Description
5X00070G01: Product Overview
The 5X00070G01 functions as a high-speed analog input interface within the Westinghouse Ovation Distributed Control System (DCS), specifically engineered for applications requiring rapid signal acquisition and high-resolution measurement of process variables. In the Ovation I/O architecture, this module occupies a specialized niche distinct from standard analog input modules—its high sampling rate and advanced signal processing capabilities address control loops and monitoring applications where signal dynamics exceed the capabilities of conventional 50/60 Hz input modules.
Positioned within the Ovation I/O subsystem, the module typically resides in local or remote I/O chassis alongside other process I/O modules. Its primary role is the conversion of 4-20 mA current signals from field transmitters—measuring pressure, flow, temperature, level, and analytical parameters—into digital values with 16-bit resolution. Unlike standard analog inputs that may sample at power line frequency (50/60 Hz), the 5X00070G01 achieves sampling rates of 250 Hz to 1000 Hz, capturing rapid process transients and enabling high-performance control algorithms that demand fast feedback.
The module integrates HART (Highway Addressable Remote Transducer) protocol capability, allowing bidirectional digital communication over the same 4-20 mA wiring that carries the primary analog signal. This feature enables remote configuration of smart transmitters, access to secondary process variables, and diagnostic information from field devices without additional wiring. For maintenance engineers, this means transmitter ranging and calibration adjustments can be performed from the control room rather than requiring field visits to each device.
As part of the Ovation platform, the 5X00070G01 benefits from the system’s deterministic I/O scanning and integrated asset management capabilities. The high-speed data feeds directly into Ovation controller algorithms, supporting fast PID loops, turbine control applications, and compressor anti-surge protection where millisecond-level response matters. The module’s isolation architecture—channel-to-channel and channel-to-system—prevents ground loop interactions between field devices and protects the controller from field-side electrical faults.
5X00070G01
5X00070G01: Technical Specifications
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Model Number: 5X00070G01
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Manufacturer: Westinghouse Electric Corporation (legacy product, now Emerson Automation Solutions)
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Product Type: High-Speed Analog Input Module
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System Family: Ovation Expert Control System
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Number of Channels: 4 or 8 analog input channels (configuration dependent)
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Input Signal Type: 4-20 mA DC current loop
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Input Impedance: 250 Ω typical (compatible with HART)
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A/D Resolution: 16-bit
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Sampling Rate: 250 Hz to 1000 Hz (high-speed mode)
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Accuracy: ±0.1% of full scale (typical)
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Signal Bandwidth: DC to 100 Hz (3 dB point)
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HART Protocol: Version 5, 6, 7 compatible; supports multidrop configuration
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Isolation: Channel-to-channel isolation, channel-to-bus isolation (1500 VAC minimum)
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Common Mode Rejection: >80 dB at 50/60 Hz
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Normal Mode Rejection: >60 dB at 50/60 Hz
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Digital Filtering: Configurable first-order or averaging filters per channel
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Alarm Functions: High/high-high, low/low-low limits with deadband configurable
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Diagnostic Features: Open circuit detection, overrange/underrange indication, HART status monitoring
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Power Requirements: 24 VDC (system power)
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Power Consumption: <5 W typical
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Operating Temperature: -40°C to +70°C (-40°F to +158°F)
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Storage Temperature: -40°C to +85°C (-40°F to +185°F)
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Relative Humidity: 5% to 95%, non-condensing
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Enclosure Rating: IP20 (control cabinet installation)
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Mounting: Plugs into standard Ovation I/O carrier/backplane
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Field Terminations: Screw terminals or spring clamp (carrier dependent)
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Dimensions: 134 × 173 × 40 mm (5.3 × 6.8 × 1.6 in) approximate
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Weight: 0.3 kg to 1.2 kg (varies by packaging)
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Certifications: CE, UL, CSA (typical for Ovation I/O modules)
Core Features & Customer Value
High-Speed Sampling for Dynamic Process Control: The 250-1000 Hz sampling rate fundamentally distinguishes this module from standard analog inputs, enabling capture of rapid process changes that would alias or miss entirely at conventional sampling rates. In turbine speed control, compressor anti-surge protection, and fast-acting pressure control loops, this speed provides the temporal resolution necessary for stable, high-performance control. For process engineers, this translates to tighter control variance, reduced safety margins, and improved product quality in dynamic processes.
