Universal Robots UR5 Service Manual page 122

C51A0 Processor B
C51A1 Primary screen
processor
C51A2 Secondary screen
processor
C51A3 Primary E67
C51A4 Secondary E67
C53 IO overcurrent
detected
C53A1 IO overcurrent
detected, max is
800mA
C53A2 IO overcurrent
detected, max is
600mA
C55 Safety system error
C55A23 Safety relay error
(minus connection)
UR5
CRC check failure on Safety
processor 1 in Teach
pendant
CRC check failure on Safety
processor 2 in Teach
pendant
Safety Control Board error
Safety Control Board error
Tool error
Safety system malfunction
Current distributor error
116
7. Troubleshooting
Remove all external
connections to I/O's. Check
for short circuit
Remove all external
connections to I/O's. Check
for short circuit
Remove all external
connections to I/O's. Check
for short circuit
a) Check Motherboard,
Safety Control Board,
Screenboard, Current
distributor (Euromap, if
installed).
b) Check safety devices
and cables/connections to
these devices.
c) 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
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