Establishing redundant networking between HVAC control system units, these units provide data from PLC’s and other Ethernet devices and send them to a control room.
The offered solution should:
• Support different ring topologies
• Offer redundancy to ensure reliable operation in case of failure
• Offers flexibility to the system in terms of connectivity
• Support Modbus protocol to be compatible for usage with SCADA
• Has a wide operating temperature to operate reliably in industrial environments
After studying the HVAC control system and the network layout, Xceltra provided SEC with an Ethernet solution.
Products were chosen for the following specs:
• Fits the design as it supports 7 10/100 Base TX and 3 RJ-45/SFP combo (10/100Base-TX, 100Base-FX), given one extra port that can be used for Redundancy
• SFP ports support 100M Fiber, which enables expanding the distances for future expansions. In addition, it supports Digital Diagnostic Monitoring (DDM) to monitor long-distance fiber quality
• Supports Modbus TCP/IP
• Operating temperature -25~70°C
• Supports Multiple Super Ring (recovery time <5ms), Rapid Dual Homing, Multiple Ring, and MSTP/RSTP
• Offers Advanced security feature that supports IP Security, Port Security, DHCP Server, IP and MAC Binding, 802.1x network access control
Exceeds IEC 61850-3, IEEE1613 Power Substation Standard requirements
• Offers modular flexibility with 3 exchangeable modular slots for adding up to 24 10/100-TX or 18 100Base-FX
• 4 On-Board Gigabit RJ45/SFP combo ports
• Industrial Modbus TCP protocol eliminating the need for extra hardware
• Supports LLDP and the NMS software for auto topology visualization and efficient group management
• Wide range of operating temperature -40~85oC
