VW-801-01.engl
Group Standard
VW 80101
2009-03
Class. No.: 8MA00
Descriptors:
assembly, electrical assembly, electronic assembly, test condition
Check standard for current issue prior to usage. The English translation is believed to be accurate. In case of discrepancies the German version shall govern. Numerical notation acc. to ISO practice. This electronically generated standard is authentic and valid without signature.
Page 1 of 52 Technical Responsibility Standards Department
Team Electrics/electronics EEXA/1 Dr. Jens Luhmann Phone: +49-5361-9-74479 EKTC/4 Dirk Beinker
EKTC
Electrical and Electronic Assemblies in Motor Vehicles General Test Conditions
Previous issues
VW 80101: 1987-06, 1988-08, 1992-01, 1993-04, 1994-05, 1995-06, 1998-01, 1999-06, 2000-09, 2001-04, 2003-05, 2004-07, 2005-06, 2006-10
Changes
The following changes have been made as compared to Volkswagen standard VW 80101, 2006-10:
─ "Reagents" replaced by "chemical agents"
─ Table 2: Specification of degree of protection changed
─ Section 2.6 sentence: "Temperature measuring points according to..." deleted ─ Section 3: Voltage values in Tables 4 and 5 changed ─ Tables 5 and 6: Hot start pulse added ─ Figure 2 updated
─ Section 3.4: "Backfeed" changed
─ Figure 4 "Voltage definitions" updated
─ Section 3.8: Reverse-polarity protection supplemented
─ Section 3.12: Amplitude of the superimposed alternating voltage supplemented ─ Section 3.12: Type of wobble changed ─ Figure 8: Title changed
─ Section 4.6: Purpose more precisely specified ─ Section 5.1.2: Omission clause added ─ Figures 20-22 Operating modes changed ─ Table 18 supplemented and revised
─
Table 2: VW 80108 added for determination of degree of protection
Q U E L L E : N O L I S
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Contents
Page 1Scope (3)
2General requirements (3)
2.1General requirements for electric/electronic components in the vehicle (4)
2.2Definition (5)
2.3Relevant areas for requirements and types of requirement for vehicles (6)
2.4Operating modes (8)
2.5Functional states (8)
2.6General test conditions (9)
3Electrical requirements (10)
3.1Operating voltage (10)
3.2Operating voltage dips (10)
3.3Voltage level: HIGH/LOW status assignment (13)
3.4Backfeed to terminal 15 (13)
3.5Function during undervoltage and overvoltage (14)
3.6Operating current (16)
3.7Closed-circuit current consumption and closed-circuit charge consumption (16)
3.8Reverse-polarity protection (17)
3.9Overcurrent resistance (18)
3.10Overvoltage protection during long-term operation (18)
3.11Overvoltage resistance during short-term operation (19)
3.12Superimposed alternating voltage (19)
3.13Slow decrease and increase of the supply voltage (20)
3.14Reset behavior at voltage dip (20)
3.15Short-circuit protection (21)
3.16Dielectric strength (22)
3.17Insulation resistance (23)
3.18Interruption (23)
3.19Voltage drops (24)
3.20Electromagnetic compatibility (EMC) (24)
4Mechanical requirements (25)
4.1Vibration (25)
4.2Mechanical shock test (33)
4.3Drop test (34)
4.4Crimp and plug connections (34)
4.5Plug-in connections on and in electric and electronic components in the vehicle (34)
4.6Pull-out strength (35)
5Climatic requirements (35)
5.1Constant-temperature test (35)
5.2Temperature cycle tests (36)
5.3Multi-stage temperature test (37)
5.4Resistance to open air weathering (38)
5.5Resistance to environmental factors (38)
5.6Thermal shock test with water (41)
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6.1Resistance to chemical agents (44)
7Endurance test (45)
7.1Endurance testing of electrical and electronic systems/components (45)
7.2Endurance testing of electromechanical systems/components (48)
7.3Component-specific endurance testing (51)
8Referenced standards (52)
1 Scope
Volkswagen standard VW 80101 specifies general test conditions for electrical, electromechanical and electronic components and systems in vehicles.
When referring to this standard in component-specific Technical Supply Specifications, drawings and Performance Specifications, Table 27 (Section 8) must be used and substantiated with the appropriate specifications in consultation with the responsible Volkswagen Group engineering de-partments.
requirements
2 General
The requirements apply to the entire operating voltage and operating temperature range.
