Description
Emerson SE3008 KJ2005X1-MQ2
Technical Specifications
- Number of communication channels: 8 serial ports
- Supported signal types: RS232, RS485
- Isolation: Channel group electrical isolation
- Operating ambient temperature: 0℃ ~ 60℃
- Storage temperature: -40℃ ~ 85℃
- Relative humidity: 5% ~ 95%, non-condensing
- Backplane communication: DeltaV high-speed dedicated bus
- Built-in communication buffer for data caching
Functional Features Each serial channel operates independently for point-to-point or multi-drop bus communication. Electrical isolation blocks common-mode voltage and surge interference from field serial cables. Real-time link status monitoring detects cable breakage and communication timeout and uploads alarm to DCS operator station. Built-in data cache prevents data loss during temporary communication fluctuation. Front panel LED indicators show running status and communication activity for every channel. Hot-swap capability supports online module replacement without rack shutdown.
Application Scenarios Chemical plants, power plants and refining facilities using DeltaV DCS. It connects online gas analyzers, weighing systems, motor drives and third-party controllers to the DCS platform.
Performance Parameters
- Serial data processing maintains low conversion latency for real-time industrial data transmission
- Isolation circuit withstands high common-mode voltage from field wiring
- Communication fault detection achieves fast response for link abnormality
- Onboard memory stably caches real-time data during brief communication interruption
- Backplane bus communication maintains stable data throughput under continuous operation
Material Composition Flame-retardant engineering plastic housing. Internal multi-layer flame-retardant glass fiber epoxy PCB board. Integrated communication processor, isolated transceivers, memory chips and LED status indicators. Gold-plated copper alloy backplane connector. Matching terminal base uses flame-retardant PA plastic with nickel-plated copper terminals.
Structural Features Standard DeltaV rack plug-in card structure for I/O rack slots. Front panel equips module status LED and 8 groups of channel communication LED indicators. Guide rails and mechanical latches on both sides lock the module into rack against vibration. Rear gold-plated connector interfaces with rack backplane bus. Front terminal base accepts field serial communication cables.
Working Principle The module communicates with DeltaV controller via rack backplane bus. External serial devices connect to module terminal base through RS232 or RS485 cables. The onboard processor parses incoming serial protocol data from field devices, converts data format into DeltaV recognized variables and uploads to DCS controller. The processor receives control commands from DCS, packages data into target serial protocol and sends to external devices. The processor continuously monitors communication frame quality and link status, generating fault alarms once communication abnormality appears.
Installation Requirements Insert the module along guide rail into DeltaV I/O rack slot and lock mechanical latch. Use shielded twisted pair cables for field serial wiring. The cable shield connects to cabinet ground at single end only. Separate serial signal cables from high-voltage power cables. Reserve air clearance above and below the module to maintain smooth airflow.
Precautions for Use Cut off external serial device power before wiring. Configure communication parameters including baud rate, parity and address in DCS engineering station before operation. Check cable shield grounding regularly. Do not apply high AC voltage to serial terminals. Record all communication configuration parameters before module replacement. Do not disassemble module housing.
