Device description

L9409

10/13

Doc ID 022665 Rev 2

4.4

Protection and diagnosis

The table above lists the conditions that cause the fault lamp driver to function. To prevent

driver is activated. This delay is indicated in Figure 11.

4.4.1

Diagnostic electric parameters

Table 11.

Diagnostic electric parameters

Table 10.

Fault lamp driver to function

#

Conditions

Delay

1

alternator is not rotating

Yes

2

Yes

3

generation

Yes

4

generation

Yes

5

Yes

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

Low voltage warning threshold

-

5

6

7

V

Over voltage protection

threshold

-

15.1

16.5

17.5

V

S-terminal open threshold

-

7

-

12

V

Open threshold

-

1.6

2.0

2.2

V

Low speed threshold

-

130

145

160

V

Fault indication delay time

-

0.8

-

1.2

s