Danfoss FC 300 Design Manual page 219

FC 300 Design Guide
Function:
This parameter defines the threshold voltage se-
lected function in par. 14-10 should be activated.
14-12 Function at Mains Imbalance
Value:
Trip
Warning
Disabled
Function:
When a severe mains imbalance is detected:
Select Trip [0] to trip the frequency converter;
Select Warning [1] to issue a warning; or
Select Disabled [2] for no action.
Operation under severe main imbalance condi-
tions 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).
14-2* Trip Reset
Parameters for configuring auto reset handling,
special trip handling and control card self test or
initialisation.
14-20 Reset Mode
Value:
Manual reset
Automatic reset x 1
Automatic reset x 2
Automatic reset x 3
Automatic reset x 4
Automatic reset x 5
Automatic reset x 6
Automatic reset x 7
Automatic reset x 8
Automatic reset x 9
Automatic reset x 10
Automatic reset x 15
Automatic reset x 20
Infinite Automatic Reset
Function:
Select the reset function after tripping. Once re-
set, the frequency converter can be restarted.
factory setting
How to Programme
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MG.33.B7.02 - VLT is a registered Danfoss trademark
Select Manual reset [0], to perform a reset via
[RESET] or via the digital inputs.
Select Automatic reset x 1...x20 [1]-[12] to per-
form between one and twenty automatic resets
after tripping.
Select Infinite Automatic Reset [13] for continu-
ous resetting after tripping.
NB!
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 par. 14-20
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.
The motor may start without warning.
14-21 Automatic Restart Time
Value:
0 - 600 s
Function:
Enter the time interval from trip to start of the
automatic reset function. This parameter is active
when par. 14-20 is set to Automatic reset [1] -
[13].
14-22 Operation Mode
Value:
Normal operation
Control card test
Initialisation
Function:
Use this parameter to specify normal operation;
to perform tests; or to initialise all parameters ex-
cept par. 15-03, 15-04 and 15-05. This function is
active only when the power is cycled to the fre-
quency converter.
Select Normal operation [0] for normal operation
of the frequency converter with the motor in the
selected application.
Select Control card test [1] to test the analog and
digital inputs and outputs and the +10 V control
value for use in communication via serial communication port
10s
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