Specifications

EMC-CS-2009.1
© Copyright Ford Motor Company – All Rights Reserved Page 59 of 121
February 11, 2010
16.0 Immunity from Transient Disturbances: CI 220
These requirements are related to immunity from conducted transients on power and control circuits connected directly to the
vehicle's battery or indirectly by a switch or load (e.g. pull-up resistor). These requirements are applicable to the following
component categories:
Electronic Modules: A, AM, AX, AY
Electric Motors: EM
Passive Devices: P
(requirement may be waived via analysis. See section 6.0)
16.1 Requirements
Specific applicability of these transients and component performance requirements are listed in Table 16-1. In addition to
these requirements, the component shall not be affected (Status I) by transient voltages generated by result of its own
operation, including switching of inductive loads either internal or external to the device (i.e. Category AX).
Table 16-1: CI 220 Transient Immunity Requirements
Functional Performance Status
Transient
Pulse
( 1,2 ,3)
Application
( 2 )
Transient
Mode
( 1 ,3 )
Duration
Class A Class B Class C
Switched power supply
circuits with maximum
current < 5 amperes
Mode 1 120 sec II II II
Pulse A1
Input circuits Mode 2 20 sec II II II
Pulse A2-1
Switched power supply
circuits with maximum
current < 5 amperes
Mode 1 120 sec II II II
Pulse A2-1
Pulse A2-2
Input Circuits
Mode 2
Mode 3
20 sec II II II
Pulse C-1
Pulse C-2
All power supply circuits &
input circuits.
Mode 2
Mode 3
20 sec I I I
Switched power supply
circuits  5 amperes
II II II
Pulse E
Input circuits
n/a 24 pulses
II II II
Pulse F1
(5)
All power supply circuits Mode 1 5000 pulses I I I
Pulse F2
(5)
All power supply circuits Mode 1 10 pulses II II II
Pulse G1
( 4 )
Load Dump
All power supply circuits
Input circuits
n/a 5 pulses III III II
Pulse G2
Central
Load Dump
( 4 )
All power supply circuits
Input circuits
n/a 5 pulses III III II
1 See Annex D-1 for transient pulse and mode description.
2
See Annex E for requirements with respect to application of transient pulses.
3
See Annex F for test generator requirements to produce transient pulses A1, A2, and C.
4
Selection of Pulse G1 or G2 depends on whether vehicle application includes central load dump (CLD) protection.
Selection shall be approved by the FMC EMC group and documented in EMC test plan.
5
Pulses F1, F2 only applicable for components required to demonstrate compliance to ESA requirements of 72/245/EEC.