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103
Selection and protection of a motor
4
PARAMETERS
4.8.2 Applied motor (Pr. 71, Pr. 450)
The above parameters can be set when Pr. 160 Extended function display selection = "0". (Refer to page 162)
(1) Set the motor to be used
Refer to the following list and set the parameter according to the motor used.
Setting of the used motor selects the thermal characteristic appropriate for the motor.
Setting is required to use a constant-torque motor. Thermal characteristic of the electronic thermal relay function
suitable for the motor is set.
When General-purpose magnetic flux vector is selected, the motor constants (SF-JR, SF-HR, SF-JRCA, SF-HRCA,
etc.) necessary for control are selected as well.
Parameter
Number
Name
Initial
Value
Setting Range Description
71 Applied motor
0
0, 1, 3, 13,
23, 40, 43, 50, 53
Selecting the standard motor or constant-torque
motor sets the corresponding motor thermal
characteristic.
450 Second applied motor
9999
0, 1 Set when using the second motor.
9999
Second motor is invalid.
(thermal characteristic of the first motor
(Pr. 71))
Pr. 71 (Pr. 450)
Setting
Thermal Characteristic of the Electronic Thermal Relay Function
Motor (: Used motor)
Pr. 71 Pr. 450
Standard
(SF-JR, etc.)
Constant torque
(SF-JRCA, etc.)
0
(Pr. 71 initial value)
Thermal characteristics of a standard motor
1 Thermal characteristics of the Mitsubishi constant-torque motor
40 — Thermal characteristic of Mitsubishi high efficiency motor (SF-HR) ∗1
50 — Thermal characteristic of Mitsubishi constant torque motor (SF-HRCA) ∗2
3 — Standard motor
Select "Offline auto tuning
setting"
13 — Constant-torque motor
23 —
Mitsubishi standard motor
(SF-JR 4P 1.5kW or less)
43 — Mitsubishi high efficiency motor (SF-HR) ∗1
53 —
Mitsubishi constant-torque motor (SF-HRCA)
∗2
—
9999
(initial
value)
Without second applied motor
∗1 Motor constants of Mitsubishi high efficiency motor SF-HR.
∗2 Motor constants of Mitsubishi constant-torque motor SF-HRCA.
REMARKS
When performing offline auto tuning, set any of "3, 13, 23, 43, 53" in Pr. 71.
(Refer to page 105 for offline auto tuning.)
For the FR-D720-238 and 318, FR-D740-120 and 160, the Pr. 0 Torque boost and Pr. 12 DC injection brake operation voltage
settings are automatically changed according to the Pr. 71 setting as follows.
Automatic Change
Parameter
Standard Motor
Setting ∗1
Constant-torque Motor
Setting ∗2
Pr. 0 3% 2%
Pr. 12 4% 2%
∗1 Pr. 71 setting: 0, 3, 23, 40, 43
∗2 Pr. 71 setting: 1, 13, 50, 53