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Beckhoff KL6821

Bus Terminal, 1-channel communication interface, DALI/DALI-2, master/power supply

MPN: KL6821
Category: KL6xxx | Communication

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12-month warranty (new) · 3-month (used/refurbished)
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What is the Beckhoff KL6821?

The KL6821 enables the connection of up to 64 DALI/DALI-2 slaves and 64 DALI-2 input devices. The KS2000 software enables simple configuration via a PC that is directly coupled with the bus coupler via an RS232 interface or via the fieldbus. Operation is

Specifications

Technology	DALI-2
Number of channels	1
Slaves/groups	max. 64 DALI control gears (ballasts) and max. 64 control devices (input devices/application controller)
Data transfer standard	DALI + DALI-2
Data transfer channels	1
Data transfer rates	1200 baud
Current consumption K-bus	typ. 55 mA
Current consumption power contacts	–
Electrical isolation	500 V (K-bus/DALI-bus)
Bit width in the process image	input/output: 6 bytes each
Configuration	via the Bus Coupler or the controller
Nominal voltage	24 V DC (-15%/+20%)
Input voltage	24 V DC (-15%/+20%)
Insulation voltage	DALI-bus/K-bus: 1,500 V DC, DALI-bus/power contacts: 1,500 V DC
DALI power supply	max. 250 mA (can be switched off)
Guaranteed output current	220 mA
Surge voltage resistance	constant load 275 V ACrms
Special features	2 digital inputs for simplified installation; TwinCAT library: TwinCAT PLC DALI
Weight	approx. 80 g
Operating temperature	0…55°C
Storage temperature	-25…+85°C
Relative humidity	95%, no condensation
Vibration/shock resistance	conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission	conforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.	IP20/variable
Approvals/markings	CE
Design form	compact terminal housing with signal LEDs
Material	polycarbonate
Installation	on 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means of	double slot and key connection
Marking	labeling of the BZxxxx series
Wiring	solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-section	s: 0.08…2.5 mm², st: 0.08…2.5 mm², f*: 0.14…1.5 mm²
Connection cross-section AWG	s: AWG28…14, st: AWG28…14, f*: AWG26…16
Stripping length	8…9 mm
Current load power contacts	Imax: 10 A
Dimensions (W x H x D)	12 mm x 100 mm x 68 mm

KL6821: frequently asked questions

When can KL6821 be shipped?

KL6821 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up KL6821 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for KL6821 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for KL6821, subject to availability and destination.