Operating instructions

NOTE
Max. output frequency cannot exceed 10% of the
inverter switching frequency (par. 14-01 Switching
Frequency).
4-16 Torque Limit Motor Mode
Range: Function:
Applica-
tion
depend-
ent
*
[Applica-
tion
depend-
ant]
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 Nominal Speed. To protect
the motor from reaching the stalling
torque, the default setting is 1.1 x the
rated motor torque (calculated value). See
also par. 14-25 Trip Delay at Torque Limit
for further details.
If a setting in par. 1-00 Configuration
Mode to par. 1-28 Motor Rotation Check is
changed, par. 4-16 Torque Limit Motor
Mode is not automatically reset to the
default setting.
4-17 Torque Limit Generator Mode
Range: Function:
100.0
%
*
[Applica-
tion
dependant]
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 Motor Nominal Speed). Refer to
par. 14-25 Trip Delay at Torque Limit for
further details.
If a setting in par. 1-00 Configuration Mode
to par. 1-28 Motor Rotation Check is
changed, par. 4-17 Torque Limit Generator
Mode is not automatically reset to the
default settings.
4-18 Current Limit
Range: Function:
Applica-
tion
depend-
ent
*
[Applica-
tion
depend-
ant]
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 Motor
Current). If a setting in par. 1-00 Configu-
ration Mode to par. 1-28 Motor Rotation
Check is changed, par. 4-16 Torque Limit
Motor Mode to par. 4-18 Current Limit are
not automatically reset to the default
settings.
4-19 Max Output Frequency
Range: Function:
Applica-
tion
depend-
ent
*
[1.0 -
1000.0
Hz]
Enter the maximum output frequency
value. Par. 4-19 Max Output Frequency
specifies the absolute limit on the frequen-
cy converter output frequency for
improved safety in applications where
accidental over-speeding must be avoided.
This absolute limit applies to all configura-
tions and is independent of the setting in
par. 1-00 Configuration Mode. This parame-
ter cannot be adjusted while the motor is
running.
3.6.2 4-5* Adj. Warnings
Define adjustable warning limits for current, speed, reference
and feedback.
NOTE
Not visible in display, only in VLT Motion Control Tool,
MCT 10.
Warnings are shown on display, programmed output or serial
bus.
4-50 Warning Current Low
Range: Function:
0.00 A * [Application
dependant]
Enter the I
LOW
value. When the motor
current falls below this limit (I
LOW
), the
display reads CURRENT LOW. The signal
outputs can be programmed to produce a
status signal on terminal 27 or 29 and on
relay output 01 or 02. Refer to the drawing
in this section.
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG.11.CA.02 - VLT
®
is a registered Danfoss trademark 55
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