Function Application
‑621‑
Para. Name De
fault
Value Range
Description
B0‑00
Tension control
mode
0
0: Disabled Similar to general functions of
the AC drive. Basic operations
such as parameter auto‑tuning
and direction judgment must be
performed in this mode.
1: Open‑loop
torque control
Tension/position detection and
feedback are not required. In
torque control mode, the AC
drive calculates the target torque
to control the tension on
materials. Use FVC to achieve
optimal control effect.
2: Closed‑loop
speed control
Tension/position detection and
feedback are required. In speed
control mode, the AC drive
calculates the synchronous
frequency of the linear speed
based on the linear speed and
roll diameter and superposes PID
closed‑loop operation frequency.
In this way, the target frequency
is updated in real time to realize
stable tension or position. SVC,
V/f, or FVC can be selected.
3: Closed‑loop
torque control
Tension detection and feedback
are required. In torque control
mode, the target torque can be
calculated based on PID
adjustment or main + PID
adjustment to implement
tension control. Use FVC to
achieve optimal control effect.
4: Constant
linear speed
control
In speed control mode, the AC
drive adjusts its running
frequency according to the
change in roll diameter to ensure
constant linear speed of the
system. SVC, V/f, or FVC can be
selected.
When the DI allocated with function 60 (exit tension control) is activated, settings of
the preceding modes become invalid and the AC drive exits the tension control mode.
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