Multi-Pump Function (Advanced Pid Function) - Mitsubishi Electric FR-F820-00046 Instruction Manual

Fr-f800 series
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NOTE
• The second PID pre-charge function is valid also when the first pre-charge function is set to invalid and the second pre-charge
function is set.
• When "10" (second function enabled only during constant-speed operation) is set to Pr.155, the second PID function is not
selected even if the RT signal turns ON.

5.11.10 Multi-pump function (Advanced PID function)

PID control function can adjust the volume of water, etc. by controlling pumps. When the motor output is insufficient, auxiliary
motors can be driven by the commercial power supply. Up to three auxiliary motors can be connected.
Pr.
578
Auxiliary motor operation
A400
selection
579
Motor connection function
A401
selection
580
MC switchover interlock time
A402
581
Start waiting time
A403
582
Auxiliary motor connection-time
A404
deceleration time
583
Auxiliary motor disconnection-
A405
time acceleration time
584
Auxiliary motor 1 starting
A406
frequency
585
Auxiliary motor 2 starting
A407
frequency
586
Auxiliary motor 3 starting
A408
frequency
587
Auxiliary motor 1 stopping
A409
frequency
588
Auxiliary motor 2 stopping
A410
frequency
589
Auxiliary motor 3 stopping
A411
frequency
590
Auxiliary motor start detection
A412
time
591
Auxiliary motor stop detection
A413
time
1370
Detection time for PID limiting
A442
operation
1376
Auxiliary motor stopping level
A414
• Refer to
• When using the sleep function, refer to
430
5. PARAMETERS
5.11 (A) Application parameters
Initial value
Name
FM
0
0
1 s
1 s
1 s
1 s
60 Hz
60 Hz
60 Hz
0 Hz
0 Hz
0 Hz
5 s
5 s
0 s
9999
page 401
to set PID control.
Setting range
CA
0
1 to 3
0
1
2
3
0 to 100 s
0 to 100 s
0 to 3600 s
9999
0 to 3600 s
9999
50 Hz
0 to 590 Hz
50 Hz
0 to 590 Hz
50 Hz
0 to 590 Hz
0 to 590 Hz
0 to 590 Hz
0 to 590 Hz
0 to 3600 s
0 to 3600 s
0 to 900 s
0 to 100%
9999
page 411
to set the function.
Description
No auxiliary motor operation
Set the number of auxiliary motors to be run.
Basic system
Alternative system
Direct system
Alternative direct system
Set the MC switchover interlock time.
Set the time from when the MC is switched until it
starts. Set this time a little longer than the MC
switching time.
Used to decrease the output frequency of the
inverter when a motor connection occurs. Set the
deceleration time for decreasing the output
frequency.
The output frequency is not decreased when a motor
connection occurs.
Used to increase the output frequency of the inverter
when a motor connection occurs. Set the
acceleration time for increasing the output
frequency.
The output frequency is not increased when a motor
connection occurs.
Set the frequency to start the auxiliary motor.
Set the frequency to stop the auxiliary motor.
Set the delay time until the auxiliary motor is started.
Set the delay time until the auxiliary motor is
stopped.
Set the time until the auxiliary motor is stopped when
the PID overpressure control function is used.
Set the level for stopping the auxiliary motor by the
PID overpressure control function.
The PID overpressure control function is disabled.

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