Universal Robots UR12e User Manual page 59

7. Installation
User Manual
CAUTION
Disturbing signals with levels higher than those defined in the specific IEC
standards can cause unexpected behaviors from the robot. Be aware of the
following:
•
The robot has been tested according to international IEC standards for
ElectroMagnetic Compatibility (EMC). Very high signal levels or
excessive exposure can damage the robot permanently. EMC problems
are found to happen usually in welding processes and are normally
prompted by error messages in the log. Universal Robots cannot be held
responsible for any damages caused by EMC problems.
•
I/O cables going from the Control Box to other machinery and factory
equipment may not be longer than 30m, unless additional tests are
performed.
GROUND
Negative connections are referred to as Ground (GND) and are connected to the
casing of the robot and the Control Box. All mentioned GND connections are
only for powering and signalling. For PE (Protective Earth) use the M6-size
screw connections marked with earth symbols inside the Control Box. The
grounding conductor shall have at least the current rating of the highest current
in the system.
READ MANUAL
Some I/Os inside the Control Box can be configured for either normal or safety-
related I/O. Read and understand the complete Electrical Interface chapter.
60 UR12e