ABB DCS550 - Page 247

247
Signal and parameter list
3ADW000379R0501 DCS550 Manual e e
Signal / Parameter name
min.
max.
def.
unit
The tension to torque function provides three inputs for tension references and uses them to convert tension into torque
depending on the actual diameter.
Commissioning hint:
For proper calculation following rules apply:
−
Maximum torque (T
max
) is reached with maximum diameter (D
max
), means with a diameter of 100 %.
−
The motor torque - see MotTorqNom (4.23) - must be larger than maximum torque (T
max
).
− The torque scaling is needed, because the tension to torque function works with relative values.
i
DF
T
*2
*
maxmax
max
=
%100*)21.63(
max
Mot
T
T
ScaleTTT =
T
max
[Nm] maximum needed torque
T
Mot
[Nm] nominal motor torque, see MotTorqNom (4.23)
F
max
[N] maximum tension
D
max
[m] maximum diameter
i
gear ratio (motor / load)
Attention:
T
Mot
must be larger than T
max
!
63.18 TTT Ref1In (tension to torque, reference 1 input)
Source (signal/parameter) for tension reference input 1 of tension to torque calculation. The format is
xxyy,
with:
xx = group and yy = index.
As default, nothing is connected to the input
.
Int. Scaling: 1 == 1 Type: I Volatile: N
0
9999
0
-
63.19 TTT Ref2In (tension to torque, reference 2 input)
Source (signal/parameter) for tension reference input 2 of tension to torque calculation. The format is
xxyy,
with:
xx = group and yy = index.
Default setting of 6315 equals
TensionRef (63.15).
Int. Scaling: 1 == 1 Type: C Volatile: N
0
9999
6315
-
63.20 TTT Ref3In (tension to torque, reference 3 input)
Source (signal/parameter) for tension reference input 3 of tension to tor
que calculation. The format is xxyy,
with:
xx = group and yy = index.
As default, nothing is connected to the input
.
Int. Scaling: 1 == 1 Type: C Volatile: N
0
9999
0
-
63.21 TTT Scale (tension to torque, torque scaling)
Torque scaling.
Int. Scaling: 100 == 1 % Type: SI Volatile: N
-325
325
100
%
63.22 TTT DiaActIn (tension to torque, actual diameter input)
Source (signal/parameter) for the actual diameter input of tension to torque calculation. The format is
xxyy,
with:
xx = group and yy = index.
Default setting of 6208 equals
DiameterAct (62.08).
Int. Scaling: 1 == 1 Type: I Volatile: N
0
9999
6208
-
63.23 Unused
63.24 TensToTorq (tension to torque, torque reference output)
Output of the tension to torque calculation. Torque reference in percent of
MotNomTorque (4.23).
Int. Scaling: 100 == 1 % Type: SI Volatile: Y
-
-
-
%
63.25 Unused
Friction compensation (loss compensation):
During the winding operation, the motor
must only generate the torque for the needed tension. The mechanics of the
winder generate losses from friction and torsion. These losses depend on the motor speed and measure them in speed
trials. They are non
-linear and must be saved in a characteristic curve with supporting points. The friction compensation
calculates the torque needed to compensate the losses of the winder mechanics depending on the speed.