Delta VFD-ED Series, User Manual

Page: 228 / 389

Ch12 Descriptions of Parameter Settings | VFD-ED
12-17
Case 3. Deceleration point (instead of high speed) is given before allowed speed and high speed
time is zero
When high speed is higher than allowed speed, because there is no duration, the drive levels the speed
instead of executing S2, adds high speed duration accordingly to reduce the leveling time, which is the
same as Case 2 when the high speed duration is reduced to zero or below zero.
Automatic Emergency Deceleration Level
Control Mode VFPG FOCPG FOCPM Default: 60.00
Settings 5.00–400.00 Hz
 When MI is set to 56, the system monitors the current speed. If the speed is higher than Pr.01-39, the drive
decelerates to Pr.01-29 speed according to Pr.01-40 deceleration time.

Deceleration Time for Emergency Deceleration
Control Mode VFPG FOCPG FOCPM Default: 2.00
Settings 0.00–600.00 sec.
 When MI=55 function is triggered, the drive decelerates to Pr.01-29 speed according to Pr.01-40
deceleration time, as shown in the figure below.