Making The Motor Standstill With Pg Feedback Control - Toshiba TOSVERT VF-AS3 Instruction Manual

6. 8. 3
<F255: 0Hz command select at stop>
<F250: DC braking frequency>
<F252: DC braking time>
■ Function
4
This function works only for the speed control of PG feedback control. Use a way other than DC
braking to make the motor standstill.
4 When this function is set, the inverter outputs a 0 Hz command instead of applying DC braking when
stopping to make the motor standstill for the specified time.
6
■ Parameter setting
Title
F255
F250
9
F252
■ How to select a setting value
0: DC braking
This function works as the DC braking function described in [6. 8. 1].
1: 0 Hz command
This function works only for the speed control of PG feedback control.
The inverter outputs 0 Hz for the period set with <F252: DC braking time> when the frequency
reaches the setting value of <F250: DC braking frequency>.
It does not work when <F250: DC braking frequency> is set to "0.0".
With this function enabled, <F254: Motor shaft fixing control> cannot be used.
■ How to use
This function is used for PG feedback control (<Pt: V/f Pattern> = "10", "11").
You should set the terminals [S4] and [S5] or have any option for PG feedback.
The normal DC braking action (the same action set with <F255> = "0") is performed for non-PG
feedback control.
6. [Advanced] How to use parameters
Making the motor standstill with PG feedback
control
Parameter name
0Hz command select at
stop
DC braking frequency
DC braking time
F255 : 0Hz command at stop
0: Dc braking
1: 0Hz command
Adjustment range
0: DC braking
1: 0 Hz command
0.0 - FH
0.0 - 25.5
6-40
E6582062
STOP 0.0Hz
13:09
Unit Default setting
0
Hz 0.0
s 1.0