User manual

12 Functions and operations in the tension control mode
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12.4 Tension controlled operation (simple mode)
Follow the steps below to perform a tension controlled operation:
Step 1 Calculating the tension command value
Step 2 Setting the tension command value
Step 3 Setting the motor rotation direction
Step 4 Performing the tension controlled operation
Step 1 Calculating the tension command value
In the simple mode, the operating speed of the motor is inversely proportional to the generated torque.
Calculate the tension command value based on the operating speed and torque, by using the formula below:
㽲Operating speed [r/min]
㽴Minimum speed [r/min]
㽳Maximum required torque [N·m] × 100
Rated motor torque [N·m]
Tension command value [%] = ×
Speed [r/min]
㽲Operating speed㽴Minimum speed
(Set by the SW2)
㽳Maximum required torque
Torque [N·m]
①Operating speed..........................The lowest winding speed (corresponding to the maximum roll diameter)
②Maximum required torque..........Calculate an appropriate value according to the mechanism of your
equipment.
③Minimum speed..........................Set by the SW2. Find an approximate value of operating speed (①) from
the table below. Note that the minimum speed must be smaller than the
operating speed.
Example: If the operating speed is 24 r/min, the minimum speed should be
the value corresponding to dial setting 2 (22 r/min).
Operation point
(unwinding)
Operation point
(winding)
Minimum speed
Torque
Rated speed
100%
Tension command 100%
SW2 dial setting Minimum speed [r/min] SW2 dial setting Minimum speed [r/min]
0 10 8 220
1 15 9 330
2 22 A 470
3 33 B 680
4 47 C 1000
5 68 D 1500
6 100 E 2200
7 150 F 3000