1.9 Movement With and Without Drive Power
1.8 Emergency Stop
Activate the emergency stop push-button to immediately stop all robot motion.
Note: According to IEC 60204-1 and ISO 13850, emergency devices are not safeguards. They are
complimentary protective measures and are not intended to prevent injury.
The risk assessment of the robot application shall conclude if additional emergency stop buttons
are need. Emergency stop push-buttons must comply with IEC 60947-5-5 (see section 5.3.2).
1.9 Movement With and Without Drive Power
In the unlikely event of an emergency situation, where one or more robot joints need to be
moved and robot power is either not possible or not wanted, there are two different ways to
force movements of the robot joints: Note: In a service situation, the brake on the joints can be
released without connected power.
1. Forced back-driving: Force a joint to move by pushing or pulling the robot arm hard. Each
joint brake has a friction clutch which enables movement during high forced torque.
2. Manual brake release: Remove the joint cover by removing the few M3 screws that fix
it. Release the brake by pushing the plunger on the small electromagnet as shown in the
picture below.
WARNING:
1. Moving the robot arm manually is intended for urgent emer-
gency purposes only and might damage the joints.
2. If the brake is released manually, gravitational pull can cause
the robot arm to fall. Always support the robot arm, tool/end
effector and work item when releasing the brake.
UR5/e-Series I-10 Version 3.11
Copyright © 2009–2019 by Universal Robots A/S. All rights reserved.
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