15
ⅰ
) Using multistep speed command
Time
Reference speed (final) (= Actual speed)
0
ON
FWD
ON
ON
Zero speed
command
High speed
command
Creep speed
command
Zero speed
command
Release
Brake
SS1
SS2
High speed
Creep speed
ON
SS4
0
t
1
t
2
t
3
L66
t
1
: The time when real brake open.
t
2
: The time when unbalanced load compensation control is finished.
t
3
: The time when speed command switch "High speed command" from "Zero speed command".
- Please adjust "Brake open timing", "Speed command timing" and L66 to become t
1
< t
2
< t
3
.
If shock is generated at L65 = 0 and it is not generated at L65 = 1 at the time of started inverter, unbalanced load
compensation works correctly.
ⅱ
) Using analog speed command
Time
0
ON
FWD
Release
Brake
Reference speed
(pre-ramp)
(= Lift controller output)
F24
F23
Time
0
Reference speed
(final)
(= Actual speed)
F23
H65
0
t
1
t
2
t
4
t
3
L66
t
1
: The time when real brake open.
t
2
: The time when unbalanced load compensation control is finished.
t
3
: The time when reference speed (pre-ramp) arrives at F23.
t
4
: The time when reference speed (final) arrives at F23.
- Please adjust “Brake open timing”, “Speed command timing” and F24 to become t
1
< t
2
< t
3
.
- Please set a value of L66 bigger than value of F24.
- Please adjust “Speed command timing” and H65 to become t
4
< t
3
.
If shock is generated at L65=0 and it is not generated at L65=1 at the time of started inverter, unbalanced load
compensation works correctly.