wmax
 Standard:
  selectable120/240VAC,±10%,50-

 60Hz

Weight: 0.66lbs
Approvals:

ULrecognizedperstandardUL508
 (FileNo.E150323/E99775).

SMSC-2

DC Input, Dual Channel
Signal Conditioner

INSTRUCTION

SHEET

Shop online at omega.comSM e-mail: [email protected]
For latest product manuals: www.omegamanual.info

ProvidesTwoIndependent,FullyIsolatedDCOutputsinProportiontoTwoDCInputs

 HighDensity2-ChannelPackage
 EliminatesGroundLoopswith1500VIsolation
 SixCongurableOutputRanges:0-5V,0-10V,

0-1mA,4-20mA,-5to5Vand-10to10V

Description

The eld congurableSMSC-2 series dualchannel isolators
offerwideranging input and outputcapability for scaling and
transmittinganalogDCsignals.TheSMSC-2serieswillaccept
inputvoltagespansfrom10mVupto100volts,aswellasinput
currentspansfrom1mAto100mA.Forafullscaleoutputrange,
theinputzeroandspanpotentiometersenable50%inputzero
andspanadjustability.Forexample,the0-10Vinputrangecan
beelevatedto5-10Vorcompressedto0-5V.

TheSMSC-2offers4popularouputrangeswhicharepositive
voltagesandcurrents(e.g.0-5V,0-10V,0-1mAand4-20mA).
Themodelnumberdenestheouputchannelrangesasshown
inTable1.

The4-20mAcomplianceisapowerful20VDCperchannel.The
SMSC-2 accepts bipolar inputs and each I/O channel offers
selectablenormalorreverseactingoperation(e.g.4-20mAor
20-4mA).

EachSMSC-2isa dual, three-port, industrial isolator --  both
outputchannelsareopticallyisolatedfromtheirrespectiveinput
channelsupto1500VDC.ThetwoASIC-basedI/Ochannels
are independently transformer isolated from the selectable
120/240VACpowersupply.

Table1:SMSC-2SeriesOutputRanges

(Bold indicatesfactorypresetranges)

Model

SMSC-2

Channel Output Selections

A

B

M5482/0715

0-5V, 0-10V, 0-1mA, 4-20mA

0-5V, 0-10V, 0-1mA, 4-20mA

 Plug-inInstallation
 Selectable120/240VACInputPower

Application

TheSMSC-2eldcongurableisolatorsisusefulineliminating
groundloops,convertingsignallevelsandprovidingsignaldrive.
TheSMSC-2series'dualchanneldesignconservesinstallation
space in high density applications and offers superior cost­benetvalueoversinglechannelisolators.Thewiderangingca­pabilityoftheSMSC-2providesuniversalsparepartcoverage.

Diagnostic LED

TheSMSC-2seriesisequippedwithdualfunctionLEDsignal
monitors. The green, top-mounted LED indicates linepower
andinput signal status. Active linepower is indicatedby an
illuminatedLED.Iftheinputsignalis10%abovethefullscale
range,theLEDwillashat8Hz.Below0%,theashrateis4Hz.

Option

U

 Urethanecoatingofinternalcircuitryforprotection

fromcorrosiveatmospheres.

Conguration

EachchanneloftheSMSC-2seriescanbeindependentlyset
forawidevarietyofinputandoutputranges.

Factory Presets

ThefactorypresetstheSMSC-2inputandoutputto4-20mA(as
showninTable1andFigure1).Thesupplypoweriscongured
for120VACoperation.ForotherI/Oranges,removethefourbase
screwsandcasetoaccesstheI/Ocards.

Refer to gures 1 & 2 for conguration and program the I/O
channelsasdesired.

Replacethecoverbeforeapplyingpower.

Input

1.Positioninputjumper“W1”forCurrent(I)orVoltage(V)input.

W1

Current

W1

Voltage

2.Set position 5 of the Input Range Selector for Unipolar or
Bipolarinputoperation.

