CAB 1500 APPLICATION NOTESINFORMATION IN THIS DOCUMENT SHOULD BE USED AS REFERENCE, THEY ARE NOT GUARANTEED VALUESTABLE OF CONTENTS
1REVISION HISTORY...................................................................................................................................... 42

CLARIFICATION ........................................................................................................................................... 4

3

REFERENCE ................................................................................................................................................. 4

4

ABBREVIATION ........................................................................................................................................... 45

E2E CRC ...................................................................................................................................................... 4
5.1

AIM .................................................................................................................................................................... 4

5.2

REFERENCE .......................................................................................................................................................... 4

5.3

CAB 1500 SERIES EXCEPT CAB-SF 1500-002 ...................................................................................................... 4

5.3.1

Data layout ................................................................................................................................................ 4

5.3.2

Counter ...................................................................................................................................................... 5

5.3.3

DataID ....................................................................................................................................................... 5

5.3.4

CRC calculation .......................................................................................................................................... 5

5.4

6

7

CAB-SF 1500-002............................................................................................................................................... 6

5.4.1

Data layout ................................................................................................................................................ 6

5.4.2

Counter ...................................................................................................................................................... 7

5.4.3

Danaids ...................................................................................................................................................... 7

5.4.4

CRC calculation .......................................................................................................................................... 7

POWER SUPPLY INSTRUCTION..................................................................................................................... 8
6.1

AIM .................................................................................................................................................................... 8

6.2

STATUSPOWERSUPPLY ........................................................................................................................................... 9

6.3

CURRENT CONSUMPTION ..................................................................................................................................... 10

6.4

INPUT PEAK CURRENT........................................................................................................................................... 10

CAN PARAMETER CONFIGURATION ............................................................................................................11
7.1

AIM .................................................................................................................................................................. 11

7.2

FUNCTION REQUIREMENT ..................................................................................................................................... 11

7.2.1

Communication interface ........................................................................................................................ 11

7.2.2

Parameter Access Protocol ...................................................................................................................... 11

7.3

UDS SOFTWARE SPECIFICATION ..................................................................................................................... 12

7.3.1

Diagnostic service list .............................................................................................................................. 12

7.3.2

Diagnostic and Communication Management Functional Unit .............................................................. 13

7.4

EXAMPLE ........................................................................................................................................................... 15

7.4.1

Example Read software version .............................................................................................................. 15

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7.4.2
8

Example Change CAN ID .......................................................................................................................... 16

RETURN BUSBAR .......................................................................................................................................16
8.1

AIM .................................................................................................................................................................. 16

8.2

NOTES............................................................................................................................................................... 16

8.3

BUSBAR SHAPES RECOMMENDATION ...................................................................................................................... 16

9

8.3.1

Straight busbar ........................................................................................................................................ 18

8.3.2

S shape busbar......................................................................................................................................... 18

8.3.3

L shape busbar......................................................................................................................................... 20

8.3.4

C1 shape busbar ...................................................................................................................................... 21

8.3.5

C2 shape busbar ...................................................................................................................................... 23

CURRENT RIPPLE ........................................................................................................................................26
9.1

AIM .................................................................................................................................................................. 26

9.2

CAB 1500 CURRENT SENSOR ON-POWER................................................................................................................ 27

9.3

CAB 1500 CURRENT SENSOR OFF-POWER ............................................................................................................... 27

10

INTERNAL ERROR INFORMATION ............................................................................................................27

11

ACCURACY WITH 1 AND 10 CAN FRAMES AVERAGE .................................................................................28

11.1

AIM............................................................................................................................................................... 28

11.2

10 CAN FRAMES AVERAGE ACCURACY ................................................................................................................ 28

11.2.125degC performance ............................................................................................................................... 28

11.2.2-40degC performance .............................................................................................................................. 29

11.2.185degC performance ............................................................................................................................... 30

11.3

1 CAN FRAME AVERAGE ACCURACY.................................................................................................................... 31

11.3.125degC performance ............................................................................................................................... 31

11.3.2-40degC performance .............................................................................................................................. 32

11.3.385degC performance ............................................................................................................................... 33

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1 Revision history
Rev

Date

Who

Change and updates

02/Jun/2023

hjc

Creation

2 CLARIFICATIONInformation in this document should be used as reference, they are not guaranteedvalues.

3 Reference
Document

VersionISO 15765-2:2011Road vehicles —Diagnostic communication over Controller
AreaNetwork (DoCAN)

2011-10-15

Part 2: Transport protocol and network layer services
ISO 14229-1:2013Road vehicles —Unified diagnostic services (UDS)

2013-03-15

Part 1: Specification and requirements

4 AbbreviationCAN: Controller Area Network
UDS: Unified Diagnostic Services
CRC: Cyclic Redundancy Check
ECU: Electronic Control Unit

5 E2E CRC
5.1 Aim

Aim to clarify CAB1500 Series E2E Protection Instruction.

