Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 145)

Troubleshooting the FlexPak 3000 Drive 13-13
13.3 Phase Locked Loop (PLL) Maximum Error
If your drive power is supplied by a source that cannot maintain a suitable fixed
frequency output (such as an alternator), you can adjust this parameter to prevent
faults related to line synchronization.
PLL MAXIMUM ERROR (P.308)
Maximum allowable
change in line period
per AC line cycle. Parameter Range: 2 to 1000
µ
sec
Default Setting: 2
µ
sec
Parameter Type: Tunable
OIM Menu Path(s): Current Minor Loop ( CML ) - Three Phase
AC Line
This parameter should only be increased when drive power is supplied by a source
that cannot maintain a suitable fixed frequency output (such as an alternator) to
prevent faults related to line synchronization.