Yaskawa Matrix Converter User Manual Page 226

  • Download
  • Add to my manuals
  • Print
  • Page
    / 398
  • Table of contents
  • TROUBLESHOOTING
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 225
Continuing Operation
6-61
Application Precautions for Speed Estimation Speed Search
When using V/f Control Method always perform Stationary Auto-Tuning for line-to-line resistance only
before using speed searches based on estimated speeds.
When using vector control, always perform Rotational Auto-Tuning before using speed search based on
estimated speeds.
If the cable length between the motor and MxC is changed after Auto-Tuning has been performed, perform
Stationary Auto-Tuning for line-to-line resistance only again.
Speed Search Selection
Set whether to enable or disable speed search at startup, and set the type of speed search (estimated speed or
current detection) using setting b3-01. To perform speed search when inputting the Run Command, set b3-01
to 1 or 3.
IMPORTANT
The motor will not operate when Stationary Auto-Tuning for line-to-line resistance only is per-
formed.
Search Name Estimated Speed Current Detection
Search Method
If the b3-14 (Bi-Directional Speed Search
Selection) is set to 1 (enable), estimates the
motor speed when the search starts, and accel-
erates and decelerates from the estimated speed
to the set frequency. Also, the direction of
motor rotation can be searched.
Starts speed search from the frequency when
the temporary power loss was detected, or from
the highest frequency, and performs speed
detection at the current level during the search.
External Speed Search
Command
External Search Command 1 and External
Search Command 2 become the same opera-
tion, estimating the motor speed and starting
the search from the estimated speed.
External Speed Search Command 1:
Starts speed search from the maximum output
frequency.
External Speed Search Command 2:
Starts speed search from the frequency refer-
ence set before the search command.
Application
Precautions
Cannot be used multi-motor MxCs, motors two
or more frames smaller than the MxC capacity,
and high-speed motors (120 Hz min.)
In control method without a PG encoder, the
motor may accelerate suddenly with light
loads.
Page view 225
1 2 ... 221 222 223 224 225 226 227 228 229 230 231 ... 397 398

Comments to this Manuals

No comments