Home / Beckhoff / KL6xxx | Communication / Beckhoff KL6904

Beckhoff KL6904

Bus Terminal, communication interface + 4-port digital output, 24 V DC, 0.5 A, TwinSAFE Logic

MPN: KL6904
Category: KL6xxx | Communication

Price and lead time confirmed within 1 business day

Request a Quote

12-month warranty (new) · 3-month (used/refurbished)
30-day returns, no restocking fee on unused parts
Ships via

What is the Beckhoff KL6904?

TwinSAFE enables networks with up to 1,024 TwinSAFE devices. The KL6904 TwinSAFE logic Bus Terminal can establish 15 connections (TwinSAFE connection). Multiple logic terminals are cascadable within a network. The Bus Terminal features certified safety

Specifications

Connection technology	2-wire
Specification	link unit between safe input and output signals
Number of outputs	4
Max. output current	0.5 A/20 mA min. (per channel)
Protocol	TwinSAFE/Safety over EtherCAT
Cycle time	4…100 ms
Fault response time	≤ watchdog time (parameterizable)
Current consumption power contacts	load-dependent
Current consumption K-bus	max. 250 mA
Installation position	horizontal
Safety standard	DIN EN ISO 13849-1:2008 (Cat. 4, PL e) and EN 61508:2010 (SIL 3)
Weight	approx. 100 g
Protection rating	IP20
Ex marking	ATEX: II 3 G Ex ec IIC T4 Gc IECEx: Ex ec IIC T4 Gc
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)	24 mm x 100 mm x 68 mm

KL6904: frequently asked questions

When can KL6904 be shipped?

KL6904 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 KL6904 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 KL6904 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 KL6904, subject to availability and destination.