Which channel does the CW switch on?


CAN-controlled power supply

The CW-301 module enables power relays to be switched via CAN messages and manual switches. Thus, for. For example, the voltage supply for mobile measurement technology systems can be switched by a specific CAN signal (e.g. KL15) or measurement technology batteries are charged in defined vehicle states.

The CW-301 has three switchable outputs and can be operated with a maximum switching current of 30 A. Thermal circuit breakers protect the manually or CAN-controlled circuits with 10 A.

A wide variety of settings such as B. Baud rate, CAN message, sleep mode and delay time can be configured.





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  • 3 voltage outputs 12 VDC or 24 VDC
  • 10 A switching current per voltage output
  • Protection via thermal circuit breaker
  • Manual or CAN-controlled voltage outputs
  • CAN message, CAN signal and the switching condition can be freely selected
  • Low power consumption in sleep mode
  • Adjustable follow-up time of up to 1 hour

Voltage outputs

Nominal voltage:12 VDC or 24 VDC
Switching current:10 A per voltage output (protection via thermal circuit breaker)
max. switching capacity:120 W per channel at 12 VDC
Switching cycles:≥ 100.000 
Response time / fall time:≤ 10 ms (at 20 ° C)
Connector:Socket for 4mm spring pin (banana plug)


Type:ISO 11898-2 (high speed)
CAN protocol version 2.0 A and 2.0 B, support of SAE J1939 (29-bit identifier)
Data rates:50, 100, 125, 250, 500, 800 and 1000 kBaud
configurable via CAN bus
Termination:120 ohms, switchable
Connector:D-Sub9 connector


Supply voltage:9 to 30 VDC
Power consumption:30 mA at 12 VDC (unswitched)
510 mA at 12 VDC (switched, without load current)
Connector:LEMO ECG.3B.302


Operating temperature range:-20 ° C to +70 ° C
Storage temperature range:-20 ° C to +85 ° C
Relative humidity:35% to 85% without condensation
Protection class:IP40


Casing: HF tube
Dimensions (LxWxH):71 mm x 131 mm x 171 mm
Weight:1100 g
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