C50 Robot powerup issue

Electrical error Control Box

Remove all external connections to I/O-interface of Safety Control Board. Check for short circuit

C50A1 Voltage detected at 24V rail before startup

C50A2 Voltage present at unpowered robot

C50A5 Powersupply voltage too low

Check 48 V cable between power supply and SCB

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

Loose wire or incorrect safety configuration

Try the following actions to see which resolves the issue: (A) Check the Teach Pendant cable and connections, (B) Check the settings in the miscellaneous tab in the Safety menu

C50A17 The Euromap67 interface does not respond

Loose wire or incorrect safety configuration

Try the following actions to see which resolves the issue: (A)Check the Euromap67 cable and connections, (B) Check the settings in the miscellaneous tab in the Safety menu

C50A18 Warning, waiting for SafetySYS1

SafetySYS1 = Processor A on Safety Control Board

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

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 PSU1

C50A41 Wrong voltage from PSU2

C50A42 Voltage will not disappear from PSU

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

C50A53 58V generator deviation error

C50A54 5V regulator too low

C50A55 5V regulator too high

C50A56 -4V generator too low

C50A57 -4V generator too high

C50A80 Last CPU reset caused by Low-Power-Reset

C50A81 Last CPU reset caused by Window-Watchdog-Reset

C50A82 Last CPU reset caused by Independent-Watchdog-Reset

C50A83 Last CPU reset caused by Software-Reset

The safety control board was reset on explicit request.

C50A84 Last CPU reset caused by External-Pin-Reset

C50A85 Last CPU reset caused by Brown-Out-Reset

C50A99 Wrong software on PCB

C50A100 Cable not connected

Check cable and connections between robot and Control Box

C50A101 Short circuit in robot detected or wrong robot connected to Control Box

Check robot type. Look for short circuit in cable and in Robot Arm

C50A102 Voltage rising too slowly

C50A103 Voltage failed to reach acceptable level

C50A104 The IMMI module does not respond

Missing IMMI module, hardware failure or incorrect safety configuration

Try the following actions to see which resolves the issue: (A) Check the IMMI module and connections, (B) Check the settings in the Hardware tab in the Safety section of the installation

If you unable to resolve the issue, login to http://myUR.universal-robots.com and create a new case.