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Data Sheet for Product

ManualsBrandsSiemens ManualsRoom controlsClimatix programmable controllers POL42X.50/XXX
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3
Siemens
CB1Q3973_en--_e
Smart Infrastructure
2022-03-21
Communication concept
Type summary
Type
Photo
POL424.50/XXX
Notes
Engineering
● In order to protect against accidental contact with relay connections at voltages above 42
Veff, the device must be installed in an enclosure (preferably a control panel). It must be
impossible to open the enclosure without the aid of a key or tool.
● AC 115…230 V cables must be double-insulated against safety extra-low voltage (SELV)
cables.
● Do NOT mix SELV / PELV and line voltage on the same terminal.
● Use external protection for inductive load of relay outputs.
● Use external fuse for over current protection of relay outputs.
● Avoid negative voltage on analogue inputs, because the measured ADC values are
undefined. The accuracy of the 10 V analogue inputs is valid for values above 100 mV.