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+This symbol indicates an important personal safety warning. Failure to comply
with the warning may result in very high risk for exposed personnel.
INTRODUCTION
The REER AD SR2 interface is a safety device that satisfies the
requirements of standard IEC 61496 – 1. When connected to one or two
photoelectric safety barriers equipped with PNP semiconductor outputs
and, where applicable, to a one or two-way safety switch, it performs
additional functions such as start/restart – interlocking and controlling
any external contactors.
The interface ensures that:
•output lines are open if the barriers are intercepted;
•if the RESTART contact remains closed in manual mode
this is not interpreted as AUTO mode.
The interface is also capable of controlling two external relays
(connected to its outputs) and uses the input of the K1/K2 feedback to
check that these operate in safety.
+The AD SR2 interface, when connected to one (or two) type 4 photoelectric
safety barriers certified to IEC 61496 – 1/2 standard, equipped with two built-in
solid-state PNP outputs, conforms to ESPE (Electro-Sensitive Protective
Equipment) type 4.
+If all the other characteristics specified above remain unchanged, but a type 2
barrier is used, the whole ESPE will also be type 2.
+When deciding on the safety category to be adopted, carefully consider the
risks analysis of the machine.
+The interface has been designed in particular for use with the REERlight
curtains of the Admiral (type 4) and Vision (type 2) series. Consult REER
before using the interface with other light curtain models or safety devices.
+For safe use of the device, it is essential to read and understand the contents
of this handbook.
+Failure to comply with the prescriptions indicated in this handbook may result
in very high risks for the operating personnel of the machine protected.
