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Smoke Control Damper
SDJR-S
Lindab reserves the right to make changes without prior notice
Last modified: 2021-09-03
Rev: 2021-03-26
Fig. 10
Damper SDJR-S - actuating machanism and BKNE in the cover
2.2. Design with the communication and power supply unit
Design .66
Design with communication and power supply device BKNE 230-24 and with actuator BEN (BEE, BE)-ST pro 24V.
The BKNE 230-24 serves on the one hand as a decentralized network device for powering the actuator and on the other hand
transmits the signal of the communication and control device BKSE 24-6.
It simplifies electrical installation and connection of dampers. In the meantime, it facilitates “on-site inspection” and allows
central control and inspection of dampers using a simple 2-wire line.
The BKNE 230-24 transmits the "OPEN" / "CLOSED" damper position (switches in the actuator) and fault messages to the
BKSE 24-6. It also receives commands from the control device and controls the adjustment of the actuator to the desired
position. The last control command will be retained even after a temporary network failure..
The BKNE 230-24 controls the switching position of the actuator, its adjustment time and the data exchange with the BKSE
24-6. In addition, it controls the actuator current (actuator connection) and the power supply.
To simplify the connection, the actuator is equipped with plug connectors that plug directly into the BKNE 230-24.
The actuator, communication and power supply device BKNE 230-24 are mounted in an insulated cover, they are accessible
after removing the cover. The electrical connection of the actuator and the BKNE 230-24 communication and power supply
device is made with a non-flammable cable (or a cable located in an adjoining cable duct), the two-wire BKNE 230-24 cable
should be connected to terminals 6 and 7. It is also recommended to use cable, which is used for fire signalling network. The
cables pass through an opening made in the wall of the insulated cover when installing the damper or when connecting the
actuator power cable. The cable entry must meet a minimum fire resistance of 30 minutes.
For more information on actuators and devices, see the Belimo catalogue.
