14-22 Operation Mode
Option:
Function:
Select
Initialization
[2] to reset all parameter
values to default settings, except for
, and
. The adjustable frequency drive
will reset during the next power-up.
will also revert to the
default setting
Normal operation
[0].
[0]
*
Normal
operation
[1]
Control
card test
[2]
Initialization
[3]
Boot mode
14-24 Trip Delay at Current Limit
Range:
Function:
60 s
*
[0 - 60
s]
Enter the current limit trip delay in seconds. When
the output current reaches the current limit
), a warning is triggered. When
the current limit warning has been continuously
present for the period specified in this parameter,
the adjustable frequency drive trips. Disable the
trip delay by setting the parameter to 60 s = OFF.
Thermal monitoring of the adjustable frequency
drive will still remain active.
14-25 Trip Delay at Torque Limit
Range:
Function:
60 s
*
[0 - 60
s]
Enter the torque limit trip delay in seconds. When
the output torque reaches the torque limits
(
), a warning is triggered.
When the torque limit warning has been contin-
uously present for the period specified in this
parameter, the adjustable frequency drive trips.
Disable the trip delay by setting the parameter to
60 s = OFF. Thermal monitoring of the adjustable
frequency drive will still remain active.
14-26 Trip Delay at Inverter Fault
Range:
Function:
Application
dependent
*
[0 - 35
s]
When the adjustable frequency drive
detects an overvoltage in the set time,
tripping will be affected after the set
time.
If value = 0,
protection mode
is disabled
NOTE!
It is recommended to disable
protection mode
in hoisting
applications.
14-29 Service Code
Range:
Function:
0
*
[-2147483647 - 2147483647 ]
For internal service only.
3.15.4 14-3* Current Limit Ctrl.
The adjustable frequency drive 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
and
.
When the current limit is reached during motor operation or
regenerative operation, the adjustable frequency drive 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 adjustable frequency
drive 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 adjustable frequency
drive 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 adjustable frequency drive 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.
Parameter Descriptions
FC 300 Programming Guide
MG.33.MA.22 - VLT
®
is a registered Danfoss trademark
3-123
3
3
