Rockwell Automation 442L-SFZNMN SafeZone Mini Safety Laser Scanner User Manual - Manual (Page 41)

Rockwell Automation Publication 10000337275 Ver 01—October 2014 39
Chapter 6 Electrical installation
Chapter
6
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.
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.
Downstream contactors must be positively guided and monitored.
Only ever connect one downstream switching element to an OSSD!
Each output signal switching device (OSSD) is only allowed to be connected to one switching element (e.g. relay or
contactor). If several switching elements are required, you must choose a suitable form of contact duplication.
Prevent the occurrence of a potential difference between the load and the protective device!
 If you connect loads that are not reverse-polarity protected to the OSSDs or the safety outputs, you must connect the 0
V connections of these loads and those of the corresponding protective device individually and directly to the same 0 V
terminal strip. This is the only way to ensure that, in the event of a defect, there can be no potential difference
between the 0 V connections of the loads and those of the corresponding protective device.
ATTENTION
OSSD1 OSSD2 OSSD1 OSSD2
OSSD1 OSSD2 Saf
e
ty
output 1
Saf
e
ty
output 2
OSSD1 OSSD2 Saf
e
ty
output 1
Saf
e
ty
output 2