The functions and test conditions required for the respective test must be permanently monitored and documented (at least temperature and supply voltage as well as switching performance, volt-age drops, load currents, closed-circuit current and bus messages including timing and content, etc., where applicable).
If test severity is not indicated, the standard requirements apply.
VW 80101 specifies values for temperature, vibration resistance and leak tightness for the relevant areas for requirements. Deviations due to the installation situation must be do-cumented in the Performance Specifications.
Requirements called out in drawings and Performance Specifications take precedence over component-specific Technical Supply Specifications.
Requirements specified in component-specific Technical Supply Specifications take pre-cedence over VW 80101.
Requirements called out in drawings, Performance Specifications and component-specific Technical Supply Specifications refer in principle to conditioned components/systems.
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2.1 General requirements for electric/electronic components in the vehicle
Table 1 – Tests according to VW 80101
The requirements apply to the entire operating voltage and operating temperature ranges. The functions and test conditions required during the respective test must be monitored continuously and documented. The test sequence must be observed.
Designation Specifications
acc. to VW 80101
Deviations from VW 80101
Operating temperature see Section 2.3 Storage temperature see Section 2.3 Operating voltage see Section 3.1 Test procedures acc. to VW 80101
Test designation
Testing required = X Testing not required = – Specifications for
tests acc. to
VW 80101
Notes to/
deviations from
VW 80101
Each component and each DUT must meet all requirements in the following test sequence.
Conditioning (aging in mechanically circulated air, without load) X
see Section 5.1.1
Low-temperature operation X see Section 5.1.2
High-temperature operation see Section 5.1.3 Temperature cycle with specified rate of change see Section 5.2.1 Dielectric strength see Section 3.16 Insulation resistance see Section 3.17 Endurance shock test for systems/components in
doors and lids see Section 4.2.1 Mechanical shock test for systems/components on
the body see Section 4.2.2 Vibration resistance X Acc. to relevant area for re-
quirements
see Section 4.1 Endurance test X see Section 7
The following tests can be carried out simultaneously after conditioning (aging in mechanically circulated air, without load).
Operating voltage dips see Section 3.2 Backfeed to terminal 15 see Section 3.4 Function during undervoltage and overvoltage X see Section 3.5 Voltage level: HIGH/LOW status assignment X see Section 3.3 Operating current see Section 3.6 Closed-circuit current consumption see Section 3.7 Reverse-polarity protection X see Section 3.8 Overcurrent resistance see Section 3.9 Overvoltage protection during long-term operation see Section 3.10 Overvoltage protection during short-term opera-
tion
(external start simulation)
see Section 3.11
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Slow decrease and increase of the supply voltage see Section 3.13 Reset behavior at voltage dip see Section 3.14 Short-circuit protection see Section 3.15 Interruptions X
see Section 3.18 Voltage drops see Section 3.19 Interference emission acc. to TL 965 see Section 3.20.2 Conducted interference acc. to TL 82066 see Section 3.20.1 Radiated interference acc. to TL 82166 see Section 3.20.3 Interference immunity of sensor lines acc. to
TL82366 see Section 3.20.1.3 Immunity to electrostatic discharges acc. to
TL 82466 see Section 3.20.4 Drop test see Section 4.3 Crimp and plug connections see Section 4.4 Push-on connections on and in electric and elec-
tronic components in the vehicle see Section 4.5
Pull-out strength see Section 4.6 Temperature shock test in air see Section 5.2.2 Multi-stage temperature test see Section 5.3 Resistance to open-air weathering see Section 5.4
X see Section 5.5.1 Sealing against dust and spray water acc. to
DIN 40050-9, subsequently (using the same DUTs)
Moist heat, cyclic X
see Section 5.5.3
Salt spray fog see Section 5.5.4 Thermal shock test with water see Section 5.6 Resistance to chemical agents X see Section 6.1 Engine cleaning (test IP X9K) see Section 5.5.2
2.2 Definition
2.2.1 Terms
System Functionally linked components, e.g. ABS system, ESP system
Component Part of a functionally linked system, e.g. actuator, sensor, control unit
DUT The system or component to be tested (device under test)
Functions System-specific and diagnostic functions
2.2.2 Abbreviations
I N Nominal
current
T NH The post-heating temperature is the maximum ambient temperature occurring in the relevant area for requirement (see Table 2) after vehicle cut-off.
T oL The maximum storage temperature is the highest temperature which is permissi-
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operated.
