Description
Weidmuller IE-SR-2GT-LAN-FN
Technical Specifications
- Product Type: Industrial NAT security router, no VPN
- Ethernet Interfaces: 2 × 10/100/1000BASE-T RJ45 gigabit ports
- Power Supply: 7 V DC to 36 V DC, nominal 24 V DC, max 0.6 A
- Mounting: 35 mm DIN rail mounting
- Ingress Protection: IP20
- Operating Temperature: -20 °C to +70 °C
- Humidity: 5 % to 95 %, non-condensing
- Routing Protocol: IPv4 static routing
- Firewall: Stateful packet inspection layer 3 firewall
- NAT Modes: Source NAT, destination NAT, port forwarding, 1:1 host mapping
- Certifications: UL, CE, RoHS, DNV marine approval
- Weight: 0.78 kg
Functional Features
- Layer 3 routing function transfers data between two separate gigabit Ethernet subnets.
- Stateful packet inspection firewall filters incoming and outgoing network traffic.
- Multiple NAT modes realize network address translation for control network isolation.
- DHCP server and client function automatically assign IP addresses to local devices.
- Port forwarding allows designated external access to internal automation server.
- Web-based configuration interface and SNMP monitoring support remote management.
- Hardware watchdog automatically restarts router after system crash.
- DIN rail compact housing saves cabinet installation space.
- LED indicators display power, link and traffic status for each port.
- EMC robust design withstands high electromagnetic interference in factory environment.
Application Scenarios
- Factory control network isolation between OT and IT network
- Packaging machine secure remote access gateway
- Marine automation network subnet segmentation
- Water treatment plant control network boundary protection
- Material handling equipment network security gateway
Material Composition
- Housing: Metal and flame retardant plastic composite enclosure
- Main PCB: FR4 printed circuit board with conformal coating
- Network processor: Industrial gigabit routing SoC chip
- PHY chips: Industrial Ethernet transceivers
- Terminal blocks: Tin-plated copper screw terminals for DC power
- Connectors: Gold plated RJ45 sockets
Structural Characteristics
- Vertical DIN rail mount rectangular housing.
- Front panel carries two RJ45 ports, LED indicators and power terminal block.
- Internal circuit layout separates WAN and LAN signal paths.
- Passive convection cooling without fan.
- Metal housing provides electromagnetic shielding.
Working Principle After power on, router boots embedded firmware and loads configured firewall and NAT rules. Data packets entering WAN port pass through stateful inspection firewall. Allowed packets undergo NAT address translation and forward to LAN subnet. Return traffic from LAN devices translates source address and transmits to WAN side. Static routing table determines forwarding path for cross-subnet packets. Watchdog circuit monitors system operation state and triggers reboot when firmware hangs.
Installation Requirements
- Mount router on standard 35 mm DIN rail inside control cabinet.
- Use shielded gigabit Ethernet cable for LAN and WAN connections.
- Separate signal wiring from high power motor cables.
- Connect 24 V DC power and protective earth wire.
- Configure firewall rules, NAT mapping and IP address before commissioning.
- Test traffic forwarding and access control function after configuration.
- Verify network isolation effect between two subnets.
Usage Notes
- Do not connect unfiltered public internet directly to LAN side without proper firewall rule configuration.
- Keep cabinet environment dry and free of conductive dust.
- Backup configuration file before firmware update.
- Disconnect DC power before modifying wiring.
- Use anti-static wristband when handling spare unit.
- Replace router immediately when permanent routing or firewall hardware fault occurs.
