Error codes

What a robot’s error code means, from the maker’s own directory, with a link to the page where the maker says what to do about it.

Type the code from the teach pendant, or words from the message. Each directory is grouped the way the maker prints it: by robot generation, then by section.

Clear

483 codes from Universal Robots · page 5 of 13

C55A111 · On/Off State is changing too often

Universal Robots · CB3 and Earlier Models

C55 Safety system error

C55A112 · Robot current sensors readings differ

Universal Robots · CB3 and Earlier Models

C55 Safety system error

C55A120 · Robot current is too high while emergency stopped

Universal Robots · CB3 and Earlier Models

C55 Safety system error

C55A121 · Robot current is too high while safeguard stopped

Universal Robots · CB3 and Earlier Models

C55 Safety system error

C57A1 · Joint did not move or motor encoder is not functioning

Universal Robots · CB3 and Earlier Models

C57 Brake release failure

C57A2 · Large movement detected during brake release

Universal Robots · CB3 and Earlier Models

C57 Brake release failure

C57A3 · Robot was not able to brake release, see log for details

Universal Robots · CB3 and Earlier Models

C57 Brake release failure

C62A1 · Joint temperature: High (80(C)

Universal Robots · CB3 and Earlier Models

C62 Thermal issue

C62A3 · Warning: Static load too high

Universal Robots · CB3 and Earlier Models

C62 Thermal issue

C62A11 · Joint temperature: Shut down (85(C)

Universal Robots · CB3 and Earlier Models

C62 Thermal issue

C62A13 · Shutdown: Static load too high

Universal Robots · CB3 and Earlier Models

C62 Thermal issue

C71A0 · Hardware is size0, wrong firmware at the joint

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C71A1 · Hardware is size1, wrong firmware at the joint

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C71A2 · Hardware is size2, wrong firmware at the joint

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C71A3 · Hardware is size3, wrong firmware at the joint

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C71A4 · Hardware is size4, wrong firmware at the joint

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C71A5 · Invalid hardware revision

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C71A6 · ADC calibration failed

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C71A7 · Unknown error result

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C71A8 · Motor short circuit to ground or H-bridge problems

Universal Robots · CB3 and Earlier Models

C71 Startup check errorCause given

C71A9 · Motor indication signal does not work

Universal Robots · CB3 and Earlier Models

C71 Startup check errorCause given

C71A10 · Phase 1 is unconnected or not working

Universal Robots · CB3 and Earlier Models

C71 Startup check errorCause given

C71A11 · Phase 2 is unconnected or not working

Universal Robots · CB3 and Earlier Models

C71 Startup check errorCause given

C71A12 · Phase 3 or multiple phases is unconnected or not working

Universal Robots · CB3 and Earlier Models

C71 Startup check errorCause given

C71A50 · Current sensor test failed

Universal Robots · CB3 and Earlier Models

C71 Startup check errorCause given

C71A51 · Current sensor test failed

Universal Robots · CB3 and Earlier Models

C71 Startup check errorCause given

C71A52 · Current sensor test failed

Universal Robots · CB3 and Earlier Models

C71 Startup check errorCause given

C71A101 · Wrong firmware on motor encoder

Universal Robots · CB3 and Earlier Models

C71 Startup check error

C72A1 · 0 PSUs are active

Universal Robots · CB3 and Earlier Models

C72 Power Supply Unit failureCause given

C72A2 · 1 PSU active, but we expect 2 (UR10)

Universal Robots · CB3 and Earlier Models

C72 Power Supply Unit failureCause given

C72A3 · 2 PSUs active, but we expect 1 (UR5)

Universal Robots · CB3 and Earlier Models

C72 Power Supply Unit failureCause given

C74A1 · Invalid decode: Readhead misalignment, ring damaged or external magnetic field present.

Universal Robots · CB3 and Earlier Models

C74 Joint encoder warning

C74A2 · Speed reading is not valid

Universal Robots · CB3 and Earlier Models

C74 Joint encoder warning

C74A4 · System error=malfunction or inconsistent calibration detected

Universal Robots · CB3 and Earlier Models

C74 Joint encoder warning

C74A8 · Supply voltage is out of range

Universal Robots · CB3 and Earlier Models

C74 Joint encoder warning

C74A16 · Temperature is out of range

Universal Robots · CB3 and Earlier Models

C74 Joint encoder warning

C74A32 · Signal lost =Misaligned readhead or damaged ring

Universal Robots · CB3 and Earlier Models

C74 Joint encoder warning

C74A64 · Signal low =Too far from magnetic ring

Universal Robots · CB3 and Earlier Models

C74 Joint encoder warning

C74A128 · Signal saturation =Too close to magnetic ring

Universal Robots · CB3 and Earlier Models

C74 Joint encoder warning

C75A1 · Invalid decode: Readhead misalignment, ring damaged or external magnetic field present.

Universal Robots · CB3 and Earlier Models

C75 Joint encoder error