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
Parameter type: Range, 0 - 600 RPM
Setup: All setups
Conversion index: 67
Data type: Uint16
Change during operation: True
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
Parameter type: Range, 0 - 500.0 Hz
Setup: All setups
Conversion index: -1
Data type: Uint16
Change during operation: True
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
Parameter type: Option
Setup: All setups
Conversion index: –
Data type: Uint8
Change during operation: False
N O T I C E
This is valid for FC 302 only.
N O T I C E
This parameter cannot be adjusted while the motor is running.
Op-
tion
Name
Description
[0]*
Precise
ramp stop
Only optimal when the operational speed, for example, the operational speed of a conveyor belt, is con-
stant. This is an open-loop control. Achieves high repetitive precision at the stop point.
[1]
Cnt stop
with reset
Counts the number of pulses, typically from an encoder, and generates a stop signal after a preprogram-
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
w/o reset
Same as
[2] Cnt stop with reset
but the number of pulses counted during ramp down to 0 RPM are deduc-
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
comp stop
Stops at precisely the same point, regardless of the present speed. The stop signal is delayed internally
when the present speed is lower than the maximum speed (set in
parameter 4-19 Max Output Frequency
).
AU275636650261en-000101 / 130R0334
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Parameter Descriptions
VLT AutomationDrive FC 301/302
Programming Guide
Summary of Contents for VLT AutomationDrive FC 301
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