Danfoss VLT series, Руководство по программированию

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DC Voltage
Output Speed rpm
Over Voltage Control Level
Mains
Time
130B
T101.10
Par 14-11
Illustration 3.4 Controlled Ramp down - short mains failure.
Ramping down to stop followed by ramping up to reference.
Mains
Time
DC Voltage
Output Speed rpm
Over Voltage Control Level
130B
T108.10
Par 14-11
Illustration 3.5 Controlled Ramp down, longer mains failure.
Ramping down as long as the energy in the system allows for it,
then the motor is coasted.
Over Voltage Control Level
DC Voltage
Output Speed rpm
Mains
Time
130B
T100.10
Par 14-11
Illustration 3.6 Kinetic Back-up, short mains failure. Ride through
as long as the energy in the system allows for it.
Mains
Time
DC Voltage
Output Speed rpm
Over Voltage Control Level
130B
T109.10
Par 14-11
Illustration 3.7 Kinetic Back-up, longer mains failure. The motor is
coasted as soon as the energy in the system is too low.
14-11 Mains Voltage at Mains Fault
Range: Function:
Size related
*
[180 - 600
V] This parameter defines the threshold
voltage at which the selected
function in
14-10 Mains Failure should
be activated. The detection level is at
a factor sqrt(2) of the value in 14-11.
14-12 Function at Mains Imbalance
Option: Function:
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).
When a severe mains imbalance is detected:
[0]
*
Trip Select Trip [0] to trip the frequency converter.
14-12 Function at Mains Imbalance
Option: Function:
[1] Warning Select Warning [1] to issue a warning.
[2] Disabled Select Disabled [2] for no action.
[3] Derate Select Derate [3] for derating the frequency
converter.
Parameters for configuring auto reset handling, special trip
handling and control card self test or initialisation.
14-20 Reset Mode
Option: Function:
Select the reset function after
tripping. Once reset, the frequency
converter can be restarted.
[0]
*
Manual reset Select Manual reset [0], to perform a
reset via [RESET] or via the digital
inputs.
[1] Automatic reset x 1 Select Automatic reset x 1…x20 [1]-
[12] to perform between one and
twenty automatic resets after
tripping.
[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
Select Infinite Automatic Reset [13] for
continuous resetting after tripping.
NOTE
Automatic reset will also be active for resetting safe stop
function.
NOTE
The setting in 14-20 Reset Mode is disregarded in case of
Fire Mode being active (see parameter group 24-0*, Fire
Mode).
14-21 Automatic Restart Time
Range: Function:
10 s
*
[0 - 600 s] Enter the time interval from trip to start of
the automatic reset function. This parameter
is active when
14-20 Reset Mode is set to
Automatic reset [1] - [13].
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG.11.CC.02 - VLT
®
is a registered Danfoss trademark 109
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