SDM-CVO4 4-Channel Current/Voltage Output Module
5
7. Select the output options.
8. Click
Finish
and save the program. Send the program to the data logger if
the data logger is connected to the computer.
9. If the sensors are connected to the data logger, check the output of the
sensors in data display in
LoggerNet
,
RTDAQ
,
PC400
, or
PC200W
to
make sure it is making reasonable measurements.
5. Overview
The SDM-CVO4 includes four channels for connecting the external devices.
Each output can be set to 0 to 10 V or 0 to 20 mA by the data logger. The
output can be scaled and limited to 4 to 20 mA by the data logger program if
required by the application.
Typical applications include driving remote current-loop display units, re-
transmitting measured values to industrial control systems that have current or
high voltage inputs, sending control signals to valve controllers and providing
excitation voltages or currents to external sensors.
Each output is isolated both from the data logger and the other channels on the
SDM-CVO4, thereby avoiding ground loop problems that might otherwise
occur.
In the current mode, the output can either act as a 2-wire current controller,
where the loop is powered from a remote voltage source, or generate a 0 to
20 mA current source using a voltage output derived from its power supply.
The SDM-CVO4 is a synchronously addressed data logger peripheral. The data
logger SDM terminals are used to address the SDM-CVO4 and send data that
defines the desired voltage/current output of the four channels. The output
levels are set by four values stored in variables in the data logger. Up to sixteen
SDM-CVO4s or other SDM peripherals may be connected and addressed from
the same three terminals.
Features:
•
Expands data logger current/voltage output capability
