54 maximum voltage, 55 maximum freq – Rockwell Automation Liqui-Flo DBT Reach Drive User Manual

Page 36

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3-10

DBT Reach Drive User Manual

SV Economize = Allows the drive to automatically adjust output voltage as the load
changes to minimize current supplied to the motor. The voltage is adjusted by means
of flux current adaptation.

Custom V/Hz = Allows the user to tailor the volts/hertz curve by adjusting parameters
Maximum Voltage (54), Maximum Frequency (55), Run Boost (70), Break Voltage (71)
and Break Frequency (72).

Fan/Pmp V/Hz = This mode sets a fan load volts/hertz curve profile exponential to
base frequency (and linear from base to maximum frequency). Run Boost (70) can
offset the low speed curve point.

FVC Vector = This mode requires autotuning of the motor, both coupled and
uncoupled to the load.

Sets the highest voltage the drive will output.

Sets the maximum allowable frequency the drive will output. Note that this is not
maximum speed, which is set in parameter 82. Refer to figure 3.1.

54

Maximum Voltage

Range:

(Rated Volts x 0.25) to Rated Volts [0.1 VAC]

Default:

Drive Rated Volts

Access:

2

Path: Motor Control>Torq Attributes

See also:

55

Maximum Freq

Range:

5.0 to 420.0 Hz [0.1 Hz]

Default:

110.0 or 130.0 Hz

Access:

2

Path: Motor Control>Torq Attributes

See also:

83

!

ATTENTION: The user is responsible for ensuring that the driven
machinery, all drive-train mechanisms, and application material are
capable of safe operation at the maximum operating speed of the drive.
Overspeed detection in the drive determines when the drive shuts down.
The factory default for overspeed detection is set to 10.0 Hz (or 300.0
RPM) greater than the Maximum Speed (82). Failure to observe this
precaution could result in equipment damage, sever injury or loss of life.

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