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.
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 M minimum
Current: 50 typical
Voltage Burden: 1 VDC at 20 mA current input
Input Loop Power Supply
15 VDC ±10%, regulated, 25 mADC
May be selectively wired for sinking or sourcing mA input
LED Indicators
Variable brightness LEDs indicate I/O loop level and status
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
20 V compliance, 1000 at 20 mA
Output Linearity
Better than ±0.1% of span
Output Zero and Span
Multi-turn potentiometers to compensate for load and lead variations, ±15% of span adjustment range typical
Output Loop Power Supply
20 VDC nominal, regulated, 25 mADC
May be selectively wired for sinking or sourcing mA output
Output Test
Front button sets output to test level when pressed
Potentiometer adjustable 0-100% of span
Response Time
70 milliseconds typical
Common Mode Rejection
100 dB minimum
Isolation
1200 VRMS minimum
Full isolation: power to input, power to output, input to output
Ambient Temperature Range and Stability
–10°C to +60°C operating ambient
Better than ±0.02% of span per °C stability
Power
80-265 VAC or 48-300 VDC, 2 W maximum
D versions: 9-30 VDC or 10-32 VAC 50/60 Hz, 2 W maximum
Housing
IP 40 ABS/polycarbonate housing mounts to 35 mm DIN rail
Dimensions
0.89" W x 4.62" H x 4.81" D
22.5 mm W x 117 mm H x 122 mm D
Height includes connectors
Connectors
Four 4-terminal removable connectors, 14 AWG max wire size
80-265 VAC or 48-300 VDC
9-30 VDC or 10-32 VAC
Voltage
Output
Switch E
set to “V”
Current
Sourcing
Output
Switch E
set to “I”
Voltage
Xmtr
Loop
Power
Source
mA
Xmtr
Voltage
Input
Device
– +
2134
mA
Input
Device
– +20V
2134
–
– +
+
Current Sinking Input
–
– +
+
+
–
Ri
13 Power AC or DC +
14 Earth Ground
16 Power AC or DC –
Switch E
set to “I”
Ri
Voltage Input
1091112
1091112
mA
Xmtr
Loop
Power
Source
Current
Sinking
Output
Omega Engineering Inc.
Test Cal.
Isolated Transmitter
Ri
Current Sourcing Input
mA
Input
Device
Ri
+ –– +
– +
213 4
6578
Output
LED
Test
Span
DMD4380
Zero
DC to DC
Input
LED
10911 12
+15V –
141315 16
User’s Guide
Shop online at
omega.com
e-mail: info@omega.com
For latest product manuals:
omegamanual.info
MADE IN
Variable Brightness Output Indicator
Output Test Level Adjustment
Push to Test Output
Output Span Calibration
Variable Brightness Input Indicator
Output Zero Calibration
DC to DC Isolated Transmitter
DMD4380
Connections
Term. #
3
4
9
10
11
13
16
Input 1Input 2OutputOffset
ABCDE
4
5
4
4
5
3
2
1
0
F
E
+/-10V
4-20mA
5
6
6
3
2
7
7
1
8
8
0
9
9
F
A
A
E
B
B
C
C
D
D
INPUT
4-20 mA
0-1 mA
0-100 mV
0-50 mV
ABCD
ABCD
ABCD
ABCD
ABCD
4B00
0-1V
0B00
0100
0000
5590
4B09
0-5V
0B09
0109
0009
5599
4B06
1-5V
0B06
0106
0006
5596
4B04
+/-5V
0B04
0104
0004
5594
4B03
0-10V
0B03
0103
0003
5593
4B05
0B05
0105
0005
5595
4B07
0B07
0107
0007
5597
1
0
F
Signal
Sig. Out –
Sig. Out +
Sig. Input –
Loop Exc.
Sig. Input +
Power +
Power –
6
3
2
7
8
9
A
E
B
C
D
For more Details and Instructions see Data Sheet
1. Set Switches A/B/C/D for desired Input / Output ranges.
2. Set Switch E for Voltage or Current as required.
3. Set Zero / Span / Test Cal. Controls
OUTPUT
Rotary Switches
6
5
0-500 mV
ABCD
1490
1499
1496
1494
1493
1495
1497
7
4
1-5 V
Output
V I
8
9
0
1
2
3
+/- 10 V
0-10 V
0-25 V
0-5 V
ABCD
ABCD
ABCD
ABCD
2000
2400
1C30
2800
2009
2409
1C39
2809
2006
2406
1C36
2806
2004
2404
1C34
2804
2003
2403
1C33
2803
2005
2405
1C35
2805
2007
2407
1C37
2807
4-20mA IN/OUT: CODE 5597
Set switch “A” to 5; “B” to 5;
“C” to 9; “D” to 7
EXAMPLE:
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
(+)
V
I
I
(+)
(+15 V)
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
3 (–)4 (+)
(+20 V)
3 (–)4
2 (–)3
9 (–)11 (+)
9 (–)11
11 (–)10
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 clips to a standard 35 mm DIN rail. The housing is IP40
rated and requires a protective panel or enclosure.
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.
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.
Calibration
Front-mounted Zero and Span potentiometers are used to calibrate
the output to compensate for load and lead variations.
1. Power up 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. Example: for 4-20 mA output, the Zero control will provide
adjustment for the 4 mA or low end of the signal.
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.
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
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
It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the
European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.
The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter specifications without
notice. WARNING: These products are not designed for use in, and should not be used for, human applications.
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
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Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO
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PATENT NOTICE: U. S. Pat. No. 6,074,089; 5,465,838 / Canada 2,228,333; 2,116,055 / UK GB 2,321,712 / Holland 1008153 / Israel 123052 / France
2 762 908 / EPO 0614194. Other patents pending.
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
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