ABB IRC5 User Manual

1 Safety
1.2.5.3. What is a safety stop?
3HAC021313-001 Revision: K24
© Copyright 2004-2008 ABB. All rights reserved.
1.2.5.3. What is a safety stop?
Definition of safety stops
A safety stop means that only the power to the robot motors is disconnected. There is no
recovery procedure. You need only to restore motor power to recover from a safety stop.
Safety stop is also called protective stop.
The robot system can be configured so that the stop results in either:
• An uncontrolled stop, immediately stopping the robot actions by disconnecting power
from the motors.
• A controlled stop, stopping the robot actions with power available to the motors so that
the robot path can be maintained. When completed, power is disconnected.
The default setting is controlled stop.
Controlled stops are preferred since they minimize extra, unnecessary wear on the robot and
the actions needed to return the robot system back to production. Please consult your plant or
cell documentation to see how your robot system is configured.
NOTE!
The safety stop function may only be used for the purpose and under the conditions for which
it is intended.
NOTE!
Safety stop should not be used for normal program stops as this causes extra, unnecessary
wear on the robot. How to perform normal program stops, see Stopping programs.
Classification of stops
The safety standards that regulates automation and robot equipment defines categories in
which each type of stop applies:
Type of safety stops
Safety stops are activated through special signal inputs to the controller, see Product manual
- IRC5. The inputs are intended for safety devices such as cell doors, light curtains, or light
beams.
NOTE!
Use normal program stop for all other type of stops.
If the stop is... ... then it is classified as...
uncontrolled category 0 (zero)
controlled category 1
Safety stop: Description:
Automatic mode stop (AS) Disconnects drive power in automatic mode.
In manual mode this input is inactive.
General stop (GS) Disconnects drive power in all operating modes.
Superior stop (SS) Disconnects drive power in all operating modes.
Intended for external equipment.

ABB IRC5 Specifications

General

Brand	ABB
Model	IRC5
Category	Controller
Language	English