16-Bit Resolution for Precise Measurement: The 16-bit analog-to-digital converter provides 65,536 discrete counts across the 4-20 mA range, yielding approximately 0.25 µA resolution. This precision supports applications requiring fine measurement discrimination—chemical dosing ratios, combustion air flow measurement, and custody transfer metering. The high resolution also improves the signal-to-noise ratio for low-level signals, allowing longer cable runs without loss of measurement fidelity.
Integrated HART Communication for Asset Management: The embedded HART modem eliminates separate handheld communicators and dedicated HART multiplexers. From the Ovation Workstation, engineers can access transmitter diagnostics, verify loop integrity, and re-range instruments without field visits. This capability reduces maintenance labor costs and enables predictive maintenance strategies—primary variable trends, secondary variable monitoring, and device health status feed directly into the Ovation asset management system.
Robust Isolation for Signal Integrity: Channel-to-channel isolation prevents ground loop currents between transmitters located in different plant areas or grounded through different structural elements. This isolation eliminates the measurement errors and controller instability that plague single-ended input systems in large industrial facilities. The channel-to-system isolation provides a final protective barrier, ensuring that field-side faults—lightning strikes, welding equipment coupling, or cable shorts—do not propagate to the controller backplane.
Advanced Digital Filtering and Diagnostics: Configurable digital filters allow engineers to balance noise rejection against response time on a per-channel basis. Slow-varying temperature measurements can use heavy filtering for noise-free displays, while fast pressure loops can minimize filtering for responsive control. Open-circuit detection immediately identifies broken field wiring or failed transmitters, while overrange detection indicates process excursions beyond transmitter span—both conditions generating alarms that prevent erroneous control action based on invalid data.
5X00070G01
Typical Applications
Gas Turbine Control and Protection: In combined-cycle power plants utilizing Ovation DCS for turbine control, the 5X00070G01 acquires critical dynamic parameters including compressor inlet pressure, combustion chamber pressure, and turbine exhaust temperature. The high sampling rate captures pressure pulsations and thermal transients during startup and load changes, feeding anti-surge controllers and thermal stress monitors that protect rotating equipment from damage. HART communication enables verification of pressure transmitter health during turbine run-up without accessing hazardous areas.
Compressor Anti-Surge Protection: Centrifugal and axial compressors in petrochemical facilities require millisecond-response surge detection to prevent catastrophic damage. The module’s fast sampling captures the rapid pressure fluctuations that precede surge conditions, allowing protective algorithms to open recycle valves before destructive flow reversal occurs. The 16-bit resolution distinguishes small pressure differentials across compressor stages, improving surge margin calculations and allowing operation closer to optimal efficiency points.
High-Speed Process Control Loops: Chemical reactors and distillation columns with fast dynamics utilize this module for cascade control loops where inner loop response must track setpoint changes rapidly. Flow control loops feeding batch reactors, pressure control on flash drums, and level control on surge vessels all benefit from the reduced dead time and improved resolution. The digital filtering allows aggressive tuning of control loops without measurement noise amplification.
Smart Transmitter Networks: Facilities deploying HART-enabled pressure, temperature, and flow transmitters leverage the 5X00070G01 for consolidated analog and digital data acquisition. In pharmaceutical manufacturing, secondary variables such as transmitter temperature (indicating process compatibility) and diagnostic status (indicating impending failure) feed into batch records and maintenance schedules. The multidrop HART capability supports up to 16 devices on a single 4-20 mA loop for low-priority monitoring points.
Steam Turbine Governor Control: Power generation facilities employ this module for electro-hydraulic governor systems where speed and load control demands sub-100 millisecond response. The high-speed acquisition of speed probe signals and valve position feedback enables digital governor algorithms to maintain grid frequency stability during load transients. The isolation prevents ground currents between the turbine deck (high vibration, multiple ground points) and the control room electronics.
