Grundfos RSI - Page 36

5.3.5 Multi-purpose application
You can use the Multi-purpose application for different
processes (for example conveyors) where a wide
range of motor control functions is necessary.
It is possible to control the drive from the keypad,
Fieldbus or I/O terminal. When you use I/O terminal
control, the start/stop commands are given through
DI1 and DI2, and the frequency reference from AI1 or
AI2.
There are 2 acceleration/deceleration ramps
available. The selection between Ramp1 and Ramp2
is made by DI6.
It is possible to configure all the drive outputs freely in
all the applications. There are 1 analogue output
(Output Frequency) and 3 relay outputs (Run, Fault,
Ready) available on the basic I/O board.
M1.35 Multi-purpose
Code Parameter Min Max Unit Default ID Description
P1.35.1 Control mode 0 1 0 600
0 = U/f Freq ctrl open loop
1 = Speed control open loop
P1.35.2 Auto TorqueBoost 0 1 0 109
Automatic torque boost can be used in
application where starting torque due to
starting friction is high.
0 = Disabled
1 = Enabled
P1.35.3
Start Acceleration
Time
0.1 3000.0 s 2.0 502 Start Acceleration Time
P1.35.5 Preset Freq 1 P1.3 P1.4 Hz 10.0 105 Preset Freq 1
P1.35.6 U/f ratio 0 2 0 108
Type of U/f curve between zero
frequency and the field weakening point.
0 = Linear
1 = Squared
2 = Programmable
P1.35.7 Field WeakngPnt 8.00 P3.3.1.2 Hz Varies 602
The field weakening point is the output
frequency at which the output voltage
reaches the field weakening point voltage
P1.35.8 Voltage at FWP 10.00 200.00 % 100.00 603
Voltage at field weakening point in % of
motor nominal voltage
P1.35.9 U/f Mid Freq 0.00 P3.1.4.2 Hz Varies 604
Provided that the programmable U/f
curve has been selected (par. P3.1.4.1),
this parameter defines the middle point
frequency of the curve.
P1.35.10 U/f Mid Voltg 0.0 100.0 % 100.0 605
Provided that the programmable U/f
curve has been selected (par. P3.1.4.1),
this parameter defines the middle point
voltage of the curve.
P1.35.11 Zero Freq Voltg 0.00 40.00 % Varies 606
This parameter defines the zero
frequency voltage of the U/f curve. The
default value varies according to unit
size.
P1.35.12 StartMagnCurrent 0.00 Varies A Varies 517
Defines the DC current fed into motor at
start. Disabled if set to 0.
P1.35.13 StartMagnTime 0,00 600,00 s 0,00 516
This parameter defines the time for how
long DC current is fed to motor before
acceleration starts.
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