Universal Robots ur3 Original Instructions Manual page 71

CODE_50A53 58V generator deviation error
CODE_50A54 5V regulator too low
CODE_50A55 5V regulator too high
CODE_50A56 -4V generator too low
CODE_50A57 -4V generator too high
CODE_50A80 Last CPU reset caused by Low-
Power-Reset
CODE_50A81 Last CPU reset caused by
Window-Watchdog-Reset
CODE_50A82 Last CPU reset caused by
Independent-Watchdog-Reset
CODE_50A83 Last CPU reset caused by
Software-Reset
CODE_50A84 Last CPU reset caused by
External-Pin-Reset
CODE_50A85 Last CPU reset caused by
Brown-Out-Reset
CODE_50A99 Wrong software on PCB
CODE_50A100 Cable not connected
CODE_50A101 Short circuit in robot detected
or wrong robot connected to
control box
CODE_50A102 Voltage rising too slowly
CODE_50A103 Voltage failed to reach
acceptable level
CODE_51 CRC check failure on
secondary bus
CODE_51A0 Processor B
CODE_51A1 Primary screen processor
CODE_51A2 Secondary screen processor
CODE_51A3 Primary E67
CODE_51A4 Secondary E67
CODE_53 IO overcurrent detected
CODE_53A1 IO overcurrent detected, max
is 800mA
CODE_53A2 IO overcurrent detected, max
is 600mA
CODE_55 Safety system error
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Robot Problem: Robot Cable is
not detected
Robot Problem: 48V or wrong
robot type
Robot Problem: 48V
Robot Problem: 48V
Safety Control Board error
Safety Control Board error
Tool error
Safety system malfunction
71
Check robot type. Look for
short circuit In cable and in
robot arm.
Remove all external
connections to I/O-
interface of Safety Control
Board. Check for short
circuit
Remove all external
connections to I/O-
interface of Safety Control
Board. Check for short
circuit
Remove tool connector.
Check for short circuit
Check Motherboard, Safety
Control Board,
Screenboard, Current
distributor( Euromap, if
installed ). Bypass safety
connections to I/O-
interface of Safety Control
Servicemanual_UR3_en_rev3.1.2