Hitachi SJ Series User Manual page 268

Chapter 12 Chapter 12 Chapter 12
PID1 changeable range limitation PID1 changeable range limitation PID1 changeable range limitation
A
• PID output is restricted to a changeable range • PID output is restricted to a changeable range PID output is restricted to a changeable range PID output is restricted to a changeable range
based on the target value. based on the target value. based on the target value.
• When [AH- • -71] is 0.00, the function will be disabled. 71] is 0.00, the function will be disabled. 71] is 0.00, the function will be disabled. 71] is 0.00, the function will be disabled.
PID output (%) PID output (%)
PID target PID target
value value
Parameter
■ ■
Item
PID changeable range PID changeable range PID changeable range
PID1 reverse output PID1 reverse output
A
• • In normal PID control, the inverter does not output In normal PID control, the inverter does not output In normal PID control, the inverter does not output In normal PID control, the inverter does not output In normal PID control, the inverter does not output
a negative figure for frequency command and limits a negative figure for frequency command and limits a negative figure for frequency command and limits a negative figure for frequency command and limits a negative figure for frequency command and limits
at 0 Hz, when result of PID calculation was at 0 Hz, when result of PID calculation was at 0 Hz, when result of PID calculation was at 0 Hz, when result of PID calculation was
negative. If you select 02 (with reverse output) for negative. If you select 02 (with reverse output) for negative. If you select 02 (with reverse output) for negative. If you select 02 (with reverse output) for negative. If you select 02 (with reverse output) for
PID1 selection [AH-01], frequency command can PID1 selection [AH 01], frequency command can 01], frequency command can 01], frequency command can
be output in a reverse direction, when result of PID be output in a reverse direction, when result of PID be output in a reverse direction, when result of PID be output in a reverse direction, when result of PID be output in a reverse direction, when result of PID
calculation was negative. ion was negative. ion was negative.
PID1 I control integral reset function [PIDC] PID1 I control integral reset function [PIDC] PID1 I control integral reset function [PIDC] PID1 I control integral reset function [PIDC]
A
• • This is a function to clear the integral figure of PID This is a function to clear the integral figure of PID This is a function to clear the integral figure of PID This is a function to clear the integral figure of PID This is a function to clear the integral figure of PID
operation.
• In the case of turning ON the [PIDC] terminal, do so • In the case of turning ON the [PIDC] terminal, do so In the case of turning ON the [PIDC] terminal, do so In the case of turning ON the [PIDC] terminal, do so In the case of turning ON the [PIDC] terminal, do so
when PID is not in operation. when PID is not in operation. when PID is not in operation.
PID1 disable function [PID] PID1 disable function [PID] PID1 disable function [PID]
A
• Turning ON the terminal temporarily disables PID • Turning ON the terminal temporarily disables PID Turning ON the terminal temporarily disables PID Turning ON the terminal temporarily disables PID Turning ON the terminal temporarily disables PID
operation and performs output according to operation and performs output according to operation and performs output according to operation and performs output according to
frequency command. frequency command.
• • The input value value as PID command will be adopted as PID command will be adopted as PID command will be adopted as PID command will be adopted
for frequency command. for frequency command. for frequency command.
! !
• In the case of using In the case of using In the case of using this function, set PID
changeable range [AH-71]. Restriction will be made changeable range [AH changeable range [AH
in a range of PID target value ± [AH in a range of PID target value ± [AH in a range of PID target value ± [AH in a range of PID target value ± [AH-71] with the
maximum speed as 100%. maximum speed as 100%. maximum speed as 100%. maximum speed as 100%.
PID output range PID output range
PID changeable range PID changeable range PID changeable range
[AH-71] 71]
PID changeable range PID changeable range PID changeable range
[AH-71] 71]
Terminal
Data Data
name
[AH-71] 0.00~100.00(%) 100.00(%)
! !
• When [AH When [AH-01] is set to 02 (with reverse output), the
PID changeable range limit function PID changeable range limit function PID changeable range limit function PID changeable range limit function [AH
extended to the negative direction. extended to the negative direction. extended to the negative direction. extended to the negative direction.
! !
• Turning ON the [PIDC] terminal during PID Turning ON the [PIDC] terminal during PID Turning ON the [PIDC] terminal during PID Turning ON the [PIDC] terminal during PID Turning ON the [PIDC] terminal during PID
operation clears the integral value added to the PID operation clears the integral value added to the PID operation clears the integral value added to the PID operation clears the integral value added to the PID operation clears the integral value added to the PID operation clears the integral value added to the PID
output command and changes the PID output output command and changes the PID output output command and changes the PID output output command and changes the PID output output command and changes the PID output
command value abruptly, resulting in an command value abruptly, resulting in an command value abruptly, resulting in an command value abruptly, resulting in an command value abruptly, resulting in an
over-current error. over
12 12-10-13 13
this function, set PID this function, set PID
71]. Restriction will be made 71]. Restriction will be made 71]. Restriction will be made
Time (s)
Description Description
Changeable range based on the Changeable range based on the Changeable range based on the
target value
01] is set to 02 (with reverse output), the 01] is set to 02 (with reverse output), the 01] is set to 02 (with reverse output), the 01] is set to 02 (with reverse output), the
error.
Inverter Functions Inverter Functions Inverter Functions
71] with the
[AH-71] will be 71] will be