Universal Robots 2014350001, Service Manual, Page: 114 / 238

C55A51 Voltage will not
disappear from robot Safety Control Bord
hardware fault a) Do a Complete rebooting
sequence.
b) If this happens more than
two times in a row, replace
Control Board
C55A52 5V, 3V3 or ADC error
(5V too low) Safety Control Bord
hardware fault a) Do a Complete rebooting
sequence.
b) If this happens more than
two times in a row, replace
Control Board
C55A53 5V, 3V3 or ADC error
(5V too high) Safety Control Bord
hardware fault a) Do a Complete rebooting
sequence.
b) If this happens more than
two times in a row, replace
Control Board
C55A90 Bootloader error,
robot voltage too low
or current too high
C55A91 Bootloader error,
robot voltage too
high
C55A100 Safety violation
C55A101 Safety Channel Error
In Safety Control
Board
C55A102 Safety Channel Error
In Screen
C55A103 Safety Channel Error
In Euromap67
Interface
C55A109 Received fault
message from
Controller
C55A110 Safety State is
changing too often
C55A111 On/Off State is
changing too often
C55A112 Robot current
sensors readings
differ
UR5 108 Service Manual
7. Troubleshooting
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