KL3314 BECKHOFF Thermocouple input terminal with open-circuit recognition (EC-0150)

February 5, 2019 0

BECKHOFF KL3144 

4-channel thermocouple input terminal with open-circuit recognition

The KL3314 analog input terminal allows four thermocouples to be connected directly. The Bus Terminal’s circuitry can operate thermocouple sensors using the 2-wire technique. Linearisation over the full temperature range, which can be selected freely, is realised with the aid of a microprocessor. The error LEDs indicate a broken wire. Compensation for the cold junction is made through an internal temperature measurement at the terminals. The KL3314 can also be used for mV measurement.

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Description

Technical data KL3314
Number of inputs 4
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
Measuring error < ±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. 75 mA
Bit width in the process image input: 4 x 16 bit data (4 x 8 bit control/status optional)
Configuration no address setting, configuration via Bus Coupler or controller
Weight approx. 75 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. class/installation pos. IP 20/variable
Approvals CE, UL, Ex, GL