ABB 2TLA050007R0602, Product Manual

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2TLC010088M0201
Rev.A 6
Function description
Safety interlock switches with guard locking are designed to fit to the leading edge of sliding or
hinged guard doors to provide positively operated switching and a tamper resistant key
mechanism. They are designed to provide robust position interlock detection and to keep moving
guards closed. The switch is rigidly mounted to the frame of the guard or machine. The dual
actuator is fitted to the moving part of the guard, and is aligned to the switch entry aperture,
placed on the frame of the guard. The dual actuator profile is designed to match a cam mechanism
within the switch head. The actuator also contains an RFID tag. When both the mechanical key and
the RFID tag is evaluated, it provides a positively operated not easily defeatable dual interlock
switch. The machine can be started when the guard is closed, the dual actuator inserted in the
switch and the switch is locked. The guard door can be opened when the solenoid releases the
lock.
The MKey RFID is fitted with a spring lock. The locking mechanism moves into the locked position
directly when the door is closed, and the dual actuator key is pushed into the switch. The actuator
key can then only be released, and the gate opened, by supplying operational voltage to the
solenoid (terminals S+ and 0 V DC).
The MKey RFID has double OSSD outputs controlled by means of the dual actuator key and the
locking mechanism. The dual actuator key is designed to prevent tampering with tools, magnets,
or similar objects.
To achieve the highest safety level in connection with the machine control system, it is
recommended that the MKey RFID is monitored by an appropriate ABB Electrification safety relay
or safety PLC.
It is easy to obtain the highest level of safety for the electrical part with the dual interlock actuator
and the two OSSD outputs, but an ABB bolt- or rotary-handle accessory for MKey RFID is
recommended to meet the mechanical requirements of relevant safety standards.
The two inputs- and two OSSD-outputs can be used to connect OSSD devices in series and still
maintain the highest possible safety level according to relevant standards.
Warning!
Application consideration must be given to the fixing of the actuator which has to be in a way that
prevents disassembly by easy means.
The head can be set in four positions, thus providing the safety device with eight different
operation positions. The leading edges of the actuator key are reinforced and beveled to guide it
properly into the key entry. The safety switch is designed to have a high holding force. MKey RFID
has two types of actuators as options. A standard actuator key, or a flexible actuator key. The
actuator must be ordered separately unless a rotary handle or sliding bolt is used.
Hinged guard
Sliding guard