YASKAWA Varispeed L7 Instruction Manual page 145

Short Floor Operation
Related parameters
Parameter
No.
S3-01
Princple
The short floor operation is activated when the leveling signal is set before the nominal speed was reached.
The inverter calculates the distance for deceleration from nominal speed to the levelings speed, which is equal
to the area S in the figure below..
There are two ways:
If the leveling speed is set when 40% of the nominal speed was reached already, the inverter keeps the
•
reached speed until the distance equal to area S is reached. After that it decelerates to leveling speed.
If the leveling signal is set before 40% of the nominal speed was reached, the inverter accelerates to 40%
•
of the nominal speed and keeps it until the distance is equal to area S is reached. After that it decelerates to
leveling speed.
-16
5
Name
Short floor operation
Speed
Nominal speed
S
Nominal Speed x 0.4
Leveling speed
0
Speed
40% Nominal speed
0
http://nicontrols.com
Change
Factory
during
Setting
Operation
0 No
Leveling speed
t
S
Control Methods
Open Closed
V/f Loop Loop
Vector Vector
A A A
t