Omega DRI-DC User manual

Specications
Inputs:
Voltage:
Range Limits: 10mV to 100V (see Table 1)
Impedance: >100k ohms
Overvoltage: 200V continuous
Current Input:
Range Limits: 1mA to 100mA
Impedance: 20 ohms typical
Overcurrent: 170mA, protected by self resetting fuse
Overvoltage: 60V
Pushbutton Adjustment (inputs>10mV)
Effective zero offset: > 90%
Effective span turn down: > 90% except 20mV/2mA range in
which 50% is max. zero offset and span turndown
Outputs:
Voltage:
Output: 0-5V, 0-10V
Source Impedance: <10 ohms
Drive: 10mA max.
Current:
Output: 4-20mA, 0-1mA, 0-20mA (DRI-DC only)
Source Impedance: >100k ohms
Compliance:
0-1mA: 7.5V max. (7.5k ohms)
4-20mA: 12V max. (600 ohms)*
0-20mA: 12V max. (600 ohms)
*10V max. (500 ohms) on dual out version
Output Ripple:
<50% offset or span adjust:<0.1% off full scale span or 25mV
RMS, whichever is greater
>50% offset or span adjust:<0.2% of full scale span or 50mV RMS,
whichever is greater.
Output Accuracy:
>2mA / >20mV input spans:
+0.1% of full-scale input typical, +0.2% maximum
<2mA / <20mV input spans:
+ 0.35% of fullscale input typical, + 0.5% maxmum; including
linearity, repeatability and hysteresis @23C.
Response Time: 200mSec, typical
Stability: +0.025% of full scale /C, maximum for fullscale and zero
Common Mode Rejection: 120dB at DC, >90dB at 60Hz
Isolation: > 1800VDC or peak AC between input, output, power
and channel to channel
ESD Susceptibility: Capable of meeting IEC 801-2 level 3(8kV)
Humidity (non-condensing):
Operating: 15 to 95% RH @45°C
Soak: 90% RH for 24 hours @60°C
Temperature:
Operating: 0 to 55°C (32 to 131°F)
Storage: -25 to 70°C (-13 to 158°F)
Power: 2.5W max; 100 to 240VAC, +10%, 50 to 400Hz
Wire Terminals: Socketed screw terminals for 12-22 AWG
Agency Approvals:
UL recognized per standard UL508 (File No. E99775).
CE compliance per EMC directive 89/336/EECand low voltage 73/23/EEC.
Dimensions
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
omega.com [e-mail]
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.
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 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.
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
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 customers 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.
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.
Description
The model DRI-DC and DRI-SP-AC are AC powered, DIN
rail mount, DC input signal conditioners, with 1800V isolation
between input, output and power. The eld congurable input
and output feature offers exible, wide ranging capability for DC
current and voltage signals.
The DRI-DC is a single channel signal conditioner (1 input/1
output) and the DRI-SP-AC is a multi-channel signal conditioner
(1 input/2 outputs). Both models maintain the high 1800V
isolation level from channel to channel, as well as input to
output to power.
Touch Calibration Technology
Using a pushbutton instead of potentiometers, improvements
in calibration resolution and reliability are realized due to the
elimination of the potentiometers’ mechanical variability. The
thermal drift and mechanical variability of the potentiometers
has been removed and replaced with a digitally stable circuit.
Additionally, the inherent zero and span interactivity of analog
amplier circuitry is removed, providing 100% non-interactive
adjustment.
The DRI-DC and DRI-SP-AC can be eld congured for virtually
any DC input to DC output within the limits specied. Calibration
utilizes Touch Calibration technology where the user simply
congures the input for the current or voltage range via switches,
then follows the Calibration Flow Chart. The output is set by
adjusting the input until the desired output is present and then
pressing the CAL button to store the output level.
Diagnostic LEDS
The DRI-DC and DRI-SP-AC have 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 (IN) LED is on while calibrating the input and the red
Provides 1 or 2 Fully Isolated DC Output Signals
in Proportion to 1 or 2 DC Inputs
 Field Congurable Input Ranges
 Field Congurable Output Ranges
1800VAC Isolation
Touch Calibration Technology
High Density DIN Rail Mounting
Universal AC Power 85 to 265 VAC
 Plug-in Terminals
(OUT) LED is on while calibrating the output.
Conguration
The DRI-DC and DRI-SP-AC can be congured for input ranges
from 10mV to 100V or 1mA to 100mA, with >90% input offset
or will adjust down to <10% of full scale input span (except on
20mV/2mA range where maximum offset or gain adjustment
is 50%). Unless a specic custom calibration is specied, the
factory presets the Model DRI-DC and DRI-SP-AC as follows:
Input Range: 20mA (Current on)
Input Conguration: Unipolar
Calibrated Input: 4-20mA
Operation: Direct (Reverse off)
Calibrated Output: 4-20mA
For other I/O ranges, refer to the tables below.
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. The single channel module has two eight position switch
blocks, one for input and one for output. The dual output modules
have a second board behind the heatsink. Gently lift this board
away from the main board, rocking it back while lifting. The one
input, two output module has one ten position switch block for
input and channel 1 output, along with a two position switch for
the second output.
3. For single channel modules, choose the desired input,
function and output range from Table 1, 2, and 3. For multi-
channel modules, use Table 4. Set the dip switches for the
desired I/O.
DRI-DC and DRI-SP-AC
AC Powered DC Input
DIN Rail Multi-Channel Signal Conditioner
M5477/0715
INSTRUCTION
SHEET
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Calibration
Note: For best results, calibration should be performed with the
intended output load, in the operating environment, mounted
on a DIN rail, allowing at least one hour for thermal equilibrium
of the system.
1. Install the module on to a piece of DIN rail and the ACPB rail
mounting combination. See the ACPB rail Data sheet for details.
Note: An ACPB rail is required to deliver power to the modules.
See ordering information.
2. Connect the input to a calibrated DC source and the output
to a voltage or current meter. Apply power and allow the system
to reach thermal equilibrium (approx. 20 minutes).
3. Adjust the input signal to the desired maximum and observe
that the green LED is on or ashing. Push the CAL button and
hold it down for more than 5 seconds (until the yellow and Green
LEDs are ashing).
Figure 1: Input Connection
Figure 2: DRI-DC and DRI-SP-AC Calibration Flow Chart
Type Selector SW1
5 6 7 8
Unipolar - - -
Bipolar - - -
Reverse - - -
Direct - - -
Current - - 
Voltage - - 
Key: = 1 = ON or Closed; - = n/a
Ranges Selector SW1
Voltage Current 1 2 3 4
20mV 2mA  
50mV 5mA 
100mV 10mA  
200mV 20mA  
500mV 50mA   
1V 100mA 
2V  
5V   
10V  
25V   
50V   
100V    
Key: = 1 = ON or Closed
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
Table 1: Input Range Settings for Single Channel Module
(DRI-DC)
Table 3: Output Range Settings for Single Channel Module
(DRI-DC)
Table 2: Input Function Settings for Single Channel Module
(DRI-DC)
Table 4: I/O Range & Function Settings
for Dual Channel Module (DRI-SP-AC)
Figure 1: Input Connection
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 be on).
Note: To quit the calibration mode and reset the unit, push the
CAL button and hold for more than 5 seconds. Or, wait for more
than two minutes and the unit will timeout and reset itself to the
previously stored calibration.
5. Apply the maximum input signal level desired, and push the
CAL button to store (the yellow LED will be on).
6. Apply the minimum input signal level desired, and push the
CAL button to store (the green and red LED will 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. Push the CAL button one nal time to store the calibration data.
The green LED will be on if the input is within the calibrated range.