E6581301

F-30

6
■ Starting procedure
At the run command, the inverter makes the motor produce the torque specified with parameter H. As soon
as a torque output command is issued, a brake release request signa l is put out through the brake output termin al.
Upon expiration of the brake release time set with H, the motor starts to accelerate.
■ Stopping procedure
At the stop command, the operation frequency is decreased to the cre ep frequency set with parameter H,
and put out the braking request after the creep time 1 set with H. And then, the creep frequency is
maintained for the creep time set with H. While the creep frequency is maintained, the brake release signal is
put out through the braking signal output terminal to apply the bra ke.
! !!
Output frequency
[Hz]
Torque!
H
Braking signal
RUN command
Time [s]
Torque control Speed control
H
H
Braking request
Brake release request
Issue of torque command
Creepinjg frequency
!
H
Starting frequency
!
H
Braking operation

H
Ex.) When using the OUT1 terminal as the brake signal output termin al
Title Function Adjustment range

Example of settin g

H Output terminal function selection 1 (OUT1) ~ 
■ Learning function [H]
Using this function, rough settings can be made automatically and al so parameters H, Hand H
can be set automatically.
[Learning operation]
Set parameter H to and enter an operation command to start learning. (The frequency and “VWP” are
displayed alternately.)
Parameter H (torque) is set, the brake release timing is calcul ated, and parameter H (release time) is
set based on the calculation result. H is set automatically acco rding to the motor constant calculated. At the
stop of operation, H (creep time) are set.
Note1: Learning should be perfo rmed under light-load conditions.
Note2: For the braking functions, the pre-excitation time is automatically determined by the inverter from
motor-related constants.
When the VFAS1-2037PL is used in combination with a Toshiba 4P-3.7kW-60Hz-200V standard motor, the
preliminary excitation time is approximately 0.1 to 0.2 seconds.
Depending on the motor used, the preliminary excitation time may be prol onged.
Note3: When using braking functions, set parameter CW (automatic torque boos t) to (voltage vector control +
auto-tuning 1) or set motor-related parameters H to H.
Note 4: If a counterweight is provided, a learning error may occur. If so, make an adjustment manually. !
Note 5: Brake learning (H=) should be carried out for normal rota tion if H is set to (forward
winding), or for reverse rotation if H is set to (reverse winding ).