The DMD4380 is a field-rangeable signal isolator/transmitter/converter. It accepts a DC voltage or current input and provides an
optically isolated DC voltage or current output that is linearly related
to the input. Full 3-way isolation (input, output, power) makes this
module useful for ground loop elimination, signal conversion and
isolation, common mode signal rejection, or noise pickup reduction.
Standard on the DMD4380 is a 15 VDC loop excitation supply for the
input and a 20 VDC loop excitation supply for the output. These power
supplies can be selectively wired to power passive mA devices.
A green input LED and a red output LED vary in intensity with changes
in the process input and output signals. These provide a quick visual
picture of your process loop at all times.
An output test button provides a fixed output (independent of the
input) when held depressed. The test output level is potentiometer
adjustable from 0 to 100% of output span.
The I/O LEDS and the output test button greatly aid in saving time
during initial startup and/or troubleshooting.
DC Input Ranges
Field selectable ranges and offsets via switch settings
Voltage: 0-10 mVDC to 0-130 VDC
Bipolar voltage: ±5 mVDC to ±65 VDC
Current: 0-200 µADC to 0-50 mADC
Input offset: ±100% in 15% increments
Input Impedance (Voltage)
Voltage: 1 MΩ minimum
Current: 50 Ω typical
Voltage burden: 1 VDC at 20 mA current input
Common Mode Rejection
100 dB minimum
Input Loop Power Supply
15 VDC ±10%, regulated, 25 mADC
May be selectively wired for sinking or sourcing mA input
LoopTracker
Variable brightness LEDs indicate I/O loop level and status
DC Output Ranges
Field selectable ranges and offsets via switch settings
Voltage (10 mA max): 0-1 VDC to 0-10 VDC
Bipolar voltage: ±5 VDC or ±10 VDC
Current: 0-2 mADC to 0-20 mADC, 4-20 mADC
20 V compliance, 1000 Ω at 20 mA
Output Calibration
Multi-turn zero and span potentiometers
±15% of span adjustment range typical
Output Loop Power Supply
20 VDC nominal, regulated, 25 mADC, <10 mVRMS max. ripple
May be selectively wired for sinking or sourcing mA output
Output Test/Override
Front button sets output to test level when pressed or via external
contact closure
Potentiometer adjustable 0-100% of span
Output Ripple and Noise
Less than 10 mVRMS ripple and noise
Linearity
Better than ±0.1% of span
Ambient Temperature Range and Stability
–10°C to +60°C operating ambient
Better than ±0.02% of span per °C stability
1200 VRMS minimum
Full isolation: power to input, power to output, input to output
Housing and Connectors
IP 40, requires installation in panel or enclosure
For use in Pollution Degree 2 Environment
Mount vertically to a 35 mm DIN rail
Four 4-terminal removable connectors, 14 AWG max wire size
Power
85-265 VAC, 50/60 Hz or 60-300 VDC, 2 W maximum
D versions: 9-30 VDC or 10-32 VAC 50/60 Hz, 2 W maximum
85-265 VAC, 50/60 Hz or 60-300 VDC
9-30 VDC or 10-32 VAC
Voltage Output
Switch E set to “V”
Current Sourcing Output
Switch E set to “I”
Current Sinking Output
switch E set to “I”
External Contact
for Test Function
Variable Brightness Output Indicator
Output Test Level Adjustment
Push to Test Output
Output Span Calibration
Variable Brightness Input Indicator
Output Zero Calibration
Voltage Input
Current Sinking Input
Source
Current Sourcing Input
To maintain full isolation avoid
combining power supplies in
common with input, output, or
unit power.
Cu 60/75°C
conductors
14 AWG
max.
13 Power AC or DC +
14 Earth Ground
16 Power AC or DC –
Loop
Power
Source
Loop
Power
213 4
213 4
4-20 mA
Device
+
+ –
–
– +
213 4
657 8
Omega Engineering Inc.
