Danfoss VLT FC 100 Series Programming Manual page 119

Parameter Description
14-12 Function at Mains Imbalance
Option:
3 3
[0] Trip
*
[1] Warning Select Warning [1] to issue a warning.
[2] Disabled Select Disabled [2] for no action.
[3] Derate
Parameters for configuring auto reset handling, special trip
handling and control card self test or initialization.
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
NOTE!
Automatic reset will also be active for resetting safe stop
function.
3-92
VLT
Function:
Operating under severe line imbalance conditions
reduces the lifetime of the motor. Conditions are
considered severe if the motor operates contin-
uously near nominal load (such as when a pump
or fan runs near full speed).
When a severe line imbalance is detected:
Select Trip [0] to trip the Adjustable frequency
drive.
Select Derate [3] for derating the Adjustable
frequency drive.
Function:
Select the reset function after
tripping. Once reset, the Adjustable
frequency drive 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.
MG11CD22 - VLT
®
HVAC Drive Programming Guide
NOTE!
The setting in 14-20 Reset Mode is disregarded if fire mode
is active (see parameter group 24-0* Fire Mode).
14-21 Automatic Restart Time
Range:
10 s [0 - 600 s] Enter the time interval from trip to start of
*
14-22 Operation Mode
Option:
[0] Normal
operation
*
[1] Control
card test
® is a registered Danfoss trademark
Function:
the automatic reset function. This parameter
is active when 14-20 Reset Mode is set to
Automatic reset [1] - [13].
Function:
Use this parameter to specify normal operation,
to perform tests or to initialize all parameters
except 15-03 Power-ups, 15-04 Over Temps and
15-05 Over Volts. This function is active only
when the power is cycled (power off/power on)
to the Adjustable frequency drive.
Select Normal operation [0] for normal operation
of the adjustable frequency drive 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:
1. Select Control card test [1].
2. Disconnect the line power supply and
wait for the light in the display to go
out.
3. Set switches S201 (A53) and S202
(A54) = 'ON' / I.
4. Insert the test plug (see below).
5. Connect to the line power supply.
6. Carry out various tests.
7. The results are displayed on the LCP
and the Adjustable frequency drive
moves into an infinite loop.
8. 14-22 Operation Mode 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 readout: Control Card OK.
Disconnect the line power supply and remove
the test plug. The green LED on the control
card will light up.