
Chapter: Connectors Fan Connectors
page 40 Beckhoff New Automation Technology CB2051
3.21 Fan Connectors
Two 3 pin connectors are available for controlling and monitoring external fans (12 volt). For the
monitoring the fans must provide a corresponding speed signal.
Pinout fan connector:
Pin Name Description
1 GND ground
2 12V 12 volt supply regulated
3 TACHO fan monitoring signal
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