Motor Speed High Limit; Torque Limit Motor Mode; Torque Limit Generator Mode; Current Limit - Danfoss VLT Programming Manual

®
VLT HVAC Drive Programming Guide
NB!
Any changes in par. 4-13
in par. 4-13 Motor Speed High Limit [RPM]
4-14 Motor Speed High Limit [Hz]
Range:
Application [Application dependant]
dependent*
NB!
Max. output frequency cannot exceed 10% of the inverter switching frequency (par. 14-01

4-16 Torque Limit Motor Mode

Range:
Application [Application dependant]
dependent*

4-17 Torque Limit Generator Mode

Range:
100.0 %* [Application dependant]

4-18 Current Limit

Range:
Application [Application dependant]
dependent*
4-19 Max Output Frequency
Range:
Application [1.0 - 1000.0 Hz]
dependent*
Motor Speed High Limit [RPM] will reset the value in par. 4-53
.
Function:
Enter the maximum limit for motor speed. The Motor Speed High Limit can be set to correspond to
the manufacturer's recommended maximum of the motor shaft. The Motor Speed High Limit must
exceed the in par. 4-12 Motor Speed Low Limit [Hz]
[RPM] or par. 4-12 Motor Speed Low Limit [Hz]
the Main Menu and depending on default settings dependant on global location.
Function:
Enter the maximum torque limit for motor operation. The torque limit is active in the speed range
up to and including the rated motor speed set in par. 1-25
motor from reaching the stalling torque, the default setting is 1.1 x the rated motor torque (calcu-
lated value). See also par. 14-25
If a setting in par. 1-00
par. 4-16 Torque Limit Motor Mode
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
par. 14-25 Trip Delay at Torque Limit
If a setting in par. 1-00
Torque Limit Generator Mode
par. 4-17
Function:
Enter the current limit for motor and generator operation. To protect the motor from reaching the
stalling torque, the default setting is 1.1 x the rated motor current (set in par. 1-24
rent
). If a setting in par. 1-00
Torque Limit Motor Mode
par. 4-16
default settings.
Function:
Enter the maximum output frequency value. Par. 4-19
limit on the frequency converter output frequency for improved safety in applications where acci-
dental over-speeding must be avoided. This absolute limit applies to all configurations and is
independent of the setting in par. 1-00
while the motor is running.
MG.11.C9.02 - VLT ® is a registered Danfoss trademark
Warning Speed High
. Only par. 4-11
will be displayed depending on other parameters in
Switching Frequency
Motor Nominal Speed
Trip Delay at Torque Limit for further details.
Configuration Mode to par. 1-28 Motor Rotation Check
is not automatically reset to the default setting.
for further details.
Configuration Mode Motor Rotation Check
to par. 1-28
is not automatically reset to the default settings.
Configuration Mode
to par. 1-28
Current Limit
to par. 4-18
Max Output Frequency
Configuration Mode . This parameter cannot be adjusted
3 Parameter Description
to the same value as set
Motor Speed Low Limit
).
. To protect the
is changed,
Motor Nominal Speed ). Refer to
is changed,
Motor Cur-
Motor Rotation Check
is changed,
are not automatically reset to the
specifies the absolute
3
73