Universal Robots UR3 Service Manual page 119

7. Troubleshooting
C75A64 Signal low =Too far
from magnetic ring
C75A128 Signal saturation
=Too close to
magnetic ring
C75A200 Position from joint
encoder does not
change while motor
is running
C76A Joint encoder
communication CRC
issue
C77A Sudden position
change detected on
the joint-encoder
C78A Large sudden
position change
detected on the
joint-encoder
C85A200 Position from motor
encoder does not
change while motor
is running
C85A Motor encoder error
C100A Robot changed mode Status warning, general
C101A Real Robot
Connected
C102A Real Robot not
connected –
Simulating Robot
Service Manual
Error between sensor and
joint circuit
The position reading from
the encoder was different
than expected.
The position reading from
the encoder was severely
different than expected, the
latest measurement was
discarded. The argument
relates to the size of the
position change.
mode change
113
a) Do a Complete rebooting
sequence.
b) Check grounding and
shielding for EMC problems.
c) If this happens more than
two times in a row, replace
joint
a) Do a Complete rebooting
sequence.
b) Check grounding and
shielding for EMC problems.
c) If this happens more than
two times in a row, replace
joint
Check connections or very
heavy electrical noise
Check preceding errors in log
history
UR3