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ABB i-bus
®
KNX
Mounting and installation
5.5
Mounting and connecting the battery module AM/S 12.1
The battery module is a Sealed Lead Acid Battery for backing up the ABB i-bus® EIB / KNX system
voltage to bridge mains power failures. The battery module can only be used in combination with the
uninterruptible EIB / KNX Power Supply SU/S 30.640.X.
The battery module is a rail-mounted device and can simply be latched onto the mounting rail in the
distribution board below the SU/S 30.640.X. The backup time depends on the bus load, and it is at least 10
minutes with an EIB / KNX line at full capacity (64 devices). It is not possible to connect several battery
modules to the SU/S 30.640.X in parallel or to connect the battery module together with other batteries.
The battery module features an integrated temperature sensor for temperature-controlled charging current
adjustment. An integrated fuse protects the battery module from short-circuiting.
The battery module is connected to the SU/S 30.640.2 using a standard cable (solid or fine stranded,
recommended connection cross-section: 0.75 – 1.5 mm
charging/discharging and two cores for temperature-controlled charging current adjustment (the
temperature sensor is integrated in the AM/S 12.1).
ATTENTION –
The temperature sensor must be connected in any case so that the battery is charged properly and does
not overheat during charging.
Observe the following guidelines when using the battery module AM/S 12.1:
•
The battery module may only be connected to the uninterruptible EIB / KNX power supply SU/S
30.640.x.
•
The battery module must only be used in wall-mounted distribution boards with a horizontal mounting
rail (35 mm, EN 50 022).
The battery module must not be connected in series or parallel with other battery modules or other
•
Sealed Lead Acid Batteries.
The battery module is fully or partially charged when delivered. The battery module must not be stored
•
discharged. If the battery module is stored for an extended period without being connected to the
SU/S 30.640.X, it must be fully charged at least every 6 months. The battery can be stored for up to 2
years at a storage temperature of 20 °C.
•
After discharging the battery module during normal operation, the battery module must be recharged.
Based on the service life of the Sealed Lead Acid Battery, it is recommended to replace the battery
•
module with a new one around every four years. Old battery modules are taken back by ABB for
environmentally friendly disposal.
The maximum battery module charging time is 10 hours. The max. backup time will be available only after
the max. charging time has elapsed.
22 9AKK107992A4580_EN Rev. A | SU/S 30.640.2
2
). A four-core cable is required – two cores for
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