Danfoss VLT AutomationDrive FC 301 Programming Manual page 100

VLT AutomationDrive FC 301/302
Programming Guide
Parameter 1-81 Min Speed for Function at Stop [RPM]
Table 130: Parameter 1-81 Min Speed for Function at Stop [RPM]
1-81 Min Speed for Function at Stop [RPM]
Default value: Size related
Conversion index: 67
Set the speed at which to activate parameter 1-80 Function at Stop.
Parameter 1-82 Min Speed for Function at Stop [Hz]
Table 131: Parameter 1-82 Min Speed for Function at Stop [Hz]
1-82 Min Speed for Function at Stop [Hz]
Default value: Size related
Conversion index: -1
Set the output frequency at which to activate parameter 1-80 Function at Stop.
Parameter 1-83 Precise Stop Function
Table 132: Parameter 1-83 Precise Stop Function
1-83 Precise Stop Function
Default value: [0] Precise ramp stop
Conversion index: –
This is valid for FC 302 only.
This parameter cannot be adjusted while the motor is running.
Op- Name Description
tion
[0]* Precise Only optimal when the operational speed, for example, the operational speed of a conveyor belt, is con-
ramp stop stant. This is an open-loop control. Achieves high repetitive precision at the stop point.
[1] Cnt stop Counts the number of pulses, typically from an encoder, and generates a stop signal after a preprogram-
with reset med number of pulses, defined in parameter 1-84 Precise Stop Counter Value, has been received at terminal
29 or terminal 33. This is direct feedback with one-way closed-loop control. The counter function is activa-
ted (starts timing) at the edge of the start signal (when it changes from stop to start). After each precise
stop, the number of pulses counted during ramp-down to 0 RPM are reset.
[2] Cnt stop Same as [2] Cnt stop with reset but the number of pulses counted during ramp down to 0 RPM are deduc-
w/o reset
ted from the counter value entered in parameter 1-84 Precise Stop Counter Value. This reset function can be
used to compensate for the extra distance done during ramping down and to reduce the impacts of grad-
ual wear of mechanical parts.
[3] Speed Stops at precisely the same point, regardless of the present speed. The stop signal is delayed internally
comp stop when the present speed is lower than the maximum speed (set in parameter 4-19 Max Output Frequency).
100 | Danfoss A/S © 2022.12
Parameter type: Range, 0 - 600 RPM
Data type: Uint16
Parameter type: Range, 0 - 500.0 Hz
Data type: Uint16
Parameter type: Option
Data type: Uint8
N O T I C E
N O T I C E
Parameter Descriptions
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: True
Setup: All setups
Change during operation: False
AU275636650261en-000101 / 130R0334