BKN230-24 Communication and Power Supply Unit, AC/DC 24 V - Belimo

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The Belimo BKN230-24 is a Communication and Power Supply Unit, AC/DC 24 V .

The most affordable Belimo system upgrades are provided by Iacs.

Please refer to the aforementioned Belimo custom datasheet if you have any questions regarding installation or size. Send an email to iacs if you need more specialised assistance.

Mode of operation: The BKN230-24 also functions as a distribution power unit for supplying the BF..24..-ST, BLF24(- T)-ST spring-return actuators that is connected to it.

Another of its functions is to signal the NORMAL and SAFE positions of the damper (from the switches in the spring-return actuators) to the central control panel over a 2-wire conductor. The same conductor is used for transmitting the ON/OFF control command from the control panel to the damper actuator via the BKN230-24.

Installation and connections: To simplify installation and connection, the spring-return actuator is fitted with connectors which plug directly into the BKN230-24 unit.The 2-wire conductor is connected to the terminals 6 and 7. The terminals 1 and 2 are for the direct connection of thermal trips or smoke detectors.

Functional testing: If it is proposed to test the actuator without the BKS24.. unit connected, it can be switched to NORMAL mode by fitting a jumper between terminals 3 and 4. The green LED in the BKN230-24 unit is bright when power (AC 24 V) is available at the actuator. The SAFE damper position can be checked either by pressing the push-button on the BAE72-S unit or by interrupting the power supply

Electrical data:

• Nominal voltage AC 230 V, 50/60 Hz
• Nominal voltage range AC 198 ... 264 V 
• Power consumption 3.5 W (NORMAL position) 
• For wire sizing 11 VA (incl. actuator) 
• Connections Power supply Actuator Screw terminals Cable 0.9 m with Euro-plug type 26 Plug 6 poles, plug 3 poles for wire 2 x 1.5 mm

Safety:

• Protection class II totally insulated 
• Degree of protection IP42 
• EMC Low voltage directive CE according to 2004/108/EC, CE according to 2006/95/EC
• Ambient temperature –20° ... +50°C 
• Non-operating temperature –40° ... +80°C
• Humidity test 95% r.H., non-condensating (EN 60730-1) 
• Maintenance Maintenance-free 

Weight: ca. 550 g