Danfoss VLT AutomationDrive FC 360 Programming Manual page 104

Parameter Descriptions
14-10 Mains Failure
Option:
[6] Alarm
[7] Kin.
back-up,
trip w
recovery
4 4
14-11 Mains Fault Voltage Level
Range:
342 [100 -
V 800 V]
*
14-12 Response to Mains Imbalance
Option:
[0] Trip
*
[1] Warning Issues a warning.
[2] Disabled No action is taken.
[3] Derate
14-15 Kin. Back-up Trip Recovery Level
Range:
Size related
*
FeedbackUnit]
102
Function:
Kinetic back-up with recovery combines the
features of kinetic back-up and kinetic back-up
with trip. This feature makes it possible to select
between kinetic back-up and kinetic back-up with
trip based on a recovery speed, which is config-
urable in parameter 14-15 Kin. Back-up Trip
Recovery Level to enable detection of mains
returning. If the mains do not return, the
frequency converter ramps down to 0 RPM and
trips. If mains return while kinetic back-up is at a
speed above the value set in parameter 14-15 Kin.
Back-up Trip Recovery Level, normal operation is
resumed. This is equal to [4] Kinetic Back-up. The
DC level during [7] Kinetic back-up is
parameter 14-11 Mains Fault Voltage Level x 1.35. If
mains return while kinetic back-up is at a speed
below parameter 14-15 Kin. Back-up Trip Recovery
Level, the frequency converter ramps down to 0
RPM using the ramp and then trips.
Function:
This parameter defines the threshold voltage at
which the selected function in
parameter 14-10 Mains Failure is activated. Based
on the supply quality, consider to select 90% of
the nominal mains as the detection level. For a
supply of 380 V, parameter 14-11 Mains Fault
Voltage Level should be set to 342 V. This results
in a DC detection level of 462 V
(parameter 14-11 Mains Fault Voltage Level x
1.35).
Function:
Operation under severe mains imbalance
conditions reduces the lifetime of the motor.
Conditions are considered severe if the motor is
operated continuously near nominal load (for
example, a pump or fan running near full speed).
Trips the frequency converter.
Derates the frequency converter.
Function:
[0 - 500.000 Reference- This parameter specifies
the kinetic back-up trip
recovery level.
Danfoss A/S © 06/2017 All rights reserved.
®
VLT AutomationDrive FC 360
4.13.3 14-2* Trip Reset
Parameters for configuring auto reset handling, special trip
handling, and control card self test, or initialization.
14-20 Reset Mode
Option:
[0] Manual reset
*
Function:
WARNING
UNINTENDED START
When the frequency converter is
connected to AC mains, DC supply,
or load sharing, the motor may
start at any time. Unintended start
during programming, service, or
repair work can result in death,
serious injury, or property damage.
The motor can start via an external
switch, a fieldbus command, an
input reference signal from the LCP,
or after a cleared fault condition.
To prevent unintended motor start:
•
Disconnect the frequency
converter from the mains.
•
Press [Off/Reset] on the
LCP before programming
parameters.
•
Fully wire and assembly
the frequency converter,
motor, and any driven
equipment before
connecting the frequency
converter to AC mains, DC
supply, or load sharing.
NOTICE
If the specified number of
automatic resets is reached within
10 minutes, the frequency
converter enters [0] Manual reset
mode. After the manual reset is
performed, the setting of
parameter 14-20 Reset Mode reverts
to the original selection. If the
number of automatic resets is not
reached within 10 minutes, or
when a manual reset is performed,
the internal automatic reset
counter returns to 0.
Select the reset function after tripping.
Once reset, the frequency converter can
be restarted.
Select [0] Manual reset, to perform a
reset via [Reset] or via the digital inputs.
MG06C702