T RT Room temperature (+23 ± 5) °C; if not otherwise specified, this is the test tem-perature
T uB , T oB The minimum/maximum operating temperature is the lowest/highest ambient temperature at which the DUT may be continuously operated. Self-heating is not
taken into account.
T uL The minimum storage temperature is the lowest temperature which is permissible for storage or transportation of the DUT. The DUT is not operated.
U Bmax Maximum operating voltage at which the DUT can be continuously operated.
U Bmin Minimum operating voltage at which the DUT can be operated.
voltage
U N Nominal
U PA Test voltage at running engine
U PB Test voltage at battery operation
U PC Test voltage for reverse-polarity battery connection with external start
2.3 Relevant areas for requirements and types of requirement for vehicles
See Figure 1 and Table 2.
9 Passenger
11 Roof and rear end,
2 Engine compartmen
10 Chassis
Figure 1 – Relevant areas for requirements on the vehicle
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VW 80101: 2009-03 Table 2 – Relevant areas for requirements and types of requirement
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2.4 Operating modes
The following operating modes are distinguished: 2.4.1 Operating mode 1 The DUT is not electrically operated.
─ Operating mode 1.1
No lines are connected to the DUT.
─
Operating mode 1.2
All lines are connected according to vehicle installation, but no voltage is applied.
2.4.2 Operating mode 2
The DUT is electrically operated with the supply voltage U PB (battery voltage) as in a cut-off vehicle (engine OFF).
All system components (e.g. sensors, actuators) and lines are connected to the DUT.
─ Operating mode 2.1 System/component functions are not activated (e.g. sleep mode).
─
Operating mode 2.2
Systems/components with function and activation in normal op-erating mode.
2.4.3 Operating mode 3
The DUT is operated with the supply voltage U PA (engine/alternator running).
All system components (e.g. sensors, actuators, switches) including mechanical components and electric lines are connected to the DUT.
─ Operating mode 3.1 System/component functions are not activated.
─
Operating mode 3.2
Systems/components with function and electrical activation in normal operating mode.
2.4.4 Laboratory setup operating mode
Same as operating mode 3.2, but test voltage and electrical load according to the respective test. 2.5 Functional states
This Section describes the functional status of the DUT during and after the test.
The functional status of the DUT is to be specified for each test. Additional requirements are to be defined and documented in the Performance Specifications. 2.5.1
Functional status A
All functions of the DUT perform as specified during and after exposure to the test parameters.
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2.5.2 Functional status B
All functions of the DUT perform as specified during exposure to the test parameters; however, one or more of them can go beyond the given tolerance. All functions return to normal operation after the end of test parameter exposure. Memory functions must perform according to functional sta-tus A.
2.5.3 Functional status C
One or more functions of the DUT do not perform as specified during exposure to the test parame-ters but return automatically to normal operation after the end of exposure.
Undefined functions are not permitted.
2.5.4 Functional status D
One or more functions of the DUT do not perform as specified during exposure to the test parame-ters; however, after resetting or a simple technical measure (e.g. exchanging a defective fuse) the DUT returns to normal operation after the end of exposure.
Undefined functions are not permitted.
2.5.5 Functional status E
One or more functions of the DUT do not perform as specified during and after exposure to the test parameters; after the end of exposure the DUT has to be repaired or replaced.
Undefined functions are not permitted.
2.6 General test conditions
A minimum of 6 DUT are to be tested. For increased requirements at least 10 DUT are to be tested.
All tests are performed using DUT that have already been conditioned (conditioning see Sec-tion 5.1.1).
If tolerances are not specified for temperatures, a tolerance of ± 2 °C applies.
Unless otherwise specified, all testing is performed at room temperature T RT and a relative air hu-midity of 25 to 75 %.
Test voltages must be in accordance with Table 3. Other test voltages are only permissible after consultation with the responsible Volkswagen Group engineering departments. The test voltages must be documented in the test report.
Table 3 – Test voltages
Test voltage 1) 12-V
systems
(V) 24-V systems
(V)
U PA14 ± 0,1 28 ± 0,2
U PB12 ± 0,1 24 ± 0,2 1) Test voltage applied to the DUT
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3 Electrical requirements 3.1 Operating voltage For operating voltages see Table 4.
