Mitsubishi Electric FR-A800, Instruction Manual

Page: 333 / 1042

Parameters Position control under vector control and PM sensorless vector control
FR-A800 5 - 153
5.5.3 Set the procedure of PM sensorless vector control (position control)
NOTES The carrier frequency is limited during vector control. (Refer to page 5-219.)
For vector control for a motor with a resolver, refer to the Instruction Manual of the FR-A8APR.
Fig. 5-60: Set the procedure of PM sensorless vector control (position control)
NOTES The carrier frequency is limited during PM sensorless vector control. (Refer to page 5-219.)
Position deviation may occur due to motor temperature changes. In such case, shut off the
inverter outputs, and restart.
Perform position control under PM sensorless vector control only when using an MM-CF IPM
motor with the low-speed high torque characteristic. (Pr. 788 = "9999 (initial value)")
Position control is performed on the assumption of 4096 pulses/motor rotation.
The positioning accuracy is 200 pulses/rev for 1.5K or lower, and 100 pulses/rev for 2K or higher
(under no load).
PM PM PM
Test run
Select the position command source. (Pr. 419)
Select the control mode. (Pr. 800) (Refer to page 5-56)
As required
앫
Set the electronic gear. (Refer to page 5-177.)
앫
Set the position adjustment parameters. (Refer to page 5-179.)
앫
Adjust the position control gain. (Refer to page 5-181.)
앫
Set the torque limit. (Refer to page 5-84.)
Set Pr. 800 = "13 (position control)" or "14 (speed - position switching)" to enable position
control.
Perform IPM parameter initialization. (Refer to page 5-70.)
Set the positioning parameters.
(Pr. 465 to Pr. 494 and Pr. 1222 to Pr. 1281)
(Refer to page 5-132.)
Select the command pulse type. (Pr. 428)
(Refer to page 5-171.)
Position command by contact input. Position command by inverter pulse input.
Set "3003 or 3103" in Pr. 998 "PM parameter initialization" (IPM parameter initial
settings).
Setting value "3003": parameter settings for MM-CF IPM motor (rotations per minute)
Setting value "3103": parameter settings for MM-CF IPM motor (frequencies)