Parameter Description
equipment, the tension can be set by communication. There are two ways to realize
communication setting of tension: 1) Change value of P.605, then P.604 shall be set to 0;
2) Set the tension through communication address 100CH, P.604 shall be set to 2 and
the communication address shall be set between 0 and 30000.
• P.607 is the zero-speed tension increase. It is used to set the tension of the system when it
is at zero-speed. It is mainly for overcoming static friction when startup or keep certain
tension when the system is at zero-speed. If the control tension is small and it is hard
to start, it is allowed to properly increase the setting value of the parameter.
• P.608 is the zero-speed threshold. When the running speed of the inverter is below the set
speed of the parameter, it is considered that the inverter is under zero-speed operation
status.
• P.609 is the tension taper. The parameter is only used for wind-up control. For the wind-up
control, sometimes, it is needed to reduce the tension while increasing the curling radius
to ensure a good curling of the material. Formula of tension taper:
( ) ( )
{ }
F=F0* 1 K* 1 D0+D1 / D+D1−−
Wherein, F is the actual tension, F0 is the setting tension, D0 is the diameter of winding
shaft, D is the actual curling radius, D1 is the taper compensation correction of P.654 set
tension, and K is the tension taper.
• P.654 is the taper compensation correction of tension which can relay the reduction
curvature of tension.
5.87 Curling Radius Calculation (P.610~P.626, P.650)
P.610 “curling radius calculation method selection”
P.611 “Maximum curling radius”
P.612 “Winding shaft diameter”
P.613 “Initial curling radius source”
P.614 “Initial curling radius 1”
P.615 “Initial curling radius 2”
P.616 “Initial curling radius 3”
P.617 “Curling radius filtering
coefficient”
P.618 “Current value of curling radius”
P.619 “Number of pulses each turn”
P.620 “Number of turns each layer”
P.621 “Material thickness setting
source”
P.622 “Material thickness 0”
P.623 “Material thickness 1”
P.624 “Material thickness 2”
P.625 “Material thickness 3”
P.626 “Maximum thickness”
P.650 “Curling radius memory”
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