Bedford B550-2001, Installation And Quick Start Manual

Page: 29 / 116

5
VFD-M Series
5-3
This parameter determines the Maximum Output Voltage of the AC drive. The Maximum
Output Voltage setting must be smaller than or equal to the rated voltage of the motor as
indicated on the motor nameplate.
Setting of Pr.05 must be equal to or greater than
setting of Mid-Point Voltage (Pr.07).
Pr.06
Mid-Point Frequency Factory Setting: 1.50
Settings 0.10 to 400.0Hz Unit: 0.1Hz
The parameter sets the Mid-Point Frequency of V/F curve. With this setting, the V/F ratio
between Minimum Frequency and Mid-Point frequency can be determined. Setting of
this parameter must be equal to or greater than Minimum Output Frequency (Pr.08)
and equal to or less than Maximum Voltage Frequency (Pr.04).
Pr.07
Mid-Point Voltage
Settings 230V series 0.1 to 255.0V Factory Setting: 10.0
460V series 0.1 to 510.0V Factory Setting: 20.0
The parameter sets the Mid-Point Voltage of any V/F curve. With this setting, the V/F ratio
between Minimum Frequency and Mid-Point Frequency can be determined. Setting of
this parameter must be equal to or greater than Minimum Output Voltage (Pr.09)
and equal to or less than Maximum Output Voltage (Pr.05).
Pr.08
Minimum Output Frequency Factory Setting: 1.50
Settings 0.10 to 20.00Hz Unit: 0.1Hz
The parameter sets the Minimum Output Frequency of the AC drive. Setting of this
parameter must be equal to or less than Mid-Point Frequency (Pr.06).
Pr.09
Minimum Output Voltage
Settings 230V series 0.1 to 255.0V Factory Setting: 10.0
460V series 0.1 to 510.0V Factory Setting: 20.0
This parameter sets the Minimum Output Voltage of the AC drive. Setting of this
parameter must be equal to or less than Mid-Point Voltage (Pr.07).
B550
Series
sensorless vector frequency drive