Mencom的入门级DIN-RAIL-Mount未管理的以太网开关为大多数简单的网络拓扑提供了可靠，健壮且具有成本效益的解决方案。使用IP30等级，所有未托管的开关均经过工业EMC（EN61000-6-4和EN61000-6-2）的认证，并支持冗余功率输入以增强安全性，可以同时连接到广泛的DC功率来源。如果一个功率输入失败，另一个实时源将充当自动提供功率需求的备份。它们可以在钢和铝制外壳的温度下以-10至70°C的温度以及塑料外壳的0至60°C工作。选定产品支持PROFINET的数据包优先级。在正常使用期间，广播数据包将转发到除源端口以外的所有端口。但是，如果这些数据包的数量超过预设时间段内的阈值，它将丢弃广播或多播数据包。当预设期过期（约800ms）时，它将恢复接收广播或多播数据包，直到再次达到阈值。
Mencom also offers the enhanced versions with Power-over-Ethernet (PoE) and Gigabit Small Form-factor Pluggable (SFP) support to ensure suitability for simple industrial applications. Since PoE versions have power on the network, a qualified electrician is not required for installation and distribution of network connections is more effective and simpler than non-PoE versions. The number of Fast Ethernet or Gigabit Ethernet ports on the switches range from 4 up to 8 and selected models have both single-mode or multi-mode fiber-optic uplink. All the entry-level unmanaged industrial Ethernet switches provide no configuration required plug-play environment.
Filed Under:工业自动化
