Universal Robots UR5 Service Manual page 123

7. Troubleshooting
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
C55A51 Voltage will not
disappear from robot
User Manual
Current distributor error
Current distributor error
Current distributor error
Safety Control Board
hardware fault
Safety Control Board
hardware fault
117
a) Check cable from Safety
Control Board to Current
distributor or 48V Power
supply and Current
distributor for issues
b) Do a Complete rebooting
sequence as per section
5.3.7
a) Check cable from Safety
Control Board to Current
distributor or 48V Power
supply and Current
distributor for issues
b) Do a Complete rebooting
sequence as per section
5.3.7
a) Check cable from Safety
Control Board to Current
distributor or 48V Power
supply and Current
distributor for issues
b) Do a Complete rebooting
sequence as per section
5.3.7
a) Do a Complete rebooting
sequence as per section
5.3.7
b) If this happens more
than two times in a row,
replace Safety Control
Board
a) Do a Complete rebooting
sequence as per section
5.3.7
b) If this happens more
than two times in a row,
replace Safety Control
Board
UR5