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5. PARAMETERS
5.11 (A) Application parameters
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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.
• Refer to page 396 to set PID control.
• When using the sleep function, refer to page 408 to set the function.
Pr. Name Initial value Setting
range
Description
578
A400
Auxiliary motor operation
selection
0 0 No auxiliary motor operation
1 to 3 Set the number of auxiliary motors to be run.
579
A401
Motor connection function
selection
0 0 Basic system
1 Alternative system
2 Direct system
3 Alternative direct system
580
A402
MC switchcover interlock
time (multi-pump)
1 s 0 to 100 s Set the MC switchover interlock time.
581
A403
Start waiting time (multi-
pump)
1 s 0 to 100 s Set the time from when the MC is switched until it starts. Set
this time a little longer than the MC switching time.
582
A404
Auxiliary motor connection-
time deceleration time
1 s 0 to 3600 s Used to decrease the output frequency of the inverter when a
motor connection occurs. Set the deceleration time for
decreasing the output frequency.
9999 The output frequency is not decreased when a motor
connection occurs.
583
A405
Auxiliary motor
disconnection-time
acceleration time
1 s 0 to 3600 s Used to increase the output frequency of the inverter when a
motor connection occurs. Set the acceleration time for
increasing the output frequency.
9999 The output frequency is not increased when a motor
connection occurs.
584
A406
Auxiliary motor 1 starting
frequency
60 Hz 0 to 590 Hz Set the frequency to start the auxiliary motor.
585
A407
Auxiliary motor 2 starting
frequency
60 Hz 0 to 590 Hz
586
A408
Auxiliary motor 3 starting
frequency
60 Hz 0 to 590 Hz
587
A409
Auxiliary motor 1 stopping
frequency
0 Hz 0 to 590 Hz Set the frequency to stop the auxiliary motor.
588
A410
Auxiliary motor 2 stopping
frequency
0 Hz 0 to 590 Hz
589
A411
Auxiliary motor 3 stopping
frequency
0 Hz 0 to 590 Hz
590
A412
Auxiliary motor start
detection time
5 s 0 to 3600 s Set the delay time until the auxiliary motor is started.
591
A413
Auxiliary motor stop
detection time
5 s 0 to 3600 s Set the delay time until the auxiliary motor is stopped.
1370
A442
Detection time for PID
limiting operation
0 s 0 to 900 s Set the time until the auxiliary motor is stopped when the PID
overpressure control function is used.
1376
A414
Auxiliary motor stopping
level
9999 0 to 100% Set the level for stopping the auxiliary motor by the PID
overpressure control function.
9999 The PID overpressure control function is disabled.
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