NOTICE!
Risk of influences to the connected sensors!
Some sensors may be influenced by the deactivated module outputs of DA502.
Connect a 470 W / 1 W resistor in series to inputs DC16/DC17 if they are used
as fast counter inputs to avoid any influences.
For a description of tthe meaning of the LEDs, please refer to the Displays
Ä
Chapter
1.6.3.1.2.8 “State LEDs” on page 606 chapter.
Connection of resistance thermometers in 2-wire configuration to the analog inputs
When resistance thermometers (Pt100, Pt1000, Ni1000) are used, a constant current must flow
through them to build the necessary voltage drop for the evaluation. For this, the module DA502
provides a constant current source which is multiplexed over max. 4 analog input channels.
The following figure shows the connection of resistance thermometers in 2-wire configuration to
the analog input AI0. Proceed with the analog inputs AI1 to AI3 in the same way.
I/O modules > Digital/Analog I/O modules
2022/01/313ADR010278, 3, en_US588
To Next Page
Loading...
