Danfoss FC 300 Design Manual page 188

FC 300 Design Guide
(calculated value). See also par. 14-25 Trip Delay
at Torque Limit for further details.
If a setting in par. 1-00 to par. 1-26 is changed, par.
4-16 is not automatically reset to the default setting.
If par. 4-16 is changed whilst par. 1-00
Configuration Mode is set to Speed
open-loop [0], then par. 1-66 Min Current
at Low Speed will automatically readjust.
4-17 Torque Limit Generator Mode
Range:
0.0 - Variable Limit %
Function:
Enter the maximum torque limit for generator mode
operation. The torque limit is active in the speed
range up to and including the rated motor speed
(par. 1-25). See the illustration for par. 4-16
Torque Limit Motor Mode, and refer to par. 14-25
Trip Delay at Torque Limit for further details.
If a setting in par. 1-00 to par. 1-26 is
changed, par. 4-17 is not automatically reset
to the default settings.
4-18 Current Limit
Range:
0.0 - Variable Limit %
Function:
Enter the current limit for motor and generator
operation. To protect the motor from reaching the
stalling torque, the default setting is 1.6 x the rated
motor torque (calculated value). If a setting in
par. 1-00 to par. 1-26 is changed, par. 4-18 is not
automatically reset to the default setting.
default setting ( ) display text
*
188
How to Program
Enter the maximum output frequency value.
Par. 4-19 specifies the absolute limit on the
drive output frequency for improved safety
in applications where accidental overspeeding
must be avoided. This absolute limit applies
to all configurations and is independent of the
setting in par. 1-00. This parameter cannot be
adjusted while the motor is running.
4-3* Motor Feedback Monitoring
"
This parameter group includes settings for
monitoring and handling of motor feedback devices
such as encoders and resolvers.
*
*
160.0 %
Select the adjustable frequency drive reaction
upon detecting a feedback fault, i.e., when the
feedback signal differs from the output speed
more than specified in par. 4-31 Motor Feedback
Speed Error during the time set in par. 4-32
Motor Feedback Loss Timeout.
Select Disabled [0] if no action is required.
Select Warning [1] to issue a warning only. The
adjustable frequency drive will continue operation.
Select Trip [2] to trip the adjustable frequency drive.
*
160.0 %
Enter the maximum permissible tracking
error between the calculated and the actual
mechanical shaft output speed.
[ ] value for use in communication via serial communication port
MG.33.B6.22 - VLT is a registered Danfoss trademark
4-19 Max Output Frequency
Range:
0.0 - 1000.0 Hz
Function:
4-30 Motor Feedback Loss Function
Option:
Disabled
Warning
Trip
Function:
4-31 Motor Feedback Speed Error
Range:
1-600 RPM
Function:
*
132.0 Hz
[0]
[1]
[2]
*
300 RPM