Peak PCAN-Optoadapter Manuale utente

Plug-on Adapter for Decoupling CAN

Networks

User Manual

PCAN-Optoadapter

2.0.0

PCAN-Optoadapter – User Manual

Products taken into account

Product Name Model Part number

PCAN-Optoadapter IPEH-002038

CANopen® and CiA® are registered community trade marks of CAN in Automation

e.V.

All other product names mentioned in this document may be the trademarks or

registered trademarks of their respective companies. They are not explicitly marked

by “™” or “®”.

PEAK-System Technik GmbH

Otto-Roehm-Strasse 69

64293 Darmstadt

Germany

Phone: +49 (0)6151 8173-20

Fax: +49 (0)6151 8173-29

www.peak-system.com

info@peak-system.com

Document version 2.0.0 (2011-10-05)

PCAN-Optoadapter – User Manual

Contents

1Introduction 4

1.1 Properties at a Glance 4

1.2 System Requirements 4

1.3 Scope of Supply 5

2Connectors 6

2.1 Connection Primary Side 6

2.2 Connection Secondary Side 7

3Operation 8

3.1 Signal Delay 8

4Technical Specification PCAN-Optoadapter 9

Appendix A CE-Certificate 10

Appendix B Dimension Drawing 11

PCAN-Optoadapter – User Manual

1Introduction

The PCAN-Optoadapter is a universal plug-on adapter to allow

galvanic isolation of High-speed CAN bus systems.

Its integrated logic means that decoupling can be installed at any

point in the CAN network.

1.1 Properties at a Glance

Plug-on adapter for decoupling the CAN bus for all PEAK CAN

interfaces

Optical decoupling and electrical isolation by DC/DC converters

up to 500 V

Bit rates up to 1 Mbit/s

High-speed CAN transceiver NXP TJA1050

CAN bus connection via D-Sub, 9-pin

(in accordance with CiA® 102)

Extended operating temperature range from -40 to 85 °C

(-40 to 185 °F)

All PEAK CAN interfaces can be set to the supply voltage

required

1.2 System Requirements

The power supply is done via pin 1 of the 9-pin female D-Sub

connector (primary side). Therefore the attached CAN interface

must provide 5 Volts.

PCAN-Optoadapter – User Manual

Since the PCAN-Optoadapter already contains a CAN bus

termination on the primary side, the connected CAN adapter

doesn’t need to be terminated separately.

1.3 Scope of Supply

Adapter in plastic casing

Manual in PDF format

PCAN-Optoadapter – User Manual

2Connectors

2.1 Connection Primary Side

The PCAN-Optoadapter is directly connected to a CAN interface

with its so called primary side (D-Sub (f)).

Figure 1: Pin assignment at the primary side

Attention! Risk of short circuit! When you connect the PCAN-

Optoadapter to or remove it from a CAN interface, latter must

be turned off (without power supply). Otherwise the PCAN-

Optoadapter or other electronic components may be damaged.

The lines for the differential CAN signal CAN_H and CAN_L are

terminated on the adapter with a 60-Ωresistor (fixed). An additional

termination at the CAN interface is not needed.

For general supply the adapter uses a direct voltage of +5 V. This

must be applied to pin 1 of the CAN connector. The CAN interfaces

of the PCAN series are able to provide 5 Volts on Pin 1.

PCAN-Optoadapter – User Manual

2.2 Connection Secondary Side

A High-speed CAN bus (ISO 11898-2) is connected to the 9-pin D-

Sub connector. The pin assignment for CAN corresponds to the

specification CiA® 102.

Figure 2: Pin assignment at the secondary side

PCAN-Optoadapter – User Manual

3Operation

Note: A configuration of the PCAN-Optoadapter is not needed.

You can use it instantly.

3.1 Signal Delay

The PCAN-Optoadapter has a transit time delay of 145 ns. This

corresponds to a cable length of 29 m. Therefore, you should

consider the dependence of the maximum length of a CAN bus on

the bit rate at the installation of the PCAN-Optoadapter. The

following table shows the maximum possible CAN bus length at

different bit rates:

Bit rate Bus length Bus length with

PCAN-Optoadapter

1 Mbit/s 40 m 11 m

500 kbit/s 110 m 81 m

250 kbit/s 240 m 211 m

125 kbit/s 500 m 471 m

50 kbit/s 1,3 km

20 kbit/s 3,3 km

10 kbit/s 6,6 km

5 kbit/s 13,0 km

For small bit rates,

the delay of the

adapter can be

neglected

The listed values have been calculated on the basis of an idealized

system and can differ from reality.

PCAN-Optoadapter – User Manual

4Technical Specification

PCAN-Optoadapter

Connectors

CAN D-Sub (m), 9 pins

Pin assignment according to specification

CiA® 102

CAN

Specification ISO 11898-2

High-speed CAN (up to 1 Mbit/s)

2.0A (standard format) and 2.0B (extended format)

Transceiver NXP TJA1050

Galvanic isolation Up to 500 V

Termination 62 Ωon the primary side

none on the secondary side

Signal delay ca. 145 ns

Power supply

Supply voltage +5 V = via pin 1 of D-Sub (f)

Power consumption max. 120 mA

Measures

Size 63 x 34 x 17 mm

Weight 25 g

Environment

Operating temperature -40 - +85 °C (-40 to 185 °F)

Temperature for storage and

transport

-40 - +100 °C (-40 to 212 °F)

Relative humidity 15 - 90 %, not condensing

EMC EN 55024: 2003-10

EN 55022: 2008-05

EC directive 2004/108/EG

PCAN-Optoadapter – User Manual

Appendix A CE-Certificate

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