Universal Robots ur3 - Page 69

All rights reserved 69 Servicemanual_UR3_en_rev3.1.2
CODE_44A3
Joint 3 CRC check failure on
primary bus
Serial communication problem
with joint or secondary bus
node
Replace joint 3
CODE_44A4
Joint 4 CRC check failure on
primary bus
Serial communication problem
with joint or secondary bus
node
Replace joint 4
CODE_44A5
Joint 5 CRC check failure on
primary bus
Serial communication problem
with joint or secondary bus
node
Replace joint 5
CODE_44A6
Tool CRC check failure on
primary bus
Serial communication problem
with tool or secondary bus
node
Replace Tool mounting
bracket
CODE_44A80
CRC Check failure on primary
bus
Most likely an interference on
the communication bus
a) Check green 2-wire
connectors and wires in
joints, b) If the error
reappears contact your
local service provider for
assistance.
CODE_45
AD-Converter error
Replace Item
CODE_46
Loose gearbox or bad encoder
mounting
Mechanical problem in gear
related to encoder mounting
Replace joint
CODE_47
AD-Converter hit low limit
EMC issue external or
electronics internal
a) Check grounding and
shielding for EMC
problems. b) Replace Item
CODE_48
Powerbus voltage drop
detected.
Error on 48V powerbus to
robot arm
Check 48V output from
PSU. Check current-
distributor PCB.
Replacement of 48V PSU or
current-distributor is
necessary
CODE_49
RS485 receive warning
CODE_49A200
Secondary RS485 bus is down
Bus for: Teach Pendant,
Processor A and Processor B
on the Safety Control Board.
Check TCP/IP-12V cable to
Teach Pendant
CODE_50
Robot powerup failure
Electrical error control box
Remove all external
connections to I/O-
interface of Safty Control
Board. Check for short
circuit. Argument of error
code specifies in details
what causes the error.
CODE_50A1
Voltage detected at 24V rail
before startup
CODE_50A2
Voltage present at unpowered
robot
CODE_50A5
Powersupply voltage too low
CODE_50A6
Powersupply voltage too high
CODE_50A11
Voltage not detected at 24V
rail after startup
24 V to the I/O interface in the
controller
CODE_50A15
Warning, waiting for
SafetySYS2
SafetySYS2 = Processor B on
Safety Control Board