5. Hold the double fan/battery module at an angle to the front with the open side facing up
(battery visible).
6.
Push the plastic lug into the cutout on the lower side of the Control Unit.
7. Tilt the double fan/battery module up until the front latch snaps into place.
The electrical connection between the double fan/battery module and the Control Unit is
made automatically.
Note
The fan/battery module should preferably be replaced in the POWER OFF state.
The battery should be replaced at least once every 3 years, at the latest when the
prewarning level is reached (see
SIMOTION D4x5‑2
Commissioning and Hardware
Installation Manual).
Later replacement of the battery can result in a backup failure of the RTC (real-time clock)
and therefore loss of the date and time!
Replacement during POWER ON
The fan/battery module should preferably be replaced in the POWER OFF state.
In principle, replacement during POWER ON is possible, but the following aspects must be
taken into consideration:
●
If the fan/battery module is disconnected and heat dissipation is required because of the
temperature conditions, a fan fault is signaled (fan fault is signaled via system variable,
PeripheralFaultTask and diagnostic buffer entry; if no PeripheralFaultTask is configured,
the Control Unit switches to the STOP state)
● For each SIMOTION D4x5-2 with a fan fault, the Control Unit switches to RESET after
approximately 1 minute to protect itself
● During the replacement, the missing fan and battery is signaled via the
fanbattery.fanexisting and fanbattery.batteryexisting system variables
NOTICE
Unintentional failure of the machine/plant
Only replace the fan/battery module when the CPU is in the STOP state so that there is
no risk of an unintentional failure of the machine/plant.
The causes of an unintentional failure can be, for example:
● No PeripheralFaultTask has been configured; if no PeripheralFaultTask is configured, the
Control Unit switches to the STOP state when a fan fault occurs
● A delayed replacement can result in a RESET state
● Cables may be unintentionally disconnected during the replacement
Supplementary system components
7.2 Fan/battery module
SIMOTION D4x5-2
Manual, 04/2014 101
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