Failure Injection Unit (FIU)

The Failure Injection Unit (FIU) serves to provoke physical failures, for example, to be able to test control units. It is a further module belonging to the CW-300 series, that can be used to automate test environments on HiL test benches.

As many as 20 signal lines can be disconnected, connected together, connected to ground or terminal 30 as required by means of a control CAN. A protective function with current limitation prevents damage occurring to the test specimen.

The open design in the top-hat rail housing (45 mm to DIN) offers the user a quick and easy solution to automate procedures in test bench technology.


  • 20 signal lines or 10 bus systems
  • Control via CAN bus
  • Provoke physical failure: Open circuit, short-circuit to ground, short-circuit to terminal 30, short-circuiting of signals
  • Selective or simultaneous control of channels
  • Top-hat rail housing for quick and easy installation
  • Easy to extend and scale

Technical Data


Number: 20 signal lines
Signal voltage: Max. 45 VDC
Current: Max. 1 A at without failure injection
Current limitation: 10 Ohm through connection,
limitation at 2 A
Response time < 1 ms
emergency shutdown at 1 W


Number: 1
Type: ISO 11898-2 (highspeed),
CAN-protocol version 2.0 A and 2.0 B, supports SAE J1939 (29-bit-identifier)
Data rate: 500 kbit/s, on request: 50, 100, 125, 250, 500, 800 and 1000 kbit/s
Termination: 120 Ohm, optional activation via jumper

Power Supply

Supply voltage: 7 VDC to 30 VDC
Current consumption: 70 mA at 12 VDC

Environmental conditions

Temperature range operation: -20 °C to +65 °C
Temperature range storage: -20 °C to +85 °C
Relative humidity: 35 % to 85 % non-condensing

General Information

Housing: 45mm-DIN-top-hat rail housing
Dimensions (LxWxH): 100 mm x 108 mm x 50 mm
Weight: 150 g


Datasheet CW-326

Download (PDF)

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