Table 4 – Voltages and notes for application
Nominal voltage
U N
(V) Operating voltage U Bmin U Bmax (V) (V)
Notes for application 12 6,0 16
for functions that must retain their per-formance during ignition
12 9,0 16
for functions that must retain their per-formance with the engine cut off
12 9,8 16
for functions that must retain their per-formance during engine operation
24 above values each multiplied by 2
groups as with nominal voltage 12 V
NOTE: Operating voltage applied to the DUT.
Ability to function in the network for network DUT must be ensured according to voltage specifica-tions from network Performance Specifications. 3.2 Operating voltage dips
Aim
This test simulates fast dips (ramps) of the operating voltage that might occur. Test
The supply voltage curve represented in Figure 2 must be tested for all DUT that are directly fed by the power supply system.
For specifications of voltage values, time curve and number of test cycles see Table 5. All voltage curves specified in Table 5 are to be tested.
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Figure 2 – Voltage curve for DUT directly fed by the power supply system
U
U B
U S U T
t f
5 4 6t 8
t
U A 7
t r
t 50
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Table 5 – Levels / voltages / durations of the voltage curve
Voltage curve No.
1
2
3
4
5 6
7
8 9 10
Typical voltage curve for engaging starter
motors
Standard ignition voltage pulse Sharp ignition voltage pulse
Mini-mum operat-ing voltage of igni-tion-relevant electrical loads Ramp 1 Ramp 2 Ramp 3 Hotstart pulse
Toler-ance
U B 12 V 12 V 12 V 11 V 12 V 12 V 12 V 12 V 11 V 11 V U T 5 V 3 V 4,5 V 3 V 6 V 3 V 3 V 3 V 7 V 7 V U S 5 V 3 V 4,5 V 3 V 6 V 3 V 3 V 3 V 8 V 8 V U A 6,5 V 5 V 6,5 V 5 V 6,5 V 3 V 3 V 3 V 9 V 9 V U R 0 V 0 V 2 V 2 V 2 V 0 V 0 V 0 V 0 V 0 V +0,2 V
t 50 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms ≥ 10 ms ≥ 10 ms t f ≤ 1 ms ≤ 1 ms ≤ 1 ms ≤ 1 ms ≤ 5 ms ≤ 5 ms ≤ 5 ms ≤ 5 ms ≤ 1 ms ≤ 1 ms t 4 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms 15 ms 15 ms t 5 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms 0 ms 70 ms 70 ms t 6 19 ms 19 ms 19 ms 19 ms 15 ms 15 ms 15 ms 15 ms 300 ms 300 ms t 7 50 ms 50 ms 50 ms 50 ms 50 ms 50 ms 50 ms 50 ms 10 ms 10 ms t 8 2 s 1 s 10 s 1 s 10 s 100 ms 1 s 10 s 500 ms 500 ms t r 100 ms 100 ms 100 ms 100 ms 100 ms 100 ms 1 s 10 s ≤ 1 ms ≤ 1 ms f 2 Hz 2 Hz 2 Hz 2 Hz 2 Hz 2 Hz 2 Hz 2 Hz
2 Hz
2 Hz
±10 % Test cycles 10
10
10
10
10
10
10
10 10 100
Interval between cycles
1 s –
2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s 1 s – 2 s 5 s 20 s ±10 %
NOTES: All voltage curves are to be regarded as envelopes and serve as examples. In the case of voltage curves 6, 7 and 8 the frequency specification serves to simplify testing.
Requirements See Table 6.
Table 6 – Functional states
Voltage curve No. 1
2
3
4
5
6
7
8 9 10
Operating voltage (V) Note
U min.
U max. Functional states
6 16 A 1
) B 1
) A 1
) B 1
) A 1
) C 1
) C C A 1
) A 1
) Power consuming
devices relevant
during engine ign.
9 16 C 1
) C 1
) C 1
) C 1
) C 1
) C 1
) C C B 1) B 1
) Standard 9,8 16 C 1)
C 1)
C 1)
C 1)
C 1)
C 1)
C
C B 1
) B 1
)
Blanked out during
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VW 80101: 2009-03
3.3 Voltage level: HIGH/LOW status assignment
For DUT not containing a defined interface the voltage levels are assigned to the input states as follows:
See Table 7.
Table 7 – Assignment of voltage levels to input states
Status Voltage threshold Test voltage
HIGH status U ≥ U Bmin – 2 V U Bmin – 1 V
Transition area U Bmin – 3 V
3 V
LOW status U ≤ 2 V 1 V
The transition from LOW to HIGH and vice versa must only take place if the voltage exceeds the level or falls below the level defined here.
