88 ADV100 • Functions description and parameters list
22.5–FUNCTIONS/SPEEDCAPTURE
This function allows the drive to capture a motor running due to inertia or driven by the load. The function is also
enabled in case of an automatic restart after an alarm condition.
Main elds of application:
- Capturing a motor set in motion by the load (for example pump motors driven by the uid)
- Capturing a motor connected directly to the power mains
- Capturing a motor running due to temporary disabling of the drive
- Capturing a motor that is running in the case of an automatic restart after an alarm
Note ! If the drive is enabled with the motor running and this function disabled, the drive could be blocked due to the intervention
of the Overcurrent or Undercurrent protections
Menu PAR Description UM Type FB BIT Def Min Max Acc Mod
22.5.1 3350 Speedcapture ENUM Disable 0 1 ERW FV_
This parameter is used to enable the function to capture a motor that is running.
0 Disable
1 Enable
If set to 0 the capture running motor function is disabled. The output frequency starts from 0 and passes to the set refer-
ence value using the ramp.
If set to 1 the capture running motor function is enabled.
This function is available with Regulationmode=FluxvectorCL or V/fcontrol.
This function is not available with Regulationmode=FluxvectorOL.
With Regulationmode=FluxvectorCL the capture procedure consists of forcing the output frequency to the value
measured by the encoder, and then bringing the motor speed to the reference value using the ramp
SpeedCapture_00.vsd
OutFreq
MotorSpd
OutCurr
Par 3366
Waiting for demagnetiz
Acceleration
Magnetiz
Flux vector CL
With Regulationmode=V/fcontrol the capture procedure consists of altering the inverter output frequency until the
actual motor speed is detected, then increasing the motor speed to the reference value using the ramp. The proce-
dure can take several seconds, depending on the type of load and parameter settings. If this function is enabled on
a motor at speed = 0 and drive speed reference = 0, the motor might start running until the moment the drive detects
the actual motor speed, after which the motor speed passes to the speed reference setting, i.e. 0. The initial value of
the output frequency depends on the condition that generated the capture procedure. Various conditions are possible:
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