Danfoss VLT AutomationDrive FC 300 Series Design Guide

FC 300 Design Guide
How to Program
Function:
The ramp-up time is the acceleration time from 0
RPM to the rated motor speed nM,N (par. 1-23),
provided that the output current does not reach
thetorquelimit(setinpar. 4-16). Thevalue0.00
corresponds to 0.01 s in speed mode.
3-42 Ramp 1 Ramp-down Time
Range:
0.01 - 3600.00 s
*
ExpressionLimits
Function:
The ramp-down time is the dec eleration time from
the rated motor speed n
M,N
(par. 1-23) to 0 RPM,
provided that there is no over-voltage in t h e inverter
due to regenerative operation of the motor, or if the
generated current reaches the torque limit (set in
par. 4-17). The value 0.00 corresponds to 0.01 s in
speed mode. See ramp-up time in par. 3-41
3-45 Ramp 1 S-ramp Ratio at A ccel. Start
Range:
1 - 99%
*
50%
Function:
Set the period of the total ramp-up time (par. 3-41)
where the acce leration torque is growing smoothly.
A large percentage minimizes torque jerks.
3-46 Ramp 1 S-ramp Ratio at Accel. End
Range:
1-99%
*
50%
Function:
Set the per iod of the total ramp-up time (par. 3-41)
where the acceleration torque is declining smoothly.
A large percentage minimizes torq ue je rks.
3-47 Ramp 1 S-ramp Ratio at Decel. Start
Range:
1-99%
*
50%
Function:
Set the period of the total ramp-down time
(par. 3-4 2) where the de cele ration torque
is growing smoothly. A large percentage
minimizes torque jerks.
3-48 Ramp 1 S -ram p Ratio at Decel. End
Range:
1-99%
*
50%
Function:
Set the period of the total ramp-down time
(par. 3-4 2) where the de cele ration torque
is declining smoothly. A large percentage
minimizes torque jerks.
" 3-5* Ramp 2
3-50 Ramp 2 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
157
MG.33.B
3.22 - VLT is a registered Danfoss trademark

Danfoss VLT AutomationDrive FC 300 Series Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300 Series
Category	DC Drives
Language	English