Universal Robots UR10 Service Manual page 75

C44A1 Joint 1 CRC check failure on
primary bus
C44A2 Joint 2 CRC check failure on
primary bus
C44A3 Joint 3 CRC check failure on
primary bus
C44A4 Joint 4 CRC check failure on
primary bus
C44A5 Joint 5 CRC check failure on
primary bus
C44A6 Tool CRC check failure on
primary bus
C44A80 CRC Check failure on primary
bus
C45 AD-Converter error
C46 Loose gearbox or bad encoder
mounting
C47 AD-Converter hit low limit
C48 Powerbus voltage drop
detected.
C49 RS485 receive warning
C49A200 Secondary RS485 bus is down
C50 Robot powerup failure
C50A1 Voltage detected at 24V rail
before startup
C50A2 Voltage present at unpowered
robot
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Serial communication problem
with joint or secondary bus
node
Serial communication problem
with joint or secondary bus
node
Serial communication problem
with joint or secondary bus
node
Serial communication problem
with joint or secondary bus
node
Serial communication problem
with joint or secondary bus
node
Serial communication problem
with tool or secondary bus
node
Most likely an interference on
the communication bus
Mechanical problem in gear
related to encoder mounting
EMC issue external or
electronics internal
Error on 48V powerbus to
robot arm
Bus for: Teach Pendant,
Processor A and Processor B
on the Safety Control Board.
Electrical error control box
75
Replace joint 1
Replace joint 2
Replace joint 3
Replace joint 4
Replace joint 5
Replace Tool mounting
bracket
a) Check green 2-wire
connectors and wires in
joints, b) If the error
reappears contact your
local service provider for
assistance.
Replace Item
Replace joint
a) Check grounding and
shielding for EMC
problems. B) Replace Item
Check 48V output from
PSU. Check current-
distributor PCB.
Replacement of 48V PSU or
current-distributor is
necessary
Check TCP/IP-12V cable to
Teach Pendant
Remove all external
connections to I/O-
interface of Safety Control
Board. Check for short
circuit. Argument of error
code specifies in detail
what causes the error.
Servicemanual_UR10_en_3.1.3