Mitsubishi Electric 800 Series Instruction Manual (Function page 476

17.5
SF-PR slip amount adjustment mode
V/F V/F V/F
• As compared to our conventional SF-JR motor, the slip amount is small for the high-performance energy-saving SF-PR
motor. When replacing the SF-JR to the SF-PR, the slip amount is reduced and the rotations per minute increases.
Therefore, when the SF-PR is used with the same frequency setting as that of the SF-JR, power consumption may
increase as compared to the SF-JR.
• By setting the slip amount adjustment mode, the frequency command can be adjusted to keep the rotations per minute of
the SF-PR equivalent to those of the SF-JR for power consumption reduction.
Pr. Name
673
SF-PR slip amount adjustment
*1
operation selection
G060
674
SF-PR slip amount adjustment
*1
gain
G061
*1 The setting is available only for the 200/400 V class.
• By setting the number of SF-PR motor poles in Pr.673 SF-PR slip amount adjustment operation selection, the SF-PR
slip amount adjustment mode is activated.
• The SF-PR slip amount adjustment mode is available only under V/F control.
• Use Pr.674 SF-PR slip amount adjustment gain to fine-tune the rotations per minute. To reduce the rotations per minute
(to increase the compensation frequency), set a larger value in Pr.674. To increase the rotations per minute (to reduce the
compensation frequency), set a smaller value in Pr.674. (Lower rotations per minute reduce the power consumption, and
higher rotations per minute increase the power consumption.)
NOTE
• The slip amount adjustment is not available in the following conditions.
During acceleration/deceleration, during DC injection brake operation, during PID control, during encoder feedback control,
during stall prevention operation, during regeneration avoidance operation, during traverse operation, and while the slip
compensation is valid (Pr.245).
• The slip amount adjustment is not available when the applicable motor capacity of the inverter is not compatible with the SF-
PR. (For the details of the applicable motor capacity, refer to the Instruction Manual (Connection).)
Initial value Setting range
2, 4, 6
9999
9999
100% 0% to 500%
Description
Set the number of SF-PR motor poles.
The slip amount adjustment is disabled.
Setting is available for fine adjustment of the slip amount.
17. (G) Control Parameters
17.5 SF-PR slip amount adjustment mode
11
12
13
14
15
16
17
18
19
20
475