FOR ELECTRICAL ISOLATION OF 2 BUS SEGMENTS
CAN-Bridge_V1.1.1_PI_2019-04_EN 1
Subject to technical changes
CAN bridge
1 CAN bridge
For electrical isolation of 2 bus segments
1.1 Front view
Fig. 1: CAN bridge front view
1.2 Features
• Integrated 230V power supply
• Electrical isolation of two CAN bus segments
• Active suppression of incomplete packets
• Extends the number of possible CAN bus topologies
• Extends the total maximum possible CAN bus length
• Integrated, switchable CAN bus terminating resistors
• Smart data filter
• Semi-automatic baud rate adjustment over the gateway
• Different baud rates possible on both CAN bus segments
• Physical CAN bus measurement to detect level errors and wiring errors
• Diagnostics mode for plug-in ready refrigeration units
• Simple handling
• Connection to the Wurm system by communication bus (CAN bus) and FRIGODATA XP
1.3 Scope of supply
• 1 x product information
• 3 x screw terminal sockets
• 1 x terminal strip with end cover plate
• 2 x short PE connection leads
• 1 x adapter ZCB-ADP/CB-PI
• 1 x RJ45 patch cable
FOR ELECTRICAL ISOLATION OF 2 BUS SEGMENTS
2 CAN-Bridge_V1.1.1_PI_2019-04_EN
Subject to technical changes
CAN bridge
1.4 Safety instructions
Writing conventions
WARNING
• Avoid the described hazard: otherwise there is danger from electric voltage that can lead to
death or serious bodily injury.
CAUTION
• Avoid the described hazard: otherwise minor or medium bodily injury or property damage will
result.
For your safety
For safe operation and to avoid personal injury and equipment damage through operator error, always
read these instructions, become familiar with the device, and follow all safety instructions on the
product and in this document, as well as the safety guidelines of Wurm GmbH & Co. KG Elektronische
Systeme. Keep these instructions ready to hand for quick reference and pass them on with the device
if the product is sold. Wurm GmbH & Co. KG Elektronische Systeme accepts no liability in case of
improper use or use for other than the intended purpose.
WARNING
DANGER TO LIFE FROM ELECTRIC SHOCK AND/OR FIRE!
• Switch off the power to the entire plant when installing, wiring or removing! Otherwise a mains
voltage and/or external voltage may still be present even if the control voltage is switched off!
• The wiring of the device should be carried out only by a qualified electrician!
• Use only the correct tools for all work!
• Check all wiring after connection!
• Take note of the maximum loads on all connections!
• Never expose the device to moisture, for example due to condensation or cleaning agents!
• Take the device out of operation if it is faulty or damaged and is therefore compromising safe
operation!
• Do not open the device!
• Do not repair the device yourself! If required, send it in for repair with an exact description of the
fault!
CAUTION
FAULTS CAN OCCUR IF THERE IS ELECTROMAGNETIC INTERFERENCE!
• Use only shielded data lines and place them far away from power lines!
Target group This manual is intended for "service technician" personnel.
Intended use The CAN bridge is used for the electrical isolation of two bus segments.
FOR ELECTRICAL ISOLATION OF 2 BUS SEGMENTS
CAN-Bridge_V1.1.1_PI_2019-04_EN 3
Subject to technical changes
CAN bridge
Software revision and validity of documentation
Any software versions not listed are special solutions for individual projects and are not described in detail in this
document. This document automatically ceases to be valid if a new technical description is issued.
Manufacturer: Wurm GmbH & Co. KG Elektronische Systeme, Morsbachtalstraße 30, D-42857 Remscheid
For further information, see our website at www.wurm.de
1.5 Installing the device
The device is intended for top-hat rail mounting and is suitable for operation in fuse boxes and distri-
bution cabinets. The devices can be positioned immediately adjacent to one another without gaps.
WARNING
DANGER TO LIFE FROM ELECTRIC SHOCK AND/OR FIRE!
• Switch off the power to the entire plant before installing! Otherwise a mains voltage and/or
external voltage may still be present even if the control voltage is switched off!
• Take note of the maximum loads on all connections!
The entire system must be free of voltage.
1. (A) Place the device with the leading edge at an acute angle to the top-hat rail.
2. (B) Push the device downwards onto the top-hat rail.
The device snaps into the top-hat rail with mounting catch (a).
You can now connect the device.
Fig. 2: Top-hat rail installation
Software version
V1.1.1 - 2019-04 Documentation status
A
B
FOR ELECTRICAL ISOLATION OF 2 BUS SEGMENTS
4 CAN-Bridge_V1.1.1_PI_2019-04_EN
Subject to technical changes
CAN bridge
1.6 Connection diagram
Fig. 3: Connection diagram
NOTICE
• The assignment of the Wurm CAN bus is different from the CAN bus assignment for plug-in
refrigeration units. Adapter ZCB-ADP/CB-PI is available for connecting plug-in refrigeration units.
More details of the adapter can be found in the related product information.
1.7 Technical data
15 16 17 18 28 29
38 37 36
39
21 22 23 24 98 99
321
4
0000
00
H
L
0V
S
0V
S
H
L
6
22
L
23
S
24
H
7
S2
TR1
TR2
21
0V
Off
On
Off
On
S
L
0V
1
2
3
99
Baud
Rx
Tx
Baud
CAN bus 1
Rx
Tx
Check
baud
98
N
CAN bus 1 230V~CAN bus 2
H
4
L
CAN-Bridge
Analyze
Status
Info 2
Status
Info 1
Auto
Collision
CAN bus 2
CAN bus 1
50
kBd
125
kBd
250
kBd
20
Module no.
kBd
!
S1
CAN Bus
terminating
resistor
integrated
On
Off CAN bus 1
CAN bus 2
CAN Bus
terminating
resistor
integrated
On
Off
/
Power supply 230V~, +10% / -15%, 50/60Hz, 4.5VA
Communication CAN bus 1 3-wire CAN bus interface, electrically isolated, screw terminals
2.5mm² / 2 x RJ45 sockets and switchable terminating resistor
Communication CAN bus 2 3-wire CAN bus interface, screw terminals 2.5mm² / RJ45
socket and switchable terminating resistor
Housing Plastic
Dimensions (WxHxD) 106 x 89 x 56mm (DIN 43880)
Fastening Top-hat rail TH 35-15 or TH 35-7.5 (DIN EN 60715)
Ambient temperature Operation: -20...+55°C, storage: -25...+70°C
Degree of protection IP20
Weight About 364g
CE conformity EU conformity as defined in
- 2014/30/EU (EMC Directive)
- 2014/35/EU (Low Voltage Directive)
RoHS II
Valid from Version 1.1.1
-
1
-
2
-
3
-
4
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