1. Hardware
  2. Expansion modules
  3. XC4x
  4. Questions
0
Answered

XC42 blink code R4:3 3:1:6

Adolfo 2 years ago in Expansion modules / XC4x • updated by Gustav Widén (System support) 2 months ago • 3

Hello,

We have a customer with this error pattern in one of the XC42 installed in the machine: R4:3 3:1:6

But we can’t find this pattern in the manual.

Can you explain what this blink code means, please?

Best regards 

Adolfo

GOOD, I'M SATISFIED
Satisfaction mark
Satisfaction mark by Adolfo 2 months ago
Gustav Widén (System support) 2 years ago

In brief, it is from a diagnostic function on the IC that manage voltages on the module. With existing software versions, I know two situations that could trigger the diagnostic function that give this blink: 

One is if you have a VREF error such as an overload that is not taken care of, if you are unlucky this could come when the module tries to reactivate the VREF. 

Another case is if module supply voltage drops down below 6V, but not low enough to restart the module. (this under-voltage could cause different symptoms too)

My suggestion is to cycle power to the system and the XC4 will recover. 

+1
Adolfo 2 years ago

Our customer has found a damaged cable in one of the sensors connected to the Vref.

The cable has been changed, hopefully this will fix the blinking code appearing intermittently.

Thanks for your clues!

Answered
Gustav Widén (System support) 2 months ago

The problem with this being triggered when a VREF overload is not attended can be avoided by upgrading to 7.03. Applies also to MC4x/MC4xFS

58100MC4x/XC4x critical stop could be triggered by VREF overload
Too many restart attempts on shorted VREF could make it overheat and trigger a 4:3 critical stop. VREF restart attempts limited to max 3 failed restarts with 2 second delay in between.

Customer support service by UserEcho