Danfoss VLT MICRO Manual page 65

Pr.101 Auto Acceleration/Deceleration Adjustment Selection
Factory Setting 00
Units None
Settings 00 Linear acceleration deceleration
01 Automatic acceleration, linear deceleration
02 Linear acceleration, automatic deceleration
03 Automatic acceleration, deceleration
04 For deceleration and stall due to overvoltage
Auto acceleration/deceleration adjustment selection can reduce the mechanical vibration
resulted from run and stop. When acceleration, the AC motor drive can maintain the
acceleration current to its rated value, making the motor operate to the set frequency by
the fastest acceleration. When decelerating, it can also judge the load regeneration
automatically, and then stop the motor smoothly in the fastest deceleration time.
Using auto acceleration/deceleration selection can avoid complex regulation
procedure. It performs acceleration operation without stall and deceleration stop
without braking resistors. It can also improve operation efficiency effectively and save
energy.
This parameter provides five modes from which to choose:
00 Linear acceleration deceleration
(operation at Pr.10, Pr.11 or Pr.12, Pr.13 acceleration/deceleration time)
01 Automatic acceleration, linear deceleration
(operation by automatic acceleration, Pr.11 or Pr.13 deceleration time)
02 Linear acceleration, automatic deceleration
(operation by automatic deceleration time, Pr.10 or Pr.12 acceleration time)
03 Automatic acceleration deceleration
(acceleration/deceleration time is completely decided by AC motor drive
automatic control)
04 Linear acceleration/deceleration according to the time setting of parameters Pr.11
and Pr.13 auto deceleration.
The auto deceleration function is not suitable when using braking resistors.
Pr.102 Auto Voltage Regulation (AVR)
Factory Setting 00
Units None
Settings 00 AVR function enabled
01 AVR function disabled
02 AVR function disabled when stop
03 AVR function disabled for deceleration
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VLT MICRO