Advanced Pid Function (Pump Function) (Pr. 554, Pr. 575 To Pr. 591) - Mitsubishi Electric FR-F740-00023 Instruction Manual

Special operation and frequency control

4.20.3 Advanced PID function (pump function) (Pr. 554, Pr. 575 to Pr. 591)

PID control function can adjust the volume of water, etc. by controlling a pump. Multiple motors (4 motors
maximum) can be controlled by switching between the inverter-driven operation and commercial power-
driven operation. Use Pr. 579 Motor connection function selection to select switchover operation of the motor. Up
to three auxiliary motors can be connected.
Parameter
Number
PID signal operation selection
554
Output interruption detection
575
time
Output interruption detection
576
level
577 Output interruption cancel level
578 Auxiliary motor operation selection
Motor connection function
579
selection
580 MC switching interlock time
581 Start waiting time
Auxiliary motor connection-time
582
deceleration time
Auxiliary motor disconnection-
583
time acceleration time
584 Auxiliary motor 1 starting frequency
585 Auxiliary motor 2 starting frequency
586 Auxiliary motor 3 starting frequency
587 Auxiliary motor 1 stopping frequency
588 Auxiliary motor 2 stopping frequency
589 Auxiliary motor 3 stopping frequency
590 Auxiliary motor start detection time
591 Auxiliary motor stop detection time
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 173)
*1 Depends on the Pr. 21 Acceleration/deceleration time increments setting. The initial value for the setting range is "0 to 3600s" and the setting
increments is "0.1s".
236
Initial
Name
Value
1000%
60Hz
60Hz
60Hz
Setting
Range
Select the operation to be performed at
the detection of upper, lower, and
0 to 3,
0 deviation limit for the measured value
10 to 13
input. The operation for PID output
suspension function can be selected.
The inverter stops operation if the output
frequency after PID operation remains at
0 to 3600s
less than the Pr. 576 setting for longer than
1s
the time set in Pr. 575.
9999 Without output interruption function
Set the frequency at which the output
0Hz 0 to 400Hz
interruption processing is performed.
Set the level (Pr. 577 minus 1000%) to
900 to 1100% release the PID output interruption
function.
0 No auxiliary motor operation
0
Set the number of auxiliary motors to be
1 to 3
run
0 Basic system
1 Alternative system
0
2 Direct system
3 Alternative-direct system
You can set the time until MC switchover
1s 0 to 100s
interlock time when Pr. 579 = "2, 3" is set.
You can set the time from when the MC is
switched until it starts when Pr. 579 = "2,
1s 0 to 100s
3". Set this time a little longer than the MC
switching time.
You can set the deceleration time for
decreasing the output frequency of the
0 to 3600/360s
inverter if a motor connection occurs
*1
1s
under advanced PID control.
The output frequency is not forcibly
9999
changed.
You can set the acceleration time for
0 to 3600/360s increasing the output frequency of the
inverter if a motor disconnection occurs
*1
1s
under advanced PID control.
The output frequency is not forcibly
9999
changed.
0 to 400Hz
Set the frequency to connect an auxiliary
0 to 400Hz
motor.
0 to 400Hz
0Hz 0 to 400Hz
Set the frequency to open an auxiliary
0Hz 0 to 400Hz
motor.
0Hz 0 to 400Hz
You can set the delay time until the
5s 0 to 3600s
auxiliary motor is started.
You can set the delay time until the
5s 0 to 3600s
auxiliary motor is stopped.
Description