Mandik SEDM-L, Manual

Page: 9 / 59

9
Design with actuating mechanism, communication and power supply device BKNE 230-24
Position:
1 Damper housing
2 Blades
3 Silicone blade seal
4 Internal silicone seal
5 Fire-fighting foam tape
6 Blade stop
7 Actuator housing
8 Actuator housing cover
9 Actuator
10 Communication and power supply device BKNE 230-24
Design with communication and power supply device BKNE 230-24 and with actuator BEN (BEE, BE)-ST for 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.