Danfoss VLT AutomationDrive FC 301 Programming Manual page 151

VLT AutomationDrive FC 301/302
Programming Guide
Parameter 3-81 Quick Stop Ramp Time
Table 251: Parameter 3-81 Quick Stop Ramp Time
3-81 Quick Stop Ramp Time
Default value: Size related
Conversion index: -2
Enter the quick–stop ramp-down time, that is the deceleration time from the synchronous motor speed to 0 RPM. Ensure that no
resulting overvoltage occurs in the inverter due to regenerative operation of the motor required to achieve the given ramp-down
time. Ensure also that the generated current required to achieve the given ramp-down time does not exceed the current limit (set in
parameter 4-18 Current Limit). Quick stop is activated with a signal on a selected digital input, or via the serial communication port.
RPM
P 4-13 RPM
high limit
Reference
P 1-25
Motor speed
P 4-11 RPM
low limit
Illustration 54: Quick Stop Ramp Time
Parameter 3-82 Quick Stop Ramp Type
Table 252: Parameter 3-82 Quick Stop Ramp Type
3-82 Quick Stop Ramp Type
Default value: [1] Linear
Conversion index: –
Select the ramp type, depending on requirements for acceleration/deceleration. A linear ramp gives constant acceleration during
ramping. An S-ramp gives non-linear acceleration, compensating for jerk in the application.
Option
[0]*
[1]
[2]
Parameter 3-83 Quick Stop S-ramp Ratio at Decel. Start
Table 253: Parameter 3-83 Quick Stop S-ramp Ratio at Decel. Start
3-83 Quick Stop S-ramp Ratio at Decel. Start
Default value: 50%
Conversion index: 0
Danfoss A/S © 2022.12
Parameter type: Range, 0.01 - 3600 s
Data type: Uint32
Time
P 3-81
Qramp
Qstop
Parameter type: Option
Data type: Uint8
Name
Linear
S-ramp Const Jerk
S-ramp Const Time
Parameter type: Range, 1 - 99%
Data type: Uint8
Parameter Descriptions
Setup: 2 setups
Change during operation: True
Setup: All setups
Change during operation: True
Description
Setup: All setups
Change during operation: True
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