Electrical Warnings And Cautions - Universal Robots UR3/CB3 User Manual

UR3/CB3
DANGER:
1. Make sure that all equipment not rated for water exposure re-
mains dry. If water is allowed to enter the product, lockout and
tagout all power and then contact your supplier.
2. Use original cables supplied with the robot only. Do not use
the robot for applications where the cables will be subjected to
flexing. Contact your supplier if longer or flexible cables are
needed.
3. Negative connections are referred to as "GND" and are con-
nected to the shield of the robot and the controller box. All men-
tioned GND connections are only for powering and signalling.
For PE (Protective Earth) use the M6 sized screw connections
marked with earth symbols inside the control box. The ground-
ing conductor shall have at least the current rating of the highest
current in the system.
4. Care must be taken when installing interface cables to the robot
I/O. The metal plate in the bottom is intended for interface ca-
bles and connectors. Remove the plate before drilling the holes.
Make sure that all shavings are removed before reinstalling the
plate. Remember to use correct gland sizes.
CAUTION:
1. The robot has been tested according to international IEC stan-
dards for EMC (ElectroMagnetic Compatibility). Disturbing sig-
nals with levels higher than those defined in the specific IEC
standards can cause unexpected behavior of the robot. 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 mes-
sages in the log. Universal Robots cannot be held responsible
for any damages caused by EMC problems.
2. I/O cables going from the control box to other machinery and
factory equipment may not be longer than 30m, unless extended
tests are performed.
I-30

5.2 Electrical warnings and cautions

Version 3.3.3