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Application Notes
C-5
PowerFlex 700S Phase II AC Drive User Manual -
Publication 20D-UM006G-EN-P – July 2008
1. Parameter 527 [Start/Acc Boost] is used to create additional torque for
breakaway from zero speed and acceleration of heavy loads at lower
speeds.
2. Parameter 528 [Run Boost] is used to create additional running torque at
low speeds. The value is typically less than the required acceleration
torque. The drive will lower the boost voltage to this level when running
at low speeds (not accelerating). This reduces excess motor heating that
could be caused if the higher start/accel boost level were used.
3. Parameters 529 [Break Voltage] and 530 [Break Frequency] are used to
increase the slope of the lower portion of the Volts/Hertz curve,
providing additional torque.
4. Parameters 1 [Motor NP Volts] and 3 [Motor NP Hertz] set the upper
portion of the curve to match the motor design and mark the beginning of
the constant horsepower region.
5. Parameters 531 [Maximum Voltage] and 532 [Maximum Freq] slope that
portion of the curve used above base speed.
Motor Overload
Setting Parameter 338 [Mtr I2T Spd Min]
Parameter 338 [Mtr I2T Spd Min] sets the minimum speed for the motor
overload (I
2
T) function. This value determines the minimum speed the drive
should run below the minimum current threshold set in parameter 337 [Mtr
I2T Curr Min]. Parameters 338 [Mtr I2T Spd Min] and 337 [Mtr I2T Curr
Min] set the first current/speed breakpoint. From this point the current
threshold is linear to the value specified by the motor service factor set in
parameter 336 [Motor OL Factor].
Содержание PowerFlex 700S
Страница 1: ...USER MANUAL Firmware Versions 1 xxx 4 002 PowerFlex 700S High Performance AC Drive Phase II Control ...
Страница 58: ...2 8 Start Up PowerFlex 700S Phase II AC Drive User Manual Publication 20D UM006G EN P July 2008 Notes ...
Страница 147: ...Programming and Parameters 3 89 PowerFlex 700S Phase II AC Drive User Manual Publication 20D UM006G EN P July 2008 ...
Страница 278: ...D 8 HIM Overview PowerFlex 700S Phase II AC Drive User Manual Publication 20D UM006G EN P July 2008 Notes ...
Страница 316: ...Index 6 PowerFlex 700S Phase II AC Drive User Manual Publication 20D UM006G EN P July 2008 ...
Страница 317: ......