P.045 output phase loss enable, P.047 carrier frequency (khz) – Rockwell Automation Liqui-Flo AC GP Vector Drive Version 6.4 User Manual
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LiquiFlo AC Drive, Software Reference Version 6.4
This diagnostic detects phase loss between the drive and the motor. When the
diagnostic is enabled and output phase loss is detected, a drive fault is logged (OPL is
displayed).
The output phase loss diagnostic can be disabled to avoid nuisance faults which may
occur, for example, when a small motor is used with a large Power Module.
This parameter can compensate for acoustic noise by allowing adjustment of the
switching frequency of the transistors in the inverter bridge.
See the LiquiFlo hardware reference manual for the Power Module ratings at a 2 kHz
carrier frequency. See P.095 in this chapter which displays the maximum output
current rating of the drive.
P.045 Output Phase Loss Enable
This parameter is
used to enable the
output phase loss
detection diagnostic.
Parameter Range:
OFF = Disable output phase loss diagnostic
ON = Enable output phase loss diagnostic
Default Setting:
ON
Parameter Type:
Tunable
Refer also to parameters:
N/A
P.047 Carrier Frequency (kHz)
This parameter
selects the drive’s
carrier frequency.
Parameter Range:
2 = 2 kHz carrier frequency
4 = 4 kHz carrier frequency
8 = 8 kHz carrier frequency
Default Setting:
Power Module-dependent, see Appendix C
Parameter Type:
Configurable
Refer also to parameters:
N/A