47
Address
Parameter
Name & Function
Default Unit
Setting
Range RS232 RS485
S curve speed command acceleration and deceleration time
setting.
Sn208
Set Sn205=3 to enable this function.
In the period of Acc/Dec , drastic speed changing might cause
vibration of machine. S curve speed command acc/dec time
setting has the effect to smooth acc/dec curve.
Rule for the setting
：
：
：
：
s
a
t
t
>
2
，
，
，
，
s
d
t
t
>
2
1
msec
1
│
1000
C44H 0208H
S curve speed command acceleration time setting.
Sn209
Refer Sn208
200
msec
0
│
5000
C45H 0209H
S curve speed command deceleration time setting.
Sn210
Refer Sn208
200
msec
0
│
5000
C46H 020AH
Speed loop Gain 1
Sn211
Speed loop gain has a direct effect on the frequency response
bandwidth of the Speed-control loop.
Without causing vibration or noise Speed-loop-gain can be
increased to obtain a faster speed response.
If Cn025 (load Inertia ratio) is set correctly, the
speed-loop-bandwidth will equal to speed-loop-gain.
40
Hz
10
│
450
530H 020BH
Speed-loop Integral time 1
Sn212
Speed loop integral element can eliminate the steady speed error
and react to even slight speed variations.
Decreasing Integral time can improve system rigidity.
The formula below shows the relationship between Integral time
and Speed loop Gain.
ain
SpeedLoopG
t
TimeCons
ntegration
SpeedLoopI
×
×
≥
π
2
1
5
tan
100
x0.2
ms
1
│
500
531H 020CH
