Actual signals and parameters
69
MASTER DRV Follows the speed reference of the master drive. 8
MSTR PSEUDO Follows 03.16 PSEUDO SPD OUT of the master drive. 9
PARAM 11.12 Source selected by 11.12 EXT 1 REF PTR. 10
11.04 EXT1 REF MINIMUM Defines the minimum value for external reference 1 (absolute value).
Corresponds to the minimum setting of the used source signal.
Example: Analog input AI1 is selected as the reference source (value
of 11.03 EXT1 REF SELECT is AI1). The reference minimum and
maximum correspond the AI minimum and maximum settings as
above.
0…18000 rpm Setting range in rpm. 1 = 1 rpm
11.05 EXT1 REF MAXIMUM EXT1 REF MAXIMUM may be calculated from the formula shown
below. However, it is strongly advised to reconfirm the calculated
value during the startup.
A procedure to experimentally reconfirm parameter 11.05 is described
in steps 1…7.
Parameter 11.05 defines the maximum rotational speed in rpm for the
winder at minimum core diameter. This parameter is used as an
intermediate scaling factor to scale the Web Speed or Material speed
to a rotational speed reference for the drive.
Where: L
max
= Maximum Line Speed in ft/min or m/min
D
core
= Minimum Core diameter in ft or m
π = 3.1415
Z = Gear Ratio
Gear Ratio (Z) = N
motor
/ N
shaft
Rotational Speed of Winder:
Calculation of rotational speed reference from web speed (material
speed) in the control program:
No. Name/Value Description FbEq
1 13.01 MINIMUM AI1
2 10 VDC or 20 mA
1’ 11.04 EXT1 REF MINIMUM
2’ 11.05 EXT1 REF MAXIMUM
12
1’
2’
N
motor
N
shaft
AI1 Range
EXT REF1 Range
L
max
x Z
D
core
x π
11.05 (rpm) =
L
act
x Z
D
act
x π
=
Analog Input x L
max
100
=
Z
D
act
x π
x
Analog Input x 11.05 x
π x D
core
100 x Z
=
Z
D
act
x π
x
Analog Input x 11.05
100
=
D
core
D
act
x
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