6.5 Parameters: 4-** Limits/Warnings
6.5.1 4-1* Motor Limits
Define torque, current and speed limits for the motor, and
the reaction of the frequency converter when the limits are
exceeded.
A limit may generate a message on the display. A warning
will always generate a message on the display or on the
fieldbus. A monitoring function may initiate a warning or a
trip, upon which the frequency converter will stop and
generate an alarm message.
4-20 Torque Limit Factor Source
Option:
Function:
Select an analog input for scaling the
settings in
4-16 Torque Limit Motor
Mode
and
4-17 Torque Limit Generator
Mode
from 0% to 100% (or inverse).
The signal levels corresponding to
0% and 100% are defined in the
analog input scaling, e.g. parameter
group 6-1*. This parameter is only
active when
1-00 Configuration Mode
is in
Speed Open Loop
or
Speed Closed
Loop
.
[0]
*
No function
[2]
Analog in 53
[4]
Analog in 53 inv
[6]
Analog in 54
[8]
Analog in 54 inv
[10] Analog in X30-11
[12] Analog in X30-11
inv
[14] Analog in X30-12
[16] Analog in X30-12
inv
4-21 Speed Limit Factor SourceOption
Option:
Function:
Select an analog input for scaling
the settings in
4-19 Max Output
Frequency
from 0% to 100% (or vice
versa). The signal levels
corresponding to 0% and 100% are
defined in the analog input scaling,
e.g. parameter group 6-1*. This
parameter is only active when
1-00 Configuration Mode
is in
Torque
Mode
.
[0]
*
No function
[2]
Analog input 53
[4]
Analog input 53 inv
[6]
Analog input 54
[8]
Analog input 54 inv
[10] Analog input X30-11
4-21 Speed Limit Factor SourceOption
Option:
Function:
[12] Analog input X30-11
inv
[14] Analog input X30-12
[16] Analog input X30-12
inv
6.5.2 4-5* Adjustable Warnings
Use these parameters to adjust warning limits for current,
speed, reference and feedback. Warnings that are shown
on the display can be programmed as an output or sent
via serial bus.
4-50 Warning Current Low
Range:
Function:
0 A
*
[ 0 - par.
4-51 A]
Enter the I
LOW
value. When the motor current
falls below this limit, 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 .
4-51 Warning Current High
Range:
Function:
Size
related
*
[ par. 4-50
- par. 16-37
A]
Enter the I
HIGH
value. When the motor
current exceeds this limit, the display
reads
Current High
. 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 .
4-52 Warning Speed Low
Range:
Function:
Size
related
*
[ 0 - par.
4-53 RPM]
Enter the n
LOW
value. When the motor
speed exceeds this limit, the display
reads
Speed Low
. The signal outputs
can be programmed to produce a
status signal on terminal 27 or 29 and
on relay output 01 or 02.
4-53 Warning Speed High
Range:
Function:
Size related
*
[ par. 4-52 - par. 4-13 RPM]
4-54 Warning Reference Low
Range:
Function:
-999999.999
*
[ -999999.999 -
par. 4-55 ]
Enter the lower reference limit.
When the actual reference falls
below this limit, the display
indicates
Ref
LOW
. The signal
outputs can be programmed to
produce a status signal on
terminal 27 or 29 and on relay
output 01 or 02.
Parameter Descriptions
Operating Instructions VLT
®
CDS302 and CDS303
MG34M302 - VLT
®
is a registered Danfoss trademark/Commercial Compressor
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