Mitsubishi Electric FR-F800 Series Instruction Manual page 560

NOTE
• The adjustable 5 points V/F is enabled under V/F control.
• When Pr.19 Base frequency voltage = "8888 or 9999", setting of Pr.71 = "2" is not available. To set "2" in Pr.71, set the rated
motor voltage in Pr.19.
• A write disable error "
• Set frequency or voltage for each point in Pr.100 to Pr.109 within the range of Pr.3 Base frequency or Pr.19 Base frequency
voltage.
• When Pr.71 = "2", Pr.47 Second V/F (base frequency) is not available.
• When Pr.71 = "2", the inverter calculates the characteristic of the electronic thermal relay for a standard motor.
• By simultaneously using Pr.60 Energy saving control selection and the adjustable 5 points V/F, further energy saving effect
is expected.
• The Pr.0 Torque boost and Pr.12 DC injection brake operation voltage settings are automatically changed according to
the Pr.71 setting. (Refer to
Parameters referred to
Pr.0 Torque boostpage 551
Pr.3 Base frequency, Pr.19 Base frequency
Pr.12 DC injection brake operation
Pr.47 Second V/F (base
Pr.60 Energy saving control
Pr.71 Applied motor, Pr.450 Second applied
5.13.7 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.
673
G060
674
G061
• 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 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 details on applicable motor capacity, refer to
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page
voltagepage 552
voltagepage 560
frequency)page 558
selectionpage 557
motorpage 379
Name
SF-PR slip amount
adjustment operation
selection
SF-PR slip amount
adjustment gain
search engine
" is generated when the same frequency value is used for multiple points.
382.)
Initial value Setting range
2, 4, 6
9999
9999
100% 0% to 500%
page 638.)
Description
Set the number of poles of the SF-PR.
The slip amount adjustment is disabled.
Setting is available for fine adjustment of the slip amount.
5.13 (G) Control parameters
1
2
3
4
5
6
7
8
9
10
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5. PARAMETERS