BKN230-24-MOD Communication and Power Supply Unit, AC 230 V - Belimo

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The Belimo BKN230-24-MOD is a Communication and Power Supply Unit, AC 230 V .

Iacs offers the most cheap Belimo accessories for your system.

If you have any inquiries about installation or size, please see the aforementioned Belimo custom datasheet or contact iacs via email for personalised assistance.

Application: The BKN230-24-MOD is installed with the motorised fire damper. This unit sets up the communication connection with higher-level systems while the built-in safety isolating transformer supplies DC 24 V voltage to the damper actuator.

Parameterisation (DIL switch):

Test run / fault acknowledgement : Press the button for longer than one second to trigger the following functions:

1. starts test run
2. resets a current error message

Expansion options: A BAE...ST thermoelectric tripping device and/or an optoelectronic smoke detector can be connected directly without add-on devices. If a smoke or temperature alarm is tripped, the local damper immediately moves into the safety position and sends a corresponding message to the higher-level system.

Local override control: If no control commands are received by the BKN230-24-MOD or if no communication line is connected, the damper remains in the safety position. However, the damper can still move into the operating position by means of the wire bridge (Terminal 1 to 4) as soon as power supply voltage is applied. The BKN230-24-MOD can thus be used without a control system, for example if the damper needs to be continuously open without remote monitoring. The local safety function of thermoelectric tripping devices and smoke detectors is not affected. The actual position of the damper is displayed by the LEDs in the device. On-site damper test using the test key is possible.

In the case of override control (terminal 1+4), stored thermoelectric tripping device / smoke detector faults must first be reset before the damper can be started up. The reset is executed via test button (test run / fault acknowledgement).

Electrical data:

• Nominal voltage AC 230 V, 50/60 Hz
• Nominal voltage range AC 198…264 V 
• Power consumption In operation For wire sizing 3 W (operating position, incl. actuator) 14 VA (incl. actuator)
• Connections See "Connections" on page 2 
• Modbus 
• Protocol Modbus RTU 
• Medium RS-485, not galvanically isolated from actuator 
• Transmission formats 1-8-N-2, 1-8-N-1, 1-8-E-1, 1-8-O-1, Default: 1-8-N-2 (Start bits, Data bits, Parity, Stop bits)
• Number of nodes Max. 64 (without repeater) 
• Baud rates 9,600, 19,200, 38,400, 76,800 Bd Default: 38,400 Bd
• Addresses 1...247, values over 247 are interpreted as 247, 0 = Broadcast
• Bus termination 150 ohm, can be switched if necessary 

Safety:

• Safety Protection class II Protective insulated  
• Degree of protection IP40 
• EMC Low-voltage-directive CE according to 2004/108/EC CE according to 2006/95/EC
• Mode of operation Type 1 (EN 60730-1) 
• Rated impulse voltage 2.5 kV (EN 60730-1) 
• Control pollution degree 2 (EN 60730-1) 
• Ambient temperature –20...+50°C 
• Non-operating temperature –40...+80°C 
• Humidity test 95% r.h., non-condensing (EN 60730-1) 
• Maintenance Maintenance-free 

Weight: - Approx. 380 g