Universal Robots UR5 Service Manual page 120

C50A24 48V not present
(Check internal
connection)
C50A25 Robot voltage present
at 48V Power supply
powerup
C50A26 Voltage present on
unpowered 48V power
supply
C50A27 12V, 3V3 or ADC error
(12V too high)
C50A28 12V, 3V3 or ADC error
(12V too low)
C50A29 Analog I/O error (-12V
too high)
C50A30 Analog I/O error (-12V
too low)
C50A31 The other safetySYS
do not initialize
C50A40 Wrong voltage from
Power supply1
C50A41 Wrong voltage from
Power supply2
C50A42 Voltage will not
disappear from Power
supply
C50A43 Warning, waiting for
CB2 type answer from
primary processor
C50A50 Processor A 3.3V
supply voltage out of
bounds
C50A51 Robot voltage below
threshold
C50A52 Robot voltage above
threshold
UR5
This error can have several root causes and you have to
measure the voltage some places.
There are 3 different components that could be the root
cause and you have to measure the voltage to determine
which one of them that is the faulty one.
- 48 V power supply
- Current distributor
- Safety Control Board.
Find the schematic drawing in this service manual
114
7. Troubleshooting
User Manual