Mitsubishi Electric FR-D720S SC EC, Instruction Manual

Page: 222 / 512

Selection and protection of a motor Parameter
6 - 72
6.7.2 Applied motor (Pr. 71, Pr. 450)
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.
The above parameters can be set when Pr. 160 = 0.
Set the motor to be used
Refer to the following list and set this parameter according to the motor used.
Motor constants of Mitsubishi high efficiency motor SF-HR.
Motor constants of Mitsubishi constant-torque motor SF-HRCA.
Pr.
No.
Name
Initial
Value
Setting Range Description Parameters referred to
Refer to
Section
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.
0
12
80
Torque boost
DC injection brake
operation voltage
Motor capacity 6.2.1
6.8.1
6.7.3
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
Thermal Characteristic of the Electronic Thermal
Relay Function
Motor
Standard
(SF-JR, etc.)
Constant Torque
(SF-JRCA, etc.)
0
(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)
✔
50 —
Thermal characteristic of Mitsubishi constant torque
motor (SF-HRCA)
✔
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)
✔
53 —
Mitsubishi constant-torque
motor (SF-HRCA)
✔
—
9999
(initial
value)
Without second applied motor
Tab. 6-6: Setting of parameter Pr. 71 and Pr. 450