Universal Robots E Series Service Manual page 93

C44A4 Wrist 2
C44A5 Wrist 3
C44A6 Tool
C44A80 CRC Check failure on primary bus.
C45A AD-Converter error
C46A Loose gearbox or bad encoder mounting
C47A AD-Converter hit low limit
C49A RS485 receive warning
C49A200 Secondary RS485 bus is down
C50A Robot powerup issue
C50A1 Voltage detected at 24V rail before startup
C50A2 Voltage present at unpowered robot
C50A5 Powersupply voltage too low
C50A6 Powersupply voltage too high
C50A11 Voltage not detected at 24V rail after startup
C50A15 Warning, waiting for SafetySYS2
C50A16 The Teach Pendant does not respond
C50A17 The Euromap67 interface does not respond
C50A18 Warning, waiting for SafetySYS1
C50A19 Warning, Waiting for a valid \euromap67
activated\" status bit from secondary Safety
Control Board"
C50A20 5V, 3V3 or ADC error (5V too high)
C50A21 5V, 3V3 or ADC error (5V too low)
C50A22 Robot current sensor reading too high
C50A23 Robot current sensor reading too low
C50A24 48V not present (Check internal connection)
C50A25 Robot voltage present at 48V PSU powereup
C50A26 Voltage present on unpowered 48V power
supply
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Most likely an interference on the
communication bus.
Mechanical problem in gear related to encoder
mounting
EMC issue external or electronics internal
Bus for: Teach Pendant, Processor A and
Processor B on Control Board
Electrical error control box
Loose wire or incorrect safety configuration
Loose wire or incorrect safety configuration
SafetySYS1 = Processor A on Safety Control
Board
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a) Do a Complete rebooting sequence
b) If this happens more than two times in a row, replace joint
Check grounding and shielding for EMC problems
Check TCP/IP-12V cable to Teach Pendant
Remove all external connections to I/O-interface of Safety Control
Board. Check for short circuit
Check 48 V cable between power supply and Control Board
a) Check the Teach Pendant cable and connections.
b) Check the settings in the miscellaneous tab in the Safety menu
a) Check the Euromap67 cable and connections.
b) Check the settings in the miscellaneous tab in the Safety menu
Service Manual e-Series (EN) 1.1.8