Mounting and wiring
CU1521-xxxx, CU1561 25Version: 2.5
4.4 UL notice
CAUTION
Application
Beckhoff EtherCAT modules are intended for use with Beckhoff’s UL Listed EtherCAT
System only.
CAUTION
Examination
For cULus examination, the Beckhoff I/O System has only been investigated for risk of fire
and electrical shock (in accordance with UL508 and CSA C22.2 No. 142).
CAUTION
For devices with Ethernet connectors
Not for connection to telecommunication circuits.
Basic principles
UL certification according to UL508. Devices with this kind of certification are marked by this sign:
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