Multi-Pump (Single Drive) Application - Vacon 100 flow Applications Manual

VACON · 30
Table 7: M1.33 PID control
Index Parameter
1.33.11 SP1 Sleep Delay
1.33.12 SP1 Wake Up Level
1.33.12 Preset Frequency 1
1.4.3

MULTI-PUMP (SINGLE DRIVE) APPLICATION

You can use Multi-pump (single drive) application in applications, where 1 drive controls a
system that has the maximum of 8 parallel motors, for example, pumps, fans or
compressors. By default, Multi-pump (single drive) application is configured for 3 parallel
motors.
The drive is connected to 1 of the motors, which becomes the regulating motor. The internal
PID controller of the drive controls the speed of the regulating motor and gives control
signals by relay outputs to start or stop the auxiliary motors. External contactors (switch) set
the auxiliary motors to the mains.
You can control a process variable, the pressure for example, by the control of the speed of
the regulating motor and by the number of motors that operate.
See the descriptions of the parameters in 10 Parameter descriptions.
1
Min Max Unit
0 3000
Varies Varies Varies
P1.3 P1.4 Hz
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Default ID
The minimum quantity
of time that the fre-
quency stays below the
s 0 1017
sleep level before the
drive stops.
0 = Not used
The wake-up value of
the PID feedback
supervision. Wake-up
Varies 1018
Level 1 uses the selec-
ted process units.
0 = Not used
The preset frequency
10.0 105 that the the digital
input DI5 selects.
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