Sanken S06-4A005-B Instruction Manual page 84

frequency (F1112); DC braking quickly stops the motor which is working. The DC braking time and DC braking force are
determined according to F1113 and F1114.
● Free run stop
Turn OFF all drive signals of the switching device at the time when a stop signal is sent to put the motor in free run state.
F1112 DC braking start frequency
F1113 DC braking time
F1114 DC braking force
A function for setting DC braking start frequency and action time and braking force when braking.
Code No. Function Name
F1112 DC braking start frequency
F1113
DC braking time
F1114 DC braking force
● If F1111 = 2, the output frequency drops as the stop signal is input, DC braking starts at the time point where the value is below
the frequency set by F1112.
● When F1111=2, the starting frequency (F1103) is inactive during braking. When output frequency drops to the DC braking start
frequency (F1112), the DC braking starts.
● For DC braking action at starting means that the DC braking starts after the operation signal has met the starting conditions, and
then the motor will be started by starting frequency. In this case, the action time and braking force are the setting values of F1113
and F1114. See also F1102 for Dc braking action at starting.
● After the operation signal has been input, if the set frequency is below the operation start frequency or DC braking start
frequency, the following actions will be executed according to the magnitude relation between operation start frequency and DC
braking start frequency.
① ① Operation start frequency ≥ DC braking start frequency.
If the set frequency is lower than the DC braking start frequency, even if it is higher than DC braking start frequency, the
output frequency will be decreased to DC braking start frequency, and then DC braking starts.
② Operation start frequency ＜ DC braking start frequency.
· Even if the set frequency is lower than DC braking start frequency, as long as it is greater than the operation start frequency,
the operation will continue.
· When the output frequency is higher than DC braking start frequency, even if the set frequency is lower than the operation
start frequency, like in ①, the output frequency will be decreased to DC braking start frequency, and then DC braking starts.
· When the output frequency is lower than DC braking start frequency, if the set frequency is lower than the operation start
frequency, then DC braking will start immediately.
● During DC braking, if the【STOP】key is pressed again, the DC braking will be released.
● During DC braking in stopped state, if the operation signal is input, then the operation will be restarted in the normal operation
order.
Note 1: F1113 and F1114 are active only in V/f mode (F1001=1, 40). In speed control mode (F1001=2, 3, 10, 11), the setting of
F6005-F6008 is equivalent to this setting.
Note 2: During DC braking, the motor tends to be over-heated as there is no self-cooling effect caused by motor rotation.
Therefore, the DC braking force should be set to a smaller value, and it is recommended to set the value within the range
in which the motor does not overheat or to install a temperature limiting relay on the motor.
Note 3: If the increase in DC braking force is ineffective, the possible reason is that current limiting function is activated by
overcurrent caused by some reason.
Duty cycle of brake resistor
F1115
A function for setting utilization rate of a brake resistor. The value shall be set within the allowable utilization rate of the brake resistor.
Code No. Function Name
F1115
Duty cycle of brake resistor
Data Content
0.05～20Hz
0.1～10s
1～10
Data Content
No brake resistor
0：
2～25%ED
No discharge resistor protection
98 ：
discharge
※1）
- 83 -
Setting Resolution
0.01Hz
0.1s
1
Setting Resolution
1%ED
with
（
Factory Presets
0.5
2
5
Factory Presets
※2