5.2 Reference

Refer to 'AutoSAR_PRS_E2EProtocal' profile 1

5.3 CAB 1500 SERIES EXCEPT CAB-SF 1500-002
5.3.1



Data layout
CRC is the 7th byte in the signal group
Alive counter locates in highest 4 bits of 0th byte

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5.3.2




5.3.3




5.3.4

Counter
Initialized with 0 for the first CAN frame transmission
Incremented by 1 for every subsequent send request
When the counter reaches the value 15, then it shall restart with 1 for the next sendrequestDataIDE2E_P01_DATAID_LOW: only the low byte is included, and high byte is never used.
DataId configurable
Default value: 0xFFFF (DataId is not included in CRC calculation)

CRC calculation

5.3.4.1 CRC calculation data

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5.3.4.2 Calculation algorithm

crcDataSize

CRC-8-SAE J1850 for CRC calculation.
Initial value :0xFF
XOR value :0xFF

5.4 CAB-SF 1500-002
5.4.1
Data layout
CRC is the 0th byte in the signal group.

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

5.4.2




5.4.3



5.4.4

Alive counter locates in lowest 4 bits of 1st byte.

Counter
Initialized with 0 for the first CAN frame transmission
Incremented by 1 for every subsequent send request
When the counter reaches the value 15, then it shall restart with 1 for the next sendrequestDanaids
E2E_P01_DATAID_LOW: only the low byte is included, and high byte is never used.
DataID configurable
DataID = 0x0080

CRC calculation

5.4.4.1 CRC calculation data

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5.4.4.2 Calculation algorithm

crcDataSize

CRC-8-SAE J1850 for CRC calculation.
Initial value: 0x00
XOR value: 0x00
E2E Profile 1 uses CRC-8-SAE J1850 but
using different initial and XOR values.

•

6 Power supply instruction
6.1 Aim

Aim is to clarify power status indication.
Aim is to present power consumption under different working conditions including
primary current and temperature.
Aim is to provide power information for CAB power design system.

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6.2 StatusPowerSupplyThe ‘StatusPowerSupply’ signal goal is to protect the CAB sensor from working underunsafe operating areas, aim for CAB power supply setup instruction
LEM recommends power supply range [9V-16V] (9V and 16V included).
[8V-9V] (9V excluded) ripple voltage should be lower than 400mVpp.

CAN Frame Content
7
BYTE0

6

4

Sequence Counter Ip
MSB



5

3

2

StatusPowerSupply
LSB

MSB

1

0

Statusinternal error

Safety Goal
violation

LSB

Power Supply range

1) In above StatusPowerSupply signal illustration, all the setting values for power status are typicalvalues, the actual threshold voltages may deviate from the setting values due to hardware consistency
and mesurement tolerance, with deviation range±0.3V.
Below data is for customer information as long as power status is concerned.
Threshold namePower status bits
Min.(V)Typ. (V)Max. (V)Threshold Low voltage
00->01
7.5
7.8
8.1
Threshold High voltage
00->10
15.9
16.2
16.5
Hysteresis
0100 or1000
0.2
Note:Test condition ,room tempertuare, IP=0A, voltage measurement position CAB supply pin side.
Different application may lead slightly difference with the result.

2) When Power Supply voltage measurement is not available, then ‘StatusPowerSupply’ = “1 1”At sensor start-up, if supply voltage < 7.8 V or > 16.2 V, no CAN frame emission3) The Vbat voltage mentioned above is the real voltage supplied on CAB terminals
Suggestion: if there is a MOSFET or transistor applied before CAB supply voltage, drop voltage should
be considered in design.

Vbat

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6.3 Current consumption

CAB current consumption will be much higher at 8V than nominal 13.5V supply voltage
LEM’s recommendation is to supply CAB with voltage close to nominal voltage for best
reliability over lifetime.
CAB will send the ‘StatusPowerSupply’ flag if it detects to be too close to the minimum
8.0V supply and maximum 16V supply.

6.4 Input peak current
CAB family products are designed based on fluxgate technology, and fluxgate switching
will lead input peak current, frequency is same with fluxgate switching frequency.
 Based on above information, LEM’s recommendation is considering a margin on power
supply.
Waveform to show input peak current _13.5V with IP =1500A, input peak current is 1.49A.


Waveform to show input peak current _9V with IP =1500A, input peak current is 2.83A.

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Waveform to show input peak current _9V with IP =1000A, input peak current is 0.86A.

