8 Applied Settings
8 - 18
High-function General-purpose Inverter RX2 Series User’s Manual
Turning ON the terminal temporarily disables PID operation and performs output according to fre-
quency command.
The figure input as PID command will be adopted for frequency command.
When a response is not stabilized in PID function, adjust the control in accordance with the following
tables.
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.
PID gain 1 and 2 can be switched by switching the input terminal function 055 [PRO].
In the case of using the [PRO] terminal, set 01 to PID1 gain switch method selection [AH-60].
PID1 Disable Function [PID]
Adjustment of PID1 Control
Phenomenon
Examples of measures
Output response is slow and feedback value does not
change swiftly even if PID target value was changed.
Increase PID1 proportional (P) gain 1 [AH-61].
• Feedback value changes swiftly and is not stabilized.
• Overshooting or hunting occurs.
Decrease PID1 proportional (P) gain 1 [AH-61].
• Feedback value vibrates mildly.
• t takes time for operation to be stabilized.
Decrease PID1 integral (I) gain 1 [AH-62].
PID target value and feedback value do not match eas-
ily.
Increase PID1 integral (I) gain 1 [AH-62].
• Response is slow even if proportional gain was
increased.
• Small hunting occurs.
Increase PID1 differential (D) gain 1 [AH-63].
Response due to disturbance is large and it takes time
until stabilization.
Decrease PID1 differential (D) gain 1 [AH-63].
Switching PID1 Gain
+
+
+
OFF
OFF
OFF
ON
ON
ON
[db-61]
[db-62]
[db-63]
P control
I control
D control
Proportional gain 1 [AH-61]
Proportional gain 2 [AH-64]
Integral gain 1 [AH-62]
Integral gain 2 [AH-65]
Differential gain 1 [AH-63]
Differential gain 2 [AH-66]
[PRO] terminal
PID deviation
Result of PID
calculation
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: ......
