ACOPOSmulti 8BVP1650HW00.000-1: error 9012 and 4005 return every time I try to switch on the drive

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1

Hello,

I am working on a B&R project with Automation Studio 4.12.6 and I have an intermittent issue on an ACOPOSmulti system. In the physical view, the power supply module is 8BVP1650HW00.000-1.

I get errors 9012 and 4005.

An important detail is this:

  • I can clear the error with Error Reset,

  • but every time I try to switch on / energize the drive again, the system immediately falls back into error,

  • and in some cases, if I completely remove power, wait about 15–20 seconds, and power it on again, the system works normally for some time.

So the reset itself is possible, but the fault comes back again specifically when the drive is enabled.

From the error descriptions, it seems that:

  • 4005 is only a secondary message: controller cannot be switched on because the drive is already in error state,

  • while 9012 may be the real cause: temperature sensor (motor/choke/external) not connected or destroyed.

Because of this, I suspect one of the following:

  • intermittent issue on the motor temperature sensor

  • problem in the feedback / encoder cable

  • wiring / connector issue

  • wrong motor or sensor parameterization

  • less likely, hardware issue on the inverter/power stage

My questions are:

  1. Has anyone seen this behavior with 8BVP1650HW00.000-1?

  2. If Error Reset works, but the error returns immediately at Control On / drive enable, does that point more to a sensor/feedback check during enable rather than to the power supply module itself?

  3. Which ParIDs / diagnostic values would you recommend monitoring to confirm whether the motor temperature sensor signal is dropping out?

  4. Would you recommend checking Network Command Trace or the ACOPOS FIFO / detailed runtime error first?

  5. Could this still be related to firmware / hardware compatibility in AS 4.12.6, or does it look more like a hardware/cabling issue?

One thing I still do not understand is why the issue is temporarily solved after switching off the whole cabinet power for 15–20 seconds.
Could this indicate that the power supply module is not fully resetting until its internal voltages discharge, or is it more likely that a marginal temperature sensor / feedback / wiring problem only disappears after a full cold start?

Any advice on the best diagnostic path would be appreciated.

Thank you.

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2

Hello,

It is not clear if this is a error since first commissioning or if the machine was operating a while and now has the issue.

  • Check the Wiring of the Sensor (EMV could cause issues).
  • Check the Resistance with a Multimeter

Previous Discussion about Choke Temperature Sensor

Error 9012 ACOPOS

ParIDs for Temperatuer Sensor

I would start to check this ParID vs the Value of the Multimeter.

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Greetings
Michael

3

Hello everyone,

The issue has been resolved with the help of the local B&R service team, and I would like to share the solution here in case it helps others.

If you are using one 8BVF and one 8BVR, the settings can remain at their default values.
The resistance values mentioned earlier apply when two 8BVF units are connected in parallel together with one 8BVR.

In general, the configuration should be adjusted according to the number of filters and shock coils in the system. Since I don’t know the exact number of 8BVF and 8BVR units in your setup, you should refer to the datasheet and enter the corresponding values manually.

You can find the relevant information in the datasheet starting from page 765.

I hope this helps anyone facing a similar issue.

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1 Like
4

Thanks @omer.alumur for sharing the cause of the problem, I don’t think in the common application we have more than one line filter per machine.
Ciao
Valerio