Delta VFD-H User Manual

21
 Ramp The AC drive output frequency decelerates in the time specified by Pr.11
or Pr.13, down to the frequency specified by Pr.08, and then the drive output
turns off.
 Coast The AC drive is turned off immediately while the motor free runs until it
comes to a complete stop.
Stop command
Ramp
Frequency command
sec
Speed
Hz
Stop command
Coast
Frequency command
sec
Speed(Free running to stop)
Hz
?
Setting value
V / F Data Setting
Pr.09Pr.03 Pr.04 Pr.05 Pr.06 Pr.07 Pr.08
V / F Curve
Parameter # 03
Parameter Name
Maximum output frequency
Factory Setting
d060.0 Hz
Units
0.1 Hz
Parameter value
d050.0 - d400.0 Hz
 This parameter determines the AC drive’s maximum output frequency. All the AC
drive analog inputs (0 - 10V, 4 - 20mA) are scaled to correspond to the output
frequency range. (See graph on Page 24)
Parameter # 04
Parameter Name
Maximum voltage frequency (Base frequency)
Factory Setting
d060.0 Hz
Units
0.1 Hz
Parameter value
d010.0 -d400.0 Hz
 This value should be set according to rated frequency of the motor as indicated on
the motor nameplate (See graph on Page 24). Maximum voltage frequency
determines the volts per hertz ratio. For example, if the drive is rated for 460 VAC
output and the maximum voltage frequency is set to 60Hz, the drive will maintain a
constant ratio of 7.66 v/Hz.

Delta VFD-H Specifications

General

Brand	Delta
Model	VFD-H
Category	DC Drives
Language	English