Mitsubishi Electric A800 Plus Series Function Manual page 65

Dancer feedback speed control details
• The line speed commanded by pulse train input is calibrated with Pr.351 Line speed command bias, Pr.353 Line speed
command gain, Pr.354 Line speed command pulse input bias, and Pr.355 Line speed command pulse input gain.
The calculation result is applied as the line speed command value (lower limit: 0 m/min, upper limit: 6553.4 m/min). When
Pr.353 = "9999", the calculation result is invalid (line speed command value: 0).
NOTE
• To input the line speed command by the pulse train input to the plug-in option or control terminal option under vector control,
setting of Pr.862 Encoder option selection is required. (Refer to
Pr.351 < Pr.353, and Pr.354 < Pr.355
Line speed command (m/min)
6553.4
Pr.353
Pr.351
0
Pr.351 < Pr.353, and Pr.354 > Pr.355
Line speed command (m/min)
6553.4
Pr.353
Pr.351
0
Line speed command analog input (Pr.361 = "3 to 6")
• The line speed can be commanded by analog input.
• The line speed commanded by analog input is calibrated with Pr.350 Line speed command voltage/current bias, Pr.351
Line speed command bias, Pr.352 Line speed command voltage/current gain, and Pr.353 Line speed command
gain. The calculation result is applied as the line speed command value (lower limit: 0 m/min, upper limit: 6553.4 m/min).
When Pr.353 = "9999", the calculation result is invalid (line speed command value: 0).
• When the line speed is commanded by analog input, the input value can be filtered using Pr.74 Input filter time constant,
Pr.822 Speed setting filter 1, and Pr.832 Speed setting filter 2.
NOTE
• The difference between the setting values of Pr.350 and Pr.352 can be set within 5%. (Even if the difference is 5% or less,
Er3 (calibration error) does not occur.)
• The Pr.350 setting can be larger than the Pr.352 setting. Also, the Pr.351 setting can be larger than the Pr.353 setting.
64
DANCER FEEDBACK SPEED CONTROL
Input pulse
Pr.354 Pr.355
(kpps)
Pr.355 Pr.354 Input pulse
(kpps)
Line speed command (m/min)
Pr.353
Pr.351
Pr.350
page 194.)
Pr.351 > Pr.353, and Pr.354 < Pr.355
Line speed command (m/min)
6553.4
Pr.351
Pr.353
0
Pr.354
Pr.351 > Pr.353, and Pr.354 > Pr.355
Line speed command (m/min)
6553.4
Pr.351
Pr.353
0
Pr.355
Analog input value (%)
Pr.352
Input pulse
Pr.355
(kpps)
Pr.354 Input pulse
(kpps)