EJ5002 - Product description
EJ5002
20
Version: 1.4
Notes for routing and installation
• The SSI information (Clock and Data) are transmitted as differential signals. To ensure a good
EMC immunity, also for long distances, shielded cables with twisted pair conductors should be
used.
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The cable shield should be connected to earth at both channel ends and the two end de-
vices should be always at the same reference potential.
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When using externally shielded cables, particular care should be paid, not to damage or to
interrupt the shield itself.
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Shield should be connected near by the connector.
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Refer also to the corresponding notes of the sensor manufacturer!
• Refer to the guide lines in the
for the EtherCAT plug-in modules to ensure a proper
routing of the differential signals!
• The value of each termination resistor should be equal to the cable characteristic impedance,
typically 120 Ω for EIA-485 or RS-482 standard.
• Routing of the differential signals should be impedance controlled with typically 120 Ω for
EIA-485 or RS-482 standard. Traces wide should be > 0.2 mm, the maximum ampacity need to
be taken into account.
• To improve the EMC immunity it may be helpful to connect the two signal channels on two differ-
ent connectors
