X5 AC Drive User’s Manual
Chapter 7: X5 Parameters
DPD00089A
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© 2009 Vacon Incorporated All Rights Reserved
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 X5 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 90.
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.
Table 7-2: Description of X5 Parameters
(Page 16 of 40)
