Beckhoff EP3356-0022, Документация

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Commissioning/Configuration
EP3356-0022 31 Version: 1.4
Fig. 20: Example: Parallel connection
• Load cell signals have a low amplitude and are occasionally very sensitive to electromagnetic
interference. Considering the typical system characteristics and taking into account the technical
possibilities, purposeful state-of-the-art EMC protective measures are to be taken. In the case of high
electromagnetic interference levels, it may be helpful to additionally connect the cable screen before
the box using suitable screening material.
• the minimum permissible assigned EtherCAT cycle time for the EP3356 is 100 µs.
• If the EP3356-0022 is to be used in Distributed Clocks mode:
◦ DC must be activated
◦ the Process data [
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54] Timestamp must be activated. The filter functionality is not available then.
Signal flow diagram
Fig. 21: Block diagram of EP3356-0022
The EP3356 processes the data in the following order:
• Hardware low-pass 10 kHz
• 2-channel simultaneous sampling at 10.5/105.5 kSps with 64-fold oversampling by delta-sigma (ΔΣ)
converter and internal pre-filtration
• 4-fold averager (can be deactivated)
• Software filter (can be deactivated)
• Calculating the weight