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2 Parameter Description
14-25 Trip Delay at Torque Limit
Range:
60 s*
[0 - 60 s]
2
14-26 Trip Delay at Inverter Fault
Range:
Application
[0 - 35 s]
dependent*
14-29 Service Code
Range:
0*
[-2147483647 - 2147483647 ]
2.13.5 14-3*Current Limit Control
The frequency converter features an integral Current Limit Controller which is activated when the motor current, and thus the torque, is higher than the
torque limits set in par. 4-16 and 4-17.
When the current limit is reached during motor operation or regenerative operation, the frequency converter will try to reduce torque below the preset
torque limits as quickly as possible without losing control of the motor.
While the current control is active, the frequency converter can only be stopped by setting a digital input to
Any signal on terminals 18 to 33 will not be active until the frequency converter is no longer near the current limit.
By using a digital input set to
is coasted.
14-30 Current Lim Ctrl, Proportional Gain
Range:
100 %*
[5 - 500 %]
14-31 Current Lim Ctrl, Integration Time
Range:
0.020 s*
[0.002 - 2.000 s]
14-32 Current Lim Ctrl, Filter Time
Range:
27.0 ms*
[1.0 - 100.0 ms]
162
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Function:
Enter the torque limit trip delay in seconds. When the output torque reaches the torque limits
Torque Limit Motor Mode
(par. 4-16
triggered. When the torque limit warning has been continuously present for the period specified in
this parameter, the frequency converter trips. Disable the trip delay by setting the parameter to 60
s = OFF. Thermal frequency converter monitoring will still remain active.
Function:
When the frequency converter detects an over-voltage in the set time trip will be effected after the
set time.
Function:
Service use only.
Coast inverse
[2] or
Coast and reset inv.
Function:
Enter the proportional gain value for the current limit controller. Selection of a high value makes
the controller react faster. Too high a setting leads to controller instability.
Function:
Controls the current limit control integration time. Setting it to a lower value makes it react faster.
A setting too low leads to control instability.
Function:
MG.20.W1.22 - VLT is a registered Danfoss trademark
Torque Limit Generator Mode
and par. 4-17
Coast inverse
[3], the motor does not use the ramp-down time, since the frequency converter
VLT Automation VT Drive FC322
Programming Guide
), a warning is
[2] or
Coast and reset inv.
[3].
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