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Beckhoff KL2521

Bus Terminal, 1-channel pulse train output, incr. enc. simulation, RS422, 50 mA

MPN: KL2521
Category: KL2xxx | Digital output

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12-month warranty (new) · 3-month (used/refurbished)
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What is the Beckhoff KL2521?

The KL2521 output terminal alters the frequency of a binary signal and (electrically isolated from the K-bus) outputs it. The frequency is preset by a 16 bit value from the automation unit. The output stage is RS422 compatible and, in the version

Specifications

Number of inputs	2 (+T, +Z)
Nominal voltage	RS422 level
Load type	RS422 input
Signal voltage	RS422 level
Max. output current	RS422 specification
PWM clock frequency	1…500 kHz, 50 kHz default
Duty factor	50% (±20%)
Resolution	max. 15 bit
Electrical isolation	500 V (K-bus/field potential)
Current consumption K-bus	typ. 50 mA, max. 120 mA (load-dependent)
Bit width in the process image	24 inputs/outputs: 1 x 16 bit data, 1 x 8 bit control/status
Configuration	configuration via Bus Coupler or controller
Weight	approx. 50 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
Pluggable wiring	for all KSxxxx Bus Terminals
Approvals/markings	CE, UL, ATEX
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)	12 mm x 100 mm x 68 mm

KL2521: frequently asked questions

When can KL2521 be shipped?

KL2521 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 KL2521 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 KL2521 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 KL2521, subject to availability and destination.