Description

This device provides a repeater function between three CAN-bus segments. The first one connects via a DIN-rail mounted T-bus or via an ordinary 5-way terminal block and provides power for the logic core and the second segment. The optional second segment connects via fibre-optical cable with ST connections. The third segment is a normal 'copper' CAN-bus with ATEX intrinsic safe isolation and safety parameters. This allows for installing interfaces and sensors inside 'Zone 2 or zone 22' potentially explosive environments.

Functionality

• Two- or three-way CAN-bus repeater
• Bus connection for main power + CAN-bus up to 1Mbps
• Intrinsic safe CAN-bus connection (needs power from the hazardous side)
• Optional fibre-optic CAN-bus link

Specifications

• Voltage range 12-36VDC
• Instrinsic safety isolation ≥ 0.5mm
• Allowed isolation voltage up to 1kVrms/1414Vpeak (non-ATEX)
• Bus powered U_m 6-36V_DC, power <100mW
• 5-Way 3.5mm pluggable screw terminal connections for safe side
• Optional 820nm 'ST' fibre-optic multimode coupling to other repeater device
• Propagation delay 100ns, equivalent to ~20m of cable length
• DIN-rail enclosure 101x80, width 17.5mm
• CAN-bus connection via DIN-rail mounted T-Bus connector or via 5-way 3.81mm terminal block
• Mating terminal blocks included, including the T-Bus contact block
• ATEX intrinsic safety 'ic' (IEC 60079-11) and increased safety 'nA' (IEC 60079-15)

IEC 60079-11 and 60079-25 compatibility

Note that the intrinsic safe circuits require a separation of ≥ 50mm from 'normal' circuits. Separation to other IS circuits only requires 6mm. So multiple devices can be installed next to each other, but when installed next to other devices, a suitably solid isolation plate or earthed metal plate must be installed between the connection areas. For more details, contact us or refer to IEC 60079-11.