N700 Operating Instructions and Parts Manual
7. Explanation of A-Group
65
DB terminal paying attention to the damage and heat of the motor.
⑥
After level action or edge action are selected with A086, set each setting in accordance
with the system.
(a) Edge operation (A086=0)
(b) Level operation (A086=1)
Example
1.1
Example
1.2
Example
2.1
Example
2.2
Example
3.1
Example
3.2
Fig. 7- 10 External DC braking curve
Note)
If On switching time of DB terminal is longer than DC braking time (A085), DC braking
keep up for On time if DB terminal.
(2) Internal DC braking
①
When the inverter starts and stops, it is possible to operate DC braking without terminal
operation.
②
When using internal DC braking, the DC braking selection A081 should be set 01.
③
Set the starting frequency of the DC braking with A082.
④
If DC braking late time A083 is set and the dc braking frequency is reached, the operating
command (FW) is switched OFF. The inverter cuts the output and for the set time of A083,
free running of the motor will occur. After finishing the set time in A083, DC braking is
started.
⑤
Starting DC braking power is set with A087, DC braking time at starting is set with A088.
⑥
To the braking power setting except starting time, set with A084.
⑦
The ON/OFF change selection for the operation command of Edge/Level operation when
using inside DC braking is different.
