Universal Robots UR3 Service Manual page 112

C53A2 IO Overcurrent
detected. Max is
600mA
C55A Safety system error
C55A23 Safety relay error
(minus connection)
C55A24 Safety relay error
(plus connection)
C55A33 Safety relay error (a
relay is stuck)
C55A34 Safety relay error
(relays are not on)
C55A50 Voltage present at
unpowered robot
UR3
Safety system malfunction
Current distributor error
Current distributor error
Current distributor error
Current distributor error
Safety Control Bord
hardware fault
106
7. Troubleshooting
a) Check Motherboard,
Control Board, Screenboard,
Current distributor (Euromap,
if installed).
b) Check safety devices and
cables/connections to these
devices.
c) Do a Complete rebooting
sequence
a) Check cable from Control
Board to Current distributor
or 48V Power supply and
Current distributor for issues
b) Do a Complete rebooting
sequence
a) Check cable from Control
Board to Current distributor
or 48V Power supply and
Current distributor for issues
b) Do a Complete rebooting
sequence
a) Check cable from Control
Board to Current distributor
or 48V Power supply and
Current distributor for issues
b) Do a Complete rebooting
sequence
a) Check cable from Control
Board to Current distributor
or 48V Power supply and
Current distributor for issues
b) Do a Complete rebooting
sequence
a) Do a Complete rebooting
sequence.
b) If this happens more than
two times in a row, replace
Control Board
Service Manual