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Bringing into operation
After the power has been applied to the GuardShield Safe 2 and the
automatic power-up test is successfully completed, the green Power LED
on the receiver and transmitter will light on. The system is now ready to
operate.
The automatic power-up test will only be successful, if transmitter and
receiver are properly aligned, correctly connected and the protective field
is not interrupted.
Any intrusion of an object into the protective field will switch the OSSD
off within the specified response time and the LED at the receiver toggles
from green to red.
Outputs
The two redundant Output Signal Switching Devices (OSSD) are fully
monitored. Any short circuits are detected. The maximum load is 0.3 A,
higher currents are limited through short circuit protection. Increased
output loads may be realized using external safety interfaces.
The output voltage at the solid-state outputs is dependant on the power
supply and the output load.
Typical wiring diagram to MSR127 safety relay module
The interfacing of the light curtain with the machine control has to be
control reliability, i.e. a correct interface with a safety PLC or safety relays
with positive guided relay contacts.
The safety devices and the interconnection to
ATTENTION
the machinery have to comply with the basic
safety requirements as mentioned in the
current regulations and standards.
Direct interfacing of a safety light curtain to
machine control that does not meet the
necessary safety integrity level, i.e., use of
general purpose PLCs or general purpose
relays may cause injury to persons.
Consult a professional safety engineer.
R
Original instructions
GuardShield™ Safe 2 Safety Light Curtain User Manual
13
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