5 European Directives and Standards
Installation manual for PMC tendo DD5/PMCprimo Drive3 Page 9
Conformance with UL and cUL
This servo amplifier is listed under UL file number E306065.
UL (cUL)-certified servo amplifiers (Underwriters Laboratories Inc.) fulfil the relevant U.S. and
Canadian standard (in this case UL 840 and UL 508C).
This standard describes the fulfilment by design of minimum requirements for electrically
operated power conversion equipment, such as frequency converters and servo amplifiers,
which is intended to eliminate the risk of fire, electric shock, or injury to persons, being caused
by such equipment. The technical conformance with the U.S. and Canadian standard is
determined by an independent UL (cUL) inspector through the type testing and regular
checkups.
Apart from the notes on installation and safety in the documentation, the customer does not
have to observe any other points in direct connection with the UL (cUL)-certification of the
equipment.
UL 508C
UL 508C describes the fulfilment by design of minimum requirements for electrically operated
power conversion equipment, such as frequency converters and servo amplifiers, which is
intended to eliminate the risk of fire being caused by such equipment.
UL 840
UL 840 describes the fulfilment by design of air and insulation creepage spacings for electrical
equipment and printed circuit boards.
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