Omega DRI-AC User guide

Output :

Terminal Connection Terminal Connection

A1 Output (+) C3 Input Voltage (Line)

A2 Output (-) C4 Not Used

A3 Not Used C5 Input (Neutral)

A4 Not Used C6 Input Current (Line)

A5 Not Used P1 AC Power (Hot)

A6 Not Used P2 Not Used

C1 Not Used P3 Not Used

C2 Not Used P4 AC Power (Neutral)

Voltage:
Output: 0-5V, 0-10V
Source Impedance: <10 ohms
Drive: 10mA, max. (1K ohms, min. @ 10V)
Current:
Output: 0-1mA, 0-20mA, 4-20mA
Source Impedance: >100K ohms
Compliance:
0-1mA; 7.5V, max. (7.5K ohms, max.)
0-20mA; 12V, max. (600 ohms, max.)
4-20mA; 12V, max. (600 ohms, max.)
LED Indication
RUN (green):
On when unit is powered

  ashesat8Hzwheninputis7%abovemax.

INPUT (yellow):

  Onwhilecalibratingtheinputlevel

OUTPUT (red):

  Onwhilecalibratingtheoutputlevel

Accuracy (Including Linearity & Hysteresis):
+0.1%ofspan,typical,+0.2%max.
+0.5%ofspan,maximum(100mVrange)
Stability:
+0.025%/°Cofselectedinputspan,typical.

Response Time (10 to 90%):

250mSec., typical.

Common Mode Rejection:

 DCto60Hz:90dB

Isolation:

 1800VDCbetweeninput,outputandpower.

EMC Compliance (CE Mark):

 Emmissions:EN50081-1;Immunity:EN50082-2;Safety:

EN50178

Humidity (Non-Condensing):

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

Temperature Range:

 Operating:0to55°C(32to131°F)
 Storage:-25to70°C(-13to158°F)

Power:
Consumption: 1.5W typical, 2.5W max.

 Range:100to240VAC±10%,50to400Hz

Wire Terminations:

 Screwterminalsfor12-22AWG

Shipping Weight:

 0.48lbs.

Agency Approvals:

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

CEComplianceperEMCdirective89/3/36EECandLowVoltage73/23/EEC.

Dimensions

DRI-AC

AC Powered AC Input
DIN Rail Signal Conditioner

INSTRUCTION

SHEET

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



 EliminatesGroundLoops

 FieldCongurableInputRanges
 FieldCongurableOutputRanges
 TouchCalibrationTechnology

Description

The DRI-AC is a DIN rail mount, AC input signal conditioner

with1800VDCisolationbetweeninput,outputandpower.The
eldcongurableinputandoutputoffersexible,wideranging
capabilityforscaling,convertingorbufferingACinputsranging
from5mAto100mAACor50mVto300VAC.

For current inputs above 100mA, it is recommended that an
inputshuntresistorbeusedandtheDRI-ACbeconguredfor
theproperinputrange.Forexample,a5Acurrenttransformer

output can use the C006 shunt resistor (0.1 ohm, 5W) with the

inputoftheDRI-ACsetfor0-500mVAC.

The DC output of the DRI-AC is proportional to the average
ofthe fully-rectiedACinputsignal,and iscalibratedforsine
wavesbetween40-400Hz.

M5475/0715

Provides an Isolated DC Output

in Proportion to an AC Input

 DIN Rail Mounting with IQRL
 UniversalACPower85to265VAC
 Plug-in Terminals

scaleoutput.Inputrangessuchas180-200Vor0-20Varepossible

using the 0-200V range.

Advanceddigitaltechnologycombinedwith ASIC technology
allowstheDRI-ACtobeeld congured for virtually any AC
inputtoDCoutputwithinthelimitsspecied.

Application

The DRI-AC is useful in applications requiring an isolated,
conditionedDCoutputfromanACsignal.Typicalapplications
includeenergymanagement,loadshedding,motorcurrent/load
monitoring,lockedrotordetection,isolationanddataacquisition.
Theoutputofthe DRI-AC can drive adigitalmeterfordirect
displayorcaninterfacewithalarmorcontroldevicesincluding

PLCs and computers.

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 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
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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 latest
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
any electronic medium-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

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.

Touch Calibration Technology

TheDRI-ACutilizesTouchCalibrationtechnologywhichgreatly
simplies calibration. The thermal drift and mechanical vari­abilityofthe potentiometershasbeen removedandreplaced
with a digitally stable circuit. Once the unit is congured via
DIPswitchesforvoltageor current,thepushbuttonisused to
preciselycalibratetheminimumandmaximumlevels.

Tosettheinput level within the dipswitchconguredrange,

simply apply the high input signal (voltage or current) and push

theCALbutton.Thelowinputsignalisthenappliedandpush­ingtheCALbuttonagainstoresthelowinputsignal.Thehigh

and low input levels are stored in nonvolatile memory and cor­respond to the high and low output levels. These output levels
are precisely adjusted using the input signal.

