Vacon 50X, User Manual

Page: 74 / 132

73 vacon vacon 50x parameters
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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.
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).
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 config-
ured 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 610 works with
it, see page 78.
This parameter replaces the slip compensation parameter setting of the drive so the user
does not need to calculate it.
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.
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.
This parameter allows direct entry of the Stator Resistance (Rs) of the motor for better
vector performance. The motor manufacturer can provide this information, or you can
physically measure this value with an ohmmeter. From the line-to-line measurement of
motor resistance, enter half the measured value. (See page 46 for more information.)
This parameter allows direct entry of the motor’s power factor for better vector perfor-
mance. The motor manufacturer can provide this information.
509 Rated Mtr Volt Default: Model dependent
Range: 100–690 V
Level 2, Macro
510 Rated Mtr FLA Default: ND Rating
Range: 50–200% of ND rating
Level 2, Macro
511 Rated Mtr RPM Default: 1450 rpm
Range: 0–24000 rpm
Level 2, Macro
512 Midpoint Freq Default: 50.0 Hz
Range: 0.0 Hz–V/Hz Knee Freq
Level 2
513 Midpoint Volt Default: 100.0%
Range: 0.0–100.0%
Level 2
514 Motor RS Default: Model dependent
Range: 0.00–655.35 Ohms
Level 2, Macro
515 Power Factor Default: 0.80
Range: 0.50–1.00
(0.5 times the measured line to line
resistance of motor)
Level 2, Macro