Mitsubishi FR-A800

(C) Motor constant parameters
450
PARAMETERS
Changing the motor constants (If setting the Pr.92 and Pr.93 motor
constants in units of [])
•Set Pr.71 as shown below.
• Set given values as the motor constant parameters.
 For the FR-A820-03160(55K) or lower and FR-A840-01800(55K) or lower.
 For the FR-A820-03800(75K) or higher and FR-A840-02160(75K) or higher.
NOTE
• If "star connection" or "delta connection" is incorrectly selected in Pr.71, Advanced magnetic flux vector control, Real
sensorless vector control and vector control are not performed normally.
• If "9999" is set, tuning data will be invalid and the constant values for Mitsubishi motors (SF-PR, SF-JR, SF-HR, SF-JRCA,
SF-HRCA and SF-V5RU (1500 r/min series) and so on) are used.
Applicable motor
Pr.71 setting
Star connection motor Delta connection motor
Standard motor 5 6
Constant-torque motor 15 16
First
motor Pr.
Second
motor Pr.
Name Setting range
Setting
increments
Initial
value
82 455
Motor excitation current
(No-load current)
0 to 500 A, 9999
 0.01 A
9999
0 to 3600 A, 9999
 0.1 A
90 458 Motor constant (r1)
0 to 50 , 9999
 0.001 
0 to 400 m, 9999 0.01 m
91 459 Motor constant (r2)
0 to 50 , 9999
 0.001 
0 to 400 m, 9999 0.01 m
92 460 Motor constant (1)
0 to 50 , 9999
 0.001 
0 to 3600 m, 9999 0.01 m
93 461 Motor constant (2)
0 to 50 , 9999
 0.001 
0 to 3600 m, 9999 0.01 m
94 462 Motor constant (m)
0 to 500 , 9999

0.01 
0 to 100 , 9999

859 860
Torque current/Rated PM
motor current
0 to 500 A, 9999
 0.01 A
0 to 3600 A, 9999 0.1 A
298 560 Frequency search gain 0 to 32767, 9999 1
Iq = I100
2
-I0
2
Iq = torque current, I100 = rated current, I0 = no load curren
t