7 CAN parameter configuration
7.1 Aim
The aim of Customer Access Parameter Configuration is to:express the procedure customer can follow to read or write the parameters in CAB1500
family transducer.
clarify access right on each parameter which is accessible to customer.



7.2 Function requirement
7.2.1

Communication interface
CAN_Interface

Name
Short description

CAB1500 supports communication on CAN interface
It uses the ISO 15765-2:2011 standard for the transport protocol definition.

Description

It uses the ISO 14229-1:2013 standard for the services definition.

Name
Short description

UDS
Parameter read/write action can be realized by UDS
Default UDS RxID: 0x68D (Physical requests from Tester to ECU)

Description

7.2.2

UDS TxID: 0x68E (Physical response from ECU to Tester)
The software supports a set of customer access UDS diagnostic services
specified in UDS Software Specification

Parameter Access Protocol

Name
Short description

Parameter Read protocol.001
Parameter read is realized by UDS ReadDataById service

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Description

See below for the protocol and example

Diagnostic Control
Customer Session(10 63)

Security Access
RequestSeed(27 01) – TransferKey(27 02)

ReadDataByID(22)Parameter Write protocol.001

Name
Short description
Description

Parameter read is realized by UDS WriteDataById service
See below for the protocol and example

Diagnostic Control
Customer Session(10 63)

Security Access
RequestSeed(27 01) – TransferKey(27 02)

WriteDataByID (2E)PowerOff then PowerOn Sample

7.3 UDS SOFTWARE SPECIFICATION
7.3.1

Diagnostic service list

Name
Short description
Description

UDS_Services.001
The software implements a set of services by physical addressing
The table below is the list of the services implemented (see ISO 14229 forfurther details).

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Service

Default session (0x01)

Customer session (0x63)

DiagnosticSessionControl – 0x10xx

SecurityAccess – 0x27-

x

TesterPresent – 0x3Exx

ReadDataByIdentifier – 0x22

x (a)

x

WriteDataByIdentifier – 0x2E-xx: the service is available in the corresponding type of session.
-: the service is not implemented in the corresponding type of session(a) only for non-secured data

All services available in Default session are accessible in customer session,
without Security Access restriction.
Customer session is restricted by the Security Access service, and thus require
the server to be in “unlocked” state before use.
Without any message from the client for 4 seconds the server shall return tothe default session and security access to be locked.

7.3.2

Diagnostic and Communication Management Functional Unit

7.3.2.1 Diagnostic session control

Name
Short description
Description

UDS_DiagSessionCtrl.001
UDS Diagnostic session control service and sub-functions
The service Diagnostic Session Control (0x10) implements the following subfunctions which are open to customer:-

Default session (0x01)
Customer session (0x63)

7.3.2.2 Security Access

Name
Short description

UDS_SecurityAccess.001
UDS Security Access key algorithm
Upon request from the client, the system sends a pseudo-random 32-bit seed
Key computation:

Description

1. Compute CRC16 : Algorithm CRC-16/CCITT-FALSE
2. Compute KeyCRC32
KeyCRC32 = CRC16 + (CRC16 << 16)
3. Compute final 32-bit key
Key = KeyCRC32 ^ 0xC3A55A3C
The server compares the keys and unlocks the protected services if match.

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UDS_SecurityAccessFunctions.001

Name
Short description

UDS Security Access service and sub-functions
The Security Access (0x27) service implements the following sub-functions:- 0x01: requestSeed- 0x02: sendKey
All other sub-functions are not supported

Description

7.3.2.3 ReadDataByld and WriteDataByld

UDS_ReadWriteDataById.002

Name
Short description

UDS ReadWriteDataByIdentifier list of data
The services ReadDataByIdentifier (0x22) and WriteDataByIdentifier (0x2E)
supports the data listed in Table1

Description

Table 1 : Detailed list of RDBID and WDBID

Array
ID

Data name0x0303

Application SW version

2

R

MSB to LSB : MMNN

0x0500

Frame id 1: current

4

R/W

CAN ID format

0x3C2

0x0600

UDS frame id Rx

4R/W

CAN ID format

0x68D

0x0601

UDS frame id Tx

4R/W

CAN ID format

0x68E

0x0700

Frame period 1

2

R/W

Integer : 10, 20, 30, 40, 50,
60, 70, 80, 90, 100. Unit: ms

R/W

Enumeration : 0X10 is125Kbps, 0X11 is 250Kbps,
0X12 is 500Kbps
500kbps0x0800Size(bytes)Sessionavailability

Baudrate

1

Customer(0x63)

Formatting

Default
value
-

10

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7.4 Example
7.4.1

Example Read software version
ServiceID(hex)

