ABB IRC5 Operating Manual page 18

1 Safety
1.5.1. DANGER - Robot without axes' holding brakes are potentially lethal!
1.5 Safe Trouble Shooting
1.5.1. DANGER - Robot without axes' holding brakes are potentially lethal!
Description
Since the robot arm system is quite heavy, especially on larger robot models, it is dangerous
if the holding brakes are disconnected, faulty, worn or in any way rendered non-operational.
For instance, a collapsing IRB 7600 arm system may kill or seriously injure a person standing
beneath it.
Elimination
16
Action
1. If you suspect that the holding brakes are
non-operational, secure the robot arm
system by some other means before
working on it.
2. If you intentionally render the holding
brakes non-operational by connecting an
external voltage supply, the utmost care
must be taken!
DANGER!
NEVER stand inside the robot working
area when disabling the holding brakes
unless the arm system is supported by
some other means!
DANGER!
Under no circumstance stand beneath any
of the robot's axes!
Info/illustration
Weight specifications etc. may be found in
the Product manual of each robot model.
How to correctly connect an external
voltage supply is detailed in the Product
manual of each robot model.
3HAC020738-001 Revision: K