Danfoss FC 300 Programming Manual page 138

Parameter Descriptions
14-22 Operation Mode
Option:
3 3
[0] Normal
*
operation
[1] Control card
test
[2] Initialisation
[3] Boot mode
14-24 Trip Delay at Current Limit
Range:
60 s [0 - 60
*
s]
138
FC 300 Programming Guide
Function:
on. Test plugs (connect the following terminals
to each other): 18 - 27 - 32; 19 - 29 - 33; 42 - 53 -
54
Select Initialization [2] to reset all parameter
values to default settings, except for
par. 15-03 Power Up's, par. 15-04 Over Temp's,
and par. 15-05 Over Volt's. The frequency
converter will reset during the next power-up.
Par. 14-22 Operation Mode will also revert to the
default setting Normal operation [0].
Function:
Enter the current limit trip delay in seconds. When
the output current reaches the current limit
(par. 4-18 Current Limit), a warning is triggered.
When the current limit warning has been continu-
ously 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 monitoring of the frequency convert-
er will still remain active.
MG.33.M9.02 - VLT
14-25 Trip Delay at Torque Limit
Range: Function:
60 s [0 - 60 Enter the torque limit trip delay in seconds. When
*
s] the output torque reaches the torque limits
(par. 4-16 Torque Limit Motor Mode and
par. 4-17 Torque Limit Generator Mode), a warning is
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 monitoring of the frequency convert-
er will still remain active.
14-26 Trip Delay at Inverter Fault
Range:
Application [0 - 35
dependent s]
*
14-29 Service Code
Range:
0 [-2147483647 - 2147483647 ]
*
3.15.4 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.
®
is a registered Danfoss trademark
Function:
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
NOTE
It is recommended to disable
protection mode in hoisting
applications.
Function:
For internal service only.