Mitsubishi Electric 700 Series, Instruction Manual

Page: 294 / 416

283
PID control
4
P
ARA
MET
E
RS
4.20.5 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
Name
Initial
Value Setting
Range
Description
554
PID signal operation selection 0
0 to 3,
10 to 13
Select the operation to be performed at
the detection of upper, lower, and
deviation limit for the measured value
input. The operation for PID output
suspension function can be selected.
575
Output interruption detection
time
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
576
Output interruption detection
level
0Hz 0 to 400Hz
Set the frequency at which the output
interruption processing is performed.
577 Output interruption cancel level 1000% 900 to 1100%
Set the level ( Pr. 577 minus 1000%) to
release the PID output interruption
function.
578 Auxiliary motor operation selection 0
0 No auxiliary motor operation
1 to 3
Set the number of auxiliary motors to be
run
579
Motor connection function
selection
0
0 Basic system
1 Alternative system
2 Direct system
3 Alternative-direct system
580 MC switching interlock time 1s 0 to 100s
You can set the time until MC switchover
interlock time when
Pr. 579 = "2, 3" is set.
581 Start waiting time 1s 0 to 100s
You can set the time from when the MC is
switched until it starts when
Pr. 579 = "2,
3". Set this time a little longer than the MC
switching time.
582
Auxiliary motor connection-time
deceleration time
1s
0 to 3600/360s
*1
You can set the deceleration time for
decreasing the output frequency of the
inverter if a motor connection occurs
under advanced PID control.
9999
The output frequency is not forcibly
changed.
583
Auxiliary motor disconnection-
time acceleration time
1s
0 to 3600/360s
*1
You can set the acceleration time for
increasing the output frequency of the
inverter if a motor disconnection occurs
under advanced PID control.
9999
The output frequency is not forcibly
changed.
584 Auxiliary motor 1 starting frequency 60Hz 0 to 400Hz
Set the frequency to connect an auxiliary
motor.
585 Auxiliary motor 2 starting frequency 60Hz 0 to 400Hz
586 Auxiliary motor 3 starting frequency 60Hz 0 to 400Hz
587 Auxiliary motor 1 stopping frequency 0Hz 0 to 400Hz
Set the frequency to open an auxiliary
motor.
588 Auxiliary motor 2 stopping frequency 0Hz 0 to 400Hz
589 Auxiliary motor 3 stopping frequency 0Hz 0 to 400Hz
590 Auxiliary motor start detection time 5s 0 to 3600s
You can set the delay time until the
auxiliary motor is started.
591 Auxiliary motor stop detection time 5s 0 to 3600s
You can set the delay time until the
auxiliary motor is stopped.
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 190)
....
Specifications differ according to the date assembled. Refer to page 400 to check the SERIAL number.
*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".