Beckhoff KL2 Series, Manual, Page: 23 / 40

Product overview
KL2xxx and KS2xxx 23 Version: 3.0.0
Eight-channel, digital output terminal, 24 V
DC
The KL2408 (positive switching) and KL2488 (negative switching) digital output terminals connect the binary
control signals from the automation unit on to the actuators at the process level with electrical isolation. The
KL2408/KL2488 variants are protected against reverse polarity connection. They handle load currents with
outputs that are protected against overload and short circuit. The Bus Terminals contain eight channels
which indicate their signal state by means of light emitting diodes. They are particularly suitable for space-
saving use in control cabinets. The connection technology is particularly suitable for single-ended inputs. All
components have to use the same reference point as the KL2408 or KL2488. The power contacts are looped
through. In the KL2408 terminal, the outputs are supplied by the 24 V power contact. In the KL2488 terminal,
they are supplied via the 0 V power contact.
2.5.1 KL2408, KL2488 – Technical data
Technical data KL2408 KL2488
Connection technology 1-wire
Number of outputs 8 (positive switching) 8 (negative switching)
Nominal voltage 24 V
DC
(-15 %/+20 %)
Load type ohmic, inductive, lamp load
Max. output current 0.5 A (short-circuit proof) per channel
Short circuit current < 2 A < 7 A
Breaking energy (ind.) < 150 mJ/channel < 100 mJ/channel
Reverse polarity protection yes
Electrical isolation 500 V (K-bus / field voltage)
K-Bus current consumption typ. 18 mA
Current consumption power contacts typ. 60 mA + load
Bit width in process image 8 outputs
Configuration no address or configuration settings required
Dimensions (W x H x D) 15 mm x 100 mm x 70 mm (width aligned 12 mm)
Weight approx. 70 g
Permissible ambient temperature
during operation -25°C ... +60°C (extended
temperature range) 0°C … +55°C
Permissible ambient temperature
during storage -40°C ... +85°C -25°C … +85°C
Permissible relative humidity 95%, no condensation
Vibration / shock resistance according to EN 60068-2-6 / EN 60068-2-27, refer also to
Installation instructions for enhanced mechanical load capacity
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EMC immunity / emission conforms to EN 61000-6-2 / EN 61000-6-4
Installation position variable
Protection class IP20
Approvals
CE, cULus, ATEX [
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GL
CE, cULus, ATEX [
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