Test Cal.
Test
Span
Zero
DMD4380
DC to DC
Isolated Transmitter
10911 12
– +
Voltage
Xmtr
10911 12
–
– +
+
+ –
mA
Xmtr
10911 12
+15V –
mA
Xmtr
141315 16
Voltage
Device
– +
mA
Device
– +20V
Ri
Output
LED
Input
LED
Ri
Ri
User’s Guide
Ri
Shop online at
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e-mail: info@omega.com
For latest product manuals:
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MADE IN
Lead
Pb
Free
WARNING: This product can expose you to chemicals including nickel, which are known to the State of California to cause
cancer or birth defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov
1 2 3 4
Output
Input
Power
5 6 7 8
9 10 11 12
13 14 15 16
Remote Test
Do not connect
anything to
unused terminals
Wire terminal torque
0.5 to 0.6 Nm or
4.4 to 5.3 in-lbs
Page 2
2
DMD4380 Series DC-DC Isolated Transmitter
Range Selection
See the tables to select I/O ranges for your application. It is generally
easier to select ranges before installation. The module label lists
common ranges.
For ranges that fall between the listed ranges, use the next highest
setting and trim the output signal with the zero and span potentiometers.
Switches A and B: Input range
Switch C: Input offset
Switch D: Output range
Switch E: “V” for voltage output or “I” for current output
Note that when using a current shunt input, it measures a mV drop
across a fixed resistance, typically 50 mV, 75 mV or 100 mV. The correct input setting would be the appropriate mV range for the shunt.
Electrical Connections
WARNING! All wiring must be performed by a qualified electrician or
instrumentation engineer. Avoid shock hazards! Turn signal input,
output, and power off before connecting or disconnecting wiring,
removing, or installing module.
See diagram for wiring examples. Polarity must be observed for input
and output wiring connections. If the input and/or output do not function, check switch settings and wiring polarity.
Device Connected to Output Terminal Terminal Switch E
Voltage input
Passive mA (current) input.
Module provides loop power
mA (current) input device that
provides loop power.
Device Connected to InputTerminalTerminal
Voltage output
mA (current) output that provides loop power
Passive mA (current) output.
Module provides loop power
Output0-1 V0-2 V0-4 V1-5 V0-5 V0-8 V2-10 V0-10 V±5 V±10 V0-2 mA 0-4 mA 0-8 mA 2-10 mA 0-10 mA 0-16 mA 4-20 mA 0-20 mA
Using the Loop Power Supplies with Current Signals
Determine if your device (PLC, display, transmitter etc.) provides
power to the current loop or if the loop must be powered by the
DMD4380. Typical voltage may be 9-24 VDC at your device's terminals if it provides power to the loop.
If your device does not power the current loop, the module can
provide power using the appropriate terminals as indicated on the
wiring diagram.
Module Power
Check white model/serial number label for module operating voltage
to make sure it matches available power.
When using DC power, either polarity is acceptable, but for consistency with similar products, positive (+) can be wired to terminal 13
and negative (–) can be wired to terminal 16.
Mounting to a DIN Rail
The housing is IP40 rated and requires vertical installation on a
35 mm DIN rail in a protective panel or enclosure away from heat
sources. Do not block air flow. Allow 1" (25 mm) above and below
housing vents for air circulation.
1. Tilt front of module downward and position against DIN rail.
2. Clip lower mount to bottom edge of DIN rail.
3. Push front of module upward until upper mount snaps into place.
Removal
1. Push up on the bottom back of the module.
V
2. Tilt front of module downward to release upper mount from top
edge of DIN rail.
3. The module can now be removed from the DIN rail.
I
Calibration
Front-mounted Zero and Span potentiometers are used to calibrate
I
the output to compensate for load and lead variations.
Note: Perform the following calibration procedure any time switch
settings are changed.
1. Apply power to the module and allow a minimum 20 minute
warm up time.
