參數(shù)資料
型號(hào): L9407F
廠商: 意法半導(dǎo)體
英文描述: CAR ALTERNATOR VOLTAGE REGULATOR
中文描述: 汽車(chē)發(fā)電機(jī)電壓調(diào)節(jié)器
文件頁(yè)數(shù): 8/11頁(yè)
文件大?。?/td> 124K
代理商: L9407F
L9407F
8/11
Table 1. FAULT DETECTION TABLE
The diagnostic result is disabled during the Soft-start delay time t_ST and the soft-start / soft attack timing t_SL
Figure 6. Output Voltage rise/fall time (DF, DF_MON)
Figure 7. Lamp on delay at Ign. switch turn on
Root Cause
Signal
Effect
Test detect
Alternator belt breaking
PH
Alternator disexcitation
VPH<VPHH & VA+<Vreg
Brushes open
PH
Alternator disexcitation
VPH<VPHH & VA+<Vreg
Driver Open
PH
Alternator disexcitation
VPH<VPHH & VA+<Vreg
Field interruption
PH
Alternator disexcitation
VPH<VPHH & VA+<Vreg
Field short circuit to the battery
PH
Alternator disexcitation
VPH<VPHH & VA+<Vreg
Field short circuit to the ground
DF
Overvoltage
DF<VS1 & VA+>Vreg
Battery discharge (Field Driver open)
A+
Undervoltage
VA+<Vreg
No fully excited
A+
Undervoltage
VA+<Vuv
Battery discharge
A+
Undervoltage
VA+<Vuv
90%
10%
t-RISE
t-TM
t-FALL
t-TD
DF
DF_MON
Voltage
Ign. sw
W/Lamp
Off
Off
On
On
L-t-D
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