37
Contrinex Industrial Electronics
CONNECTING THE PROTECTIVE DEVICE
Please note that all electrical connections must be performed by expe-
rienced and qualified personnel.
POWER SUPPLY
The power supply to both the sender and receiver units must be 24 V
DC
±
20% for YBB models. The power consumption of YBB protec-
tive devices depends on the model. Please refer to the data sheets for
details.
The external supply voltage must be capable of buffering brief main
voltage failures of 10 ms as specified in IEC 61496-1.
Use a dedicated 24 VDC, Class 2 Safety Extra-low Voltage (SELV) or
Protective Extra-low Voltage (PELV) power supply to supply each unit.
These power supplies provide the necessary protection to ensure that
under normal and single-fault conditions, the voltage between the dif-
ferent conductors, and between conductors and functional earth, does
not exceed a safe value.
ELECTROMAGNETIC COMPATIBILITY (EMC)
In terms of immunity to electromagnetic fields, Safetinex protective de-
vices fully comply with EN 55011/A2 and EN 61000-6-4 (electrostatic
discharge, electrical and radio-frequency disturbances). Proximity to
potential electromagnetic interference is acceptable within the limits of
these standards.
In case of presence of strong electromagnetic fields, the use of shielded
5-pin cables is strongly recommended.
LIGHT RADIATION
Additional measures may be necessary to ensure that the AOPD does
not fail to danger when other forms of light radiation are present in a
particular application (for example, use of cableless control devices on
cranes, radiation from weld spatter or effects from stroboscopic light).
