ZPU5000 displays Not Ok(*) on all channels

[Yvan Turcotte]

In some situations, the ZPU can display Not Ok (*) on all channels and the LEDs on modules in the back might be turned on :


It’s sometimes possible to take sampling measurements but not trendings.  During the boot process, all modules will show a Failed status during the configuration.

Three possibilities can create this issue :

• Power supply issue (ZPU5000 version P/N 9183-06G00-22X or less)
• One or more modules generate noise on internal communication line( all ZPU5000 versions)
• Uncommon situation : the ZPU lost his BIOS settings and need to be reset( version P/N 9183-06G00-204 or less)

First possibility : check the back of the ZPU.  If all modules’s LED are light off, validate if the power supply in the back of the ZPU is defective by following this procedure :
https://www.youtube.com/watch?v=JfR0D8E1Hak
It’s possible to order a power supply to replace it and change it by following this procedure :
https://www.youtube.com/watch?v=SyQa3hvNFLk

To fix the second situation :

• Remove power of the ZPU
• Unscrew the captive screws of the modules
  
• Pull all modules (analogs and control) except the first analog one. No need to remove them completely .
• Power on the ZPU and check if the first module will be configured and display values.
• If it’s not working, remove power, remove this module and try with another one.
• If it’s working, remove power and insert another module.  Repeat this procedure until identification of the defective module(s).

To fix the last situation :

• Power off and open the ZPU  
• Identify the BAT jumper and remove it.  Wait at least 5-10 minutes
   
• Put back the jumper and power on the ZPU.  Wait to check if the modules are now working properly

If both last situations failed, unfortunately, you will probably need to send the ZPU to the VibroSystM factory to fix it.