CAN Repeater CRep S8/FD

increased immunity to common-mode interference for Classic CAN and CAN FD

Special Features

CAN Repeater CRep S8/FD

Protocol transparent CAN repeater for CAN FD and CC
8 CAN channels
Low propagation delay
ISO 11898-2:2016 and CiA 601-4 (SIC) compatible bus interface (TI TCAN1462)
Detach of dominant locked bus segments
Signal conditioning over long distances

Description

The DIN rail-mountable CAN repeater CRep S8/FD was developed with signal quality in mind. The use of a Signal Improvement Capability Transceiver (SIC) for the physical CAN interface and split termination enables stable signal transmission and increased immunity to common-mode interference for Classic CAN and CAN FD.

Each of the eight CAN channels physically behaves like a single bus node. CRep S8/FD enables the implementation of star network structures. This opens up the possibility to select a network topology, that can help to reduce installation costs.

The ability to isolate permanent dominant segments from the rest of the CAN system after an error time reduces the impact of the most frequently occurring errors on intact bus segments. CRep S8/FD features split termination with 2 x 60 ohms. If termination isn't required, the device is offered with high-ohm resistors to ensure that a channel without a connected and terminated cable cannot interfere with the rest of the network.

The operating voltage is indicated by an LED. Each channel is also assigned an LED to indicate which segment has generated a CAN message.

Technical Data

Layout and Connection

CRep S8/FD includes eight CAN segments, wired by terminal blocks with 3 clamps. The
power supply of CRep S8/FD is separately wired by a terminal block with 2 clamps.

The following table shows the terminal assignment of the power supply:

Pin	Name	Function
1	Power +	Supply voltage +24 V
2	Power –	Ground

The following table shows the pin assignment of the CAN terminal block:

Pin	Name	Function
1	CAN_H	CAN data line (dominant high)
2	CAN_L	CAN data line (dominant low)
3	CAN_GND	CAN ground

Limiting Values

Parameter	Minimum	Maximum	Unit
Storage temperature	-40	+85	°C
Operating temperature	-20	+70	°C
Power supply voltage	-100	+35	V

Any (also temporary) stress in excess of the limiting values may cause permanent damage on CRep S8/FD and other connected devices. Exposure to limiting conditions for extended periods may affect the reliability and shorten the life cycle of the device.

Nominal Values

Parameter	Minimal	Typical	Maximal	Unit
Current consumption (running idle)	n.s.	30	n.s.	mA
Current consumption (250 kBits/s, 100 % busload)	n.s.	80	n.s.	mA
Supply voltage	19	24	30	V
Propagation delay between two arbitrary channels	n.s.	130	200	n.s.