Siemens FDCIO223

Structure and function
34
Building Technologies
009122_e1_en_--
Fire Safety
2015-10-06
Circuit
The figure below shows the various circuit options available for contact inputs.
Circuit for contact inputs
1 DC 24 V supply fuse 2…3 Monitoring for open line and short circuit
5 Monitoring for open line only
The contact inputs must be potential-free.