The following applies to all devices using CAN/MOST communication:
Voltage levels when connected to terminal 15, see Table 8.
Table 8 – Voltage levels when connected to terminal 15
Status Voltage threshold Test voltage
HIGH status U ≥ 4 V 5 V
Transition area 3 V
LOW status U ≤ 2 V 1 V
3.4 Backfeed to terminal 15
Aim
This test consists of a simulation of the DUT's behavior on terminal 15 and must be carried out with all components connected to terminal 15.
Testing
The DUT is connected identical to the wiring situation in the vehicle (including sensors, actuators, etc.) and operated in normal mode (terminal 15 ON).
The voltage curve on terminal 15 is measured when it is cut off. The terminal can be cut off by means of a relay or a switch (R open_switch→∞). Other possible voltage sources such as terminal 30, for example, must not be interrupted/cut off during the test (according to the behavior in the vehi-cle). Other resistors on terminal 15 are not permitted for this test.
The voltage curve on terminal 15 is evaluated with an external resistor of ≥ 10 M? (e. g., oscillo-scope) to terminal 31.
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Figure 3 – Measuring setup for backfeed to terminal 15
Operating mode Laboratory setup
Test voltage U Bmax - 0,2 V
Test temperature T uB, T RT and T oB
Requirement
Backfeed to terminal 15 is permissible up to a maximum voltage level of 1,0 V only.
The voltage on the unconnected terminal 15 must decrease below a voltage of U terminal 15 = +1 V within t = 20 ms from the cutoff.
For the voltage curve, a decreasing course is permissible. Upward deviating discontinuities (e. g., voltage peaks) are not permissible.
3.5 Function during undervoltage and overvoltage
When detecting overvoltage or undervoltage, the DUT changes into secure state, i.e. no undefined function must appear during a phase of overvoltage or undervoltage. All functions of the DUT au-tomatically return to normal operation after returning into the operating voltage range.
Functional restrictions must be specified in the drawing or in the Performance Specifica-tions.
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Figure 4 – Voltage definitions of network systems with a nominal voltage
of 12 V
The following applies to all control units relevant during engine ignition which have to be operable between 6 and 26 V: No error log entries due to other control units which do not have to be oper-able any more in the overvoltage and undervoltage range.
A suitable hysteresis of ≤ 0,5 V must be used in the transition from overvoltage or undervoltage to the operating voltage range.
NOTE 1: Undervoltage range: Functions that must retain their performance during ignition are to be defined in the Performance Specifications.
NOTE 2: Overvoltage range: Functions that must retain their performance during ignition (e.g. ex-ternal start simulation) are to be defined in the Performance Specifications.
NOTE 3: For directly connected bulbs, the requirement: "Functional status A for t < 1 s in the volt-age range from 16,5 to 17 V" does not apply.
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3.6 Operating current
The current change rate must be ≤ 20 A/s for DUT with a power draw ≥ 350 W. Otherwise, release by the responsible Volkswagen Group engineering department is required. Operating mode 3.2
3.7
Closed-circuit current consumption and closed-circuit charge consumption
Closed-circuit charge consumption is calculated as an integral of current consumption from the time of disconnection of terminal 15 extrapolated until 50 days after terminal 15 OFF. In this con-text, for all conceivable at-rest conditions of the vehicle, the highest possible closed-circuit charge consumption of the DUT is to be considered. The closed-circuit current equivalent is the current that results from the closed-circuit charge consumption divided by 50 days. See Figure 5.
Figure 5 – Closed-circuit charge consumption
The closed-circuit-current draw for any DUT must be 0 mA. A closed-circuit-current equivalent of < 0,1 mA at rest only applies to such DUT which must be operated after terminal 15 has been swit-ched OFF. The closed-circuit charge consumption per DUT must not exceed 0,12 Ah within 50 days down-time. This charge consumption also applies to the necessary post-operation after dis-connection of terminal 15.
Otherwise, release by the Volkswagen Group engineering department responsible for closed-circuit current management is required. Operating mode
2.1
I
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VW 80101: 2009-03 3.8 Reverse-polarity
protection
Aim
The resistance of the DUT against reverse-polarity battery connection during external starting is simulated. This test is not applicable to the following components:
─Alternators
─Relays with fixed diodes, without external reverse-polarity protection
─Components which are not subjected to polarity reversal in the vehicle under any circum-stances
Testing
The DUT is connected in the same way as it is in the vehicle with regard to wiring and fuse protec-tion. A test voltage with reversed polarity is applied to all voltage inputs as well as all other terminals which are connected to the supply voltage.