DataLength

DataByte (hex)Enter customer session

068D

8

02 10 63 00 00 00 00 00

068E

8

02 50 63 00 00 00 00 00

Security Access:
RequestKey

068D

8

02 27 01 00 00 00 00 00

068E

8

06 67 01 76 12 F3 B1 00

Security Access:
SendKey

068D

8

06 27 02 FE E2 67 7B 00

068E

8

02 67 02 00 00 00 00 00

ReadDataById

068D

8

03 22 03 03 00 00 00 00

068E

8

05 62 03 03 01 0F 00 00

Key computation
Seed :

0x7612F3B1
1. Compute CRC16
Online CRC-8 CRC-16 CRC-32 Calculator (crccalc.com)

 CRC16 = 0x3D47
2. Compute KeyCRC32
KeyCRC32 = CRC16 + (CRC16 << 16);
 KeyCRC32 =0x3D473D47
3. Compute final 32-bit key
Key = KeyCRC32 ^ 0xC3A55A3C
 0xFEE2677B

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7.4.2

Example Change CAN ID

ServiceID(hex)

DataLength

DataByte (hex)Enter customer
session

068D

8

02 10 63 00 00 00 00 00

068E

8

02 50 63 00 00 00 00 00

Security Access:
RequestKey

068D

8

02 27 01 00 00 00 00 00

068E

8

06 67 01 E9 95 7D E4 00

Security Access:
SendKey

068D

8

06 27 02 60 9E F9 07 00

068E

8

02 67 02 00 00 00 00 00

WriteDataByID

068D

8

07 2E 05 00 00 00 00 10

068E

8

03 6E 05 00 00 00 00 00

Power off then power on sample, then CAN frame with new CAN ID (0x10) can be observed.

8 Return Busbar
8.1 Aim

Aim is to present external busbar disturbance with different busbar shapes, this can bereferred during BDU structure design.

8.2 NotesThe busbar dimension for test: 22mm (Width) x4mm (Thickness).
Environment: 25 °C.
Error calculation formula: Error %=(Imeasure- IP)/ IP
Due to the complexity of practical application, the examples cannot cover all the application
conditions

8.3 Busbar shapes recommendation






Brief Summary, more details see corresponding charts by busbar shape.
Recommendation for busbar design:
Straight and S-shaped are recommended busbar design.
L-shaped busbar, recommend for AL, AR, DL direction application but not DR direction
application.
C1 and C2 are not recommended busbar design.

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Busbar -shapes

Shape

Accuracy impact

Straight

Error≤0.5%

a(mm)

S

Error≤0.5% (Busbar set up for C≥46mm, a≥
5mm)

c(mm)

0

a(mm)

C1 shape busbar will impact measurement
accuracy, especially IP current higher than
1000A.
The external busbar is as far as possible, which
can reduce the impact of measurement
accuracy.

b=100mmC1

b=100mm

L

Error≤0.5%
DR direction and meantime a≤10mm &IP >1200A, the error >0.5%.
IP >1400A, the error >1%a(mm)CAB Application Note – ANE230602/Version 0
Page 17

Busbar -shapes

C2 shape busbar will impact measurement
accuracy, especially IP current higher than
1000A.

b=100mm

C2

Shape

Accuracy impact

The external busbar is as far as possible, which
can reduce the impact of measurement
accuracy.
a(mm)

8.3.1

Straight busbar

Because of no external busbar influence, straight busbar can achieve performance which
the error is not worse than the tolerance 0.5%(Refer to PV test report).

8.3.2
8.3.2.1

S shape busbar
S shape Busbar
Notes:
1.
2.

A
8.3.2.2

A direction: the nose of sensor is under the busbar.
D direction: the nose of sensor is upon the busbar.

D

S shape busbar - A

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c=46 a=05
c=66 a=30 0.1%0%c=66 a=25-0.1%

c=66 a=20-0.2%

c=46 a=10
c=51 a=05
c=51 a=10-0.3%

c=66 a=15

c=51 a=15

-0.4%
-0.5%

c=66 a=10

c=56 a=05

c=61 a=25

c=56 a=10

c=61 a=20

c=56 a=15

c=61 a=15
c=61 a=10

8.3.2.3

c=56 a=20
c=61 a=05

400
600
800
1000
1100
1200
1300
1400
1450

S shape busbar - D
c=46 a=05
c=66 a=400.1%
c=46 a=12
c=66 a=30
c=46 a=200%
c=66 a=23
c=66 a=10

-0.1%
-0.2%
-0.3%

c=51 a=05
c=51 a=10-0.4%

c=66 a=05

c=51 a=15-0.5%
c=61 a=35

c=51 a=20

c=61 a=30

c=51 a=25

c=61 a=20
c=61 a=10
c=61 a=05

c=56 a=05

c=56 a=30

c=56 a=10
c=56 a=18

400
600
800
1000
1100
1200
1300
1400

S shape busbar has no impact on measurement accuracy and achieve performance which
the error is not worse than the tolerance 0.5%.

