Danfoss VLT AutomationDrive FC 300 Design Manual page 158

FC 300 Design Guide
Function:
Selects the desired ramp type, depending on
requirements for acceleration/deceleration.
3-51 Ramp 2 Ramp up Time
Range:
0.01 - 3600.00 s
Function:
The ramp-up time is the acceleration time from
0 RPM to the rated motor speed n
1-25). The output current must not reach the
torque limit (set in par. 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.
Function:
The ramp-down time is the deceleration time from
the rated motor speed n
There must be no over-voltage in the inverter
because of regenerative operation of the motor, nor
can the generated current reach the torque limit
(set in par. 4-17). The value 0.00 corresponds to
0.01 s in speed mode. See ramp in par. 3-51.
3-55 Ramp 2 S-ramp Ratio at Accel. Start
Range:
1 - 99%
Function:
Set the period of the total ramp up time (par. 3-51)
where the acceleration torque is growing smoothly.
A large percentage minimises torque jerks.
3-56 Ramp 2 S-ramp Ratio at Accel. End
Range:
1 - 99%
Function:
Set the period of the total ramp up time (par. 3-51)
where the acceleration torque is declining smoothly.
A large percentage minimises torque jerks.
default setting ( )
*
158
How to Programme
(par.
M,N
(par. 1-25) to 0 RPM.
M,N
*
*
display text [ ] value for use in communication via serial communication port
MG.33.B4.02 - VLT is a registered Danfoss trademark
3-57 Ramp 2 S-ramp Ratio at Decel. Start
Range:
1 - 99%
Function:
Set the period of the total ramp down time
*
s
(par. 3-52) where the deceleration torque
is growing smoothly. A large percentage
minimises torque jerks.
3-58 Ramp 2 S-ramp Ratio at Decel. End
Range:
1 - 99%
Function:
Set the period of the total ramp down time
(par. 3-52) where the deceleration torque
is declining smoothly. A large percentage
minimises torque jerks.
3-6* Ramp 3
"
Choosing ramp parameters, see 3-4*.
*
s
3-60 Ramp 3 Type
Option:
*
Linear
S-ramp
Function:
Selects the desired ramp type, depending on
requirements for acceleration/deceleration.
3-61 Ramp 3 Ramp up Time
Range:
0.01 - 3600.00 s
Function:
The ramp-up time is the acceleration time from
0 RPM to the rated motor speed n
1-25). The output current cannot reach the
torque limit (set in par. 4-16 ). The value 0.00
50%
corresponds to 0.01 s in speed mode.
3-62 Ramp 3 Ramp down Time
Range:
50%
0.01 - 3600.00 s
Function:
The ramp-down time is the deceleration time from
the rated motor speed n
*
50%
*
50%
[0]
[1]
(par.
M,N
(par. 1-25) to 0 RPM.
M,N
*
s
*
s