CAN Repeater CRep Opto

$220.00$253.00

2-channel CAN Bus repeater. Isolated. Transmits and amplifies CAN signals transparent to CAN protocol, with low propagation delay, and shutdown of erroneous bus segments. Allows the design of flexible wiring topologies. Rail-mountable.

SKU: WU-12-02-xxx-20 Categories: ,

The CRep Opto two-channel Isolated CAN Bus repeater transmits and amplifies CAN signals transparent to the CAN protocol. It allows the design of flexible wiring topologies, with star and tree structures and stub lines easily realized.

Key Features

  • Protocol transparent 2-channel CAN repeater
  • Low propagation delay
  • Shutdown of erroneous bus segments
  • Choice of Baud Rate: 10/20/50/125/250/500kBaud (selected at order time via factory set inhibit time)
  • Single or Dual 12-24V power supply
  • Rail Mountable
  • FCC Class A Verified (use restricted to commercial, business, and industrial environments)
  • Backed by 25+ years CAN expertise

Baud Rate Settings & Overall Cable Length Restrictions

CRep Opto repeaters are available in a number of baud rate configurations. The maximum CAN cable length, which is the distance between the furthest two nodes in the network, is related to the operating baud rate as follows:

Baud RateMaximum Cable Length with single CRep Opto added

When a CRep Opto repeater is used, the effect of the propagation delay through the repeater must be included in the cable length calculation.

For a CRep Opto repeater, the typical and maximum propagation delays is 125s and 200ns, respectively. Assuming a 5.5ns/m propagation delay for cable, the maximum propagation delay through the repeater is equivalent to a cable length of roughly 37m (rounding-up).

500kbit/s100 – 37 = 63m
250kbit/s250 – 37 = 213m
125kbit/s500 – 37 = 463m
50kbit/s1000 – 37 = 963m

Specifications

Layout and Connection

CRep Opto devices include 2 CAN segments fed to a male and a female plug of type D-Sub 9. The plugs carry the CAN signals and the supply voltage. The following table shows the function of the internally connected CAN interface.

PinNameFunction
2CAN_LCAN bus line (dominant low)
3GNDGround line
7CAN_HCAN bus line (dominant high)
9VccPower supply +24V

Limiting Values

ParameterMinimalMaximalUnit
Storage temperature-20+80°C
Operating temperature0+60°C
Supply voltage-100+35V
Voltage on bus connections-30+30V
Maximum power consumption (at 60°C)2000mW

Any (also temporary) stress in excess of the limiting values may cause permanent damage on CRep N 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

ParameterMinimalTypicalMaximalUnit
Current consumption (running idle)30mA
Current consumption (250kBaud, 100% busload)40mA
Supply voltage102430V
Propagation delay125200ns

All values, unless otherwise specified, refer to a supply voltage of 24V and an environmental temperature of 20°C.

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