4.2 Electrical warnings and cautions
DANGER:
1. Make sure that all equipment not rated for water exposure re-
mains dry. If water comes inside 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. Minus connections are referred to as “GND” and are connected
to the shield of the robot and the controller box. All mentioned
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 grounding con-
ductor shall have at least the current rating of the highest cur-
rent 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.
UR5/CB3 I-20 Version 3.1 (rev. 17782)
Copyright © 2009-2015 by Universal Robots A/S. All rights reserved.
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