3.3.7 Manually releasing the brakes
Introduction to manually releasing the brakes
This section describes how to release the holding brakes for the axes motors.
Location of the brake release unit
The brake release unit is located as shown in the figure.
xx1900000252
Releasing the brakes
This procedure describes how to release the holding brakes when the robot is
equipped with a brake release unit.
Note
Action
The internal brake release unit is equipped with a
button for controlling the axes brakes.
Note
If the robot is not connected to the controller, power
must be supplied to the connector R1.MP according
to the section
Supplying power to connector R1.MP
.
1
DANGER
When releasing the holding brakes, the robot axes
may move very quickly and sometimes in unexpec-
ted ways.
Make sure no personnel is near or beneath the ro-
bot.
2
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68
Product manual - IRB 390
3HAC066566-001 Revision: B
© Copyright 2020 - 2021 ABB. All rights reserved.
3 Installation and commissioning
3.3.7 Manually releasing the brakes
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