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8.3.3

L shape busbar

Notes:
1.
2.
3.
4.

A direction: the nose of sensor is under the busbar.
D direction: the nose of sensor is upon the busbar.
R direction: the nose of sensor is on the right side.
L direction: the nose of sensor is on the left side.
AL a=25
DR a=30

0%

AL a=30-0.5%

DR a=20

AL a=40-1%-1.5%

DR a=10

AR a=05-2%-2.5%

DR a=05

AR a=10

DL a=40

AR a=20
DL a=30

AR a=30
DL a=25

400
600
800
1000
1100
1200
1300
1400
1450
1500

Application on DR direction and meantime a≤10mm & IP>1200A, the error is worse than
0.5%.

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8.3.4C1 shape busbar

b(mm)

a(mm)

Notes:
1.
2.
3.
4.

A direction: the nose of sensor is under the busbar.
D direction: the nose of sensor is upon the busbar.
R direction: the nose of sensor is on the right side.
L direction: the nose of sensor is on the left side.

8.3.4.1

C1 shape busbar - AR
b=70 a=25
b=70 a=20
b=70 a=15
b=70 a=10
b=70 a=05

b=60 a=25

b=35 a=05
0.5%
-0.5%
-1.5%
-2.5%
-3.5%
-4.5%
-5.5%
-6.5%
-7.5%
-8.5%
-9.5%
-10.5%

400A a=05
400A a=10
1500A1500A
a=20 a=25
400A a=15
0.5%
1500A a=15
400A a=20
1500A a=10
400A a=25-0.5%
1500A a=05
600A a=05

b=35 a=10
b=35 a=15

1450A a=15
1450A a=10
1450A a=05

b=40 a=05

1400A a=25
1400A a=20

b=40 a=10

1400A a=15

b=40 a=25

b=60 a=05
b=50 a=25
b=50 a=20

b=50 a=05
b=50 a=10
b=50 a=15

600A a=15
600A a=20
600A a=25
800A a=05
800A a=10
800A a=15
800A a=20
800A a=25

1400A a=05

1000A a=05

1300A a=25

b=40 a=20

b=60 a=10600A a=10

1400A a=10

b=40 a=15

b=60 a=15

8.3.4.2

1450A a=20

b=35 a=25

b=60 a=20

-1.5%
-2.5%
-3.5%
-4.5%
-5.5%
-6.5%
-7.5%
-8.5%
-9.5%
-10.5%

1450A a=25

b=35 a=20

1000A a=10

1300A a=20

1000A a=15

1300A a=15

1000A a=20

1300A a=10

400A
600A
800A
1000A
1100A
1200A
1300A
1400A
1450A
1500A

b=35

1000A a=25

1300A a=05
1200A a=25
1200A a=20
1200A1200A
a=15 a=10

1200A a=05

1100A a=05
1100A a=10
1100A a=15
1100A1100A
a=25 a=20

b=40
b=50
b=60
b=70

C1 shape busbar - DR
400A a=05
1500A
400A400A
a=10a=15
1500A
a=20a=25
0.5%
1500A a=15
400A a=20-0.5%
1500A a=10
400A a=25-1.5%
1500A a=05
600A a=05
-2.5%
-3.5%
1450A a=25
600A a=10
-4.5%
-5.5%
1450A a=20
600A a=15
-6.5%
-7.5%
600A a=20
1450A a=15
-8.5%
-9.5%
1450A a=10600A a=25-10.5%-11.5%
1450A a=05
800A a=05-12.5%-13.5%-14.5%
1400A a=25
800A a=10-15.5%-16.5%
1400A a=20
800A a=15-17.5%-18.5%
1400A a=15
800A a=20
1400A a=10

800A a=25

1400A a=05

1000A a=05

1300A a=25
1300A a=20

b=70 a=25
b=70 a=20

b=70 a=15

b=70 a=10

b=70 a=05

b=40 a=05
0.5%
-0.5%
-1.5%
-2.5%
-3.5%
-4.5%
-5.5%
-6.5%
-7.5%
-8.5%
-9.5%
-10.5%-11.5%-12.5%-13.5%-14.5%-15.5%-16.5%-17.5%-18.5%

b=40 a=10
b=40 a=15

b=40 a=20

b=40 a=25

b=50 a=05

1000A a=10
1000A a=15

1300A a=15
1000A a=20
1300A a=10
1000A a=25
1300A a=05
1100A a=05
1200A a=25
1100A a=10
1200A a=20
1100A a=15
b=40
1200A
a=15a=10
1100A
1200A
1100A
a=25a=20
b=50
1200A a=05
b=60
b=70

b=60 a=25

b=50 a=10

b=60 a=20

b=50 a=15

b=60 a=15

b=50 a=20
b=60 a=10

b=50 a=25
b=60 a=05

400A
600A
800A
1000A
1100A
1200A
1300A
1400A
1450A
1500A

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8.3.4.3

C1 shape busbar- AL
400A a=25
400A a=30
1500A a=50
400A a=40
1500A a=40 0.1%
400A a=50
1500A a=30
-0.2%
600A a=25
1500A a=25

