Contec DAI12-4FITGY, Руководство пользователя, Страница: 18 / 65

Connecting to an External Device
DAI12-4(FIT)GY
13
Connecting a Current Output
Example of Connecting a Negative Load Resistor
Two types of connection methods can be employed: fixed load and floating load. If
the module is used as a load resistance, multiple current loops can be implemented by
using the same power supply. The use of current output requires an external power
supply (17 - 24V). In such a case, a power supply with a small ripple should be used
in order to avoid an adverse impact on the conversion accuracy due to a large power
supply ripple.
The load resistance R
L
that is connected to the current output of each channel should be
less than
500Ω, including the wire resistance.
Example of Connecting with a Flat Cable
Use a flat cable to connect the voltage output and the analog ground of each channel to
the load resistance R
L.
Figure 3.5. Connecting to a Floating Load (Flat Cable)
Figure 3.6. Connecting to a Fixed Load (Flat Cable)