Connecting An Analog Output Signal; Connecting Voltage Output Signals; Connecting Current Output Signals - Data Translation DT9850 Series User Manual

Chapter 3

Connecting an Analog Output Signal

This section describes how to connect a voltage or current output signal to a DT9850 Series
module.

Connecting Voltage Output Signals

Figure 5
DT9850 Series module.
Figure 5: Connecting an Analog Voltage Output Signal to a DT9850 Series Module

Connecting Current Output Signals

To connect a current (I) output to the DT9853-M or DT9854-M module, note the following
requirements:
• Use an excitation voltage supply between 8 VDC and 36 VDC to power the loop.
• Consider the drop across the load when selecting the excitation voltage supply. Typical
• The loop can use either a grounded external supply, where the load floats, or a grounded
Figure 6
floats) to a current output channel of the DT9853-M or DT9854-M module. In this case, the
output is connected to the Analog I_Output 0 signal.
36
shows how to connect a voltage output signal, in this case Analog V_Output 0, to a
Load
applications use a 24 VDC excitation voltage supply.
To determine the maximum voltage at the load, use the following equation:
Uload_max = (Compliance voltage – 8 V)/0.02 A
load, where the external supply floats.
shows an example of connecting a grounded excitation voltage supply (the load
DT9850 Series
Analog Ground
Analog V_Output 0
Module
9
1