Danfoss VLT Micro Drive FC 51 Programming Manual page 25

Parameter Descriptions
VLT
3-52 Ramp2 Ramp-down Time
Range: Function:
Size [0.05-3600.00 Enter ramp down time from rated
related s] motor frequency (f
M,N
Frequency to 0 Hz.
Choose a ramp down time that
does not cause over-voltage in
inverter due to regenerative
4 4
operation of motor. Furthermore,
regenerative torque must not
exceed limit set in 4-17 Torque Limit
in Generator Mode.
4.4.6 3-8* Other Ramps
This section contains parameters for Jog and Quick Stop
Ramps.
With a Jog Ramp it is possible to both ramp up and down
whereas, it is only possible to ramp down with the Quick
Stop Ramp.
3-80 Jog Ramp Time
Range: Function:
Size [0.05-3600.00 A linear ramp applicable when Jog
related * s] is activated. See parameter group
5-1* Digital Inputs, option [14].
Ramp up time = Ramp down time.
Jog Ramp time starts upon
activation of a jog signal via a
selected digital input or serial
communication port.
3-81 Quick Stop Ramp Time
Range: Function:
Size related [0.05-3600.00 s] A linear ramp applicable when
*
Q-stop is activated. See
parameter group 5-1* Digital
Inputs, option [4].
24 MG02C602 - VLT
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