Vacon X5 - Page 89

X5 AC Drive User’s Manual Chapter 7: X5 Parameters
DPD00089A - 87 - © 2009 Vacon Incorporated All Rights Reserved
516 Slip Comp Enable
Default: No
Range: n/a
Level 1,2
This parameter is accessible through Macro modes, or through parameter 501 (V/Hz Select) and choosing Vector
mode. It is only visible if the drive is in a vector-capable mode; otherwise, it is hidden. The following data values may
be assigned to this parameter:
Parameter Value
Description
No No Slip Compensation enabled
Yes Slip Compensation enabled
Parameter 516 permits activation of slip compensation for better speed regulation. The motor rated speed must be
entered into parameter 511 (Rated Mtr RPM) for best results.
517 Single Phase
Default: No
Range: n/a
Level 2
This parameter determines whether or not Phase Loss faults will occur.
The following data values may be assigned to this parameter:
Parameter Value
Description
No No single phase input operation. Phase loss engaged.
Yes Single phase operation. No phase loss.
519 Find Mtr Data
Default: Not active
Range: n/a
Macro
This parameter activates the drive’s ability to measure the stator resistance of the attached motor. The automatic stator
resistance measurement can be performed either through the keypad or through the serial link. See “Measuring Stator
Resistance (RS Measurement)” on page 51 for more information about this parameter. The following data values may
be assigned:
Parameter Value
Description
Not Active No stator RS measurement.
Motor RS Automatic RS measurement using macro procedure.
520 Filter FStator
Default: 8 ms
Range: 1 - 100 ms
Level 2 (SVC)
This parameter filters the stator frequency applied to the motor, which can help tune the acceleration behavior of the
motor. This is particularly helpful when using short ramps and operating the motor at a frequency above the “V/Hz Knee
Freq” (parameter 503) value (field weakening area). Lower values allow dynamic currents to be produced, but with
greater peaks. This could produce unstable states in the field weakening area. Low values for this parameter can cause
overcurrent faults while accelerating to frequencies over the Knee Frequency. Higher values allow the drive to run more
smoothly at frequencies over the Knee Frequency and protect the drive against overcurrents--often the case when using
special motors or spindle drives. This parameter is only visible if the drive is in a vector-capable mode.
521 Start Field En
Default: No
Range: n/a
Level 2 (SVC)
Parameter Value Description
No The shaft will begin rotating after receiving a Start command, without delay. If the application has
heavy load conditions or short ramp times, this setting can produce very large starting currents, to
overcome the inertia of the system. This may produce nuisance trips when starting.
Yes The shaft will begin rotating after receiving a Start command, with delay. During this delay, the drive
is building up the magnetic field in the motor. This allows the drive to start in vector mode with less
starting current.
This parameter is only visible if the drive is in a vector-capable mode; otherwise, it is hidden.
Table 7-2: Description of X5 Parameters (Page 17 of 40)