KL3351 | Bus Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit
drawn from the terminal or
can be supplied from an
external source. The terminal
supplies 5 V. The maximum
input voltage UREF is limited
to 10 V.
KL3351 | Bus Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit
Precise strain measurement in the I/O system
The KL3351 analog input terminal permits direct connection of a resistor bridge. The bridge voltage, UD, and the supply voltage, UREF, to the bridge are digitized with a 16-bit resolution, and are transmitted along an electrically isolated channel to the supervising automation system. The input channels are available in the form of two 16-bit values for further processing. The resulting measurement can be calculated from the formula: measurement = UD/UREF. Precise acquisition of the supply voltage along with the bridge voltage compensates for long-term and temperature drift.
Product status:
regular delivery
Product information
| Technical data | KL3351 |
|---|---|
| Number of inputs | 2, for 1 resistor bridge |
| Power supply | via the K-bus |
| Signal voltage UD | -16…+16 mV, configurable |
| Signal voltage UREF | ±10 V |
| Technology | strain gauge connection |
| Internal resistance | > 200 kΩ (UREF), > 1 MΩ (UD) |
| Power supply UV | 5 V DC, max. 20 mA |
| Conversion time | < 250 ms, configurable |
| Filter | 50 Hz, configurable |
| Resolution | 16 bit |
| Measurement error/uncertainty | < ±0.1% (relative to full scale value) |
| Current consumption power contacts | – (no power contacts) |
| Current consumption K-bus | typ. 65 mA |
| Bit width in the process image | input: 2 x 16 bit data (2 x 8 bit control/status optional) |
| Special features | with internal bridge supply |
| Weight | approx. 70 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 level | for all KSxxxx Bus Terminals |
| Approvals/markings | CE, CCC, UL, ATEX, IECEx, cFMus |
| Ex marking | ATEX: II 3G Ex ec IIC T4 Gc IECEx: Ex ec IIC T4 Gc cFMus: Class I, Division 2, Groups A, B, C, D Class I, Zone 2, AEx ec IIC T4 Gc |
| Housing data | KL-12-8pin | KS-12-8pin |
|---|---|---|
| Design form | compact terminal housing with signal LEDs | terminal housing with pluggable wiring level |
| 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 | 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 | |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm | |
*s: solid wire; st: stranded wire; f: with ferrule
| Ordering information | |
|---|---|
| KL3351 | Bus Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit |
| KS3351 | Bus Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit, pluggable wiring level |
| KL3351-0001 | Bus Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit, conversion time typ. 10 ms |
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| Material compliance | KL3351 |
|---|---|
| REACH SVHC | no |
| POP | compliant |
| RoHS | compliant with exemption |
| RoHS exemption | 7c-I: Lead-containing electrical and electronic components in glass and ceramic materials, excluding dielectric ceramics in capacitors |
| China-RoHS | www.beckhoff.com/china-rohs-io |
| CA Prop65 | www.beckhoff.com/prop65 |
| Disclaimer | This statement and the information contained above are, to the best of our knowledge and belief, accurate, based on the information we have received from our suppliers. This information is in line with the current standard of technology and our suppliers’ technical documentation. The absence of the substances is not verified by Beckhoff Automation by means of analytical tests. When addressed to our customers any information contained in this document is subject to the terms and conditions expressed in the governing customer agreement. Our general terms and conditions apply. |
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