Large Starting Torque And Low Speed Torque Are Necessary; Control) (Pr. 71, Pr. 80, Pr. 81, Pr. 800) - Mitsubishi Electric FR-E700 Series Instruction Manual

Simple mode parameter list
5.1.7

Large starting torque and low speed torque are necessary

(Advanced magnetic flux control, General-purpose magnetic flux vector

control) (Pr. 71, Pr. 80, Pr. 81, Pr. 800)

Advanced magnetic flux vector control can be selected by setting the capacity, poles and type of the
motor used in Pr. 80 and Pr. 81.
Advanced magnetic flux vector control or general-purpose magnetic flux vector control?
The low speed torque can be improved by providing voltage compensation so that the motor current
which meets the load torque to flow. Output frequency compensation (slip compensation) is made so
that the motor actual speed approximates a speed command value. Effective when load fluctuates
drastically, etc.
General-purpose magnetic flux vector control is the same function as it is for the FR-E500 series. Select
this control when operation characteristics as similar as possible are required when replacing from
the FR-E500 series. For other cases, select advanced magnetic flux vector control.
Pr. No. Name
Electronic thermal
9
O/L relay
71
Applied motor
80
Motor capacity
81
Number of motor poles
800
Control method selection
Refer to appendix A for the rated inverter output current.
Set a value other than "9999" in Pr. 80 and Pr. 81.
NOTES If the following conditions are not satisfied, select V/F control since malfunction such as insuffi-
cient torque and uneven rotation may occur.
● The motor capacity should be equal to or one rank lower than the inverter capacity. (Note that
the capacity should be 0.1kW or more.)
● Motor to be used is any of Mitsubishi standard motor, high efficiency motor (SF-JR, SF-HR
0.2kW or more) or Mitsubishi constant-torque motor (SF-JRCA four-pole, SF-HRCA 0.4kW to
15kW). When using a motor other than the above (other manufacturer's motor), perform
offline auto tuning without fail.
Single-motor operation (one motor run by one inverter) should be performed.
The wiring length from inverter to motor should be within 30m. (Perform offline auto tuning in
the state where wiring work is performed when the wiring length exceeds 30m.)
5 - 12
AD MFVC AD MFVC AD MFVC
Initial
Setting Range
Value
Rated inverter
0–500A
current
0/1/3–6/13–16/23/24/40/43/44/
0
50/53/54
0.1–55kW
9999
9999
2/4/6/8/10
9999
9999
20
20
30
GP MFVC GP MFVC GP MFVC
Description
Set the rated motor current.
By selecting a standard motor or constant-torque motor, thermal
characteristic and motor constants of each motor are set.
Set the applied motor capacity.
V/F Control
Set the number of motor poles.
V/F Control
Advanced magnetic flux vector control
General-purpose magnetic flux vector control
Basic settings