FC 300 Design Guide
How to Program
3-51 Ramp 2 Ramp-up Time
Range:
0.01 - 3600.00 s
*
s
Function:
The ramp-up time is the accele ration time from
0 RPM to the rated motor speed n
M,N
(par.
1-23). The output current must not reach the
torque limit (set in p a r. 4-16). The value 0.00
corresponds to 0.01 sec. in speed mode.
3-52 Ramp 2 Ramp-down Time
Range:
0.01 - 3600.00 s.
*
s
Function:
The ramp-down time is the dec eleration time from
the rated motor speed n
M,N
(par. 1-23) to 0 RPM.
Theremustbenoovervoltageintheinverter
because of regenerative operation of the m otor, nor
can the generated current reach the torque lim it
(set in par. 4-17). The value 0.00 corr esponds to
0.01 s in speed m o de. See ramp in par. 3-51.
3-55 Ramp 2 S-ramp Ratio at A ccel. Start
Range:
1 - 99%
*
50%
Function:
Set the per iod of the total ramp-up time (par. 3-51)
where the acceleration torque is growing smoothly.
A large percentage minimizes torq ue je rks.
3-56 Ramp 2 S-ramp Ratio at Accel. End
Range:
1-99%
*
50%
Function:
Set the period of the total ram-up time (par. 3 -51)
where the acceleration torque is declining smoothly.
A large percentage minimizes torq ue je rks.
3-57 Ramp 2 S-ramp Ratio at Decel. Start
Range:
1-99%
*
50%
Function:
Set the period of the total ramp-down time
(par. 3-5 2) where the de cele ration torque
is growing smoothly. A large percentage
minimizes torque jerks.
3-58 Ramp 2 S -ram p Ratio at Decel. End
Range:
1-99%
*
50%
Function:
Set the period of the total ramp-down time
(par. 3-5 2) where the de cele ration torque
is declining smoothly. A large percentage
minimizes torque jerks.
" 3-6* Ramp 3
3-60 Ramp 3 Type
Option:
*
Linear [0]
Function:
Selects the desired ramp type, depending on
requirements for acceleration/deceleration.
*
default setting ()display text []value for use in communication via serial communication port
158
MG.33.B
3.22 - VLT is a registered Danfoss trademark
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