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Specications
Terminal Connection Terminal Connection
A1 Channel 1 Output (+) C1 Not Connected
A2 Channel 1 Output (-) C2 Not Connected
A3 Not Connected C3 Not Connected
A4 Not Connected C4 Not Connected
A5 Not Connected C5 Channel 1 Input (-)
A6 Not Connected C6 Channel 1 Input (+)
Terminal Connection Terminal Connection
A1 Channel 1 Output (+) C1 Not Connected
A2 Channel 1 Output (-) C2 Channel 2 Input (-)
A3 Not Connected C3 Channel 2 Input (+)
A4 Channel 2 Output (+) C4 Not Connected
A5 Channel 2 Output (-) C5 Channel 1 Input (-)
A6 Not Connected C6 Channel 1 Input (+)
Terminal Connection Terminal Connection
A1 Channel 1 Output (+) C1 Not Connected
A2 Channel 1 Output (-) C2 Channel 2 Input (-)
A3 Not Connected C3 Channel 2 Input (+)
A4 Channel 2 Output (+) C4 Not Connected
A5 Channel 2 Output (-) C5 Channel 1 Input (-)
A6 Not Connected C6 Channel 1 Input (+)
B1 Channel 3 Output (+) D1 Not Connected
B2 Channel 3 Output (-) D2 Channel 4 Input (-)
B3 Channel 4 Output (+) D3 Channel 4 Input (+)
B4 Channel 4 Output (-) D4 Not Connected
D5 Channel 3 Input (-)
D6 Channel 3 Input (+)
Input Range:
0(4) to 20mA, 30VDC max, each channel
Voltage Drop: 6V (300 ohms), plus output load
Output Range:
0(4) to 20mA,
Drive: 10V or 500 ohms maximum @ 20mA, 100 ohms minimum
Output Accuracy:
Better than +0.2% of full-scale, including linearity, hysteresis and
repeatability, maximum
Linearity:
0.1% of span typical, from 4 to 20mA at 250ohm load
Stability:
±0.02%/oC of span max. for full-scale and zero
Load Regulation:
±0.1% of span, typical per 10 ohm change
Common Mode Rejection Ratio:
> 100dB (DC to 60Hz)
Isolation:
1800VDC, input to output and channel to channel.
ESD Susceptibility:
Capable of meeting IEC 801-2 level 3 (8kV)
Response Time:
50mSec typical, 100mSec max 10 to 90% (each channel)
Temperature:
Operating: -40 to 80oC (-40 to 176oF)
Storage: -40 to 80oC (-40 to 176oF)
Humidity (non-condensing):
DRI-LPI-MA (One Channel)
DRI-LPI-2MA (Two Channels)
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: (203) 359-1660
Fax: (203) 359-7700
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
25 to 95% (@40oC)
Wire Terminals:
Socketed screw terminals for 12-22 AWG
Weight:
0.34lbs
Agency Approvals:
UL recognized per standard UL508 (File No.E99775).
CE conformance per EMC directive 89/336/EEC and Low voltage
73/23/EEC.
DRI-LPI-4MA (Four Channels)
Dimensions
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.
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
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.
DRI-LPI SERIES
Input Loop Powered
DIN Rail Multi-Channel Isolators
INSTRUCTION
SHEET
Shop online at omega.comSM e-mail: [email protected]
For latest product manuals: www.omegamanual.info
Up to 4 Loop Isolators in a Single Package
Prevents Ground Loops
High Density DIN Rail Mounting
Description
The DRI-LPI Series is a DIN rail mount, loop-powered isolator
with single, dual or quad (4) channel capability. Each channel
accepts a 0-20mA or 4-20mA input and outputs a proportional
0-20mA or 4-20mA signal. The DRI-LPI Series provides
1800VDC signal isolation from input to output and channel to
channel.
The DRI-LPI Series features plug-in screw terminals for easy
installation and low Mean-Time-To-Repair (MTTR). Two or
more modules can slide together and interlock for solid, high
density mounting. This is accomplished by removing either the
foot or the adjacent unit's faceplate (for right-hand side or lefthand side mounting, respectively). The module to be attached
will easily slide on to the side of the mounted unit.
Application
Loop-powered isolators are used to isolate process signals
transmitted between eld instrumentation, Programmable Logic
Controllers (PLC), Distributed Control Systems (DCS) and Data
Acquisition Systems (DAS). Outputs from these systems can
also drive one or more isolator channels of the DRI-LPI Series.
Field devices such as ow, level or temperature transmitters
can also drive a DRI-LPI Series isolator channel. The 1800VDC
isolation capability prevents ground loops from causing errors
in 4-20mA current signals and can reduce susceptibility to
Radio Frequency Interference (RFI). Isolation also provides
protection from high voltages and current spikes which can
damage expensive Supervisory Control And Data Acquisition
(SCADA) equipment, such as a PLC or DCS.
M5479/0815
Provides up to 4 Isolated DC Current Outputs in
Proportion to the Input Currents
Plug-in Terminals
ASIC Technology
Operation
The DRI-LPI Series operates as a loop-powered isolator, with
each channel deriving its power from the input loop current, 0(4)20mA. The effective load of a DRI-LPI Series isolator channel on
a loop is 300 ohms plus the output load resistance. For example,
if the load on an output of the DRI-LPI Series is 500 ohms, then
the current loop connected to the input would need to drive 300
ohms plus 500 ohms (i.e. 800 ohms) at a maximum current of
20mA, or 800 ohms x 20mA which equals 16.0V.
The DRI-LPI Series is protected from reverse input polarity and
output short circuit. A span pot is provided for each channel in
order to calibrate the output to the load.
Calibration
1. Connect the input to a calibrated milliamp source. Connect
the output to the actual device or to a load (between 100 and
500 ohms) equivalent to the actual device. Monitor the output
current with a milliamp meter in series with the load or monitor
the voltage across the load.
2. Set the calibrator to 20mA and adjust the span potentiometer
for 20mA output.
3. Set the calibrator to 4mA and conrm that the output is 4mA.
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