Danfoss VLT AutomationDrive FC 300 Design Manual page 161

FC 300 Design Guide
is declining smoothly. A large percentage
minimizes torque jerks.
3-8* Other Ramps
"
3-80 Jog Ramp Time
Range:
0.01 - 3600.00 s
Function:
The jog ramp time is the acceleration/deceleration
time from 0 RPM to the rated motor frequency
n par. 1-25. The output current cannot be
M,N
higher than the torque limit (set in par. 4-16).
The jog ramp time starts when a jog command is
activateed via the control panel, a programmed
digital input, or the serial communication port.
3-81 Quick Stop Ramp Time
Range:
0.01 - 3600.00 s
Function:
The ramp-down time is the deceleration time from
the rated motor speed to 0 RPM. No overvoltage can
arise in the inverter due to generating operation of
the motor. Nor can the generated current be higher
than the torque limit (set in par. 4-17). Quick-stop
is activated by means of a signal on a programmed
digital input, or via the serial communication port.
* default setting ( )
How to Program
display text [ ] value for use in communication via serial communication port
MG.33.B3.22 - VLT is a registered Danfoss trademark
*
s
3-9* Digital Pot.Meter
"
This function allows the user to increase or decrease
the resulting reference by activating digital inputs
setup as either INCREASE, DECREASE or CLEAR.
Minimum one input must be set up as INCREASE
respectively DECREASE to make it active.
3-90 Step Size
Range:
0.01 - 200.00%
Function:
If INCREASE/DECREASE is activated for less
than 400 msec, the resulting reference will
be increased/decreased by the amount set
in par. 3-90 Step Size.
3-91 Ramp Time
Range:
0.01 - 3600.00 s
Function:
If INCREASE / DECREASE is activated for more than
*
s
400 msec, the resulting reference will be ramped
up / down according to this ramp time. The ramp
time is defined as the time it will take to change
the resulting reference from 0 % to 100 %.
3-92 Power Restore
Option:
*
Off
On
*
0.01%
*
1.00s
[0]
[1]
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