Omron RX Series - Sensorless Vector Control; Sensorless Vector Control Parameter Settings; 0-Hz Sensorless Vector Control Parameter Settings

6 Vector Control
6 - 4
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
6-2 Sensorless Vector Control
• Set the 1st/2nd Control Method (A044/A244) to 03 (Sensorless vector control).
• Set the 1st/2nd Motor Capacity (H003/H203) and the 1st Motor Pole Number (H004/H204) according
to your motor.
• In the 1st/2nd Base Frequency (A003/A203), set the rated frequency of the motor. In the Motor Rated
Voltage Selection (A082), set the rated voltage of the motor.
• To use this function, be sure to set the motor parameters appropriately according to
6-2-3 Auto-tuning
of Motor Parameters on page 6-5.
• Set the 1st/2nd Control Method (A044/A244) to 04 (0-Hz sensorless vector control).
• Set the 1st/2nd Motor Capacity (H003/H203) and the 1st Motor Pole Number (H004/H204) according
to your motor.
• In the 1st/2nd Base Frequency (A003/A203), set the rated frequency of the motor. In the Motor Rated
Voltage Selection (A082), set the rated voltage of the motor.
• To use this function, be sure to set the motor parameters appropriately according to 6-3-4 Auto-tuning
of Motor Parameters on page 6-18.
• Use the 1st/2nd Limit at 0 Hz (H060/H260) to set the current under constant current control in a 0-Hz
range (approximately 3.0 Hz or less). Set this as a percentage of the rated current of the inverter.
• In the 1st Boost Amount at SLV Startup, 0 Hz (H061/H261), set the amount of current boost during
startup. Set this as a percentage of the rated current of the inverter. The value set here will be added
to the value set in the 1st Limit at 0 Hz (H060/H260) during startup only.
• 0-Hz sensorless vector control cannot be used in the light load mode. Be sure to set the Heavy
Load/Light Load Selection (b049) to 00 (Heavy load mode).
6-2-1 Sensorless Vector Control Parameter Settings
Parameter
No.
Function name Data Default data Unit
A044/A244
1st/2nd Control Method
*1
*1. To enable the switching to the 2nd control, allocate one of the Multi-function Input S1 to S8 Selection (C001 to
C008) to 08 (SET) and turn ON that terminal.
03: Sensorless vector control
*2
*2. Sensorless vector control can be selected for the 1st/2nd control only.
00 –
H003/H203 1st/2nd Motor Capacity
0.2/0.4/0.55/0.75/1.1/1.5/2.2/3.0/3.7/4.0/
5.5/7.5/11.0/15.0/18.5/22/30/37/45/55/
75/90/110/132
Maximum
applicable
motor capacity
kW
H004/H204
1st/2nd Motor Pole
Number
2/4/6/8/10 4 pole
A003/A203 1st/2nd Base Frequency
30. to 1st/2nd Maximum Frequency
(A004/A204)
60 Hz
A082
Motor Rated Voltage
Selection
200-V class: 200 V/215 V/220 V/230 V/
240 V
200 V
400-V class: 380 V/400 V/415 V/440 V/
460 V/480 V
400 V
6-2-2 0-Hz Sensorless Vector Control Parameter Settings