Danfoss VLT AutomationDrive FC 301 Programming Manual page 89

Parameter Descriptions
3.5.8 4-9* Directional Limits
The directional limits functionality allows to specify
different torque and speed limits for different
combinations of torque application direction and rotation
direction. For example, see Illustration 3.34. In the
illustration, quadrants 1–4 show different combinations of
rotation direction and torque application direction, and the
parameters that act in different quadrants.
n
par. 4-91,
n par. 4-92
T
Braking
2 1
3 4
par. 4-93,
par. 4-94
n
T
Driving
Illustration 3.34 Directional Limits
A speed limit value cannot exceed the value of
parameter 4-13 Motor Speed High Limit [RPM] or
parameter 4-14 Motor Speed High Limit [Hz]. A torque limit
value cannot exceed the value of parameter 4-16 Torque
Limit Motor Mode or parameter 4-17 Torque Limit Generator
Mode.
4-90 Directional Limit Mode
Select whether the directional limits are enabled. With directional
limits enabled, it is possible to specify different speed and torque
limits for clockwise and counterclockwise rotation directions.
Option:
[0] Disabled
*
[1] Speed
[2] Torque
[3] Speed and Torque
MG33MO02
Programming Guide
n
T
Driving
T
n
T
Braking
Function:
Directional limits are
disabled.
Directional limits are active
for the speed values.
Directional limits are active
for the torque values.
Directional limits are active
for both, torque and speed
values.
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4-91 Positive Speed Limit [RPM]
Range:
Size related [ 0 - par. 4-13
*
RPM]
4-92 Positive Speed Limit [Hz]
Range:
Size related [ 0 - par. 4-14
*
Hz]
4-93 Negative Speed Limit [RPM]
Range:
Size related [ 0 - par. 4-13
*
RPM]
4-94 Negative Speed Limit [Hz]
Range:
Size related [ 0 - par. 4-14
*
Hz]
4-95 Positive Torque limit
Range: Function:
Size related [ 0 - 160.0 %] Enter the limit for the motor torque
*
when the rotation direction is
clockwise.
4-96 Negative Torque limit
Range: Function:
Size related [ 0 - 160.0 %] Enter the limit for the motor torque
*
when the rotation direction is
counterclockwise.
Function:
Enter the limit for the motor
speed when the rotation
direction is clockwise.
Function:
Enter the limit for the motor
speed when the rotation
direction is clockwise.
Function:
Enter the limit for the motor
speed when the rotation
direction is counterclockwise.
Function:
Enter the limit for the motor
speed when the rotation
direction is counterclockwise.
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3 3