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Chapter 5 Parameters|VFD-M-D Series

Revision Jan. 2007, MDE2, SW V1.05 5-29

Group 1: Basic Parameters

1 - 00

Maximum Output Frequency (Fmax)

Unit: 0.01

Settings 50.00 to 400.0 Hz Factory Setting: 60.00

 This parameter determines the AC motor drive’s Maximum Output Frequency.

1 - 01 Maximum Voltage Frequency (Fbase) Unit: 0.01

Settings 0.10 to 400.0Hz Factory Setting: 60.00

 This value should be set according to the rated frequency of the motor as indicated on the

motor nameplate. Maximum Voltage Frequency determines the v/f curve ratio. This parameter

value must be equal to or greater than the Mid-Point Frequency (Pr.1-03).

1 - 02 Maximum Output Voltage (Vmax) Unit: 0.1

Settings 230V series 0.1 to 255.0V Factory Setting: 220.0

 This parameter determines the Maximum Output Voltage of the AC motor 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. This parameter value must be equal to or greater than the

Mid-Point Voltage (Pr.1-04).

1 - 03 Mid-Point Frequency (Fmid) Unit: 0.01

Settings 0.10 to 400.0Hz Factory Setting: 0.50

 This parameter sets the Mid-Point Frequency of the V/f curve. With this setting, the V/f ratio

between Minimum Frequency and Mid-Point frequency can be determined. This parameter

must be equal to or greater than Minimum Output Frequency (Pr.1-05) and equal to or less

than Maximum Voltage Frequency (Pr.1-01).

1 - 04 Mid-Point Voltage (Vmid) Unit: 0.1

Settings 230V series 0.1 to 255.0V Factory Setting: 1.7

This 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. This parameter must be equal to

or greater than Minimum Output Voltage (Pr.1-06) and equal to or less than Maximum Output Voltage

(Pr.1-02).

Delta VFD-M-D series User Manual

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