Nastec MIDA 203, Руководство по установке, использованию и техническому обслуживанию

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Parameter Default Description
Ramp freq. min motor
t = XX [sec]
Time in which the motor reaches the minimum frequency from standstill (Min motor frequency) and
vice versa.
4
5
6
7
8
9
10
1
2
3
Sec.
Hz
1: Max motor frequency; 2: Frequency min control; 3: Min motor frequency; 4: PI control; 5: Ramp up
time; 6: Ramp freq. min motor ; 7: Ramp down; 8: Stop delay; 9: Control ramp; 10: Ramp freq. min
motor
PWM
f = XX [kHz ]
Inverter modulation frequency.
It is possible to choose between 2.5, 4, 6, 8, 10 kHz depending on the inverter model.
Higher values correspond to a more faithful reconstruction of the sine wave. When using very long
motor cables (>20 m), the appropriate output filters, available upon request, should be interposes
between the inverter and the motor and the correct value of the PWM parameter according to the
type of filter and the length of the cable should be set. This reduces the probability of voltage peaks at
the motor input while safeguarding the winding insulation.
Lower values reduce the heating of the inverter.
V/f linear quadratic
XXX %
80% This parameter allows changing the V/f characteristic with which the device supplies the motor. The
linear characteristic corresponds to a constant torque characteristic with varying revolutions. The
quadratic characteristic corresponds to a variable torque characteristic and is generally suitable for
use with centrifugal pumps. The torque characteristic must be chosen ensuring smooth operation,
reduced energy consumption and lower heating and motor noise. With single-phase motors, we
recommend setting linear V/f (0%).
Rotation sense
---> / <---
---> Running direction of the motor. Should the motor run in the wrong direction, it is possible to reverse
the running direction without having to change the phase sequence in the connection.
CAUTION
If there is more than one pump in a COMBO unit, it is best to use the same phase
sequence when connecting the motors and to set the same running direction.
Motor tuning
ENT to access
If the device is "FOC-ready", motor calibration must be carried out before commissioning.
WARNING
Carefully read the chapter dedicated to the FOC motor control.
Motor resistance
Rs=XXX.XX [Ohm]
Manual setting of the stator resistance.
Motor inductance
Ls=XXX.XX [mH]
Manual setting of the stator inductance.
FOC dynamics
XXX
200 Setting of the control dynamic of the FOC algorithm.
FOC speed
XXX
5 Setting of the control speed of the FOC algorithm.
Autorestart
ON/OFF
OFF By selecting ON, when the mains power is restored after a power failure, the device will return to the
same state it was in before the power failure: this means that if the pump was working, it will start
working again
Change password2
Press ENT
By pressing the ENT key it is possible to change the advanced level password (level 2) (default 002).
9.9. IN / OUT parameters
Parameter Default Description
Unit
XXXXX
bar Units of measurement [bar,%, ft, in, cm, m, K, F, C, gpm, l / min, m3 / h, atm, psi].
MIDA
37