Safety Stops; What Is An Emergency Stop - ABB IRB 2600 Product Manual

1 Safety

1.2.5.1 What is an emergency stop?

1.2.5 Safety stops

1.2.5.1 What is an emergency stop?
Definition of emergency stop
An emergency stop is a state that takes precedence over all other robot controls,
causes all controlled hazards to stop, removes drive power from the robot actuators,
remains active until it is reset, and can only be reset by manual action.
An emergency stop state means that all power is disconnected from the robot
except for the manual brake release circuits. You must perform a recovery
procedure, that is, resetting the emergency stop button and pressing the Motors
On button, to return to normal operation.
The robot system can be configured so that the emergency stop results in either:
The default setting is a category 0 stop. However, category 1 stops are preferred
since they minimize unnecessary wear on the robot and the actions needed to
return the system back to production. Consult your plant or cell documentation to
see how your robot system is configured.
The emergency stop function may only be used for the purpose and under the
conditions for which it is intended.
The emergency stop function is intended for immediately stopping equipment
in the event of an emergency.
Emergency stop should not be used for normal program stops as this causes
extra, unnecessary wear on the robot.
For how to perform normal program stops, see .
Classification of stops
The safety standards that regulate automation and robot equipment define
categories in which each type of stop applies:
If the stop is...
category 0 (zero)
category 1
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• A category 0 stop, immediately stopping the robot actions by disconnecting
power from the motors.
• A category 1 stop, stopping the robot actions with power available to the
motors so that the robot path can be maintained. When completed, power
is disconnected from the motors.
Note
Note
Note
... then it is classified as...
uncontrolled
controlled
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Product manual - IRB 2600
3HAC035504-001 Revision: G