Tension sensorless torque control details
TENSION SENSORLESS TORQUE CONTROL
119
5
Tension command source selection (Pr.804)
• Selects the tension command input method in
Pr.804 Tension / Torque command source selection
.
• The priorities of the input signals are defined as follows. If the input method for a signal is the same as that for the input
signal with higher priority, the tension command value is regarded as "0".
Dancer signal input (
Pr.363
) > Actual line speed input (
Pr.362
) > Tension command input (
Pr.804
) > Line speed command
input (
Pr.361
≠
"0") > Taper setting input (
Pr.1285
) > Dancer tension setting input (
Pr.364
) > Line speed command
compensation input > Line speed command input (
Pr.361
= "0")
Tension command by analog input (Pr.804 = "0")
• Input the tension command value using analog input to the terminal 1 or the terminal 6 of the FR-A8AZ. To use terminal 1,
set
Pr.868 Terminal 1 function assignment
= "3 or 4". To use terminal 6, set
Pr.406 High resolution analog input
selection
= "3 or 4".
• The tension command using analog input is calibrated with
Pr.1402 to Pr.1405
. When "0" is set in both
Pr.1403
and
Pr.1405
, the setting is invalid (line speed command value: 0).
NOTE
• When the tension command is input using analog input, the input value can be filtered using
Pr.74 Input filter time constant
,
Pr.826 Torque setting filter 1
, and
Pr.836 Torque setting filter 2
.
• The maximum value of the tension command can be changed by the
Pr.1401 Tension command increment
setting.
Tension command by parameters (Pr.804 = "1")
• Set
Pr.365 Tension command value (RAM)
or
Pr.366 Tension command value (RAM, EEPROM)
to set the tension
command value.
• To change the tension command value frequently, write it in
Pr.365
. If the value is written to
Pr.366
frequently, the life of the
EEPROM will be shortened.
Tension command by pulse train input (FR-A8AL) (Pr.804 = "2")
• Input the tension command value using pulse train input of the FR-A8AL.
• The tension command using pulse train input (FR-A8AL) is calibrated with
Pr.1403
and
Pr.1405
. When "0" is set in both
Pr.1403
and
Pr.1405
, the setting is invalid (line speed command value: 0).
NOTE
• The maximum value of the tension command can be changed by the
Pr.1401 Tension command increment
setting.
Pr.1402
Pr.1404
Pr.1403
Pr.1405
Analog
input value
Tension command value
Maximum tension
command value
400 kpps
Pr.1403
Pr.1405
Pulse train
input value
Tension command value
Maximum tension
command value
Summary of Contents for A800 Plus Series
Page 240: ...239 MEMO ...
