Danfoss VLT HVAC Basic Drive FC 101 Información técnica descargar pdf (Pagina 28)

1-52 Min Speed Normal Magnetising [Hz]

Range: Function:

0.0 Hz* [0.0 - 10.0

Hz]

Set the required frequency for normal

magnetising current.

Use this parameter along with 1-50 Motor

Magnetisation at Zero Speed. See drawing

for 1-50 Motor Magnetisation at Zero

Speed.

1-55 U/f Characteristic - U

Range: Function:

Size related* [0.0 - 999.0 V] Enter voltage at each frequency

point to manually form a U/f charac-

teristic matching motor. Frequency

points are defined in 1-56 U/f Charac-

teristic - F .

1-56 U/f Characteristic - F

Range: Function:

Size

related*

[0.0 -

400.0

Hz]

Enter frequency points to manually form a U/f

characteristic matching motor. Voltage at each

point is defined in 1-55 U/f Characteristic - U.

Make a U/f characteristic based on 6 definable

voltages and frequencies, see below figure.

Simplify U/f characteristics by merging 2 or

more points (voltages and frequencies), respec-

tively, are set equal.

Motor Voltage

Par 1-55 [x]

Output Frequency

Par 1-56 [x]

1-55[5]

1-55[4]

1-55[3]

1-55[2]

1-55[1]

1-55[0]

1-56

[0]

1-56

[1]

1-56

[2]

1-56

[3]

1-56

[4]

1-56

[5]

130BA166.10

3.2.6 1-6* Load Depend. Setting

1-62 Slip Compensation

Range: Function:

0 %* [-400 - 399

Enter the % value for slip compensation to

compensate for tolerances in the value of n

M,N

Slip compensation is calculated automatically,

i.e. on the basis of the rated motor speed

M,N

1-63 Slip Compensation Time Constant

Range: Function:

0.1 s* [0.05 - 5.0 s] Enter the slip compensation reaction speed.

A high value results in slow reaction, and a

low value results in quick reaction. If low-

frequency resonance problems arise, use a

longer time setting.

1-64 Resonance Dampening

Range: Function:

100.0 %* [0.0 - 500.0

Enter the resonance dampening value. Set

1-64 Resonance Dampening and

1-65 Resonance Dampening Time Constant

to help eliminate high-frequency

resonance problems. To reduce resonance

oscillation, increase the value of

1-64 Resonance Dampening.

1-65 Resonance Dampening Time Constant

Range: Function:

0.0050 %* [0.0050 - 0.05

Set 1-64 Resonance Dampening and

1-65 Resonance Dampening Time

Constant to help eliminate high-

frequency resonance problems. Enter

the time constant that provides the

best dampening.

3.2.7 1-7* Start Adjustments

1-71 Start Delay

Range: Function:

0.0 s* [0.0 - 10.0

This parameter enables a delay of the starting

time. The frequency converter begins with the

start function selected in 1-72 Start Function.

Set the start delay time until acceleration is to

begin.

1-72 Start Function

Option: Function:

[0] DC Hold/delay

time

Motor is energized with 2-00 DC Hold/

Motor Preheat Current during start delay

time.

[2] * Coast/delay time Inverter is coasted during start delay time

(inverter off).

1-73 Flying Start

Option: Function:

Select Enable [1] to enable the frequency converter

to catch a motor spinning due to mains drop-out.

Select Disable [0] if this function is not required.

When par. 1-73 is enabled par. 1-71 and 1-72 have

no function. Par 1-73 is active in VVC+ mode only.

[0] * Disabled

[1] Enabled

Parameters VLT HVAC Basic Drive Programming Guide

MG.18.B1.02 - VLT

is a registered Danfoss trademark 27

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