ACS355 faults with #1006 (PAR EXT RO) when I access the internal relay.
I have a ASC355 (with a FENA-11) and use the relay for a sound alert 3 secs before starting the motor. However, sometimes when I clear the relay (to stop the buzzer) the driver faults with PAR EXT RO and goes off-line for some 10 seconds.
I have verified that I write only 0001 and 0000 to the relay word (0134), and the relay works just fine most of the time. It seems to happen when I access the relay with a short time delay (ON and OFF within one second) but such a request must for heavens sake be acceptable.
the procedure that you use is correct, I have verified it in my test unit without errors, but obviously for short time...
What is the FW version in your drive? I have observed a little mistakes in few cases, easily resolved by updating the FW.
Let us know about the results of your test