SIMATIC PCIe DIO4
Compact Operating Instructions, 11/2011, A5E03493449-01
11
Installing and connecting the DIO module
2
2.1
Important installation note
CAUTION
Damaging the DIO module during installation
The 24 V supply voltage of the DIO module is not protected against reverse polarity. An
internal safety mechanism is triggered in case of reverse polarity which renders the module
inoperable.
Make sure that the DIO module is installed with correct polarity (digital inputs and outputs
on outside). If you do install the DIO module with reversed polarity and inadvertently take it
into operation: Remove the module and send it in for repair.
2.2
Connecting the power supply of the outputs
You need the supplied clamp-on ferrite core from Würth, order number 742711112, for the
+24 V power supply cable.
NOTICE
Do not close the housing of the clamp-on ferrite core
Once the housing of the clamp-on ferrite core is closed, it cannot be opened again.
First, leave the housing of the clamp-on ferrite core open.