>

1

4

2 3

Unipolar

5

>

4

6

5

6

2 3

1

Bipolar

Note:AbipolarrangeselectionwilldoubleanyrangefromTable
2(e.g,10Vspan=±10Vbipolarspan)

3.Setposition6oftheInputRangeSelectorforNormalorRe­verseoperation.Reverseactingproducesadecreasingoutput
withanincreasinginput.

ON

>

1

2 3

Normal

4

5

ON

>

6

2 3 465

1

Reverse

4. Using Table 2, congure positions 1 through 4 of the Input
RangeSelectorforthedesiredmaximuminput.Roundthedesired
maximuminputvaluetothenexthighestrange(e.g.,0-70V=100V
range).

WARNING:Donotchangeswitchsettingswithpowerapplied.
Severedamagewillresult.

Output

1.FortheSMSC-2channelsAandBuseTable3tocongure
the output selector switches for one of the four(4) standard
outputranges.

Power

1.ConguretheACjumpersforeither120or240VACopera­tion.SeeFigure3.

Calibration

1.ConnecttheinputtoacalibratedDCvoltageorcurrentsource
andapplypower.RefertoPINCONNECTIONS.Wait1hourfor
thermalstabilitybeforemonitoringthevoltage/currentoutput.

2.Setthecalibratortothedesiredminimuminputandadjustthe
Zeropotentiometerforthedesiredminimumoutput.

3.Setthecalibratortothedesiredmaximuminputandadjust
theSpanpotentiometerforthedesiredmaximumoutput.

4.Repeatsteps2and3forbestaccuracy.

Table2:SMSC-2SeriesInputRanges

Voltage* Current*

 20mV 2mA

 50mV 5mA

 100mV 10mA

 200mV 20mA

 500mV 50mA

 1V 100mA

2V

 5V

 10V

 25V

 50V

 100V

*Usejumper(W1)tocongureeithervoltageorcurrentinput.

Allunipolarrangesarezerobased.

Input Range

Selector (SW1)

ON

>

2 3 4

1

ON

>

1

ON

>

1

ON

>

1

>

1

ON

>

1

ON

>

1

ON

>

1

ON

>

1

ON

>

1

ON

>

1

ON

>

1

2 3 4

2 3 4

2 3 4

2 3

2 3 4

2 3 4

2 3 4

2 3 4

2 3 4

2 3 4

2 3 4

4ON5

5

6

5

6

6

5

5

6

6

6

5

6

5

6

5

6

5

6

5

6

5

6

5

Table3:SMSC-2OutputRanges

Range

Output Range

Selector (SW2)

ON

 0to10V

 0to5V

 0to1mA

 4to20mA

>

2 3 4

1

ON

>

2 3 4

1

ON

>

2 3 4

1

ON

>

2 3 4

1

6

5

6

5

6

5

6

5

I/O Card Conguration

Diagnostic

LED

ON

ON

>

4

2 3

1

>

2 3

1

6

5

4

6

5

Input Range

Selector (SW1)

Output Range

Selector (SW2)

Span

Zero

Top

Figure1:SMSC-2I/Ocardfactorycalibration:

4-20mAinputand4-20mAoutput

Warning:Donotchangeswitchsettingswithpowerapplied.
Severedamagewillresult!
Warning: ApplyingvoltagetotheinputwithW2incurrent(I)
positionwillresultindamagetotheunit.

Top View Diagrams

Mounting

Allmodulesfeatureplug-ininstallation.ModelSMSC-2usesan11-pin
baseandeithermoldedsocketSKT-SM-11PorDINsocket
SKT-DR-11Pformounting.

Dimensions

Dimensionsareinmillimeters(inches)

W1

I/V Input Selection

V

I

Warning:

Donotchangewithpowerconnected!

SKT-SM-11P (Track/Surface)

Mark II

SKT-DR-11P (DIN Rail)