Universal Robots 3PE Teach Pendant Installation Manual page 9

SAFETY NOTICE
Universal Robots Customers of the UR Teach Pendant with 3PE (3-position enabling
To:
device)
From: Universal Robots Global Technical Compliance
Date: 20 January 2021
SAFETY NOTICE
Subject:
5.9.4
Unexpected motion can occur when a robot application is installed with the following combinations:
• Universal Robots e-Series robot
• UR software versions: 5.9.3 or 5.9.4
• UR Teach Pendant with 3-Position Enabling Device (3PE TP)
• External mode selector switch is connected to the UR Control Box
The risk due to unexpected motion requires all of the following circumstances:
• Automatic mode is selected on the external mode selector switch.
• No protective device is connected to the Safeguard Stop Input of the UR Control Box. (For example:
when using a perimeter interlocked guard, light curtain, or safety scanner ect.).
• The operator uses the Teach Pendant to switch to manual mode for teaching or programming.
• The robot is not moving, but it is capable of moving according to its program/programming.
• The operator moves within reach of the robot/end-effector/workpiece, while holding the Teach
Pendant.
The probability of unexpected motion happening is extremely low, because all of the above combinations
and circumstance are required. As such, note the following:
• All safety functions are active and functioning properly. This includes the 3PE which is not active when
the robot control is in automatic mode.
• The operator is typically more attentive to robot activity due to planned teaching or programming tasks.
• Operator attention is more likely to be directed to the robot application; it is unlikely that the incorrect
Teach Pendant mode indication will be noticed.
To eliminate the risks associated with this issue, update to software version 5.10 or higher. The robot
application can remain operational before updating the software ONLY if the external mode selector switch is
disconnected from the UR Control Box. With 5.9.3 and 5.9.4 after removing the external mode selector, train
personnel to select the mode using the UR Teach Pendant with 3PE.
Software version 5.10 or higher eliminates this issue and Teach Pendant with 3PE owners are urged to
update.
As always, proper inspection and maintenance is required as stated in the UR Service Manual.
Installation Guide
Universal Robots e-Series robots with software version 5.9.3 and
Teach Pendant with 3-Position
Enabling Device