Supplementary system components
6.2 Fan/battery module
SIMOTION D4x5-2
Manual, 11/2010
79
6.2 Fan/battery module
6.2.1 Cooling the SIMOTION D4x5-2 and backing up the real-time clock
Functions of a fan/battery module
The fan/battery module has the following tasks:
● CPU cooling
● Backing up the real-time clock if the SuperCap is insufficient.
The control unit monitors the temperature and the functioning of the fan.
Cooling the SIMOTION D4x5-2
A fan/battery module is always required with SIMOTION D445-2 DP/PN and D455-2 DP/PN
for the heat dissipation of the control unit.
Table 6- 1 Fan/battery module for SIMOTION D4x5-2
Property SIMOTION D445-2 DP/PN SIMOTION D455-2 DP/PN
Fan/battery module Always required (double fan/battery
module included in the D445-2
DP/PN scope of delivery)
Always required (double fan/battery
module included in the D455-2
DP/PN scope of delivery)
Usable fan/battery
modules
Double fan/battery module,
6FC5 348-0AA02-0AA0
Double fan/battery module,
6FC5 348-0AA02-0AA0
Max. permissible supply
air temperature
55° C 55° C
Fan control Temperature-controlled fan unit will
be switched on depending on supply
air temperature and CPU load
Temperature-controlled fan unit will
be switched on depending on supply
air temperature and CPU load
The double fan/battery module also guarantees sufficient cooling with just one functional fan.
Note
Use of the fan/battery module with single fan (order no. 6FC5 348-0AA01-0AA0) on the
D4x5-2 is not possible.
An entry is made in the diagnostic buffer when a fan fault occurs (failure of one or both fans
in the double fan/battery module). The fan failure is also signaled by the generation of an
event in the PeripheralFaultTask and via a system variable.
If only one of the fans fails, the remaining fan continues under full load.
If both fans fail or with overtemperature, the controller switches to RESET mode, whereby
the SF LED flashes red/yellow (2 Hz) and the 7-segment display shows the state "8".
The clearance below the component is calculated from the bottom edge of the module, i.e. if
there is a fan, it will not be included in the clearance.
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