6
-176
Control-related Adjustments
The Varispeed G7 is designed to provide sufficient performance for elevating machines. However, if problems
related to controllability should occur, such as vibration or slipping, adjust the following constants in accor-
dance with the control method. Only constants that frequently require adjustment are listed in this table.
Table 6.4 Control-related Adjustments
Control
Method
Con-
stant
Number
Name Performance
Factory
Setting
Recom-
mended
Setting
Adjustment Method
Open-loop
vector 1 con-
trol (A1-02 =
2)
N2-01
Speed feed-
back detec-
tion control
(AFR) gain
• Increasing torque and
speed response
• Controlling hunting
and vibration in mid-
dle-range speeds (10
to 40 Hz)
1.00 0.50 to 2.00
• Torque or speed response
is insufficient: Reduce the
setting
• Hunting or vibration
occurs: Increase the set-
ting
C4-02
Torque com-
pensation
primary
delay time
constant
• Increasing torque and
speed response
• Controlling hunting
and vibration
20 ms 20 to 100 ms
• Torque or speed response
is insufficient: Reduce the
setting
• Hunting or vibration
occurs: Increase the set-
ting
C3-02
Slip compen-
sation pri-
mary delay
time
• Increasing speed
response
• Improving speed sta-
bility
200 ms
100 to
500 ms
• Speed response is slow:
Reduce the setting
• Speed is not stable:
Increase the setting
C3-01
Slip compen-
sation gain
Improving speed accu-
racy
1.0 0.5 to 1.5
• Speed is slow: Increase
the setting
• Speed is too fast: Reduce
the setting
C6-02
Carrier fre-
quency
selection
• Reducing motor mag-
netic noise
• Controlling hunting
and vibration at low
speeds (10 Hz or
lower)
*1
1 to F
• Motor magnetic noise is
high: Increase the setting
• Hunting or vibration
occurs at low speeds:
Reduce the setting
E1-08
Mid. output
frequency
voltage (VC)
• Improving torque and
speed response at low
speeds
• Controlling shock at
startup
11.0 V
*2
12.0 to
13.0 V
*2
• Torque or speed response
is insufficient: Increase
the setting
• Shock at startup is large:
Reduce the setting
E1-10
Min. output
frequency
voltage
(VMIN)
2.0 V
*2
2.0 to
3.0 V
*2
TOE-S616-60.1.book 176 ページ ２０１７年８月４日 金曜日 午後３時４１分
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