C53A2 IO Overcurrent
detected. Max is
600mA
C55A Safety system error Safety system malfunction 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
C55A23 Safety relay error
(minus connection)
Current distributor error a) Check cable from Control
Board to Current distributor
or 48V Power supply and
Current distributor for issues
b) Do a Complete rebooting
sequence
C55A24 Safety relay error
(plus connection)
Current distributor error a) Check cable from Control
Board to Current distributor
or 48V Power supply and
Current distributor for issues
b) Do a Complete rebooting
sequence
C55A33 Safety relay error (a
relay is stuck)
Current distributor error a) Check cable from Control
Board to Current distributor
or 48V Power supply and
Current distributor for issues
b) Do a Complete rebooting
sequence
C55A34 Safety relay error
(relays are not on)
Current distributor error a) Check cable from Control
Board to Current distributor
or 48V Power supply and
Current distributor for issues
b) Do a Complete rebooting
sequence
C55A50 Voltage present at
unpowered 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
UR3 106 Service Manual
7.Troubleshooting
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