Description of the RFC 4072S
108580_en_02 PHOENIX CONTACT 41 / 272
2.6 Fan module
The fan module is not supplied as standard with the RFC; it is available as an accessory.
For the ordering data, please refer to Section “Accessories” on page 230.
The fan module is attached to the bottom of the RFC using four screws. Tighten all four M4
screws equally using a recommended tightening torque of 2.2 Nm (3.0 Nm, maximum) so
that they cannot loosen accidentally (e.g., due to vibration).
The electrical connection between the RFC and the fan module is established automatically
when attaching the fan module. The fan module contains a fan.
Figure 2-11 RFC with fan module
NOTE: The RFC 4072S can overheat – use the fan module.
The RFC can be operated from 0 m to 2000 m above sea level at ambient temperatures
up to 40 °C without a fan module. Warning messages and switching off may occur at
higher ambient temperatures. For this reasons, the fan module is required for operation
above ambient temperatures of 40 °C.
We recommend using the fan module at an ambient temperature of 35 °C and above to
increase the service life of the RFC.
From 2000 m to 3000 m above sea level at ambient temperatures from 0 °C to 55 °C the
RFC must be operated with a fan module.
See the detailed information in Section “Mounting the RFC FAN MODULE fan module” on
page 71.
NOTE: The RFC 4072S can overheat – keep vents clear
When installing the RFC make sure that the vents can be freely accessed. Otherwise, the
RFC may overheat. To ensure good ventilation, leave a gap of more than 10 cm above
and below the RFC.
Do not install devices below the RFC that could additionally heat it up.
NOTE: Potential RFC 4072S malfunction
The fan module must not be replaced during operation. The RFC must be switched off
before the fan module can be replaced. To replace the fan module, remove the RFC from
the DIN rail.
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