The outputs must not be activated.
Operating mode Laboratory setup
Test duration (60 ± 6) s
Test voltage (see Table 9) according to the following applications:
Case 1:
Application with non-protected alternator.
Test voltage = U PC
Case 2:
Application with protected alternator.
Test voltage = U PA
Table 9 – Test voltages for reverse-polarity resistance
Nominal voltage
(V) U PA
(V)
U PC
(V)
12 14 ± 0,1 4 ± 0,1
Requirement
When reversed polarity is applied, no safety-relevant functions must be triggered, e.g. for electric windows, electric sunroof, starter, etc.
During reverse-polarity testing, the permissible limit values specified in the data sheet (electrical and thermal) must not be exceeded for any of the components.
The fuse rated current of the vehicle fuse system must not be exceeded during the test.
The reverse polarity must not cause pre-damage or hidden damage on the components.
The reverse-polarity resistance also applies to any voltage from 0 V to maximum testing voltage. Reverse-polarity resistance must be in compliance with functional status C.
The current draw during the test must be documented.
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resistance
3.9 Overcurrent
3.9.1 Mechanical switches and contacts
Aim
The overcurrent protection of mechanical switches and contacts is simulated.
Test (for mechanical switches and contacts only)
Operating mode Laboratory setup
Load holding time 10 min
Load at I N≤ 10 A 3 x I N
Load at I N > 10 A 2 x I N but min. 30 A and max. 150 A
(switch ON and OFF once under load)
Each contact must be tested individually in the case of multiple-contact relays and multiple-contact switches.
Requirement
Functional status A.
outputs
3.9.2 Electronic
Aim
The overcurrent protection of electronic outputs is simulated.
Test
Operating mode Laboratory setup
Load holding time 30 min
Current load 3 x I N
Requirement
All electronic outputs must be protected against overcurrent as required in Performance Specifica-tions.
Functional status C.
3.10 Overvoltage protection during long-term operation
Aim
A defective voltage regulator on the alternator is simulated.
Test
Operating mode Laboratory setup
Temperature T = (T oB – 20 °C)
Test voltage 17 V -0,2 V
Test duration 60 min
Test voltage application on all voltage inputs.
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VW 80101: 2009-03
Requirement
Functional status A for all functions necessary for driving operation.
At least functional status C for all remaining functions.
3.11 Overvoltage resistance during short-term operation
Aim
An external start with increased voltage (jump start) is simulated.
Test
Operating mode Laboratory setup
Test voltage 26 V -0,2 V
Test duration 60 s
Test voltage application on all voltage inputs.
Requirement
Functional status A for all functions necessary for starting the vehicle.
At least functional status C for all remaining functions.
3.12 Superimposed alternating voltage
Aim
An alternating voltage superimposed on the operating voltage is simulated.
Test
Operating mode Laboratory setup
Test voltage 13 V
Amplitude of the superimposed
alternating voltage (sinusoidal) U = 1 V
for devices on terminal 29: U = 3 V
Internal resistance of
voltage source ≤ 100 m?
Frequency range 50 Hz to 20 kHz
Type of wobble triangle, logarithmic
Wobble duration 2 min
Test duration 10 min
Requirement
Functional status A.
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3.13 Slow decrease and increase of the supply voltage
Aim
A slow discharging and charging of the battery is simulated.
Test
Operating mode Laboratory setup
Test voltage application on all voltage inputs.
Supply voltage decrease from U Bmax to 0 V.
Supply voltage increase from 0 V to U Bmax.
Voltage change (0,5 ± 0,1) V per minute
Requirement
Functional status A within the operating voltage range.
Functional status C outside the operating voltage range.
3.14 Reset behavior at voltage dip
Aim
The reset behavior of the DUT is simulated at different voltage dips. This test applies to DUT with reset function (normally DUT with a microcontroller).
Test
Operating mode Laboratory setup
Test procedure for ≥ 10 s s et U Bmin
Cycle for 5 s lower the operating voltage U Bmin by 0,5 V
for ≥ 10 s set U Bmin and test the function of the DUT
The voltage is lowered by a further 0,5 V in each cycle (see Figure 6).
The test comes to an end as soon as the voltage reaches ≤ 0,5 V. The voltage change takes place within 100 ms.