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參數(shù)資料
| 型號(hào)： | LB11981 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | Three-Phase Sensorless Motor Driver |
| 中文描述： | 三相電機(jī)驅(qū)動(dòng)器傳感器 |
| 文件頁(yè)數(shù)： | 5/7頁(yè) |
| 文件大?。?/td> | 46K |
| 代理商： | LB11981 |
Truth Tables
Lock Detection Time Setting (automatic recovery mode)
No. 6656-5/7
LB11981
Pin 4 (LAT): Lock detection circuit mode switching
LAT
Mode
OPEN
Automatic recovery mode
“L”
Output latched in the off state when lock detected.
Pin 5 (INFR): Motor rotation direction switching
INFR
Mode
OPEN or “L”
Forward
“H”
Reverse
Pin 3 (LKC): Lock detection time setting capacitor connection
LKC
Mode
GND
Disabled
Capacitor inserted
Enabled
Pin 6 (LKO): Lock state detection signal (A pull-up resistor is required.)
[LKC pin]
The following formula gives the time, t1, from the point the motor speed is locked until the output is turned off.
t1[s] = C [μF]
×
4 [V] / 1 [μA]
The output off time, t2, is as follows.
t2[s] = C [μF]
×
2 [V] / 0.65 [μA]
The time, t3, following the output off state until the motor speed locked state is monitored, is as follows.
t3[s] = C [μF]
×
2 [V] / 1 [μA]
When pin 4 (LAT) is low (output off latching mode), after the t1 period lock state monitoring, the output is turned off
and the output is held in the off state until either the V
CC
or V
CC
M power supply is switched.
LKO
State
“H”
Lock not detected
“L”
Lock detected
t1
4 V
2 V
Start of lock detection
Output off period
t2
t3
ILB00050
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