KEYENCE DL-EP1 - Manual (Page 4)

2 - EtherNet/IP Compatible Network Unit DL-EP1 User’s Manual (IL) -
Noise Protection
If this product is installed in a location near an electrical noise source, e.g., a power
source or high-voltage line, it may malfunction or fail because of noise. Take
protective measures, such as using a noise filter or running the cables separately.
About the Power Supply
• Noise superimposed on the power supply may result in malfunction. Use a
stabilized DC power supply configured with an isolation transformer.
• When using a commercially available switching regulator, be sure to ground the
frame ground terminal.
„ UL Certification
This product is an UL/C-UL Listed product.
• UL File No. E207185
• Category
NRAQ, NRAQ7
Be sure to consider the following specifications when using this product as an UL/C-
UL Listed Product.
• Use this product under pollution degree 2.
• For wiring to the power supply connector, use a power supply with Class 2 output
defined in NFPA70 (NEC: National Electric Code).
• This product is an open type device. Therefore, it must be installed in an
enclosure with an IP 54 or higher rating. (e.g. Industrial control panel)
„ CE Marking
Keyence Corporation has confirmed that this product complies with the essential
requirements of the applicable EC Directive, based on the following specifications.
Be sure to consider the following specifications when using this product in a member
state of European Union.
z EMC Directive (2004/108/EC)
EMI : EN55011, Class A
EMS : EN61000-6-2
• Use an STP (shielded twisted pair) cable for connection to the network.
These specifications do not give any guarantee that the end-product with this
product incorporated complies with the essential requirements of EMC Directive. The
manufacturer of the end-product is solely responsible for the compliance on the end-
product itself according to EMC Directive.
Precautions on Regulations and Standards