ESD C.2041.04 Скачать руководство пользователя страница 20

Correctly Wiring Electrically Isolated CAN Networks

6.2 Heavy Industrial Environment (

Double

 Twisted Pair Cable)

6.2.1 General Rules

The following 

general rules

 for the CAN wiring with single shielded 

double

 twisted pair cable must

be followed:

1

A  cable   type   with   a   wave   impedance   of   about   120  Ω  ±10%   with   an   adequate   wire   cross-section
(0.22 mm²) has to be used. The voltage drop over the wire has to be considered!

2

For heavy industrial environment use a four-wire CAN cable. Connect  



 two twisted wires to the data signals (CAN_H, CAN_L) and 

the other two twisted wires to the reference potential (CAN_GND) and

the cable shield to functional earth (FE) at least at one point!  

3

The reference potential CAN_GND has to be connected to the functional earth (FE) at exactly  

one

point. 

4

A CAN bus line must not branch (exception: short cable stubs) and has to be terminated with the
characteristic impedance of the line (generally 120 Ω ±10%) at both ends (between the signals CAN_L
and CAN_H and 

not

 at GND)!

5

Keep cable stubs as short as possible (l < 0.3 m)!

6

Select a working combination of bit rate and cable length.

7

Keep away CAN cables from disturbing sources. If this can not be avoided, double shielded cables are
recommended.  

Figure 7:

 CAN wiring for heavy industrial environment

Page 20 of 29

Hardware Manual • Doc. No.: C.2041.21 / Rev. 1.2

CAN-PCI/405-B4

CAN  GND

CAN_L

CAN_H

CAN_GND

n.c.

n.c.

n.c.

n.c.
n.c.

n.c.

n.c.

n.c.

n.c.
n.c.

CAN_L

CAN_H

CAN_GND

Shield

CAN_GND

twisted

twisted

5
6

7

9

8

1

4

3

2

9

1

4

5
6

7

3

8

2

Single shielded 

double twisted pair cable

(four-wire cable,

2x 2x 0.22mm²)

wire shield

earth (FE)

Wire Layout

(Example)

Signal assignment of single shielded double twisted pair cable

 with earth and termination

n.c. = not connected

DSUB9 connector

(female or male)

pin designation

connector case

DSUB9 connector

(female or male)

pin designation

CAN cable with connectors

connector case

Содержание C.2041.04

Страница 1: ...Manual to Product C 2041 04 CAN PCI 405 B4 Hardware Manual Doc No C 2041 21 Rev 1 2 Page 1 of 29 esd electronic system design gmbh Vahrenwalder Str 207 30165 Hannover Germany http www esd eu Phone 49...

Страница 2: ...documentation are reserved by esd Distribution to third parties and reproduction of this document in any form whole or in part are subject to esd s written approval 2014 esd electronic system design g...

Страница 3: ...y Revision Chapter Changes versus previous version Date 1 1 First released version 2008 10 27 1 2 Safety Instructions inserted 2014 06 25 2 1 Safety informations inserted 4 4 Electrical Isolation entr...

Страница 4: ...ttention Electrostatic discharges may cause damage to electronic components To avoid this please perform the steps described on page 7 before you touch the CAN PCI 405 B4 in order to discharge the sta...

Страница 5: ...Single Twisted Pair Cable 18 6 1 1 General Rules 18 6 1 2 Cabling 19 6 1 3 Termination 19 6 2 Heavy Industrial Environment Double Twisted Pair Cable 20 6 2 1 General Rules 20 6 2 2 Device Cabling 21...

Страница 6: ...baud rate can be set by per software The interfaces are electrically isolated from the other potentials The CAN PCI 405 B4 produces hardware generated timestamps with a resolution of 1 s for all CAN...

Страница 7: ...Discharge your body as described above 3 Disconnect the power supply of the PC from the mains If the computer does not have a flexible mains cable but is directly connected to mains disconnect the po...

Страница 8: ...ed with an earth connector 4 8 mm fast on male A CAN participant without an electrically isolated interface acts as an earth connection The CAN PCI 405 B4 is equipped with a 37 pole DSUB panel connect...

Страница 9: ...ription 3 PCB View and LED Description 3 1 PCB View Figure 2 PCB top view of CAN PCI 405 B4 See also page 14 for signal assignment of the CAN connector CAN PCI 405 B4 Hardware Manual Doc No C 2041 21...

Страница 10: ...received or transmitted on CAN1 and or CAN3 B CAN0 CAN2 traffic CAN frames are being received or transmitted on CAN0 and or CAN2 C Driver status PCI traffic LED off LED on LED flickering No driver lo...