2. Using an accurate calibration source, provide an input to the module
equal to the minimum input required for the application.
3. Using an accurate measurement device for the output, adjust
the Zero potentiometer for the exact minimum output desired.
The Zero control should only be adjusted when the input signal
is at its minimum. This will produce the corresponding minimum
output signal. For example: 4 mA for a 4-20 mA output or –10 V
for a ±10V output.
4. Set the input at maximum and adjust the Span pot for the
exact maximum output desired. The Span control should only
be adjusted when the input signal is at its maximum. This will
produce the corresponding maximum output signal. Example: for
4-20 mA output, the Span control will provide adjustment for the
20 mA or high end of the signal.
5. Repeat adjustments for maximum accuracy.
Output Test Function
When the Test button is pressed it will drive the output with a known
good signal that can be used as a diagnostic aid during initial start-up
or troubleshooting. When released, the output will return to normal.
The Test Cal. potentiometer is factory set to approximately 50%
output. It can be adjusted to set the test output from 0 to 100% of
the output span. Press and hold the Test button and adjust the Test
Cal. potentiometer for the desired output level.
Operation
The DMD4380 accepts a DC voltage or current input and provides an
optically isolated DC voltage or current output that is linearly related
to the input.
The green input LED provides a visual indication that a signal is being
sensed by the input circuitry of the module. It also indicates the input
signal strength by changing in intensity as the process changes from
minimum to maximum.
If the LED fails to illuminate, or fails to change in intensity as the
process changes, check the module power or signal input wiring. The
red output LED provides a visual indication that the output signal is
functioning. It becomes brighter as the input and the corresponding
output change from minimum to maximum.
For current outputs, the red LED will only light if the output loop current path is complete. For either current or voltage outputs, failure to
illuminate or a failure to change in intensity as the process changes
may indicate a problem with the module power or signal output
wiring. Note that it may be difficult to see the LEDs under bright
lighting conditions.
Page 3
DMD4380 Series DC-DC Isolated Transmitter
Output0-1 V0-2 V0-4 V1-5 V0-5 V0-8 V2-10 V0-10 V±5 V±10 V0-2 mA 0-4 mA 0-8 mA 2-10 mA 0-10 mA 0-16 mA 4-20 mA 0-20 mA
Switches
Input
0-200 µA
0-400 µA
0-800 µA
0-1 mA
0-1.6 mA
0-2 mA
0-2.6 mA
0-3.2 mA
0-4 mA
0-5 mA
0-5.2 mA
0-6.4 mA
0-8 mA
2-10 mA
0-10 mA
0-10.4 mA
0-13 mA
0-16 mA
4-20 mA
0-20 mA
0-20.8 mA
0-26 mA
0-32 mA
0-40 mA
0-50 mA
Output0-1 V0-2 V0-4 V1-5 V0-5 V0-8 V2-10 V0-10 V±5 V±10 V0-2 mA 0-4 mA 0-8 mA 2-10 mA 0-10 mA 0-16 mA 4-20 mA 0-20 mA
Switches
Input
0-10 mV
0-20 mV
0-40 mV
0-50 mV
0-80 mV
0-100 mV
0-130 mV
0-160 mV
0-200 mV
0-250 mV
0-260 mV
0-320 mV
0-400 mV
0-500 mV
0-520 mV
0-650 mV
0-800 mV
0-1 V
0-1.04 V
0-1.3 V
0-1.6 V
0-2 V
0-2.5 V
0-2.6 V
0-3.2 V
0-3.25 V
0-4 V
1-5 V
0-5 V
0-5.25 V
0-6.5 V
0-8 V
2-10 V
0-10 V
0-10.4 V
0-13 V
0-16 V
0-20 V
0-25 V
0-26 V
0-32.5 V
0-40 V
0-50 V
0-52 V
0-65 V
0-100 V
0-130 V
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 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.
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.
reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC.
FOR NON-WARRANTY REPAIRS,
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.
consult
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