Tension control parameter group 14
PARAMETER DESCRIPTION 260
When 14-04
(P.604)
is 2，tension is set via communication.When controlling using upstream model,tension can be
set by communication.There are two ways to set tension by communication,one is to alter the value of 14-05
(P.605)
(14-04
(P.604)
should be set to 0),the other is to set via modbus address H100C (14-04
(P.604)
should be set to
2).The setting range of modbus address H100C is 0~30000.
14-07
(P.607)
is the zero speed tension increase option, used to set the tension of the system during zero speed. It
is mainly used to overcome the static friction at startup or keeping in a certain tension in zero speed.When
controlling small tension or having startup difficulties, appropriately increase the value of this parameter.
14-08
(P.608)
is the zero speed threshold parameter.When inverter operation speed is lower than this parameter,it is
considered working under zero speed.
14-09
(P.609)
is the tension taper parameter.This parameter is only used for winding control.When winding,there are
times that would be necessary to reduce the tension when increasing the winding radius in order to ensure the
material quality.
The formula of tension taper:
F=F0* 1 K* 1 D0+D1 / D+D1
F: actual tension，F0 : set taper，D0:shaft diameter，D:actual winding diameter，D1:parameter 14-10(P.654)`s
tension taper compensation value，K: tension taper.
Parameter 14-10(P.654) is the tension taper compensation value, which is able to slow down the tension decrease.
5.15.3 Curling radius calculation
The output torque is controlled by curling radius in open–loop torque mode. The output frequency corresponded to
line speed is gained by curling radius in close–loop speed mode.
Winding radius
calculation option
Calculate winding radius with linear speed
Calculate by thickness(encoder of motor side)，pulse signal
connects to A1/B1 of PG card
Calculate by thickness (encoder of winding shaft)，pulse
signal connects to M2 terminal
Analog value or pulse input
Calculate winding
memory control by
thickness calculation
Not saving winding radius when power outage
or calculation stops
Save winding radius when there’s a power outage or
calculation stops，and use saved winding radius as initial
winding radius when power recovers or calculation restarts
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