Danfoss FC 300 Design Manual page 237

FC 300 Design Guide
Operation under severe line 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).
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:
*
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 reset,
the frequency converter can be restarted.
Select Manual reset [0], to perform a reset via
[RESET] or via the digital inputs.
Select Automatic reset x 1...x20 [1]-[12] to
perform between one and twenty automatic
resets after tripping.
Select Infinite Automatic Reset [13] for continuous
resetting after tripping.
NOTE
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.
* default setting ( )
How to Program
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
display text [ ] value for use in communication via serial communication port
MG.33.B6.22 - VLT is a registered Danfoss trademark
14-21 Automatic Restart Time
Range:
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
Option:
*
Normal operation
Control card test
Initialization
Function:
Use this parameter to specify normal operation;
to perform tests; or to initialise all parameters
except par. 15-03, 15-04 and 15-05. This
function is active only when the power is cycled
to the frequency 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 voltage. The test requires a test connector
with internal connections. Use the following
procedure for the control card test:
Select Control card test [1].
1.
Disconnect the mains supply and wait for
2.
the light in the display to go out.
Set switches S201 (A53) and S202
3.
(A54) = 'ON' / I.
Insert the test plug (see below).
4.
Connect to mains supply.
5.
Carry out various tests.
6.
The results are displayed on the LCP and the
7.
frequency converter moves into an infinite loop.
8. Par. 14-22 is automatically set to Normal
operation. Carry out a power cycle to start up
in Normal operation after a control card test.
If the test is OK:
LCP read-out: Control Card OK.
Disconnect the mains supply and remove the test
plug. The green LED on the Control Card will light up.
If the test fails:
*
10s
[0]
[1]
[2]
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