Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 315)

Understanding the Auto-tuning Procedure 13-3
The green enable light (D1) turns on very briefly (approximately
300 ms) and then turns off. This runs only the transistor diagnostics
and leaves the drive disabled after the diagnostics are complete.
Autotune/Dgn Sel is automatically cleared to zero after the
diagnostics have run.
Because the test results depend on your particular system, you can
disable tests that may give questionable or nuisance faults. Use Trans
Dgn Config (parameter 172) to disable individual tests:
Bits 5 and 12 through 15 are reserved. You must leave these bits 0.
To test specific modules within the power structure, you can disable
any transistor or any combination of transistors. You must leave all
transistors enabled under most conditions. Use sound judgement to
verify that power transistor fault conditions do not exist before
disabling tests.
Inverter Dgn1 (parameter 174) and Inverter Dgn2 (parameter 175)
contain the results of the transistor diagnostic tests.
Important: Serious component failures may occur if unverified
power transistor fault conditions are ignored or tests are disabled
before you proceed to run the drive under load.
file: Autotune
group: Autotune Setup
If you want to disable: Then, set this bit:
Current feedback phase U offset tests 0
Current feedback phase W offset tests 1
Shorted power transistor tests 2
Ground fault tests 3
Open transistor, open motor, open current feedback,
open gate drive, and open bus fuse tests
4
Power transistor U upper for all tests 6
Power transistor U lower for all tests 7
Power transistor V upper for all tests 8
Power transistor V lower for all tests 9
Power transistor W upper for all tests 10
Power transistor W lower for all tests 11
Even though you set bits 6 through 11 to disable the individual tests,
you will still get a fault with the other tests if there is an open in an
individual section.
file: Autotune
group: Autotune Status