Product Short Description
Product Series: Emerson Ovation DCS System I/O Module Series
Product Brief: Standard high-precision analog input module developed for Emerson Ovation distributed control system. It acquires continuous analog process signals from field sensors, completes signal conditioning and digital conversion, and transmits valid data to the DCS main controller for process monitoring, closed-loop regulation and data logging.
Description
- Module Supply Voltage: 24 V DC ±10%
- Operating Temperature: 0 °C ~ +60 °C
- Storage Temperature: -25 °C ~ +70 °C
- Relative Humidity: 5% ~ 95% RH (Non-condensing)
- Input Channel Quantity: 8 isolated analog input channels
- Supported Signal Types: 4~20 mA DC, 0~10 V DC
- AD Conversion Resolution: 16 bit
- Channel Isolation Voltage: 2000 V AC
- Full-channel isolated acquisition of standard industrial analog signals
- Multi-stage hardware filtering to eliminate high-frequency interference and signal jitter
- Built-in automatic calibration function for signal accuracy correction
- Real-time detection of signal over-range, open-circuit and short-circuit faults
- Dedicated bus protocol adaptation for Ovation DCS data transmission
- Independent LED status indicators for power, run and channel faults
- Total Power Consumption: ≤ 7.8 W
- Signal Acquisition Accuracy: ±0.04% FS
- Single Channel Conversion Cycle: ≤ 0.18 ms
- Insulation Resistance: ≥ 140 MΩ
- Vibration Resistance: 10 Hz ~ 150 Hz, 0.7 g
- Shock Resistance: 12 g peak acceleration (10 ms duration)
- MTBF: ≥ 110000 hours
- Main PCB: Low-drift FR-4 flame-retardant multilayer precision circuit board
- Enclosure: High-strength flame-retardant ABS engineering plastic
- Core Components: 16-bit AD conversion chip, high-stability operational amplifiers, isolation optocouplers
- Terminal Blocks: Brass silver-plated contacts with reinforced plastic base
- Internal Accessories: High-precision fixed resistors, surge suppression components
- Standard DCS rack-mounted modular structure, compatible with Ovation system racks
- Front panel integrated channel terminals and status indicator lamps with clear channel number marking
- Rear side equipped with gold-plated dedicated backplane bus connector
- Internal physical partition between analog circuit area and digital circuit area
- Built-in metal shielding layer to suppress electromagnetic interference
- Compact integrated layout for dense rack installation
Field analog signals from temperature, pressure and flow sensors access individual isolated channels. Signals undergo amplification, filtering and impedance matching, then are converted into digital signals via high-precision AD chips. Digital data is encoded and transmitted to the DCS main controller through the backplane bus. The onboard detection circuit monitors signal status in real time and outputs fault alarms once abnormal conditions are detected.
- Ultra-low temperature drift, maintaining stable measurement accuracy during long-term operation
- Complete channel isolation, eliminating crosstalk between different measuring points
- Dual standard signal compatibility, wide adaptability for field sensor devices
- Excellent electromagnetic shielding performance for complex industrial electromagnetic environments
- Native matching with Ovation DCS system, stable communication and zero compatibility errors
Thermal power generation, petrochemical processing, natural gas transmission, pharmaceutical manufacturing, environmental protection engineering, pulp and paper industry
- Insert the module into the designated slot of Ovation DCS rack and fully lock the rear connector
- Use shielded twisted-pair cables for analog signal wiring
- Implement single-point grounding for cable shielding layer at the cabinet grounding bar
- Separate analog signal cables and power cables with spacing ≥ 20 cm
- Keep the cabinet internal temperature stable and avoid drastic temperature changes
- Cut off rack power supply before module disassembly, assembly and wiring operations
- Do not input signals exceeding the rated 4~20 mA and 0~10 V range
- Execute regular hardware calibration according to system maintenance cycle
- Keep terminal area clean to prevent dust and moisture intrusion
- Do not disassemble the sealed shell or replace internal components without authorization
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