-0.5%
-0.8%
-1.1%
-1.4%
-1.7%
-2%
-2.3%
-2.6%
-2.9%
-3.2%

1450A a=50
1450A a=40
1450A a=30
1450A a=25
1400A a=50
1400A a=40

b=35 a=25
b=70 a=50 0.1%

600A a=30

b=70 a=30

600A a=40
600A a=50

b=70 a=25

800A a=25
b=60 a=50

800A a=30
800A a=40

1400A a=30

b=60 a=40

800A a=50

1400A a=25

1000A a=25

1300A a=50

b=35 a=30
b=35 a=40
b=35 a=50
b=40 a=25

b=40 a=30

b=40 a=40

b=60 a=30

b=40 a=50

1000A a=30

1300A a=40

400A

1000A a=40

1300A a=30
1300A a=25
1200A a=50
1200A a=40
1200A a=30

8.3.4.4

-0.2%
-0.5%
-0.8%
-1.1%
-1.4%
-1.7%
-2%
-2.3%
-2.6%
-2.9%
-3.2%

b=70 a=40

b=60 a=25

b=45 a=25

1000A a=50b=35

1200A a=25

800A
1000A

b=40
b=45
b=50
b=60
b=70

1100A a=25
1100A a=30
1100A a=40
1100A a=50

600A

b=50 a=50

1100A

b=45 a=30

b=50 a=40

1200A
1300A

b=45 a=40

b=50 a=30

b=50 a=25

1400A

b=45 a=50

1450A
1500A

C1 shape busbar - DL
400A a=25
1500A a=50
400A a=30
0.5%
1500A a=40
400A a=40
1500A a=30
400A a=50-0.5%
1500A a=25
600A a=25-1.5%
1450A a=50
1450A a=40

1450A a=30
1450A a=25
1400A a=50
1400A a=40

-2.5%
-3.5%
-4.5%
-5.5%
-6.5%
-7.5%
-8.5%
-9.5%
-10.5%-11.5%

b=70 a=50

600A a=30
b=70 a=40

600A a=40
600A a=50
800A a=25

b=70 a=30

800A a=30
800A a=40

1400A a=30

800A a=50 b=70 a=25

1400A a=25

1000A a=25

1300A a=50

b=45 a=25
0.5%
-0.5%
-1.5%
-2.5%
-3.5%
-4.5%
-5.5%
-6.5%
-7.5%
-8.5%
-9.5%
-10.5%-11.5%

b=45 a=30

b=45 a=40

b=45 a=50

b=50 a=25

400A

1000A a=30

1300A a=40

1000A a=40

1300A a=30
1300A a=25
1200A a=50
1200A a=40
1200A a=30

1000A a=50

1200A a=25

1100A a=25
1100A a=30
1100A a=40
1100A a=50

600A
b=50 a=30
800A

b=60 a=50

1000A

b=45
b=50
b=60
b=70

1100A
b=60 a=40

b=50 a=40

1200A
1300A
1400A

b=60 a=30

b=50 a=50
b=60 a=25

1450A
1500A

CAB Application Note – ANE230602/Version 0
Page 22

8.3.4.5

Summary

Matrix of various directions, distances, IP current values

C1 shape busbar will impact measurement accuracy, especially IP current higher than
1000A.
The external busbar is as far as possible, which can reduce the impact of measurement
accuracy.
If the other factors are same, R direction is a little better than L direction.
If the other factors are same, A direction is much better than D direction.
8.3.5

C2 shape busbar

b(mm)

a(mm)
1.
2.
3.
4.

Notes:A direction: the nose of sensor is upon the busbar.
D direction: the nose of sensor is under the busbar.
R direction: the nose of sensor is on the right side.
L direction: the nose of sensor is on the left side.

