Danfoss VLT AutomationDrive FC 300 Series Programming Manual page 133

Parameter Descriptions
14-10 Mains Failure
Option:
3 3
14-11 Mains Voltage at Mains Fault
Range:
Size [180 -
related 600 V]
*
14-12 Function at Mains Imbalance
Operation under severe main imbalance conditions reduces the
lifetime of the motor. Conditions are considered severe if the
motor is operated continuously near nominal load (e.g. a pump
or fan running near full speed).
Option:
[0]
*
[1]
[2]
14-14 Kin. Backup Time Out
Range:
60 s [0 - 60
*
s]
132
VLT
Function:
A = Normal Operation D = Mains return
B = Mains failure E = Kinetic back-up
ramping to trip
C Kinetic back-up F = Trip
Table 3.27
Function:
This parameter defines the threshold voltage
at which the selected function in
14-10 Mains Failure should be activated. It
may be considered to choose 90% of the
nominal mains as the detection level,
depending on the supply quality. For a
supply of 380 V 14-11 Mains Voltage at Mains
Fault should thus be set to 342 V. This
results in a DC detection level of 462 V
(14-11 * 1.35)
NOTE
Note for converting between VLT 5000
and FC 300:
Even though the setting of the Mains
Voltage at Mains Fault is the same for
VLT 5000 and FC 300, the detection
level is different. Use the following
formula to obtain the same detection
level as in VLT 5000: 14-11 Mains
Voltage at Mains Fault (VLT 5000 level) =
Value used in VLT 5000 * 1,35/sqrt(2).
Function:
Trip Trips the frequency
converter
Warning Issues a warning
Disabled No action
Function:
This parameter defines the Kinetic Backup Time
Out in flux mode when running on low voltage
grids. If the supply voltage does not increase
above the value defined in 14-11 Mains Voltage
at Mains Fault +5% within the specified time,
the drive will then automatically run a
controlled ramp-down profile prior to stop.
MG33ME02 - VLT
®
AutomationDrive Programmming Guide
14-15 Kin. Backup Trip Recovery Level
Range:
Size related
*
Parameters for configuring auto reset handling, special trip
handling and control card self test or initialisation.
14-20 Reset Mode
Option:
[0] Manual reset
*
[1] Automatic reset x 1
[2] Automatic reset x 2
[3] Automatic reset x 3
[4] Automatic reset x 4
[5] Automatic reset x 5
[6] Automatic reset x 6
[7] Automatic reset x 7
[8] Automatic reset x 8
[9] Automatic reset x 9
[10] Automatic reset x 10
[11] Automatic reset x 15
[12] Automatic reset x 20
[13] Infinite auto reset
[14] Reset at power-up
NOTE
The motor may start without warning. If the specified
number of AUTOMATIC RESETs is reached within 10
minutes, the frequency converter enters Manual reset [0]
mode. After the Manual reset is performed, the setting of
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 zero.
NOTE
Automatic reset will also be active for resetting safe stop
function in firmware version < 4.3x.
®
is a registered Danfoss trademark
Function:
[ 0.000 - 60000.000 This parameter specifies
ReferenceFeedbackUnit] the Kinetic Backup Trip
Recovery Level. The unit
is defined in 0-02 Motor
Speed Unit.
Function:
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.
Select [1]-[12] Automatic reset x 1...
x20 to perform between one and
twenty automatic resets after
tripping.
Select [13] Infinite Automatic Reset for
continuous resetting after tripping.