UL notes
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 | Application Beckhoff EtherCAT modules are intended for use with Beckhoff’s UL Listed EtherCAT System only. | |
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| Usage of suitable copper cables In order to comply with UL approval, use copper cables that are designed for operating temperatures >= 90°C. | |
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| External overcurrent protection External overcurrent protection is required for each input exceeding levels of 30Vrms, 42.4Vpeak or 60Vdc. | |
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| Mains separation of input voltages (only EL1702-0020) Input voltages must be separated from mains according to requirements of cl. 6.7.3 61010-1 and 61010-2-201 (secondary circuits). | |
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| Operating with Beckhoff Terminal EL9260 Fuses have to be specified as 250Vac/6.3A/size 20x5.2mm as all of these parameters are critical for safety. | |