Mitsubishi Electric A800 Plus Series Function Manual page 95

Dancer feedback speed control details
Tension command output setting
• For outputting the tension command, assign the dancer tension command to terminal FM/CA or terminal AM.
Signal type
Dancer tension command
Dancer tension command 2
• Use C0 (Pr.900) for terminal FM/CA calibration and use C1 (Pr.901) for terminal AM calibration.
• The dancer tension command is dependent on the winding diameter. Set Pr.645 Winding diameter storage selection =
"1" to enable the winding diameter storage function.
NOTE
• When the X114 signal is turned OFF while Pr.645 = "0" (winding diameter storage function disabled), the winding diameter is
initialized, which may cause a sudden change in the analog signal output for dancer tension control.
• The dancer tension command and the dancer tension command 2 are clamped at 100%.
Dancer tension setting input selection (Pr.364, Pr.430)
• Use Pr.364 Dancer tension setting input selection or Pr.430 Dancer tension setting to set the dancer tension setting
input method.
Pr.430 setting Pr.364 setting
1 to 100% —
3
4
5
9999
6
9999
∗1 The input specification in the initial setting is indicated.
∗2
The dancer tension command is 0%.
NOTE
• If two or more functions are assigned to one terminal, the priorities of the functions are defined as follows.
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)
Dancer tension setting input adjustment (Pr.74, Pr.822, Pr.833, Pr.902 to
Pr.905, Pr.917, Pr.918, Pr.926, Pr.927)
• When analog input is used for setting the dancer tension, use the following parameters to calibrate the input value of each
terminal. The tension setting analog input values at both 0% and 100% can be calibrated.
Terminal 2 (analog value: 0 to 100%) (0 to 5 VDC)
Terminal 4 (analog value: 20 to 100%) (4 to 20 mADC)
Terminal 1 (analog value: -100 to 100%) (0 to ±10 VDC)
Terminal 6 (FR-A8AZ) (analog value: -100 to 100%) (0 to ±10 VDC)
∗1
The input specification in the initial setting is indicated.
94
DANCER FEEDBACK SPEED CONTROL
Minimum Pr.54 (FM/CA)
increment Pr.158 (AM) setting
1% 19
1% 30
As set in Pr.430
Terminal 2 (analog value: 0 to 100%) (0 to 5 VDC)
Terminal 4 (analog value: 20 to 100%) (4 to 20 mADC)
Terminal 1 (analog value: -100 to 100%) (0 to ±10 VDC)
Terminal 6 (FR-A8AZ) (analog value: -100 to 100%) (0 to ±10 VDC)
No function
∗2
Input terminal
∗1
∗1
∗1
Dancer tension setting (%)
-10 V
Terminal FM/CA/AM
full-scale value
100%
100%
Dancer tension setting method
Calibration parameter
C3 (Pr.902), C4 (Pr.903)
C6 (Pr.904), C7 (Pr.905)
C13 (Pr.917), C15 (Pr.918)
C31 (Pr.926), C33 (Pr.927)
∗1
100
0 Analog input value 10 V
C3 (Pr.902)
C6 (Pr.904)
C13 (Pr.917)
C31 (Pr.926)
Remarks
Output even while dancer
feedback speed control is invalid
Zero output while dancer
feedback speed control is invalid
∗1
∗1
∗1
∗1
C4 (Pr.903)
C7 (Pr.905)
C15 (Pr.918)
C33 (Pr.927)