Vacon 500X, Руководство пользователя

Страница: 77 / 124

24-hour s358 (0)40 837 1150 • Email: vacon@vacon.com
vacon 500x parameters vacon
z
76
7
504 Skip Freq Band Default: 0.2 Hz
Range: 0.2 to 20.0 Hz
Level 2
To reduce mechanical resonances in a drive system, the drive may be configured to “skip” certain
frequencies. Once configured, the drive will accelerate or decelerate through the prohibited frequency
band without settling on any frequency in the band.
The Vacon 500x AC drive provides the capability to configure four prohibited frequency bands. Parameter
504 (Skip
Freq Band)
, the Skip Frequency Band parameter, sets the width of the band above and below each of the
prohibited frequencies set in parameters 505 , 506 , 507, and 508 (Skip Freq 1,2,3, 4) .
For example, if this parameter is set to its default value of 1 Hz and parameter 505 (Skip Freq 1) is set to
20 Hz, a skip band from 19 to 21 Hz is established.
505 Skip Freq 1
506 Skip Freq 2
507 Skip Freq 3
508 Skip Freq 4
Default: 0.0 Hz
Range: Min Freq-Max Freq
Level 2
As discussed in the description of parameter 504 (Skip Freq Band) , the drive may be configured to skip
certain frequencies. These three parameters set the center of the three skip frequency bands (with the
width of each band being twice the value of parameter
504 — an equal amount above and below the skip
frequency).
For example, if parameter
504 is set to 2.5 Hz and parameter 508 (Skip Freq 4) is set to 55 Hz, a skip band
from 52.5 to 57.5 Hz is established.
509 Rated Mtr Volt
Default: Model
dependent
Range: 100 V - 690 V
Level 2, Macro
The Rated Motor Voltage parameter configures the rated motor voltage, and allows a user to enter the rated
voltage from the motor nameplate to provide optimal control and protection. This is usually the amount of
voltage delivered to the motor terminals at the setting of
503 (V/Hz Knee Freq ).
510 Rated Mtr FLA Default: ND Rating
Range: 50% - 200% of ND rating
Level 2, Macro
The Rated Motor FLA parameter allows a user to enter the rated FLA from the motor nameplate to provide
optimal control and protection. This parameter should be configured to the value on the nameplate of the
motor, as that value is used in calculating the percentage of current at which the drive is operating.
For information on motor timed overload operation, and how Parameter 510 works with it, see page 80.
511 Rated Mtr RPM
Default: 1750 rpm
Range: 0-24000 rpm
Level 2, Macro
This parameter replaces the slip compensation parameter setting of the drive so the user does not need to
calculate it.
512 Midpoint Freq Default: 60.0 Hz
Range: 0.0 Hz-V/Hz Knee Freq
Level 2
When parameter 501, V/Hz Select, is configured to “Linear 2pc,” this parameter, together with parameter
513, Midpoint Volt, defines an additional point in the V/Hz characteristic.
513 Midpoint Volt Default: 100.0%
Range: 0.0%-100.0%
Level 2
When parameter 501, V/Hz Select, is configured to “Linear 2pc,” this parameter, along with parameter 512,
Midpoint Freq, defines an additional point in the V/Hz characteristic.
514 Motor RS
Default: Model
dependent
Range: 0.00-655.35 Ohms
Level 2, Macro
This parameter allows direct entry of the Stator Resistance (Rs) of the motor for better vector performance.
The motor manufacturer can provide this information.
515 Power Factor Default: 0.80
Range: 0.50 - .99
Level 2, Macro
This parameter allows direct entry of the motor’s power factor for better vector performance. The motor
manufacturer can provide this information.