Troubleshooting

UCC S5 visual diagnostics

A visual indication of the system status provided by a multicoloured LED on the front panel. The LED provides assistance in diagnosing system faults.

UCC S5 front panel image

LED status key:

LED

Description

UCC T5 visual diagnostics - LED on

LED on

UCC T3-2 visual diagnostics - LED flashing off_on

LED flashing off / on

UCC T3-2 visual diagnostics - Green and red flash

LED flashing green / red

UCC T3-2 visual diagnostics - No LED

LED off

UCC T3-2 visual diagnostics - Red and blue flash

LED flashing red / blue

LEDDescription
UCC T3-2 visual diagnostics - No LED

No LED - no power to UCC S5

UCC T3-2 visual diagnostics - Continuous red

Continuous LED - problem with comms link - reboot UCC S5 and configure IP

UCC T3-2 visual diagnostics - Green flash

Slow flash - waiting for download

UCC T3-2 visual diagnostics - Continuous green

Continuous light - download successful

UCC T3-2 visual diagnostics - Red flash

Fast flash (5 Hz) - IP configuration mode

UCC T3-2 visual diagnostics - Dual flash

Slow flash - controller booting

UCC T3-2 visual diagnostics - Internal timeout

Internal timeout - reboot UCC S5

UCC T5 visual diagnostics - PH20 head has problem - DSP watchdog triggered

REVO-2 head has problem - DSP watchdog triggered

UCC T5 visual diagnostics - PH20 head has problem - overcurrent detected

REVO-2 head has problem - overcurrent detected

UCC T3-2 visual diagnostics - Green flash

Fast flash (5 Hz) - communications error - reboot required

UCC T3-2 visual diagnostics - Green and red flash

Slow flash - scale error - reboot required

UCC T3-2 visual diagnostics - Red and blue flash

Slow flash - problem with download - reboot required (check file type)

UCC T3-2 visual diagnostics - Continuous blue

Continuous LED - UCC S5 overheated

UCC T3-2 visual diagnostics - Blue flash

Slow flash - unit does not have controller ID - return to Renishaw

UCC T3-2 visual diagnostics - Blue flash

Fast flash (5 hz) - no controller ID in IP configuration mode - return to Renishaw

 

Fatal faults

Situations can occur that make it inadvisable or dangerous to continue using the CMM servo system. These are known in this document and UCCassist-2 as fatal faults. A list of fatal faults are shown below and will be indicated through the user's software (for example UCCserver);

  • A report of the emergency stop switch being active
  • Air pressure is too low
  • Crash switch operated, if fitted
  • A scale reading failure
  • An indicated overspeed (calculated from the rate of change of position)
  • Outer limit switch active

NOTE: Other faults not classed as fatal can prevent the CMM's operation.

Motors will not engage / re-engage

Symptoms

Either the servo drives will not engage when the controller has been sent the ‘engage' command, or the drives have disengaged automatically and will not re-engage.

Possible causes (or reported causes)

After the unit is switched on and before the system is allowed to engage, it must be configured for motion (i.e. the machine, servo and move parameters must be sent to the controller).

Any of the 'fatal faults' will prevent the system from engaging. In addition, the following will disengage the servo motors;

  • A reported failure from a servo power amplifier (amplifier feedback signal)
  • SPA being incorrectly configured.
  • The absence of the feedback signal from the motor contactor

The following list can also inhibit drive engagement or re-engagement

  • The probe being deflected
  • Any inner limit switch being operated or a soft limit exceeded

Tests / cures

UCCassist-2 can be used for further help with this by displaying the system status, the status bytes and signals.

The amplifier and motor contactor feedback signals can also be examined using the ‘input signals' window in UCCassist-2.

NOTE: A scale error will cause the UCC S5 to enter an error state which is not recoverable within a metrology application environment. If a scale error occurs it will be necessary to reinitialise the installation due to the possibility of lost scale counts and metrology being affected.