Mitsubishi Electric MDS-E, Instruction Manual

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MDS-E/EH Series Instruction Manual
6 Spindle Adjustment
358 IB-1501229-F
(2) Setting of the temperature compensation time constant (SP236)
[1] Set SP236(WIH)=10. (Leave the setting of SP235 unchanged.)
[2] Run the program (acceleration/deceleration) that you created in [5] of (1), and continue until [Temperature
(°C)] on the spindle monitor screen reaches 100 (or the upper limit of temperature in practical use).
[3] Stop the spindle when [Temperature (°C)] on the spindle monitor reaches 100 (or the upper limit of
temperature in practical use). Then wait until [Temperature (°C)] drops to 80 (or the upper limit of temperature
in practical use - 20°C).
[4] When [Temperature (°C)] on the spindle monitor reaches 80 (or the upper limit of temperature in practical use
- 20°C), run the program (acceleration/deceleration) you created in [5] of (1) by one cycle. Adjust SP236(WIH)
as follows according to the value of [AFLT gain (dB)] on the spindle monitor screen during the operation.
• When [AFLT gain (dB)] is smaller than 90:
Increment SP236(WIH) by 2 at a time and perform [2]
• When [AFLT gain (dB)] is 111 or greater:
Decrement SP236(WIH) by 2 at a time and perform [2].
[5] The SP236(WIH) value to be obtained while [AFLT gain (dB)] is in the range of 90 to 110 is the result of the
final adjustment.
[6] Set SP226 bit8 to 0. (Change SP226(SFNC6) from 0100 to 0000.)
*Change SP153 and SP185 back to the original settings and turn OFF and ON the NC
power.
CAUTION
Check the monitor screen to make sure that the motor has reached the maximum rotation speed in constant output during
execution of the created program.
* "Maximum rotation speed in constant output" is the maximum speed at which the short-time rated output will not drop
lower than the motor’s specified output. (Refer to the motor output specifications.)
If the machine’s specified speed is lower than the motor’s maximum speed in constant output, the machine’s specified
speed serves as the maximum rotation speed.