Lenze i950 - Diameter Estimation before Dancer Motion

7.8 Diameter esmaon before dancer moon
When the winding process is started with a wrong diameter, neither the speed feedforward
c
ontrol value nor the gain adaptaon of the speed controller will be adapted. This leads to
instability in the winding process.
In the case of systems that are switched to reels whose diameter is unknown or not input by
the machine operator:
•
The s
tart diameter must be detected by a diameter sensor.
•
The idencaon run described in the following must be executed.
The resulng
circumferenal speed of the reel must be used for the diameter calculaon.
1 ... n
p
5
5
2
3
4
t
v
[mm/s]
4
4
4
2
3
4
p [%]
100
- 100
t
Stored material length dancer
0x5052:200
Valid velocity Dcalc
0x5051:064
DiamIdent: Vp Faktor
0x5051:098
DiamIdent: Velocity
0x5051:099
DiamIdent: Acceleration
0x5051:100
DiamIdent: Deceleration
0x5051:101
DiamIdent: Jerk
0x5051:102
Dancer act. position filtered
0x5052:189
Threshold max dancer pos
0x5052:195
Red.diam.calc distance
0x5051:071
DiamIdent: Req. calc cycles
0x5051:103
DiamIdent: Max dancer pos
0x5051:104
Execute diameter ident
0x5050:010 Bit 27
Internal ramp or identification
0x5050:010 Bit 30
Lots are wound up
Standstill
0x5050:010 Bit 12
Drive fault
0x5050:010 Bit 3
Fig. 50: Dialogue overview "Inial diameter detecon"
Precondions for the idencaon run
•
The speed mas
ter of the system is at standsll: Line speed = 0.
•
The ma
terial length stored in the dancer plus the available dancer stroke available for the
idencaon must be sucient such that, even at maximum diameter, it is possible to per-
form a winding sha movement of at least 2x the rapid diameter calculaon cycle Number
of revoluons for fast diameter calculaon. 40x5051:071
•
The dancer is in the lower limit posion (maximum material length saved in dancer).
•
The maximum material length stored in the dancer is congured in [mm] in the parameter
Stored material length in dancer. 40x5052:200
•
The dancer limit posions are parameterised such that the
posion at the output Eecve
actual dancer posion is output scaled from -100.00% to +100.00%. 40x5052:189
•
The parameters for the movement during the idencaon run are adapted to the
mechanical circumstances.
Conguring the "Winder Dancer" TA
Diame
ter esmaon before dancer moon
124