Danfoss VLT AutomationDrive FC 300 Programming Manual page 83

3 Parameter descriptions
3-77 Ramp 4 S-ramp Ratio at Decel. Start
Range:
50 %* [Application dependant]
3-78 Ramp 4 S-ramp Ratio at Decel. End
3
Range:
50 %* [Application dependant]
3.5.8 3-8* Other Ramps
Configure parameters for special ramps e.g. Jog or Quick Stop.
3-80 Jog Ramp Time
Range:
Application [0.01 - 3600.00 s]
dependent*
Par . 3 − 80 =
log speed
Δ
3-81 Quick Stop Ramp Time
Range:
Application [0.01 - 3600.00 s]
dependent*
82
Function:
Enter the proportion of the total ramp-down time (par. 3-72
deceleration torque increases. The larger the percentage value, the greater the jerk compensation
achieved, and thus the lower the torque jerks in the application.
Function:
Enter the proportion of the total ramp-down time (par. 3-72
deceleration torque decreases. The larger the percentage value, the greater the jerk compensation
achieved, and thus the lower the torque jerks in the application.
Function:
Enter the jog ramp time, i.e. the acceleration/deceleration time between 0 RPM and the rated motor
frequency n
not exceed the current limit in par. 4-18
a jog signal via the LCP, a selected digital input, or the serial communication port. When jog state
is disabled then the normal ramping times are valid.
t jog s x n s RPM
( par . 3 − 19 ) RPM
Function:
Enter the quick–stop ramp-down time, i.e. the deceleration time from the synchronous motor speed
to 0 RPM. Ensure that no resultant over-voltage will arise in the inverter due to regenerative oper-
ation 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
par. 4-18 Current Limit
via the serial communication port.
MG.33.M8.02 - VLT
. Ensure that the resultant output current required for the given jog ramp time does
s
Current Limit
). Quick-stop is activated by means of a signal on a selected digital input, or
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is a registered Danfoss trademark
FC 300 Programming Guide
Ramp 4 Ramp Down Time
) where the
Ramp 4 Ramp Down Time
) where the
. The jog ramp time starts upon activation of