Omron A22TK Quick Start Manual page 2

Safety can be ensured, but there is a risk of human error
F r o m
occurring during operation.
Guard Lock Safety-door Switch
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 party locks the door.
The equipment may also be started up while the operator is inside.
I should close it.
Assumed risks
Forgetting to Being
remove the key trapped inside
By using a common key, the risk of human error is reduced in operations
To
from when the door is open/shut until the equipment is started.
Guard Lock Safety-door Switch
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.
Common key
1
Unlock the door
Operation stopped
Guard Lock
Safety-door Switch
D4JL
4
Lock the door
Operation starts
Key: Cannot be removed
Enabling Grip Switch
By using the
Furthermore
the presence of operators, equipment malfunctions can be prevented when operators are inside, enabling a higher safety level.
only
The equipment
started up!
Starting equipment
+
Safety Key Selector Switch (A22TK)
D4JL
UNLOCK LOCK
Key: Can be removed
1
4
I take the key with me when
I enter, so there is no worry
of becoming trapped inside!
D4JL
UNLOCK LOCK
during maintenance and by using a
Guard Lock Safety-door Switch
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.
Different keys
I should close it.
Assumed risks
Forgetting to Being
remove the key trapped inside
Same Key
2
2
3
3
Same Key
Safety Laser Scanner
A22TK
+
Key Selector Switch (A22K)
I'm trapped
inside!
A22TK
MAINTENANCE
Start maintenance
Operation double-stopped
Key: Cannot be removed
Safety Key
Selector Switch
A22TK
A22TK
MAINTENANCE RUN
End maintenance
Operation stopped
Key: Can be removed
Safety Mat
or to detect
RUN
2