Baldor VS1GV21-1B Installation & Operating Manual page 106

Parameter (Number)
Block Title
SKIP FREQ 1 (2701)
SKIP FRE-
QUENCY SKIP FREQ 2 (2703)
SKIP FREQ 3 (2705)
SKIP BAND 1 (2702)
SKIP BAND 2 (2704)
SKIP BAND 3 (2706)
SYNCHRO SYNC START FWD (2801)
START Only available or active in V/F or
Open Vector modes. Ignore for
Closed Vector mode.
SYNC START REV (2802)
Only available or active in V/F or
Open Vector modes. Ignore for
Closed Vector mode.
SYNC AT MAX FREQ (2803)
Only available or active in V/F or
Open Vector modes. Ignore for
Closed Vector mode.
SYNCHRO SCAN V/F (2804)
Only available or active in V/F or
Open Vector modes. Ignore for
Closed Vector mode.
7-28 Parameter Descriptions
Table 7-2 Level 2 Parameter Block Definitions Continued
Selection (Value)
Preset Value: 0.00
Range: 0 - MAX Speed
The center frequency of the frequency band to skip or treat as a deadband.
Three bands can be defined independently or the three values can be
selected to skip one wide frequency band.
Preset Value: 0.00
Range: 0 - MAX Speed
Defines the width of the band on either side of the Skip Frequency. The drive
is not allowed to operate continuously at any point within a range defined
by the Skip Frequency and the Skip Band. The lower boundary of this band
is equal to the Skip Frequency minus the Skip Band. The upper boundary
of this band is equal to the Skip Frequency plus the Skip Band. If the speed
reference is set to a value between the lower boundary and the upper
boundary, the drive will operate at the lower boundary when the band is being
approached from a speed less than the lower boundary. If the band is being
approached from a speed greater than the upper boundary, the drive will
operate at the upper boundary. Should the speed reference be set to a value
outside the band, then the drive will ramp through the band using the normal
ACC/DEC settings. For example, if Skip Frequency 1 (P2701) is set to 20Hz
and Skip Band 1 (P2702) is set to 5Hz, then the lower boundary of the band is
at 15Hz and the upper boundary of the band is at 25Hz.
Preset Value: 0
Range: 0 - 1
Off (0) Synchro Start Forward feature not active.
On (1) Synchro Start Forward feature active.
Synchro Start Forward feature begins scanning motor rotational frequency in
the drive forward direction. If on, scan always starts in FWD direction even if
P2802 is ON.
Preset Value: 0
Range: 0 - 1
Off (0) Synchro Start Reverse feature not active.
On (1) Synchro Start Reverse feature active.
Synchro Start feature begins scanning motor rotational frequency in the drive
reverse direction. If P2801 is ON, scan always starts in FWD direction even if
P2802 is ON.
Preset Value: 1
Range: 0 - 1
Off (0) Synchro at Max Frequency feature not active.
On (1) Synchro at Max Frequency feature active.
Allows the Synchro Start feature to begin scanning motor rotational frequency
at the MAX Frequency (On) or at the last speed reference command (Off).
Preset Value: 10.0% V/F – 10% Open Vector
Range: 1.0 - 25.0%
Sets the Volts/Hertz ratio for the Synchro Start feature as a percentage of the
V/F ratio defined by the "Control Base Volts/Control Base Frequency". This
Synchro Scan V/F percentage value is multiplied by the "Control Base Volts/
Control Base Frequency" value. If this value is too high, the inverter may fault
on Overcurrent.
Parameter Name and Description
MN765