Article image EL3356-0090

Beckhoff EL3356-0090

EL3356-0090 | TwinSAFE SC: accurate 1-channel load cell analysis (resistor bridge), 24 bit

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Description

The analog EL3356-0090 input terminal enables direct connection of a resistor bridge or load cell in a 4- or 6-wire connection technology. The ratio between the bridge voltage U. D, and the supply voltage U. REF, is determined simultaneously in the input circuit and the final load value is calculated as a process value on the basis of the settings in the terminal. With automatic self-calibration (can be deactivated) and dynamic filters the terminal with measuring cycles of 10 ms can be used for slow weighings with high precision.

Technical parameters

Number of inputs: 2, for 1 resistor bridge in full bridge technology
Power supply: via the E-bus
Technology: resistor bridge, strain gauge
Distributed clocks: yes
Measuring range UD: max. -25…+25 mV rated voltage
Measuring range UREF: max. -12…+12 V rated voltage
Internal resistance: > 200 kΩ (UREF), > 1 MΩ (UD)
Input filter limit frequency: 10 kHz low pass (-3 dB)
Conversion rate: 10,000…4 samples/s (0.1…250 ms conversion time)
Power supply UV: up to 12 V DC from power contacts, dependent on sensor
Resolution: 24 bit, 32 bit presentation
Measuring error: < ±0.01 % for the calculated load value in relation to the final load value with a 12 V feed and 24 mV bridge voltage (hence nominal strain gauge characteristic value of 2 mV/V), self-calibration active, 50 Hz filter active
Current consumption power contacts: depends on strain gauge supply, min. 1 mA
Current consumption E-bus: typ. 280 mA
Supported nominal sensitivity: all, parameter resolution: 0.01 µV/V; recommended: 0.5…4 mV/V
Special features: TwinSAFE SC, self-calibration, quadruple averager, dynamic filters
Weight: approx. 60 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
Pluggable wiring: for all ESxxxx terminals
Approvals/markings: CE, UL, ATEX, IECEx
Ex marking: II 3 G Ex nA IIC T4 Gc Ex nA IIC T4 Gc Ex tc IIIC T135 °C Dc

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