Danfoss VLT Decentral Drive FCD 302 Operating Manual page 54

Appendix
NOTICE
It is important to set motor parameter group 1-2* Motor
Data correctly, since these parameters form part of the
AMA algorithm. An AMA must be performed to achieve
optimum dynamic motor performance. Depending on
the power rating of the motor, it takes up to 10 minutes
NOTICE
Avoid generating external torque during AMA, by discon-
necting the motor shaft from the application.
NOTICE
If 1 of the settings in parameter group 1-2* Motor Data is
changed, parameter 1-30 Stator Resistance (Rs) to
parameter 1-39 Motor Poles, the advanced motor
parameters return to default setting.
3-02 Minimum Reference
Range:
8 8
Size [ -999999.999 -
related par. 3-03
*
ReferenceFeed-
backUnit]
3-03 Maximum Reference
Range:
Size [ par. 3-02 -
related 999999.999
*
ReferenceFeed-
backUnit]
52
®
VLT Decentral Drive FCD 302
Function:
Enter the minimum reference. The
minimum reference is the lowest
value obtainable by summing all
references.
Minimum reference is active only
when parameter 3-00 Reference Range
is set to [0] Min.- Max.
The minimum reference unit matches:
•
The configuration of
parameter 1-00 Configuration
Mode: for [1] Speed closed
loop, RPM; for [2] Torque,
Nm.
•
The unit selected in
parameter 3-01 Reference/
Feedback Unit.
If option [10] Synchronization is
selected in parameter 1-00 Configu-
ration Mode, this parameter defines
the maximum speed deviation when
performing the position offset
defined in parameter 3-26 Master
Offset.
Function:
Enter the maximum reference. The
maximum reference is the highest
value obtainable by summing all
references.
The maximum reference unit
matches:
•
The configuration selected
in parameter 1-00 Configu-
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3-03 Maximum Reference
Range: Function:
•
If [9] Positioning is selected in
parameter 1-00 Configuration Mode,
this parameter defines the default
speed for positioning.
3-41 Ramp 1 Ramp Up Time
Range: Function:
Size [ 0.01 - Enter the ramp-up time, that is the
related 3600 s] acceleration time from 0 RPM to the
*
synchronous motor speed n
up time which prevents the output current
from exceeding the current limit in
parameter 4-18 Current Limit during ramping.
The value 0.00 corresponds to 0.01 s in
speed mode. See ramp-down time in
parameter 3-42 Ramp 1 Ramp Down Time.
Par . 3 − 41 =
3-42 Ramp 1 Ramp Down Time
Range: Function:
Size [ 0.01 - Enter the ramp-down time, that is the
related 3600 s] deceleration time from the synchronous
*
motor speed n
down time such that no overvoltage occurs
in the inverter due to regenerative operation
of the motor, and such that the generated
current does not exceed the current limit set
in parameter 4-18 Current Limit. The value
0.00 corresponds to 0.01 s in speed mode.
See ramp-up time in parameter 3-41 Ramp 1
Ramp Up Time.
Par . 3 − 42 =
ration Mode: For [1] Speed
closed loop, RPM; for [2]
Torque, Nm.
The unit selected in
parameter 3-00 Reference
Range.
. Select a ramp-
S
t s x n RPM
acc s
ref RPM
to 0 RPM. Select a ramp-
s
t s x n RPM
dec s
ref RPM
MG04F502