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RAA306012 RSSK User's Manual
3.4
120-degree Conducting Control Using Hall Sensors
3.4.1
Control Specifications
The 120-degree conducting control using Hall sensors is a method that controls the motor by switching the
energized phase according to the Hall signal.
This motor control method can be evaluated by using the RL78/G1F Control Board.
Table 3-4 shows the control specifications.
For details of the specifics of the program, please refer to the "RAJ306102 Application Note: 120-degree
Conducting Control of Permanent Magnetic Synchronous Motor (Implementation) (R18AN0062EJ)".
Table 3-4 Basic Specifications of 120-degree Conducting Control Using Hall Sensors
Item
Control method
Motor rotation start/stop Determined depending on the level of SW101 ("High": rotation start "Low": stop)
Position detection of
rotor magnetic pole
Input voltage
Main clock frequency
Carrier frequency
(PWM)
Dead time
Control cycle
Rotational speed
control range
Optimization
Processing stops for
protection
Note.1: Please refrain from driving motor overrated speed for a long period.
R12UZ0128EJ0100
Rev.1.00
Nov 1, 2023
with RL78/G1F Control Board
Content
120-degree conducting method (chopping upper arm)
or input from Renesas Motor Workbench
Hall effect sensor: Position detection based on interruption of signal from Hall
effect sensors (every 60 degrees)
When position of rotor is detected, PWM duty and conducting pattern are set at
same time.
DC 24[V]
CPU clock: f
32[MHz]
CLK
TRD clock: f
64[MHz]
HOCO
20[kHz]
2[μs]
Speed PI control: every 1[ms]
Hall effect sensor control mode: 530[rpm] to 3200[rpm]
CW and CCW are supported
Default
Disables the motor control signal output (six outputs), under any of the following
conditions.
1. Inverter bus voltage exceeds 28[V] (monitored per 1[ms])
2. Inverter bus voltage is less than 15[V] (monitored per 1[ms])
3. Rotational speed exceeds 3900[rpm] (monitored per 1[ms])
4. Hall effect sensor interruptions are not detected for 200[ms].
5. Detection of unexpected output voltage pattern
6. Detection of overcurrent by external circuit (low-level input)
7. Fault detection of RAA306012
3. Usage
(Note,1)
Page 43 of 76
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