Страница 11: ...B9 panel connector male X1000 Temperature range 0 50 C ambient temperature Humidity max 90 non condensing Dimensions 164 64 mm x 106 68 mm without slot cover panel and CAN connector Weight approx 130...

Страница 12: ...ector CAN controller SJA1000 acc to ISO 11898 1 CAN 2 0 A B Physical Layer Physical layer according to ISO 11898 2 transmission rate is programmable from 10 Kbit s to 1 Mbit s Bus termination terminat...

Страница 13: ...r detailed information about the driver availability for your special operating system please contact our sales team sales esd eu Additional free of charge esd CAN tools for Windows offer efficient se...

Страница 14: ...8 n c CAN_GND2 27 9 CAN_GND2 CAN2_H 28 10 CAN2_H CAN2 CAN2_L 29 11 CAN2_L n c 30 12 n c CAN_GND1 31 13 CAN_GND1 CAN1_H 32 14 CAN1_H CAN1 CAN1_L 33 15 CAN1_L n c 34 16 n c CAN_GND0 35 17 CAN_GND0 CAN0_...

Страница 15: ...interfaces are conducted to four DSUB9 plugs male Figure 4 Adapter cable CAN PCI 405 B4 1C4 CAN PCI 405 B4 Hardware Manual Doc No C 2041 21 Rev 1 2 Page 15 of 29 30 mm CAN 1 CAN 0 Label Label Label L...

Страница 16: ...the adapter cable Table 6 Assignments of the cable connectors of CAN PCI 405 B4 1C4 Note The CAN GND signals of the cables of the 4 channel cable adapter CAN PCI 405 B4 1C4 are connected via the wire...

Страница 17: ...male Pin Position Pin Assignment Signal Pin Signal 1 reserved reserved 6 2 CAN_L CAN_H 7 3 CAN_GND reserved 8 4 reserved reserved 9 5 reserved Signal Description CAN_L CAN_H CAN signal lines CAN_GND...

Страница 18: ...gnals CAN_H CAN_L and the cable shield to the reference potential CAN_GND 3 The reference potential CAN_GND has to be connected to the functional earth FE at exactly one point 4 A CAN net must not bra...

Страница 19: ...for proper wiring with single shielded single twisted pair wires 6 1 3 Termination If the used CAN interface is not equipped with an integrated CAN termination and it is at an end of the bus use exter...

Страница 20: ...and has to be terminated with the characteristic impedance of the line generally 120 10 at both ends between the signals CAN_L and CAN_H and not at GND 5 Keep cable stubs as short as possible l 0 3 m...

Страница 21: ...oper wiring with single shielded double twisted pair cables 6 2 3 Termination If the used CAN interface is not equipped with an integrated CAN termination and it is at an end of the bus use external t...

Страница 22: ...CAN signals esd modules typically reach a wire length of 37 m at 1 Mbit s within a closed net without impedance disturbances like e g cable stubs 0 3 m Bit rate Kbits s Typical values of reachable wir...

Страница 23: ...22 016 UL appr BUS Schleppflex PUR C 1x 2x 0 25 mm Order No 94 025 016 UL appr 6 5 2 Cable for Heavy Industrial Environment Applications Four Wire Manufacturer Cable Type U I LAPP GmbH Schulze Delitzs...

Страница 24: ...s To test it please 1 Turn off all power supplies of the attached CAN nodes 2 Measure the DC resistance between CAN_H and CAN_L at the ends of the network see figure above and at the centre of the net...

Страница 25: ...CAN bus might possibly still be able to transmit data if there is a short circuit between CAN_GND and CAN_L but the error rate will increase strongly Make sure that there is no short circuit between C...

Страница 26: ...cuits may increase the leakage current in these circuits To measure the current leakage through the CAN circuits please use an resistance measuring device and 1 Switch off the node and disconnect it f...

Страница 27: ...Declaration of Conformity 8 Declaration of Conformity CAN PCI 405 B4 Hardware Manual Doc No C 2041 21 Rev 1 2 Page 27 of 29...

Страница 28: ...01 17 CANopen LCD RTX CANopen license for RTX incl CD ROM C 1101 16 J1939 Stack for Windows J1939 Stack for esd CAN Hardware includes Windows XP object code J1939 Simulation Tool esd CAN Windows drive...

Страница 29: ...1 21 CANopen ME CANopen Manager Slave Manual C 2002 21 J1939 Software Manual J1989 Software Manual in English C 1130 21 Table 9 Available manuals Printed Manuals If you need a printout of the manual a...

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