KL3312 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit
Run LED 1
Error LED 1
Run LED 2
Error LED 2
+TC1
-TC1
Shield
+TC2
-TC2
Shield
Top view
Contact assembly
Observe for earthed
thermocoupler:
differential inputs
max. ± 2 V to ground
thermocoupler:
differential inputs
max. ± 2 V to ground
KL3312 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit
The KL3312 analog input terminal allows thermocouples to be connected directly. The Bus Terminal’s circuitry can operate thermocouple sensors using the 2-wire technique. Linearization over the full temperature range is realized with the aid of a microprocessor. The temperature range can be selected freely. The error LEDs indicate a broken wire. Compensation for the cold junction is made through an internal temperature measurement at the terminals. The KL3312 can also be used for mV measurement.
Product status:
regular delivery
Product information
- Technical data
- Ordering information
- Accessories
- Documentation and downloads
- Beckhoff Information System
| Technical data | KL3312 |
|---|---|
| Number of inputs | 2 |
| Power supply | via the K-bus |
| Technology | 2-wire |
| Thermocouple sensor types | types J, K, L, B, E, N, R, S, T, U (default setting type K), mV measurement |
| Connection method | 2-wire |
| Measuring range | in the range defined in each case for the sensor (default setting: type K; -100…+1370 °C);
mV measurement: ±30 mV…±120 mV |
| Conversion time | ~ 250 ms |
| Wiring fail indication | yes |
| Resolution | 0.1 °C per digit |
| Measurement error/ uncertainty | < ±0.5 % (relative to full scale value) |
| Electrical isolation | 500 V (K-bus/signal voltage) |
| 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) |
| Configuration | no address setting, configuration via Bus Coupler or controller |
| 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 |
| Ex marking | ATEX: II 3 G Ex nA IIC T4 Gc IECEx: Ex 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 | |
| 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 (e), flexible conductor (f) and ferrule (a): 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*: AWG 28…14, st*: AWG 28…14, f*: AWG 26…16 | s*: AWG 28…16, st*: AWG 28…16, f*: AWG 26…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 | |
|---|---|
| KL3312 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit |
| KL3312-0010 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type J |
| KL3312-0011 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type J in Siemens S5 format |
| KL3312-0012 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type L |
| KL3312-0013 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type L in Siemens S5 format |
| KL3312-0014 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type B |
| KL3312-0015 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type B in Siemens S5 format |
| KL3312-0016 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type E |
| KL3312-0017 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type E in Siemens S5 format |
| KL3312-0018 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type N |
| KL3312-0019 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type N in Siemens S5 format |
| KL3312-0020 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type R |
| KL3312-0021 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type R in Siemens S5 format |
| KL3312-0022 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type S |
| KL3312-0023 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type S in Siemens S5 format |
| KL3312-0024 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type T |
| KL3312-0025 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type T in Siemens S5 format |
| KL3312-0026 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type U |
| KL3312-0027 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type U in Siemens S5 format |
| KL3312-0028 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, 0…120 mV measurement |
| KL3312-0029 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type K in Siemens S5 format |
| KL3312-0040 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, expanded temperature range for type S and L; type S: -50…+1700 °C, as supplied type L: -100…+900 °C |
| KL3312-0110 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, type J, Fahrenheit scaling |
| KL3312-2000 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, setting of reference junction temperature via process image, unit 1/256 °C in a 16-bit word |
| KL3312-2100 | Bus Terminal, 2-channel analog input, temperature, thermocouple, 16 bit, external reference point temperature specification via process image is possible, the unit is 1/256 °C in 16-bit format, fast conversion time 65 ms. |
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