Mitsubishi Electric FR-E800 Instruction Manual page 448

 Parameters updated by tuning results after tuning
First motor Second
Pr. motor Pr.
90 458 Motor constant (R1)
Motor constant (L1)/d-axis
92 460
inductance (Ld)
Motor constant (L2)/q-axis
93 461
inductance (Lq)
711 739 Motor Ld decay ratio
712 740 Motor Lq decay ratio
Starting resistance tuning
717 741
compensation coefficient 1
Starting magnetic pole position
721 742
detection pulse width
Torque current/Rated PM motor
859 860
current
96 463 Auto tuning setting/status
Position accuracy
979 —
compensation gain 1
Position accuracy
980 —
compensation gain 2
Position accuracy
981 —
compensation gain 3
*1 This setting value cannot be set in Pr.463.
 Tuning adjustment (Pr.1002)
• The overcurrent protective function may be activated during Lq tuning for an easily magnetically saturated motor (motor
with a large Lq decay ratio). In such case, adjust the target flowing current used for tuning with Pr.1002 Lq tuning target
current adjustment coefficient.
 Changing the motor constants
• The motor constants can be set directly when the motor constants are known in advance, or by using the data measured
during offline auto tuning.
• According to the Pr.71 (Pr.450) setting, the range of the motor constant parameter setting values and units can be
changed. The changed settings are stored in the EEPROM as the motor constant parameters.
 Changing the motor constants (when setting motor constants in units of
Ω, mH, or A)
• Set Pr.71 as follows.
Motor Pr.71 setting
MM-GKR 540
EM-A 1140
IPM motor 8090
SPM motor 9090
• Set desired values as the motor constant parameters.
First Second
motor Pr. motor Pr.
90 458 Motor constant (R1)
92 460 Motor constant (L1)/d-axis inductance (Ld)
93 461 Motor constant (L2)/q-axis inductance (Lq)
706 738 Induced voltage constant (phi f)
859 860 Torque current/Rated PM motor current
1412 1413 Motor induced voltage constant (phi f) exponent
Pr.96 (Pr.463) setting
Name
1
○
○
○
○
○
○
○
○
○
—
—
—
Name
*1
11 301
○ — Resistance per phase
— — d-axis inductance
— — q-axis inductance
— — d-axis inductance decay ratio
— — q-axis inductance decay ratio
○ —
— —
— —
*1
○
○
— ○
— ○
— ○
Setting range
0 to 50 Ω, 9999 0.001 Ω
0 to 500 mH, 9999 0.01 mH
0 to 500 mH, 9999 0.01 mH
0 to 5000 mV (rad/s), 9999 0.1 mV (rad/s)
0 to 500 A, 9999 0.01 A
0 to 2, 9999 1
14. (C) Motor Constant Parameters
14.3 Offline auto tuning for a PM motor
Description
Setting
Initial value
increments
9999
447
11
12
13
14
15
16
17
18
19
20