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OMB-DBK23, $549, front view,
shown smaller than actual size
⻬ Optically Isolated
Inputs Accept
up to 30 Vdc
⻬ 500 V Channel-to-
Channel Isolation
⻬ 500 V Channel-to-
System Isolation
⻬ Expandable to 192
Digital Lines
The OMB-DBK23 is a 24-line
digital-input module that provides
isolated digital inputs for OMEGA’s
OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series data
acquisition systems. The unit provides
500 V of channel-to-channel and 500 V
of channel-to-system optical isolation,
eliminating troublesome ground loops
and protecting the data acquisition
system from damage caused by
accidental contact with high external
voltages. Up to eight OMB-DBK23
modules can be connected to one
system, for a total of 192 digital inputs.
Applications
The OMB-DBK23 can monitor a
range of 3 to 30 Vdc inputs, making
it especially suitable for applications
such as process control or laboratory
automation.
The unit is capable of monitoring
electrical devices such as proximity
switches, thermostats and limit
switches.
Connections
The OMB-DBK23 connects to a
system’s digital I/O connectors
and uses the digital I/O lines as a
communications bus. Thus, the lines
on a system’s digital I/O connectors
are not user accessible when an
OMB-DBK23 is in use.
The OMB-DBK23 can be daisy-chained
with other OMB-DBK digital I/O cards or
modules via optional expansion cables.
Signal connections to the OMB-DBK23
are made via screw terminals, which are
conveniently located on its slide-out PC
board.
Power
The OMB-DBK23 is equipped with an
internal power supply and external AC
adaptor. It can also be powered from
an OMB-DBK30A battery/excitation
module, a 12 Vdc car battery, or from
any 9 to 24 Vdc source.
Specifications
24 optically isolated digital-input
channels readable in 8-bit groups
Connector: DB37 male, mates
with P2 pinout on an OMB-LOGBOOK
or OMB-DAQBOARD-2000 Series
(attachment to the DAQBOARD’s P2
further requires the use of an optional
OMB-CA-60 cable)
Input Channel Ratings:
Range: 3 to 30 Vdc
Input Current: 1.5 to 15 mA
Operating Voltage Range:
9 to 24 Vdc
Module Power Requirements: 0.25 W;
AC adaptor included
120 Vac Adaptor Supplied:
15 Vdc @ 0.9 A
Indicators: Local power & system
power LED
Controls: Power on/off
Isolation Voltage:
Channel-to-Channel: 500 V
Channel-to-System: 500 V
Channel Address: Set by dip-switch
Dimensions: 221 x 285 x 35 mm
(8.5 x 11 x 1.375")
Weight: 1.2 kg empty (3 lb)
OMB-DBK23
24-Line Optically Isolated Digital-Input
Module for OMB-LOGBOOK,
and OMB-DAQBOARD-2000 Series
To Order
(Specify Model Number)
Model Number Price Description
OMB-DBK23 $549 24-Line Optically Isolated Digital-Input Module
Ordering Example: OMB-DBK23 is a 24-line optically isolated digital-input module, $549.
Model OMB-DBK23
$
549
H-71
OMB-DBK23, $549, rear
view, shown smaller
than actual size
AVAILABLE FOR FAST DELIVERY!
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