UL Requirements

The installation of the EtherCAT Box Modules certified by UL has to meet the following requirements.

Supply voltage

CAUTION

These UL requirements are valid for all supply voltages of all marked EtherCAT Box Modules.

For the compliance of the UL requirements the EtherCAT Box Modules should only be supplied

by a 24 V DC supply voltage, supplied by an isolating source and protected by means of a fuse (in accordance with UL248), rated maximum 4 Amp, or
by a 24 V DC power source, that has to satisfy NEC class 2.
A NEC class 2 power supply shall not be connected in series or parallel with another (class 2) power source

CAUTION
To meet the UL requirements, the EtherCAT Box Modules must not be connected to unlimited power sources

CAUTION
To meet the UL requirements, EtherCAT Box Modules must not be connected to telecommunication networks.

CAUTION
To meet the UL requirements, EtherCAT Box Modules have to be operated only at an ambient temperature range of -25 °C to +55 °C.

All EtherCAT Box Modules certified by UL (Underwriters Laboratories) are marked with the following label.