![KL3122 | Bus Terminal, 2-channel analog input, current, 4…20 mA, 16 bit, differential](https://multimedia.beckhoff.com/media/kl3122__web_preview.png)
The KL3122 analog input terminal handles signals in the range from 4 to 20 mA. The current is digitized to a resolution of 16 bits (the default is 15 bits), and is transmitted, in an electrically isolated form, to the higher-level automation device. The input channels of the Bus Terminal have differential inputs and possess a common, internal ground potential. The KL3122 combines two channels in a housing. An open lead or overload condition are detected, and the terminal status is relayed to the controller via the K-bus. The run LEDs give an indication of the data exchange with the Bus Coupler. The error LEDs indicate an overload condition.
Product status:
regular delivery
Product information
Technical data | KL3122 |
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Number of inputs | 2 |
Power supply | via the K-bus |
Signal current | 4…20 mA |
Technology | differential input |
Internal resistance | typ. 50 Ω shunt, load: 60 Ω + diode voltage |
Common-mode voltage UCM | max. 35 V |
Conversion time | 140 ms, configurable to 2 ms |
Filter | 50 Hz, configurable |
Resolution | 15 bit, configurable to 16 bit |
Measurement error/uncertainty | < ±0.3% (relative to full scale value) |
Surge voltage resistance | 35 V DC |
Electrical isolation | 500 V (K-bus/signal voltage) |
Current consumption power contacts | – (no power contacts) |
Current consumption K-bus | typ. 60 mA |
Bit width in the process image | input: 2 x 16 bit data (2 x 8 bit control/status optional) |
Configuration | no address or configuration setting |
Weight | approx. 70 g |
Operating/storage temperature | 0…+55°C/-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, UL, ATEX, IECEx |
Pluggable wiring | for all KSxxxx Bus Terminals |
Ex marking | ATEX: II 3 G Ex ec IIC T4 Gc IECEx: Ex ec IIC T4 Gc |
Housing data | KL-12-8pin | KS-12-8pin |
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Design form | compact terminal housing with signal LEDs | terminal housing with pluggable wiring level |
Material | polycarbonate | |
Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm | |
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 BZxxx 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 | s*: 0.08…1.5 mm², st*: 0.08…1.5 mm², f*: 0.14…1.5 mm² |
Connection cross-section AWG | s*: AWG28…14, st*: AWG28…14, f*: AWG26…16 | s*: AWG28…16, st*: AWG28…16, f*: AWG26…16 |
Stripping length | 8…9 mm | 9…10 mm |
Current load power contacts | Imax: 10 A |
*s: solid wire; st: stranded wire; f: with ferrule
Ordering information | |
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KL3122 | Bus Terminal, 2-channel analog input, current, 4…20 mA, 16 bit, differential |
KS3122 | Bus Terminal, 2-channel analog input, current, 4…20 mA, 16 bit, differential, pluggable wiring |
KL3122-0050 | Bus Terminal, 2-channel analog input, current, 4…20 mA, 16 bit, differential, Siemens S7 format |
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