Filter
Top Products
74
PM sensorless vector control
(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.
<PM motor specifications table>
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.
Parameter
number
Name
Setting value
Setting
increments
PM motor (rotations per minute) PM motor (frequency)
Pr.998
3024 (MM-GKR),
6004 (S-PM)
3124 (MM-GKR),
6104 (S-PM)
3024,
6004
3124,
6104
1
Maximum setting Maximum motor rotation speed Maximum motor frequency 1r/min 0.01Hz
4
Multi-speed setting (high speed) Rated motor rotation speed Rated motor frequency 1r/min 0.01Hz
5
Multi-speed setting (middle speed) 50% of the rated motor rotation speed 50% of the rated motor frequency 1r/min 0.01Hz
6
Multi-speed setting (low speed) 10% of the rated motor rotation speed 10% of the rated motor frequency 1r/min 0.01Hz
9
Electronic thermal O/L relay Rated motor current 0.01A
10
Coasting speed 3% of the rated motor rotation speed 3% of the rated motor frequency 1r/min 0.01Hz
13
Starting speed 0.5% of the rated motor rotation speed 0.5% of the rated motor frequency 1r/min 0.01Hz
15
Jog speed setting 5% of the rated motor rotation speed 5% of the rated motor frequency 1r/min 0.01Hz
20
Acceleration/deceleration reference
speed
Rated motor rotation speed Rated motor frequency 1r/min 0.01Hz
22
Torque limit level MM-GKR: 200%, S-PM: 150% 0.1%
37
Speed display 0 1
42
Speed detection 6% of the rated motor rotation speed 6% of the rated motor frequency 1r/min 0.01Hz
55
Speed monitoring reference Rated motor rotation speed Rated motor frequency 1r/min 0.01Hz
56
Current monitoring reference Rated motor current 0.01A
125(903)
Terminal 2 speed setting gain speed Rated motor rotation speed Rated motor frequency 1r/min 0.01Hz
126(905)
Terminal 4 speed setting gain speed Rated motor rotation speed Rated motor frequency 1r/min 0.01Hz
144
Speed setting switchover Number of motor poles + 100 Number of motor poles 1
374
Overspeed detection level Rated motor rotation speed 1.15 Rated motor frequency 1.15 1r/min 0.01Hz
453
High speed during home position
return
10% of the rated motor rotation speed 10% of the rated motor frequency 1r/min 0.01Hz
455
Home position return shifting speed 50% of the rated motor rotation speed 50% of the rated motor frequency 1r/min 0.01Hz
557
Current average value monitor signal
output reference current
Rated motor current 0.01A
730
Speed estimation P gain 9999 1%
820
Speed control P gain MM-GKR: 100%, S-PM: 15% 1%
821
Speed control integral time MM-GKR: 0.200s, S-PM: 0.333s 0.001s
824
Torque control P gain 9999 1%
825
Torque control integral time 9999 0.1ms
870
Speed detection hysteresis 0.5% of the rated motor rotation speed 0.5% of the rated motor frequency 1r/min 0.01Hz
885
Regeneration avoidance
compensation speed limit value
6% of the rated motor rotation speed 6% of the rated motor frequency 1r/min 0.01Hz
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.
MM-GKR
(0.1kW to 0.75kW)
S-PM
(0.1kW to 1.5kW)
S-PM
(2.2kW)
Rated motor rotation speed (frequency) 3000r/min (250Hz) 3000r/min (100Hz) 3000r/min (150Hz)
Maximum motor rotation speed (frequency) 3000r/min (250Hz) 3000r/min (100Hz) 3000r/min (150Hz)
Number of motor poles 10 4 6