CAB Application Note – ANE230602/Version 0
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8.3.5.1

C2 shape busbar - DR

b=60 a=25

400A a=05
400A a=10
1500A1500A
a=20 a=25
400A a=15
0.5%
1500A a=15
400A a=20
1500A a=10
400A a=25-0.5%
1500A a=05
600A a=05
1450A a=25

-1.5%

-4%

1400A a=25

-6.5%

800A a=10-7%b=60 a=05

800A a=20

1400A a=10

800A a=25

1400A a=05

1000A a=05

1300A a=25

b=35 a=25-6%800A a=15

-8.5%

-5%

b=60 a=10

800A a=05-7.5%

b=35 a=20-3%600A a=25-5.5%

1400A a=15-2%

b=60 a=15

1450A a=05

1400A a=20

b=35 a=15-1%600A a=20-4.5%

1450A a=10

b=60 a=20

600A a=15-3.5%

b=35 a=100%600A a=10-2.5%

1450A a=20
1450A a=15

b=35 a=05
1%

b=40 a=05-8%

b=50 a=25

b=40 a=10

1000A a=10

1300A a=20
1300A a=15

1000A a=20

1300A a=10
1300A a=05
1200A a=25
1200A a=20
1200A1200A
a=15 a=10

1200A a=05

b=50 a=20

b=40

1000A a=25
1100A a=05
1100A a=10
1100A a=15
1100A1100A
a=25 a=20

b=40 a=15

800A
1000A
1100A

b=50

b=50 a=15

b=60

b=40 a=20
b=50 a=10

1200A
1300A
1400A

b=40 a=25

1450A

b=50 a=05

8.3.5.2

400A
600A

b=35

1000A a=15

1500A

C2 shape busbar - DR
b=35 a=05

400A a=05
1500A
400A400A
a=10 a=15
1500A
a=20 a=25
0.5%
1500A a=15
400A a=20
400A a=25
1500A a=10
-0.5%600A a=05
1500A a=05

1450A a=25
1450A a=20
1450A a=15
1450A a=10
1450A a=05
1400A a=25
1400A a=20
1400A a=15

-1.5%
-2.5%
-3.5%
-4.5%
-5.5%
-6.5%

b=60 a=25

600A a=20

800A a=20

1400A a=10

800A a=25

1400A a=05

1000A a=05

1300A a=25
1300A a=20

b=60 a=15

b=35 a=20

-2.5%
-3.5%

b=60 a=10

b=35 a=25-4.5%

800A a=10
800A a=15

b=35 a=15-1.5%600A a=25
800A a=05

b=35 a=10-0.5%

b=60 a=20

600A a=10600A a=15

0.5%

-5.5%
-6.5%

b=60 a=05

b=40 a=05

b=50 a=25

b=40 a=10

1000A a=10
1000A a=15

1300A a=15
1000A a=20
1300A a=10
1000A a=25 b=35
1300A a=05
1100A a=05
b=40
1200A a=25
1100A a=10
1200A a=20
1100A a=15
b=50
1200A
a=15 a=10
1100A
1200A
1100A
a=25 a=20
b=60
1200A a=05

b=50 a=20

b=40 a=15

b=50 a=15

b=40 a=20
b=50 a=10

b=40 a=25
b=50 a=05

400A
600A
800A
1000A
1100A
1200A
1300A
1400A
1450A
1500A

CAB Application Note – ANE230602/Version 0
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8.3.5.3

C2 shape busbar - AL
b=40 a=25

400A a=25
1500A a=50
400A a=30
1500A a=40
400A a=40
0%
1500A a=30
400A a=50-0.5%
1500A a=25
600A a=25-1%

1450A a=50
1450A a=40
1450A a=30
1450A a=25
1400A a=50
1400A a=40

-1.5%
-2%
-2.5%
-3%
-3.5%
-4%
-4.5%
-5%
-5.5%
-6%

b=70 a=50
b=70 a=40

600A a=30

b=70 a=30

600A a=40
600A a=50

800A a=30
b=60 a=50

800A a=40

1400A a=30

b=40 a=30
b=40 a=40
b=40 a=50

b=45 a=25

b=45 a=30

800A a=50

1400A a=25

b=45 a=40

b=60 a=40

1000A a=25

1300A a=50

1000A a=30

1300A a=40

1000A a=40

1300A a=30

b=60 a=30

b=35
b=40
b=45
b=50
b=60

1000A a=50

1300A a=25
1100A a=25
1200A a=50
1100A a=30
1200A a=40
1100A a=40
1200A a=30
1100A a=50
1200A a=25

8.3.5.4

b=70 a=25

800A a=25

0%
-0.2%
-0.4%
-0.6%
-0.8%
-1%
-1.2%
-1.4%
-1.6%
-1.8%
-2%

b=45 a=50

b=60 a=25

b=50 a=25
b=50 a=50

b=50 a=30
b=50 a=40

400A
600A
800A
1000A
1100A
1200A
1300A
1400A
1450A
1500A

C2 shape busbar - DL
400A a=25
400A a=30
1500A a=50
400A a=40
1500A a=40
0%400A a=50
1500A a=30
-1%600A a=25
1500A a=25
1450A a=50
1450A a=40
1450A a=30
1450A a=25

