ISO 7637-2:2004 Background Voltage Transient Emission Setup Requirement Transient Immunity Setup up Requirement Performance Criteria emitel AG •Ohmstrasse1 •94342 Strasskirchen •GERMANY November 2008 Page 2 of 25 Background ISO 7637-2:2004 Road vehicles – Electrical disturbances from conduction and coupling Part 2: Electrical transient conduction along supply lines only Transient source in the Car: - Inductive load - Switching process - Sudden interruption of current - energizing the starter -motor circuit of the internal combustion engines - Load dump transient emitel AG •Ohmstrasse 1 •94342 Strasskirchen •GERMANY November 2008 Page 3 of 25 Background Government, 72/245/EC, 2004/104/EC, 2006/96/EC World trade Committee, ECE R10.03 Manufacturer Requirement, BMW, GS 95002 Equipment installed on passenger cars and light commercial vehicles 12V or 24V vehicles system Bench Test Standard emitel AG •Ohmstrasse 1 •94342 Strasskirchen •GERMANY November 2008 Page 4 of 25 Background Vehicles Vehicles Electrical / Electronical Subassemblies Electrical / Electronical Subassemblies emitel AG •Ohmstrasse 1 •94342 Strasskirchen •GERMANY November 2008 Page 5 of 25 Voltage Transient Emission Test emitel AG •Ohmstrasse 1 •94342 Strasskirchen •GERMANY November 2008 Page 6 of 25 Device generate the conducted emission of transient for the switching process. All wiring and Device 50mm above the ground plane Switch Close, Switch Open, Change of State Slow pulse (ms range or slower) and Fast pulses (ns to ms range) In 2004/104/EC and ECE R10.03, no switch or no inductive load device is exempted
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ISO7637-2 Electrical Transient Conduction Along Supply of Road Vehicles
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emi te l AG • Ohmstrasse1 • 94342 Strasskirchen • GERMANY November 2008 Page 2 of 25
Background
ISO 7637-2:2004 Road vehicles – Electrical disturbances from conduction and couplingPart 2: Electrical transient conduction along supply lines only
Transient source in the Car:- Inductive load- Switching process- Sudden interruption of current- energizing the starter -motor circuit of the internal combustion engines- Load dump transient
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Voltage Transient Emission Test
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Device generate the conducted emission of transient for the switching process.
All wiring and Device 50mm above the ground plane
Switch Close, Switch Open, Change of State
Slow pulse (ms range or slower) and Fast pulses (ns to ms range)
In 2004/104/EC and ECE R10.03, no switch or no inductive load device is exempted
Voltage Transient Emission Test
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Voltage Transient Emission Test
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Voltage Transient Emission Test
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Voltage Transient Emission Test
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Transient Immunity Test
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Susceptibility of Transient Emission
Pulse 1Pulse 2a and Pulse 2bPulse 3a and Pulse 3bPulse 4Pulse 5a and Pulse 5b
Pulses 3a and 3b, 0.5m between terminal and Device and 50mm above the ground plane.
Evaluate the device during and after test.
Pulse 1
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Simulation of transients due to supply disconnection from inductive loads
Pulse 2a
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Simulate transients due to sudden interruption of currents in a device connected in parallel with Device due to inductance of wiring harness
Pulse 2b
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Simulate transients from d.c. motor acting as generators after the ignition is switched off
Pulse 3a
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Simulation of transients which occur as a result the switching process
Pulse 3b
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Simulation of transients which occur as a result the switching process
Pulse 4
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Simulate supply voltage reduction caused by energizing the startSimulate supply voltage reduction caused by energizing the start erer--motor circuit of internal motor circuit of internal combustion engines, excluding spikes associated with startingcombustion engines, excluding spikes associated with starting
Pulse 5a
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Simulation of the load dump transientSimulation of the load dump transient
Pulse 5b
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Simulation of the load dump transientSimulation of the load dump transient
E.gE.g UUss** = 80V, U= 80V, Uss
** = 32V for BMW= 32V for BMW
Conducted Transient Immunity for ESA
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Conducted Transient Immunity for ESA
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Example criteria from 2004/104/EC
emitel AG • Ohmstrasse 1 • 94342 Strasskirchen • GERMANY
Test pulse numberTest pulse number Immunity test levelImmunity test level Functional status for systemsFunctional status for systems
Related to Immunity related functions
Not related to Immunity related
functions
1 III C D
2a III B D
2b III C D
3a / 3b III A D
4 III B(for ESA which must be operational
during engine start phase)
C(for other ESA’s)
D
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Immunity Requirements
emitel AG • Ohmstrasse 1 • 94342 Strasskirchen • GERMANY
Class A: all functions of a device or system perform as designed during and after exposure to a disturbance
Class B: all functions of a device or system perform as designed during exposure; however, one or more of them may go beyond the specified tolerance. All functions return automatically to within normal limits after exposure is removed. Memory functions shall remain class A.
Class C: one or more functions of a device or system do not perform as designed during exposure but return automatically to normal operation after exposure is removed.
Class D: one or more functions of a device or system do not perform as designed during exposure and do not return to normal operation until exposure is removed and thedevice/system is reset by simple “operator/use” action.
Class E: one or more functions of a device or system do not perform as designed during and after exposure and cannot be returned to proper operation without repairing or replacing the device/system.
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