Danfoss VLT AutomationDrive FC 302 Design Guide

FC 300 Design Guide
How to Program
3-61 Ramp 3 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 ca nnot reach the
torque limit (set in p a r. 4-16). The value 0.00
corresponds to 0.01 s in speed mode.
3-62 Ramp 3 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.
There can be no overvoltage in the inverter due to
regenerative operation of the motor. Nor can the
generated current reach the torque limit (set in
par. 4-17). The value 0.00 corres ponds to 0 .0 1
s in speed mode.See ramp in par. 3-61.
3-65 Ramp 3 S-ramp Ratio at Accel. Start
Range:
1-99%
*
50%
Function:
Set the per iod of the total ramp-up time (par. 3-61)
where the acceleration torque is growing smoothly.
A large percentage minimizes torq ue je rks.
3-66 Ramp 3 S-ramp Ratio at Accel. End
Range:
1-99%
*
50%
Function:
Set the per iod of the total ramp-up time (par. 3-61)
where the acceleration torque is declining smoothly.
A large percentage minimizes torq ue je rks.
3-67 Ramp 3 S-ramp Ratio at Decel. Start
Range:
1-99%
*
50%
Function:
Set the period of the total ramp-down time
(par. 3-6 2) where the de cele ration torque
is growing smoothly. A large percentage
minimizes torque jerks.
3-68 Ramp 3 S -ram p Ratio at Decel. End
Range:
1-99%
*
50%
Function:
Set the period of the total ramp-down time
(par. 3-6 2) where the de cele ration torque
is declining smoothly. A large percentage
minimizes torque jerks.
" 3-7* Ramp 4
3-70 Ramp 4 Type
Option:
*
Linear [0]
*
default setting ()display text []value for use in communication via serial communication port
159
MG.33.B
3.22 - VLT is a registered Danfoss trademark

Danfoss VLT AutomationDrive FC 302 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 302
Category	DC Drives
Language	English