1400A a=50
1400A a=40

-2%
-3%
-4%
-5%
-6%
-7%
-8%
-9%
-10%
-11%

b=35 a=50
b=35 a=40-1%-2%

b=35 a=30

600A a=30-3%

b=40 a=30
b=40 a=40
b=40 a=50-4%600A a=40
600A a=50
800A a=25-5%b=35 a=25-6%

b=45 a=25-7%b=70 a=50-8%

b=45 a=30-9%800A a=30-10%800A a=40 b=70 a=40

1400A a=30

b=40 a=250%-11%

b=45 a=40

800A a=50

1400A a=25

1000A a=25

1300A a=50

b=70 a=30

1000A a=30

1300A a=40

1000A a=40
b=35

1300A a=30
1300A a=25
1200A a=50
1200A a=40
1200A a=30

1000A a=50

1200A a=25

1100A a=25
1100A a=30
1100A a=40
1100A a=50

b=40
b=45
b=50
b=60
b=70

b=70 a=25
b=60 a=50
b=60 a=40
b=60 a=30

b=60 a=25

b=45 a=50
400A
600A
800A
b=50 a=25
1000A
1100A
b=50 a=30
1200A
1300A
b=50 a=40
1400A
1450A
b=50 a=50
1500A

CAB Application Note – ANE230602/Version 0
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8.3.5.5

C2 shape summary

Matrix of various directions, distances, IP current values

C2 shape busbar will impact measurement accuracy, especially IP current higher than
1000A.
The external busbar is as far as possible, which can reduce the impact of measurement
accuracy.
If the other factors are same, R direction is a little better than L direction.
If the other factors are same, AL is better than DL, DR is better than AR.

9 Current ripple
9.1 Aim

Aim is to illustrate AC current ripple’s impact on CAB 1500 series products.
CAB 1500 series products are designed for BMS application which is capable tomeasurement DC current only.
LEM recommends avoiding the applications at below AC current ripple cases.

CAB Application Note – ANE230602/Version 0
Page 26

9.2 CAB 1500 current sensor on-power•

CAB1500 will report ‘Internal Error’ at specific current ripple frequency.

•

Preliminary test is recommended to confirm if current ripple on application may impact the
behaviour of CAB. *1*1 Please contact LEM technical support team for current ripple references.

9.3 CAB 1500 current sensor off-power•

By theoretically, Current ripple ratio (components of off-power CAB1500 current sensor.

•

Prohibition of flowing current in power off state.

) over 60% may apply stress on key

10 Internal error information•

Aim to present ‘Internal Error’ potential causes and behaviors.

CAB 1500-00X
Internal Error

Current Analog
measurement

Potential Cause & comment

1

0xFFFFFF- Hardware malfunction- Current ripple. Error stay for limited period of time.
Automatically recover if ripple disappear- | IP | > | ÎP max |*2

1

1550000mA

Overcurrent detection. | IP | is over 1550A (less than | ÎP max |)CAB-SF 1500-00X
Internal Error

Current Analog
measurement

Potential Cause & comment- Hardware malfunction- Current ripple. Error stay for limited period of time.
Automatically recover if ripple disappear- | IP | > | ÎP max |*2

1

0xFFFFFF

1

IP

Malfunction on redundant hardware for functional safety,
Current measurement accuracy is not guaranteed

11550000mA

Overcurrent detection. |IP| is over 1550A (less than |ÎP max|)*2 |ÎP max| ≈ 1700 A

CAB Application Note – ANE230602/Version 0
Page 27

11 Accuracy with 1 and 10 CAN Frames average
11.1 Aim

Aim is to present CAB 1500 accuracy performance with 10 CAN frames average and 1
CAN frame average, datasheet suggest 20 CAN frames average to achieve more stableaccuracy.

11.2 10 CAN Frames average accuracy
11.2.125degC performance

CAB Application Note – ANE230602/Version 0
Page 28

11.2.2-40degC performance

CAB Application Note – ANE230602/Version 0
Page 29

11.2.1 85degC performance

CAB Application Note – ANE230602/Version 0
Page 30

11.3 1 CAN Frame average accuracy
11.3.1 25degC performance

CAB Application Note – ANE230602/Version 0
Page 31

11.3.2 -40degC performance

CAB Application Note – ANE230602/Version 0
Page 32

11.3.3 85degC performance

CAB Application Note – ANE230602/Version 0
Page 33