Danfoss VLT AutomationDrive FC 300, Руководство по программированию

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1-64 Resonance Dampening
Range: Function:
100 %
*
[0 - 500
%] Enter the resonance dampening value. Set
1-64 Resonance Dampening and
1-65 Resonance Dampening Time Constant to
help eliminate high-frequency resonance
problems. To reduce resonance oscillation,
increase the value of
1-64 Resonance
Dampening .
1-65 Resonance Dampening Time Constant
Range: Function:
5 ms
*
[5 - 50 ms] Set 1-64 Resonance Dampening and
1-65 Resonance Dampening Time Constant to
help eliminate high-frequency resonance
problems. Enter the time constant that
provides the best dampening.
1-66 Min. Current at Low Speed
Range: Function:
100
%
*
[Application
dependant] Enter the minimum motor current at low
speed, see
1-53 Model Shift Frequency .
Increasing this current improves motor
torque at low speed.
1-66 Min. Current at Low Speed is enabled
when 1-00 Configuration Mode = Speed open
loop [0] only. The frequency converter runs
with constant current through motor for
speeds below 10Hz.
For speeds above 10Hz, the motor flux
model in the frequency converter controls
the motor.
4-16 Torque Limit Motor Mode
and / or 4-17 Torque Limit Generator Mode
automatically adjust 1-66 Min. Current at
Low Speed . The parameter with the highest
value adjusts 1-66 Min. Current at Low Speed .
The current setting in 1-66 Min. Current at
Low Speed is composed of the torque
generating current and the magnetizing
current.
Example: Set
4-16 Torque Limit Motor Mode
to 100% and set 4-17 Torque Limit Generator
Mode to 60%. 1-66 Min. Current at Low Speed
automatically adjusts to about 127%,
depending on the motor size.
FC 302 only.
1-67 Load Type
Option: Function:
[0]
*
Passive load For conveyers, fan and pump applications.
[1] Active load For hoisting applications, used in slip compen-
sation at low speed. When
Active Load [1] is
selected, set 1-66 Min. Current at Low Speed to a
level which corresponds to maximum torque.
FC 302 only.
1-68 Minimum Inertia
Range: Function:
Application
dependent
*
[Application
dependant] Needed for average inertia
calculation. Enter the minimum
moment of inertia of the
mechanical system.
1-68 Minimum
Inertia and 1-69 Maximum Inertia
are used for pre-adjustment of the
Proportional Gain in the speed
control, see
30-83 Speed PID Propor-
tional Gain .
FC 302 only.
This parameter cannot be adjusted while motor is running.
1-69 Maximum Inertia
Range: Function:
Application
dependent
*
[Application
dependant] Active in Flux Open Loop only.
Used to compute the
acceleration torque at low
speed. Used in the torque limit
controller.
FC 302 only.
This parameter cannot be adjusted while motor is running.
3.3.7 1-7* Start Adjustments
1-71 Start Delay
Range: Function:
0.0 s
*
[0.0 - 25.5 s] This parameter refers to the start function
selected in 1-72 Start Function .
Enter the time delay required before
commencing acceleration.
1-72 Start Function
Option: Function:
Select the start function during start delay.
This parameter is linked to
1-71 Start Delay .
[0] DC Hold/
delay time Energizes motor with a DC holding current
(
2-00 DC Hold Current ) during the start delay
time.
[1] DC Brake/
delay time Energizes motor with a DC braking current
(
2-01 DC Brake Current ) during the start delay
time.
[2]
*
Coast/delay
time Motor coasted during the start delay time
(inverter off).
[3] Start speed
cw
Only possible with VVC
plus
.
Connect the function described in 1-74 Start
Speed [RPM] and 1-76 Start Current in the start
delay time.
Regardless of the value applied by the
reference signal, the output speed applies the
setting of the start speed in
1-74 Start Speed
Parameter Descriptions FC 300 Programming Guide
MG.33.MB.02 - VLT
®
is a registered Danfoss trademark 41
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