Owner's manual

5–52 Programming
[IR Drop Volts] – Firmware 4.01 & later
Used in Sensorless Vector mode only – Sets the
value of volts dropped across the resistance of the
motor stator. If set to zero, the drive will use an
internal value based on motor F.L.A. and rated
voltage. Some motors (i.e. 6 pole, special, etc.) may
be particularly sensitive to the adjustment of this
parameter. Refer to the tuning procedure in Chapter
4 for further information.
Parameter Number 194
Parameter Type Read and Write
Display Units / Drive Units 1 Volt / 4096 = Drive Rated Volts
Factory Default 0 Volts
Minimum Value 0 Volts
Maximum Value 25% of Drive Rated Volts
[Flux Up Time] – Firmware 4.01 & later
Sets the amount of time the drive will use to try and
achieve full motor stator flux. When a Start
command is issued, DC current at current limit level
is used to build stator flux before accelerating.
Parameter Number 200
Parameter Type Read and Write
Display Units / Drive Units 0.1 Sec / Sec x 10
Factory Default 0.0 Sec
Minimum Value 0.0 Sec
Maximum Value 5.0 Sec
[Start Boost]
This parameter sets the DC start boost level for
acceleration when [DC Boost Select] is set to “Fixed”
or “Full Custom.”
Parameter Number 48
Parameter Type Read and Write
Display Units / Drive Units 1 Volt / 4096 = Drive Rtd Volts
Factory Default 0 Volts
Minimum Value 0 Volts
Maximum Value 9.5% of Drive Rated Voltage
[Run Boost]
This parameter sets the DC boost level for constant
speed level when [DC Boost Select] is set to “Fixed”.
Parameter Number 83
Parameter Type Read and Write
Display Units / Drive Units 1 Volt / 4096 = Drive Rtd Volts
Factory Default 0 Volts
Minimum Value 0 Volts
Maximum Value 9.5% of Drive Rated Voltage
[Boost Slope] – Firmware 4.01 & later
Sets the slope of the volts/Hertz curve from zero
Hertz to the intersect point (see Fixed boost diagram
above). The slope is determined by multiplying:
Run Boost x Boost Slope = A
Start Boost x Boost Slope = B.
Parameter Number 169
Parameter Type Read and Write
Display Units / Drive Units None
Factory Default 1.5
Minimum Value 1.0
Maximum Value 8.0
[Break Voltage]
Sets the voltage the drive will output at [Break
Frequency]. Combined with [Break Frequency], this
parameter determines the volts-per-Hertz pattern
between 0 and [Break Frequency].
Parameter Number 50
Parameter Type Read and Write
Display Units / Drive Units 1 Volt / 4096 = Drive Rtd Volts
Factory Default 25% of Drive Rated Voltage
Minimum Value 0 Volts
Maximum Value 50% of Drive Rated Voltage
[Break Frequency]
This parameter sets a midpoint frequency on a
custom volts-per-Hertz curve. Combined with [Break
Voltage], this value determines the volts-per-Hertz
ratio between 0 and [Break Frequency].
Parameter Number 49
Parameter Type Read and Write
Display Units / Drive Units 1 Hertz / Hertz x 10 (x 1 frn<4.01)
Factory Default 25% of [Maximum Freq]
Minimum Value 0 Hz
Maximum Value 120 Hz
Important: Please note the resolution change with Frn 4.01.
Motor Control