Safe Troubleshooting; Robot Without Axes' Holding Brakes Are Potentially Lethal - ABB IRC5 Operating Manual

1.7 Safe troubleshooting

1.7.1 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 example, a collapsing manipulator may kill or seriously injure a person standing
beneath it.
Safe handling
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Operating manual - Troubleshooting IRC5
3HAC020738-001 Revision: AA
1.7.1 Robot without axes' holding brakes are potentially lethal
Action
If you suspect that the holding brakes are
non-operational, secure the robot arm
system by some other means before
working on it.
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 under the
manipulator arm.
© Copyright 2005-2018 ABB. All rights reserved.
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.
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