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Beckhoff Automation Pte. Ltd.

#05-07/08 Nordic European Centre
3 International Business Park
Singapore 609927, Singapore

+65 6697 6220
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www.beckhoff.com/zh-sg/

KL3448 | Bus Terminal, 8-channel analog input, current, 0…20 mA, 12 bit, single-ended

Image similar, may contain optional accessories
KL3448 | Bus Terminal, 8-channel analog input, current, 0…20 mA, 12 bit, single-ended

KL3448 | Bus Terminal, 8-channel analog input, current, 0…20 mA, 12 bit, single-ended

Run LED 1
Run LED 3
Run LED 5
Run LED 7
Run LED 2
Run LED 4
Run LED 6
Run LED 8
Power contact
+24 V
Power contact 0 V
Input 1
Input 3
Input 5
Input 7
Input 2
Input 4
Input 6
Input 8
Top view 
Contact assembly 
KL3448 | Bus Terminal, 8-channel analog input, current, 0…20 mA, 12 bit, single-ended

KL3448 | Bus Terminal, 8-channel analog input, current, 0…20 mA, 12 bit, single-ended

The KL3448 analog input terminal processes signals in the range between 0 and 20 mA. The current is digitized to a resolution of 12 bits and is transmitted, in an electrically isolated form, to the higher-level automation device. The KL3448 combines eight channels in one housing and is particularly suitable for space-saving installation in control cabinets. The use of single conductor connection technology enables the connection of multi-channel sensor technology with minimum space requirements. The reference ground for all inputs is the 0 V power contact. The power contacts are connected through. Overload is detected. The terminal status is relayed to the controller via the K-bus. The LEDs indicate the data exchange with the Bus Coupler as well as overload or wire breakage.

Product status:

regular delivery

Product information

Technical dataKL3448
Number of inputs8
Power supplyvia the K-bus
Signal current0…20 mA
Technologysingle-ended
Internal resistance< 85 Ω
Common-mode voltage UCM
Conversion time~ 4 ms
Resolution12 bit
Measurement error/uncertainty< ±0.3% (relative to full scale value)
Surge voltage resistance30 V DC
Electrical isolation500 V (K-bus/signal voltage)
Current consumption power contacts
Current consumption K-bustyp. 105 mA
Bit width in the process imageinput: 8 x 16 bit data (8 x 8 bit control/status optional)
Configurationno address or configuration setting
Special featureshigh packing density
Weightapprox. 55 g
Operating/storage temperature-25…+60°C/-40…+85°C
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/variable
Approvals/markingsCE, UL, ATEX, IECEx, DNV GL
Pluggable wiringfor all KSxxxx Bus Terminals
Ex markingATEX:
II 3 G Ex ec IIC T4 Gc
IECEx:
Ex ec IIC T4 Gc
Housing dataKL-12-8pinKS-12-8pin
Design formcompact terminal housing with signal LEDsterminal housing with pluggable wiring level
Materialpolycarbonate
Dimensions (W x H x D)12 mm x 100 mm x 68 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Markinglabeling of the BZxxx series
Wiringsolid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
s*: 0.08…1.5 mm²,
st*: 0.08…1.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWGs*: AWG28…14,
st*: AWG28…14,
f*: AWG26…16
s*: AWG28…16,
st*: AWG28…16,
f*: AWG26…16
Stripping length8…9 mm9…10 mm
Current load power contactsImax: 10 A

*s: solid wire; st: stranded wire; f: with ferrule

Ordering information
KL3448Bus Terminal, 8-channel analog input, current, 0…20 mA, 12 bit, single-ended
KS3448Bus Terminal, 8-channel analog input, current, 0…20 mA, 12 bit, single-ended, pluggable wiring

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