Connecting Input/Output Module - Siemens FDCIO223 Technical Manual

Mounting / Installation
5.3

Connecting input/output module

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Building Technologies
Fire Safety
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Circuit board view
Connect the module in accordance with the corresponding connection diagrams.
Note the positive and negative poles.
Only connect one wire per terminal. This is the only way to ensure the connection
is failure-free for the entire service life of the device.
When connecting the device, consider the following:
The shielding of the FDnet/C-NET detector line must be connected to

terminal 15.
The shielding of the 24 V secondary side supply must be connected to

terminal 16.
The grounding for the shielding on the secondary side must be connected to

terminal 1, as must the secondary side ground fault monitoring.
The shielding for the lines on the secondary side should be connected to

terminal 2.
In the case of shielding on the secondary side, the secondary-side grounding

must be connected. If there is no local station ground available, the shielding for
the secondary-side supply can be used as a ground instead.
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2015-10-06