Control-Related Adjustments - YASKAWA CIMR-F7A Instruction Manual

Control-related Adjustments

The Varispeed F7 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.
Con-
Control
stant Name
Method
Number
Speed feed-
back detec-
N2-01
tion control
(AFR) gain
Torque com-
pensation
C4-02 primary
delay time
constant
Slip compen-
sation pri-
C3-02
mary delay
time
Open-loop
vector con-
trol
Slip compen-
(A1-02 = 2) C3-01
sation gain
Carrier fre-
C6-02 quency
selection
Mid. output
E1-08 frequency
voltage (VC)
Min. output
frequency
E1-10
voltage
(VMIN)
Table 6.4 Control-related Adjustments
Factory
Performance
Setting
• Increasing torque and
speed response
• Controlling hunting
1.00
and vibration in mid-
dle-range speeds (10
to 40 Hz)
• Increasing torque and
speed response
20 ms
• Controlling hunting
and vibration
• Increasing speed
response
200 ms
• Improving speed sta-
bility
• Improving speed
1.0
accuracy
• Reducing motor mag-
netic noise
• Controlling hunting
*1
and vibration at low
speeds (10 Hz or
lower)
11.0 V
• Improving torque and
speed response at low
speeds
• Controlling shock at
2.0 V
startup
Using Inverters for Elevating Machines
Recom-
mended Adjustment Method
Setting
• Torque or speed response
is insufficient: Reduce the
setting
0.50 to 2.00
• Hunting or vibration
occurs: Increase the set-
ting
• Torque or speed response
is insufficient: Reduce the
setting
20 to 100 ms
• Hunting or vibration
occurs: Increase the set-
ting
• Speed response is slow:
100 to Reduce the setting
500 ms • Speed is not stable:
Increase the setting
• Speed is slow: Increase
the setting
0.5 to 1.5
• Speed is too fast: Reduce
the setting
• Motor magnetic noise is
high: Increase the setting
1 to F • Hunting or vibration
occurs at low speeds:
Reduce the setting
12.0 to
*2
• Torque or speed response
*2
13.0 V
is insufficient: Increase
the setting
• Shock at startup is large:
2.0 to
*2
Reduce the setting
*2
3.0 V
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