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.
