The B&R 8LS series motors are starting to come equipped with a new hybrid power/feedback connector. These motor models can be identified by these feedback types in their model code: S0, S1, S2, S3, etc. B&R is storing a new memory data format in these specific models that we don't yet have decoded.
We do not yet offer a mating test cable for these connectors, however, you can often test the encoder using one of our standard "direct-to encoder" test cables such as the TI-5668. Below are the pinouts of the hybrid connector.
As can be seen below, our current B&R Memory Test reports will often look incorrect since we are not yet decoding this newest memory format. In particular, the highlighted fields in red pictured below are not correct, while the green fields appear to be accurate. Do not use the alignment data from our current reports on these new hybrid connections. Please record the incoming alignment for +U-V and +U-W and send to us with the encoder memory file for further development.
After reviewing many of these new hybrid encoder files, we are beginning to suspect that B&R is no longer storing a unique alignment (commutation offset) in the encoder memory. We have seen several new drives comes out recently that appear to 'auto-phase' to however the encoder is aligned to the motor. Even this literature from B&R seems to confirm this on their latest ACOPOS drives.
Our best advice for now for servicing these motors is to put the encoder back to the angle it came in at. If that alignment was lost, then installing the encoder to any random position should work as well. We are working on our B&R memory test software to better present these new hybrid files. Even though the current report does not display correctly, you can still save and program these hybrid memory files successfully.
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