Danfoss VLT AutomationDrive FC 300 Programming Guide

14-26 Trip Delay at Inverter Fault
Range: Function:
Application
dependent*
[0 - 35 s] When the frequency converter detects an over-voltage in the set time trip will be effected after the
set time.
If value = 0,
protection mode is disabled
NB!
It is recommended to disable
protection mode in hoisting applications.
14-29 Service Code
Range: Function:
0* [-2147483647 - 2147483647 ] For internal service only.
3.15.5 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
Torque Limit Motor Mode and par. 4-17 Torque Limit Generator Mode .
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
Coast inverse [2] or Coast and reset inv. [3].
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
Coast inverse [2] or Coast and reset inv. [3], the motor does not use the ramp-down time, since the frequency converter
is coasted. If a quick stop is necessary, use the mechanical brake control function along with an external electro-mechanical brake attached to the
application.
14-30 Current Lim Ctrl, Proportional Gain
Range: Function:
100 %* [0 - 500 %] 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.
14-31 Current Lim Ctrl, Integration Time
Range: Function:
0.020 s* [0.002 - 2.000 s] 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.
14-32 Current Lim Ctrl, Filter Time
Range: Function:
1.0 ms* [1.0 - 100.0 ms]
14-35 Stall Protection
Option: Function:
Select Enable [1] to enable the stall protection in field-weakening in flux mode. Select Disable [0]
if you desire to disable it. This might cause the motor to be lost. Par. 14-35
Stall Protection is active
in Flux mode only.
[0] Disabled
[1] * Enabled
FC 300 Programming Guide 3 Parameter descriptions
MG.33.M8.02 - VLT
®
is a registered Danfoss trademark 201
3

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English