Справочник Пользователя для Mitsubishi Electronics FR-A720-0.4k to 90k

⋅ Pr. 128 = "10, 11" (Deviation value signal input)

*

Set  0  in  Pr. 868 Terminal 1 function assignment. PID control is invalid when Pr. 868

 ≠ 0.

⋅ Pr. 128 = "20, 21" (Measured value input)

*1 Note that terminal 1 input is added to the set point of terminal 2 input. 
*2 Set 0 in Pr. 858 Terminal 4 function assignment. PID control is invalid when Pr. 858

 ≠ 0

9999

0.01 to 
10.00s

For deviation lamp input, time (Td) required for providing only 
the manipulated variable for the proportional (P) action. As the 
differential time increases, greater response is made to a 
deviation change.

9999

No differential control

1s

 0 to 3600s

The inverter stops operation if the output frequency after PID 
operation remains at less than the Pr. 576 setting for longer 
than the time set in Pr. 575.

9999

Without output interruption function

0Hz

 0 to 400Hz

Set the frequency at which the output interruption processing 
is performed.

1000% 900 to 1100%

Set the level (Pr. 577 minus 1000%) at which the PID output 
interruption function is canceled.

*1

Pr. 129, Pr. 130, Pr. 133 and Pr. 134 can be set during operation. They can also be set independently of the operation mode.

+-

M

Deviation signal

Feedback signal (measured value)

Ti   S 

1

1+

+Td   S

Kp

PID operation

To outside

Set point

Inverter circuit                 

Motor

Terminal 1

0 to    10VDC

(0 to     5V)

Kp: Proportionality constant   Ti: Integral time   S: Operator   Td: Differential time

Manipulated 
variable

*

+-

M

Ti

S

Kp 1+             +Td    S

1

PID operation

Pr. 133 or 
terminal 2

Set point

Inverter circuit

Motor

Feedback signal (measured value)

Terminal 4

Kp: Proportionality constant   Ti: Integral time   S: Operator   Td: Differential time

Manipulated 
variable

0 to 5VDC
(0 to 10V, 4 to 20mA)

4 to 20mADC (0 to 5V, 0 to 10V)

*1

*2