The double fan/battery module also guarantees sufficient cooling with just one functional fan.
If
one of the fans fails, the remaining fan continues under full load. The failure also generates
an event in the PeripheralFaultTask and is signaled via a system variable (system variable as
of V4.2).
Fan failures are displayed and can be read out by means of the diagnostic buffer. With
overtemperature or fan failures, the SF LED flashes red/yellow (2 Hz) and the 7‑segment
display shows the state "8".
NOTICE
Higher operating temperature if ventilation clearances are too small
The ventilation clearances of 80 mm above and below the components must be observed.
The unit protects itself from overheating by shutting down.
The
ventilation clearance is measured from the lower edge of the module, i.e. the fan/battery
module is not included in the dimension.
Buffering data
For the retentive storage of process variables, the SIMOTION D4x5 has SRAM memory that
is backed
up by SuperCap to protect against a power failure. This backup is for at least 5 days.
There are two options for storing retentive data for a longer period:
● The system command _savePersistentMemoryData to store retentive data on the
CompactFlash card (CF) of the SIMOTION D4x5
– Backing up of data when installing a spare part
– Backing up data when a battery is not going to be used
● Use of the fan/battery module
– Supplied with the SIMOTION D445/D445‑1
– Optional in the case of SIMOTION D425/D435.
Note
The backup time when a battery is used is at least 3 years. For the replacement part
case,
you should back up the SRAM data additionally on the CF card via the application
(_savePersistentMemoryData).
Battery
A 3 V lithium battery can be inserted in the fan/battery module. The battery is pre-assembled
with an approximately 4 cm long cable with plug connector.
The matching mating connector is attached to a small printed circuit board for connection in
the fan/battery module.
Supplementary system components
7.2 Fan/battery module
SIMOTION D4x5
84 Manual, 04/2014
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