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Operating Instructions
Chapter
5
miniTwin2
8013482/YT85/2016-02-23
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
41
Subject to change without notice
Electrical installation
5
Electrical installation
Switch the entire machine/system off line!
The machine/system could unintentionally start up while you are connecting the devices.
Ensure that the entire machine/system is disconnected during the electrical
installation.
Ensure that downstream contactors are monitored!
Downstream contactors must be positively guided and monitored (see section 5.5
“External device monitoring (EDM)” on page 49)!
Connect OSSD1 and OSSD2 separately!
You are not allowed to connect OSSD1 and OSSD2 together, otherwise signal safety will
not be ensured.
Ensure that the machine controller processes the two signals separately.
If you connect loads to the OSSDs that are not reverse polarity protected, then you must
connect the 0 V connections for these loads and the related protective device
separately, one after the other, to the same 0 V terminal strip. Only then is it ensured
that in the case of a fault, it is not possible for a potential difference to form between
the 0 V connections for the loads and the related protective device.
WARNING