Omega Products OMB-DBK24 User Manual
H-72
H
Model OMB-DBK24
$
549
⻬ Optically Isolated
Outputs up to 60 Vdc
⻬ 500 V Channel-to-
Channel Isolation
⻬ Expandable to 192
Digital Lines
The OMB-DBK24 is a 24-line digitaloutput module that provides isolated
digital outputs for OMEGA’s
OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series data
acquisition systems. The OMB-DBK24
provides 500 V of channel-to-channel
and 500 V of channel-to-system optical
isolation for complete system protection.
This isolation protects the data
acquisition system from damage caused
by accidental contact with high external
voltages and eliminates troublesome
ground loops. Up to eight OMB-DBK24
modules can be connected to one
system, for a total of 192 digital outputs.
Connections
The OMB-DBK24 connects to a system’s
P2 digital I/O connectors and uses the
existing 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-DBK24 is
in use. The OMB-DBK24 can be daisychained with other OMB-DBK digital I/O
cards or modules via optional expansion
cables. Signal connections to the OMBDBK24 are made via screw terminals,
which are conveniently located on its
slide-out PC board.
Power-On-Reset
The module features a power-on-reset
function, allowing users to set the
outputs to either “on” or “off” prior to
start-up. Each power up output state is
determined by dip-switch settings prior
to the first write command to the
module.
Power
The OMB-DBK24 is equipped with an
internal power supply and external AC
adaptor. It can also be powered from an
OMB-DBK30A battery module, a 12 V
car battery, or from any 9 to 24 Vdc
source.
Specifications
24 optically isolated digital-output
channels programmable 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 an optional
OMB-CA-60 cable)
Output Channel Ratings:
Maximum Current/Channel: 1 A
Voltage Drop @ 1 A and 25°C: 1 V
Maximum Open Circuit Voltage:
60 Vdc
Off-State Leakage: 10 µA
Module Power Requirements:
1.5 W; AC adaptor included
Indicators: Local power & system
power LED
Controls: Power on/off
Power-On-Reset State: Following
power-up, the state of each output is
determined by dip-switch settings prior
to first write command to the module
Isolation Voltage: 500 V
Maximum Module Power Dissipation:
12 W @ 25°C,
6 W @ 50°C
Dimensions: 221 x 285 x 35 mm
(8.5 x 11 x 1.375")
Weight: 1.3 kg empty (3 lb)
OMB-DBK24
24-Line Optically Isolated Digital-Output
Module for OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series
To Order
(Specify Model Number)
Model Number Price Description
OMB-DBK24 $549 24-Line Optically Isolated Digital-Output Module
Ordering Example: OMB-DBK24 is a 24-line optically isolated digital-output module, $549.
OMB-DBK24, $549, front view,
shown smaller than actual size
OMB-DBK24, $549, rear view,
shown smaller than actual size
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