Rockwell Automation 445L GuardShield Safe 4 and Safe 4 PAC Safety Light Curtains User Manual - Manual (Page 15)

R
GuardShield™ Safe 4 Safety Light Curtain User Manual
13
Original instructions
Bringing into operation
After the power has been applied to the GuardShield Safe4 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.
ATTENTION
The safety devices and the interconnection to
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.