Op-
tion
Name
Description
[5]
Coast at low
reference
When the reference is below
parameter 1-81 Min Speed for Function at Stop [RPM]
, the motor is discon-
nected from the drive.
[6]
Motor check,
alarm
[8]
Torque ramp
to zero
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 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.
AU373327181955en-000101 / 130R1208 | 87
Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide
Содержание VLT AutomationDrive EZ FC 321
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