Touch Calibration technology enables precise calibration and
providesmorethan90%offsetofthezerovalueandadjustment
downto10%ofthefullscaleinputspanformostofthe16switch
selectable input ranges. For example, the dipswitch congured
0-200Vinputrangecouldbecalibratedviapushbuttonfor0-80V
(i.e.60%spanreduction)oroffsettoarangeof120-200V(i.e.
60%offsetand60%spanreduction).Iftheoutputwascongured
for0-10V,then120-200Vinputwouldcorrespondtothe0-10Vfull

Diagnostic LEDS

The DRI-AC has three diagnostic LEDs. The green (RUN) LED

isusedfordiagnosticstoindicatethatpowerison.Itwillash
quicklyiftheinputsignalisabovethecalibratedrangeorslowly
iftheinputsignalisbelowrange.Itisoncontinuouslywhenthe
unitisfunctioningwithinthecalibratedrange.

Theyellow(INPUT)LEDisonwhilecalibratingtheinputlevel.
Thered(OUTPUT)LEDisonwhilecalibratingtheoutputlevel.

Conguration

The DRI-AC can be congured for input ranges from 50mV
to300Vor5mAto 100mA,with>90% inputoffset orit will
adjust down to <10% of full scale input span (except on the
100mV/10mArangein which maximumoffsetorgain adjust­mentis50%).

Unless a specic custom calibration is specied, the factory
presetstheDRI-ACasfollows:

Input Range: 0 -500mV

CalibratedOutput: 4-20mA
ForotherI/Oranges,refertothetables.

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

1. Withpower off,snapoffthefaceplatebyliftingtheright edge
away from the heatsink. Slide theheatsink forward and off the

module.

2.ChoosethedesiredrangefromTables1-3.Returntheheatsink
to its original position and attach the faceplate before beginning
calibration.

Calibration

Forbestresults,calibrationshouldbeperformedintheoperating
installation,allowingatleastonehourforthermal stabilityofthe
system. If pre-calibration on a test bench is preferred, then an
outputloadequaltotheinputimpedanceofthedeviceconnected

to the DRI-AC output is recommended, along with a 1 hour warm
up period.

1.ForbestresultsinstallthemoduleontoapieceofDINrailor
theACPBrailmountingaccessoriesifdesired.SeetheACPB
railDatasheetfordetails.

Note:AnACPBrailisrequired to  power the modules.See
orderinginformation.

2.ConnecttheinputtoacalibratedACsourceandtheoutput

to a voltage or current meter. Apply power and allow the system

toreachthermalequilibrium(approx.20minutes).

holditdownformorethan5seconds(untiltheyellowandGreen
LEDsareashing),thenreleasethebutton.

Note:Toquitthecalibrationmodeandresettheunit,pushand
holdtheCALbuttonformorethan5seconds.Or,waitformore

than two minutes and the unit will timeout and automatically

resettothepreviouslystoredcalibration.

4.WhentheyellowandgreenLEDsstopashing,theyellow
andredLEDswillbeon.PushtheCALbuttonmomentarily(the
yellowandgreenLEDswillnowbeon).

5. Apply the maximum input signal level desired and push the

CALbuttontostore.TheyellowLEDwillnowbeon.

6. Apply the minimum input signal level desired and push the

CALbuttontostore.ThegreenandredLEDwillnowbeon.

7. Adjust the input signal while monitoring the output signal until
the output is at the desired maximum level (e.g. 20.00mA), then

pushtheCALbuttontostore(theredLEDwillbeon).

8.Adjusttheinputsignalwhilemonitoringtheoutputsignaluntil

the output is at the desired minimum level (e.g. 4.00mA), then

pushthe CALbuttontostore(theyellow,greenandred LEDs
willbeon).

9.Tonishcalibration,pushtheCALbuttononceagain.The
greenLEDwillbeoniftheinputiswithinthecalibratedrange.

3.Adjusttheinputsignaltothedesiredmaximumandobserve
thatthegreenLEDisonorashing.PushtheCALbuttonand

Table1:InputRangeSettings

Ranges Selector SW1

AC Voltage AC Current 1 2 3 4 5 6 7

100mV 10mA

200mV 20mA

500mV 50mA

1V 100mA

2V

5V

10V

20V

50V

100V

200V

300V

Key:  = 1 = ON or Closed

   

  

   



 

  

 

  

   

  

   

   

Table2:OutputRangeSettings

Ranges Selector SW2

Output 1 2 3 4 5 6 7 8

0 to 5V

0 to 10V

0 to 1mA

4 to 20mA

0 to 20mA

Key:  = 1 = ON or Closed

   

  

  

  

    

Figure1:Loadmonitoringusingacurrent

transformerandtheDRI-AC

Table3:InputTypeSettings

Current

Voltage

SW1

8



Input Type

Key:  = 1 = On or Closed

Specications

Inputs:

Voltage:

  Ranges:100mVACto300VAC

Impedance: >100K ohms

  Overvoltage:330VAC

Current:
Ranges:10mAAC to 100mAAC
Impedance: 20 ohms, typical

Figure2:DRI-ACCalibrationFlowChart

Overcurrent: 170mAAC
Overvoltage: 60V peak

 FrequencyRange:
  40Hzto400Hz,factorycalibratedat60Hz
 CommonMode(InputtoGround):
  1800VDC,max.
 PushbuttonAdjustment:
  Max.zerooffsetandspanturndownis50%