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Chapter 1 Overview
1.1 Introduction
The ADAM-6521 series consists of industrial-grade 10/100 Mbps Ether-
net switches with fiber ports that make it possible to expand industrial
networks fast and cost-effectively. In addition to four 10/100 Mbps Ether-
net ports with RJ-45 connector, ADAM-6521 also provide one multi-
mode fiber optic port, while ADAM-6521S provides one single-mode
fiber optic port with a SC-type connector. Using fiber optics, you can pre-
vent noise from interfering with your system and support high-speed (100
Mbps) and long-distance (ADAM-6521: 2km; ADAM-6521/ST: 2km;
ADAM-6521S: 15km) transmissions.
ADAM-6521 modules can accept a input voltage range from +10 to 30
V
to the terminal block. In addition, the operating temperature is from
DC
-10 to 65° C. The above functions make the ADAM-6521 modules more
stable and reliable, so they are especially suitable for industrial environ-
ments that require Ethernet networking, such as: semiconductor factories,
warehouses, industrial conveyer systems and more.
High-Speed Transmission
ADAM-6521 modules have a switch controller that can automatically
sense transmission speeds (10/100 Mbps). The RJ-45 interface can also
be auto-detected, so MDI or MDI-X is automatically selected and a cross-
over cable is not required. All ports have memory buffers that support the
store-and-forward mechanism. This assures that data is properly transmit-
ted.
Flexible Mounting
Due to its versatility and innovative design, ADAM-6521 modules can be
fixed in three ways: DIN rail, panel and piggyback mounting.
Advanced Protection for Power line
The power line of ADAM-6521 modules supports up to 3000 V
protection (EFT), which secure equipment against unregulated voltage
and make systems safer and more reliable.
ADAM-6521 Series User Manual
2
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