KL3356 | Bus Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit, high-precision

KL3356 | Bus Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit, high-precision

The KL3356 analog input terminal permits direct connection of a resistor bridge. An improved input circuit makes the KL3356 significantly more accurate than the KL3351. The ratio between the bridge voltage UD and the supply voltage UREF is determined in the input circuit. In order to achieve good long-term stability, the complete circuit is re-calibrated at least every three minutes. This procedure can be synchronized by the control in order to prevent the calibration leading to a delay in the production process.

Number of inputs 2, for 1 resistor bridge

Power supply via the K-bus

Signal voltage UD: -20…+20 mV

UREF: -12…+12 V

Signal voltage UD, UREF -20…+20 mV, -12…+12 V

Technology strain gauge connection

Internal resistance > 200 kΩ (UREF), > 1 MΩ (UD)

Power supply UV via power contacts

Conversion time < 250 ms, configurable

Filter 50 Hz, configurable

Resolution 16 bit

Measurement error/ uncertainty < ±0.01 % (relative to full scale value)

Current consumption power contacts load only

Current consumption K-bus typ. 85 mA

Bit width in the process image input: 2 x 16 bit data (2 x 8 bit control/status optional)

Special features increased measuring accuracy, self-calibration

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. 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

>>> Refer to technical document: kl3356en