Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual page 48

4 How to Programme
NB!
If one of the settings in par. 1-2* is changed, par. 1-30 to par. 1-39, the advanced motor parameters, will return to default setting.
3-02 Minimum Reference
Range:
Application [Application dependant]
dependent*
4
3-03 Maximum Reference
Range:
Application [Application dependant]
dependent*
3-41 Ramp 1 Ramp up Time
Range:
Application [Application dependant]
dependent*
3-42 Ramp 1 Ramp Down Time
Range:
Application [Application dependant]
dependent*
48
Function:
Enter the Minimum Reference. The Minimum Reference is the lowest value obtainable by summing
all references.
Minimum Reference is active only when par. 3-00
The Minimum Reference unit matches:
• The choice of configuration in par. 1-00
closed loop [1], RPM; for Torque
• The unit selected in par. 3-01
Function:
Enter the Maximum Reference. The Maximum Reference is the highest value obtainable by summing
all references.
The Maximum Reference unit matches:
• The choice of configuration in par. 1-00
Torque
RPM; for [2], Nm.
• The unit selected in par. 3-00
Function:
Enter the ramp-up time, i.e. the acceleration time from 0 RPM to the synchronous motor speed n
Choose a ramp-up time such that the output current does not exceed the current limit in
par. 4-18 Current Limit during ramping. The value 0.00 corresponds to 0.01 sec. in speed mode.
See ramp-down time in par. 3-42 Ramp 1 Ramp Down Time
t acc s x n s RPM
Par
. 3 − 41 =
ref RPM
Function:
Enter the ramp-down time, i.e. the deceleration time from the synchronous motor speed n
RPM. Choose a ramp-down time such that no over-voltage arises in the inverter due to regenerative
operation of the motor, and such that the generated current does not exceed the current limit set
Current Limit
in par. 4-18 . The value 0.00 corresponds to 0.01 s in speed mode. See ramp-up time
Ramp 1 Ramp up Time
in par. 3-41 .
t dec s x n s RPM
Par . 3 − 42 =
ref RPM
®
MG.33.AG.02 - VLT is a registered Danfoss trademark
®
VLT AutomationDrive FC 300 Operating
Reference Range is set to
Configuration Mode Configuration Mode
[2], Nm.
Reference/Feedback Unit
.
Configuration Mode Speed closed loop
: for
Reference Range
.
.
Instructions
Min.- Max. [0].
: for Speed
[1],
.
S
to 0
s