DMD1080, DMD1080-DC DC Input Alarm Trips
2
Range Selection
It is generally easier to select ranges before installation. See the
model/serial number label for module information, options, or if
a custom range was specified.
Set input selector switch A to “I” for a current input or to “V”
for a voltage input.
Switch settings B and C determine the input range.
Switch D determines the alarm configuration.
Electrical Connections
WARNING! All wiring must be performed by a qualified electri-
cian or instrumentation engineer. See diagrams for terminal
designations and wiring examples.
Avoid shock hazards! Turn power off to signal input, relay wiring,
and module power before connecting or disconnecting wiring.
Module Power Terminals
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.
Signal Input Terminals
Polarity must be observed for input wiring connections. If the input
does not function, check switch settings and wiring polarity.
Voltage inputs are connected as shown in the table below.
The input can be used with either sinking or sourcing milliamp
devices. Only one device must provide power to the current loop.
For a transmitter with a current output, determine if it provides
power to the current loop or if it must be powered by the DMD
1080 module. Use a multi-meter to check for voltage at the
transmitter’s output terminals. Typical voltage may be in the
range of 9 to 24 VDC. In this case, wire the device to terminals
9 and 11.
Relay Output Terminals
See wiring diagrams for connections. The module does not
provide power to the relay contacts.
Inductive loads (motors, solenoids, contactors, etc.) will greatly
shorten relay contact life unless an appropriate RC snubber is
installed.
The DMD1080 operates two sets of relays in unison with a
single setpoint.
The dual DPST contact sets are in a Form A (NO) and a Form B
(NC) configuration.
They may be field wired for Form C operation as required.
Type of Input Device
– Terminal + Terminal
Sensor or transmitter with a volt-
age output.
9 (
–)
11
(
+)
Transmitter with a mA (current)
output that provides power to
the current loop. Typically a 3 or
4-wire device.
9 (
–)
11
(
+)
Transmitter with mA (current)
output that is unpowered.
Typically a 2-wire device. DMD
module provides loop power.
11 (
–)
Signal
10
(
+15 V)
Alarm Configuration Settings
Alarm Type
Latch
Action
Switch D
HI
No
Normal
2
HI
No
Reverse
6
HI
Yes
Normal
0
HI
Yes
Reverse
4
LO
No
Normal
3
LO
No
Reverse
7
LO
Yes
Normal
1
LO
Yes
Reverse
5
Input Configuration Settings
Input Range
Switch A B C
0-50 mV
V 8 1
0-100 mV
V 9 1
0-200 mV
V A 1
0-250 mV
V C 1
0-400 mV
V B 1
0-500 mV
V 0 1
0-1 V
V 1 1
0-2 V
V 2 1
0-2.5 V
V 4 1
0-4 V
V 3 1
1-5 V
V 3 F
0-5 V
V 5 1
0-10 V
V 6 1
±5 V
V 6 4
±10 V
V 7 4
0-1 mA
I C 1
0-2 mA
I 0 1
0-4 mA
I 1 1
0-8 mA
I 2 1
2-10 mA
I 2 F
0-10 mA
I 4 1
0-16 mA
I 3 1
4-20 mA
I 3 F
0-20 mA
I 5 1
10
9
11
12
–
+
Voltage
Device
Form A Form B
NO NO NC NC
2
1
3
4
6
5
7
8
Form A Form B
NO NO NC NC
Jumper
2 & 3 for
Form C
operation
Jumper
6 & 7 for
Form C
operation
+15V
–
10
9
11
12
Passive
mA
Xmtr
R
i
+
10
9
11
12
–
mA Xmtr
R
i
Power
Source
+
10
9
11
12
–
Passive
mA Xmtr
R
i
+
–
Loop
Power
Source
Test:
Push to toggle relays to oppo-
site state
Input LED
: Variable brightness green
LED indicates input level
Bi-Color Alarm LED
Green = non-alarm condition
Red = alarm condition
Deadband:
Smaller = counterclock-
wise. Symmetrical about setpoint
Setpoint:
Higher = clockwise
Current Sourcing Input
DMD1080 provides
power to input loop.
Typical when using a
passive or unpowered
transmitter or sensor.
Relay Outputs
Single setpoint
dual DPST
Current Sinking Input
Typical of a system
using a transmitter that
is externally powered
and provides power to
the loop.
Current Sinking Input
with Separate Power
Supply
Typical of a system using
a passive transmitter and
a loop power supply to
power to the loop.
DMD1080:
85-265 VAC, 50/60 Hz or 60-300 VDC
DMD1080-DC:
9-30 VDC or 10-32 VAC 50/60 Hz
Voltage Input
Typical of a system using
a transmitter that has a
voltage output.
13 Power AC or DC +
14
Earth Ground
16 Power AC or DC –
14
13
15
16
1 2 3 4
5 6 7 8
9 10 11
12
13 14
15
16
Input
Relay 1
Power
Relay 2
To maintain full isola-
tion avoid combining
power supplies in
common with input,
output, or unit power.
To avoid damage
to the module,
do not make any
connections to
unused terminals
Wire terminal torque
0.5Nm to 0.6Nm
(4.4 to 5.3 in-lbs)
