UCC T3 visual diagnostics

A visual indication of the system status is provided by four LEDs on the front panel, providing assistance in diagnosing and rectifying system faults.

UCC T3 front panel 

  
  

LED status key

Description

Green yellow red LEDs

 LED on (green / amber / red)

Red and green flashing LEDs

 LED flashing off / on

Red and green flashing LED

 LED flashing red / green

Clear LED

 LED off

X

 Any condition

 

USB comms

Servo status

Probe seated

Error

Description

Clear LEDClear LEDClear LEDClear LED

No power to UCC T3

X

Yellow LED

X

Clear LED

Download successful, amps not engaged

E-STOP released, amps not engaged

X

Red LED

X

Red LED

Download failed, power cycle required

X

Green and red flash combination

X

Clear LED

E-STOP active

X

Green LED

X

Clear LED

Axes engaged

X

Red and green flashing LED

X

Clear LED

Dynamic braking

X

X

Green flashing LEDRed LED

Scale error

  
  
  

UCC T3 start-up process

When powered on, a self-test and initialisation is performed.

USB comms

Servo status

Probe seated

Error

Description

Clear LEDClear LEDClear LEDClear LED

No power to UCC T3

Clear LEDRed and green flashing LEDClear LEDRed LED

Power applied to UCC T3

Clear LEDRed LEDClear LEDRed flashing LED

Waiting for download

If any of the tests fail, the failure mode is indicated on the status LEDs after about 15 seconds.  When power cycling, a minimum of 10 seconds is recommended between power removal and reconnection.

After the UCC T3 has completed its self-test, the system is ready for the software to be downloaded.  The sequence of the status LEDs is shown below.

USB comms active

Servo status

Probe seated

Error

Description

Clear LEDRed LEDClear LEDRed flashing LED

Waiting for download

Green flashing LEDRed LEDClear LEDRed flashing LED

Downloading, USB data being passed

X

Red LED

X

Clear LED

Download successful