Safety Stops; What Is An Emergency Stop - ABB IRB 140 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 overrides any other manipulator control,
disconnects drive power from the manipulator motors, stops all moving parts, and
disconnects power from any potentially dangerous functions controlled by the
manipulator system.
An emergency stop state means that all power is disconnected from the manipulator
except for the manual brake release circuits. You must perform a recovery
procedure, i.e, resetting the emergency stop button and pressing the Motors On
button, in order to return to normal operation.
The manipulator system can be configured so that the emergency stop results in
either:
The default setting is an uncontrolled stop. However, controlled stops are preferred
since they minimize extra, unnecessary wear on the manipulator and the actions
needed to return the manipulator system back to production. Please consult your
plant or cell documentation to see how your manipulator system is configured.
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• An uncontrolled stop, immediately stopping the manipulator actions by
disconnecting power from the motors.
• A controlled stop, stopping the manipulator actions with power available to
the motors so that the manipulator path can be maintained. When completed,
power is disconnected from the motors.
Note
The emergency stop function may only be used for the purpose and under the
conditions for which it is intended.
Note
The emergency stop function is intended for immediately stopping equipment
in the event of an emergency.
Note
Emergency stop should not be used for normal program stops as this causes
extra, unnecessary wear on the manipulator.
For how to perform normal program stops, see section Stopping programs in
Operating manual - IRC5 with FlexPendant.
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3HAC027400-001 Revision: K