Universal Robots ur3 Service Manual

C71A51 Current sensor test
failed
Sensor reported wrong
current when probed
a) Check joint for damaged or
loose connections.
b) Replace the joint
C71A52 Current sensor test
failed
Sensors reported different
currents when probed
a) Check joint for damaged or
loose connections.
b) Replace the joint
C71A101 Wrong firmware on
RLS encoder
C72A Power Supply Unit
failure
C72A1 0 PSUs are active Power Supply was not able
to deliver 48V
Check power connection
between power supply and
Control Board
C72A2 1 PSU active, but we
expect 2 (UR10)
Power Supply was not able
to deliver 48V or UR10 flash
card in UR5 robot
Check power connection
between power supply and
Control Board and check that
the flash card and robot
match
C72A3 2 PSUs active, but
we expect 1 (UR5)
UR5 flash card in UR10
robot
Check that the flash card and
robot match
C74A Joint encoder
warning
Magnetic encoder error
(absolute encoder).
Argument = sum of C74
errors
C74A1 Invalid decode:
Readhead
misalignment, ring
damaged or external
magnetic field
present.
Check grounding and
shielding for EMC problems
C74A2 Speed reading is not
valid
C74A4 System
error=malfunction or
inconsistent
calibration detected
C74A8 Supply voltage is out
of range
C74A16 Temperature is out
of range
Service Manual 111 UR3
7.Troubleshooting
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Universal Robots ur3 Specifications

General

Brand	Universal Robots
Model	ur3
Category	Robotics
Language	English