Supplementary system components
6.2 Fan/battery module
SIMOTION D4x5-2
80 Manual, 11/2010
Buffering data
For the retentive storage of process variables, the SIMOTION D4x5-2 has an NVRAM
memory that permanently backs up the data against a power failure.
The real-time clock is backed up by a SuperCap and continues to run when there is a power
failure. This backup is for at least four days.
If this backup time is not sufficient, the real-time clock can be backed up by a battery that is
inserted in the fan/battery module. The battery is already included in the scope of delivery of
fan/battery modules.
Note
The backup time when a battery is used is at least 3 years. For the replacement part case,
you should back up the NVRAM data additionally on the CF card via the application
("_savePersistentMemoryData"). Temperature faults are recorded and signaled by the
control.
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 appropriate mating
connector is attached to a small printed circuit board for connection in the fan/battery
module.
See also
Available spare parts and accessories (Page 113)
Replace battery in the fan/battery module (Page 82)
6.2.2 Installing the fan/battery module
Overview
The procedure for installing the double fan/battery module is described below.
Procedure
There are cutouts on the lower side of the control unit to attach the module. Proceed as
follows to install the double fan/battery module:
1. If required, insert a battery in the double fan/battery module.
2. Hold the double fan/battery module at an angle to the front with the open side facing up.
The battery must be visible.
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