Mitsubishi Electric FR-E700EX Instruction Manual page 76

PM sensorless vector control
REMARKS
 Make sure to set Pr.998 before setting other parameters. If the Pr.998 setting is changed after setting other parameters, some of
those parameters will be initialized too. (Refer to "(2) PM parameter initialization list" for the parameters that are initialized.)
 If the setting of Pr.998 PM parameter initialization is changed from "3024, 6004 (rotations per minute)" to "3124, 6104
(frequency)", or from "3124, 6104" to "3024, 6004", all the target parameters are initialized.
The purpose of Pr.998 is not to change the display units. Use Pr.144 Speed setting switchover to change the display units between
rotations per minute and frequency. Pr.144 enables switching of display units between rotations per minute and frequency
without initializing the parameter settings.
Example) Changing the Pr.144 setting between "6" and "106" switches the display units between frequency and rotations per
minute.
(2) PM parameter initialization list
The parameter settings in the following table are changed to the settings required to perform control for the applied PM motor
with the parameter setting mode or with Pr.998 PM parameter initialization setting. The changed settings differ according to the
applied PM motor. For the settings, refer to the PM motor specifications table below.
Parameter
Name
number
1
Maximum setting
4
Multi-speed setting (high speed)
5
Multi-speed setting (middle speed)
6
Multi-speed setting (low speed)
9
Electronic thermal O/L relay
10
Coasting speed
13
Starting speed
15
Jog speed setting
Acceleration/deceleration reference
20
speed
22
Torque limit level
37
Speed display
42
Speed detection
55
Speed monitoring reference
56
Current monitoring reference
125(903)
Terminal 2 speed setting gain speed
126(905)
Terminal 4 speed setting gain speed
144
Speed setting switchover
374
Overspeed detection level
High speed during home position
453
return
455
Home position return shifting speed
Current average value monitor signal
557
output reference current
730
Speed estimation P gain
820
Speed control P gain
821
Speed control integral time
824
Torque control P gain
825
Torque control integral time
870
Speed detection hysteresis
Regeneration avoidance
885
compensation speed limit value
REMARKS
 If PM motor control parameter initialization is performed in frequency (Pr.998 = "3124 or 6104"), the rotation speed parameters
not listed in the table and the monitored items are also set and displayed in frequency.
<PM motor specifications table>
Rated motor rotation speed (frequency)
Maximum motor rotation speed (frequency)
Number of motor poles
74
PM motor (rotations per minute)
3024 (MM-GKR),
Pr.998
6004 (S-PM)
Maximum motor rotation speed
Rated motor rotation speed
50% of the rated motor rotation speed
10% of the rated motor rotation speed
3% of the rated motor rotation speed
0.5% of the rated motor rotation speed
5% of the rated motor rotation speed
Rated motor rotation speed
6% of the rated motor rotation speed
Rated motor rotation speed
Rated motor rotation speed
Rated motor rotation speed
Number of motor poles + 100
Rated motor rotation speed  1.15
10% of the rated motor rotation speed
50% of the rated motor rotation speed
MM-GKR: 0.200s, S-PM: 0.333s
0.5% of the rated motor rotation speed
6% of the rated motor rotation speed
MM-GKR
(0.1kW to 0.75kW) (0.1kW to 1.5kW)
3000r/min (250Hz) 3000r/min (100Hz)
3000r/min (250Hz) 3000r/min (100Hz)
10 4
Setting value
PM motor (frequency)
3124 (MM-GKR),
6104 (S-PM)
Maximum motor frequency
Rated motor frequency
50% of the rated motor frequency
10% of the rated motor frequency
Rated motor current
3% of the rated motor frequency
0.5% of the rated motor frequency 1r/min
5% of the rated motor frequency
Rated motor frequency
MM-GKR: 200%, S-PM: 150%
0
6% of the rated motor frequency
Rated motor frequency
Rated motor current
Rated motor frequency
Rated motor frequency
Number of motor poles
Rated motor frequency  1.15
10% of the rated motor frequency
50% of the rated motor frequency
Rated motor current
9999
MM-GKR: 100%, S-PM: 15%
9999
9999
0.5% of the rated motor frequency 1r/min
6% of the rated motor frequency
S-PM S-PM
(2.2kW)
3000r/min (150Hz)
3000r/min (150Hz)
6
Setting
increments
3024, 3124,
6004 6104
1r/min 0.01Hz
1r/min 0.01Hz
1r/min 0.01Hz
1r/min 0.01Hz
0.01A
1r/min 0.01Hz
0.01Hz
1r/min 0.01Hz
1r/min 0.01Hz
0.1%
1
1r/min 0.01Hz
1r/min 0.01Hz
0.01A
1r/min 0.01Hz
1r/min 0.01Hz
1
1r/min 0.01Hz
1r/min 0.01Hz
1r/min 0.01Hz
0.01A
1%
1%
0.001s
1%
0.1ms
0.01Hz
1r/min 0.01Hz