A22TK
2
Key: Cannot be removed
I take the key with me when
I enter, so there is no worry
of becoming trapped inside!
Guard Lock
Safety-door Switch
Safety can be ensured, but there is a risk of human error
occurring during operation.
By using a common key, the risk of human error is reduced in operations
from when the door is open/shut until the equipment is started.
F r o m
When only the Door Switch is used, the operator is at risk of being
shut inside the barrier if, for example, he/she forgets to remove the
trapped key and a third par ty locks the door.
The equipment may also be star ted up while the operator is inside.
The two locks on the door and equipment use the same key, reducing the likelihood that the user will forget to remove it.
In addition, the key cannot be removed when maintenance is being performed. This prevents the key from being lost and greatly
reduces the risk of an operator becoming trapped inside.
+
Forgetting to
remove the key
Assumed risks
Being
trapped inside
Forgetting to
remove the key
Being
trapped inside
Assumed risks
Starting equipment
To
Guard Lock Safety-door Switch
only
The safety level is enhanced by switching to maintenance mode.
However, because two different types of keys are required,
the operator is still at risk of being shut inside if he/she forgets to
remove the trapped key.
Guard Lock Safety-door Switch
Key Selector Switch (A22K)
+
Guard Lock Safety-door Switch
Safety Key Selector Switch (A22TK)
I should close it.
I should close it.
I'm trapped
inside!
The equipment
started up!
Operation starts
Common key
Furthermore
Different keys
Lock the door
4
End maintenance
3
Start maintenance
Operation stopped
RUN
MAINTENANCE
Key: Can be removed
LOCK
UNLOCK
RUN
MAINTENANCE
Key: Can be removed
Unlock the door
Operation stopped
Operation double-stopped
Key: Cannot be removed
LOCK
UNLOCK
1
1
2
3
4
2
Same Key
Same Key
A22TK
A22TK
D4JL
D4JL
D4JL
Safety Key
Selector Switch
A22TK
Enabling Grip Switch
Safety Laser Scanner
during maintenance and by using a
By using the
to detect
the presence of operators, equipment malfunctions can be prevented when operators are inside, enabling a higher safety level.
or
Safety Mat
