Beckhoff KL3444

Beckhoff KL3444 Analog Input Terminal

The Beckhoff KL3444 analog input terminal processes signals in the range between 0 and 20 mA. The current digitised to a resolution of 12 bits and transmitted, in an electrically isolated form, to the higher-level automation device. In the KL3444, the four inputs 2-wire versions and have a common ground potential. The reference ground of the inputs the internal ground. Overload is detected. The terminal status is relayed to the controller via the K-bus. The LEDs indicate the data exchange with the Bus Coupler as well as overload or wire breakage.

Specification:

• Number of inputs: 4
• Power supply: via the K-bus
• Signal current: 0…20 mA
• Technology: single-ended
• Internal resistance: < 85 Ω
• Common-mode voltage UCM: –
• Conversion time: ~ 2 ms
• Resolution: 12 bit
• Measuring error: < ±0.3 % (relative to full scale value)
• Surge voltage resistance: 30 V DC
• Electrical isolation: 500 V (K-bus/signal voltage)
• Current consumption power contacts: –
• Current consumption K-bus: typ. 85 mA
• Bit width in the process image: input: 4 x 16 bit data (4 x 8 bit control/status optional)
• Configuration: no address or configuration setting
• Special features: –
• Weight: approx. 55 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 KSxxxx Bus Terminals
• Approvals: CE, UL, Ex, GL

Beckhoff KL3444 Manual
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