•
•
•
•
•
•
Parameter 1-47 Torque Calibration
.
Parameter 1-58 Flying Start Test Pulses Current
.
Parameter 1-59 Flying Start Test Pulses Frequency
.
Parameter 1-70 Start Mode
.
Parameter 30-20 High Starting Torque Time [s]
.
Parameter 30-21 High Starting Torque Current [%]
.
N O T I C E
Standard parameters still need configuration (for example
parameter 4-19 Max Output Frequency
).
Table 143: Recommendations for VVC
+
Applications
Application
Settings
Low inertia applications
I
Load
/I
Motor
<5
Increase
parameter 1-17 Voltage Filter Time Const.
by factor 5–10.
Reduce
parameter 1-14 Damping Gain
.
Reduce
parameter 1-66 Min. Current at Low Speed
(<100%).
Low inertia applications
50>I
Load
/I
Motor
>5
Keep calculated values.
High inertia applications
I
Load
/I
Motor
> 50
Increase
parameter 1-14 Damping Gain
,
parameter 1-15 Low Speed Filter Time Const.
,
and
parameter 1-16 High Speed Filter Time Const.
High load at low speed <30% (rated
speed)
Increase
parameter 1-17 Voltage filter time const
. Increase
parameter 1-66 Min. Current
at Low Speed
(>100% for longer time can overheat the motor).
If the motor starts oscillating at a certain speed, increase
parameter 1-14 Damping Gain
. Increase the value in small steps. Depending
on the motor, a good value for this parameter can be 10% or 100% higher than the default value.
Adjust starting torque in
parameter 1-66 Min. Current at Low Speed
. 100% provides nominal torque as starting torque.
Table 144: Recommendations for Flux Applications
Application
Settings
Low inertia applications
Keep calculated values.
High inertia applications
Parameter 1-66 Min. Current at Low Speed.
Increase speed to a value between default and maximum
depending on application. Set ramp times matching the application. Too fast ramp-up causes an
overcurrent/overtorque. Too fast ramp-down causes an overvoltage trip.
High load at low speed
Parameter 1-66 Min. Current at Low Speed.
Increase speed to a value between default and maximum
depending on application.
Adjust starting torque in
parameter 1-66 Min. Current at Low Speed
. 100% provides nominal torque as starting torque.
4.3 Parameter Group 2-** Brakes
4.3.1 2-0* DC Brakes
Parameter group for configuring the DC brake and DC hold functions.
AU373327181955en-000101 / 130R1208
96 | Danfoss A/S © 2021.08
Parameter Descriptions
VLT® AutomationDrive EZ FC 321
Programming Guide