N700 Operating Instructions and Parts Manual
7. Explanation of A-Group
66
Edge operation
: Give priority to A085 DC braking action time, operate DC braking
according to A085 set time. After turning operating command (FW) OFF,
when output frequency reaches the set value of A082, DC braking is run
during the setting time of A085. Even if operation command is turned ON
during the setting time of A085, DC braking is run. (Example 5.1),
(Example 6.1)
Level operation
: Give priority to operating command, ignore DC braking time A085 and
move to normal operation. When operation command is turned ON during
DC braking, set time of A085 is ignored and normal operation is restored.
(Example 5.2), (Example 6.2)
(1) Edge operation (A086=0)
(2) Level operation (A086=1)
Example
4.1
When
starting
Example
4.2
When
starting
FW
A088
DC braking
Output
frequency
Example
5.1
When
stopping
Example
5.2
When
stopping
Example
6.1
When
stopping
Example
6.2
When
stopping
FW
A085
A082
Output
frequency
Fig. 7- 11 Internal DC braking curve
7.12
Acceleration and deceleration reference setting (A089)
It is possible to set the standard of acceleration and deceleration in A089.
Code Function name Initial value
Unit
Setting range
Explanation
0
Maximum frequency (Ex.1)
Acceleration and deceleration time
is time to maximum frequency
A089
Accel/decel
time reference
setting
0 -
1
Setting frequency (Ex.2)
Acceleration and deceleration time
is time to order frequency
Table 7- 12 Acceleration and deceleration reference setting
