Specifications

EMC-CS-2009.1
© Copyright Ford Motor Company – All Rights Reserved Page 72 of 121
February 11, 2010
19.0 Immunity to Voltage Dropout: CI 260
These requirements are applicable to the following component categories:
Electronic Modules: A, AS, AM, AX, AY
Electronic Controlled Electric Motors: EM
19.1 Requirements
The component shall be immune from momentary voltage dropouts, which may occur over the life of the vehicle. Circuits
affected include all power supply and control circuits. These requirements also apply to components that are connected to a
regulated power provided by another module (e.g. sensors). Requirements are listed in Table 19-1. The purpose of this test is
the verification of controlled recovery of hardware and software from power interruptions.
Table 19-1: CI 260 Voltage Dropout Requirements
Functional Performance
Status
(2)
Waveform Application
Level Duration
Class A Class B Class C
A
Voltage Dropout:
High
All Power Supply and
Input Circuits
See Figure
19-1
3 cycles separated
by 20 s
II II II
B
Voltage Dropout:
Low
All Power Supply and
Input Circuits
See Figure
19-2
3 cycles separated
by 20 s
II II II
C
Single Voltage
Dropout
All Power Supply and
Input Circuits
See Figure
19-3
3 cycles separated
by 20 s
I I I
D
Voltage Dip
All Power Supply and
Input Circuits
See Figure
19-4
10 cycles separated
by 20 s
II II II
E
(1)
Battery Recovery
Limited to Power
Supply Circuits with
direct connection to
battery.
See Figure
19-5
2 cycles separated
by 20 s
II II II
F
Random Bounce
All Power Supply and
Input Circuits
(3)
See Figures
19-6, 19-7
60 s II II II
1 Applicable only to direct battery connections
2
Performance Status checked after each waveform cycle
3
Waveform F limited to power circuits with maximum current less than 5 amperes