8 - 31
8 Applied Settings
High-function General-purpose Inverter RX2 Series User’s Manual
8-1
P
ID Con
trol
8
8-1
-5 PID2/PID
3/PID4 Contr
ol
When a response is not stabilized in PID operation, adjust the control in accordance with the following
tables.
Adjust respective PID gains for each PID2/PID3/PID4.
Precautions for Correct Use
If acceleration/deceleration time is set too long, following of output frequency will be delayed
and control may not be successful.
In this case, set the acceleration/deceleration time short.
Gain correspondence table
Adjust PID2/PID3/PID4 Control
Phenomenon
Examples of measures
Output response is slow and feedback value does not
change swiftly even if PID target value was changed.
Increase PID proportional gain according to the corre-
spondence table [1].
• Feedback value changes swiftly and is not stabilized.
• Overshooting or hunting occurs.
Decrease PID proportional gain according to the corre-
spondence table [1].
• Feedback value vibrates mildly.
• It takes time for operation to be stabilized.
Increase PID integral gain according to the correspon-
dence table [2].
PID target value and feedback value do not match eas-
ily.
Decrease PID integral gain according to the correspon-
dence table [2].
• Response is slow even if proportional gain was
increased.
• Small hunting occurs.
Increase PID differential gain according to the corre-
spondence table [3].
Response due to disturbance is large and it takes time
until stabilization.
Decrease PID differential gain according to the corre-
spondence table [3].
[1] Proportional gain
[2] Integral gain
[3] Differential gain
PID2
[AJ-13]
[AJ-14]
[AJ-15]
PID3
[AJ-33]
[AJ-34]
[AJ-35]
PID4
[AJ-53]
[AJ-54]
[AJ-55]
Summary of Contents for RX - 2
Page 1: ...High function General purpose Inverter RX2 Series User s Manual I620 E1 01 3G3RX2...
Page 54: ...1 Overview 1 22 High function General purpose Inverter RX2 Series User s Manual...
Page 136: ...2 Design 2 82 High function General purpose Inverter RX2 Series User s Manual...
Page 592: ...8 Applied Settings 8 192 High function General purpose Inverter RX2 Series User s Manual...
Page 754: ...11 Options 11 56 High function General purpose Inverter RX2 Series User s Manual...
Page 794: ...12 Troubleshooting 12 40 High function General purpose Inverter RX2 Series User s Manual...
Page 919: ......
