Description
System Role and Integration
The 5X00167G01 serves as the high-performance analog control interface within the Ovation Distributed Control System architecture, functioning as an enhanced version of the standard HART analog output module optimized for applications requiring superior resolution and faster communication cycles. As a High Performance HART Analog Output Electronics Module (EMOD), it mounts in standard Ovation I/O bases and operates with a companion Personality Module to deliver precise current loop signals to field actuators.
This module occupies a specialized position in control applications where tight control loop performance and rapid HART communication are critical—such as turbine control valves, fast-acting pressure control loops, and advanced process control strategies requiring high-resolution output granularity. While functionally similar to the standard 8-channel 5X00062G01, the 5X00167G01 provides enhanced performance characteristics with four high-precision channels, distinguishing it as the “High Performance” variant in the Ovation analog output portfolio.
Core Functionality and Signal Handling
The module provides four independent analog output channels, each capable of sourcing 4-20mA current loops into loads up to 500-700 ohms. A 16-bit digital-to-analog converter provides high-resolution output control with ±0.1% full-scale accuracy, enabling precise valve positioning and fine control adjustments that minimize process variability. The “Fast HART” capability supports accelerated digital communication cycles compared to standard HART modules, enabling more rapid access to device diagnostics and configuration parameters.
The 5X00167G01 implements the HART (Highway Addressable Remote Transducer) protocol by superimposing FSK (Frequency Shift Keying) digital signals onto the 4-20mA analog output, allowing bidirectional communication with smart field devices without disturbing the primary control signal. This enables remote configuration of valve positioners, access to device health diagnostics, and retrieval of secondary process variables from HART-compatible transmitters and actuators.
The module requires pairing with a compatible Personality Module (PMOD) to complete the field interface, with the EMOD handling the D/A conversion, HART modulation, and communication interface while the PMOD provides field termination, individual channel fusing, and surge protection. This modular architecture allows replacement of field-side components without disturbing the calibrated electronics.
Platform Heritage and Operational Benefits
As a component of the Emerson Ovation platform originally developed by Westinghouse, the 5X00167G01 reflects the high-performance analog control capabilities required for mission-critical power generation, petrochemical, and advanced process control applications. The “High Performance” designation indicates enhanced resolution and update characteristics compared to standard analog output modules, supporting demanding control applications where 12-bit resolution proves insufficient.
The robust isolation design (≥500V between channels and power supply) ensures that ground faults or high common-mode voltages in field wiring cannot propagate to the control system electronics. Wide operating temperature range (-40°C to +70°C) accommodates installation in harsh environments without climate control, while low power consumption (≤4W typical) minimizes thermal loading in densely packed I/O cabinets.
5X00167G01
Part 4: Technical Specifications
-
Model Number: 5X00167G01
-
Manufacturer: Westinghouse Electric Corporation (Emerson Ovation product line)
-
Product Type: HART High Performance Analog Output Electronics Module (EMOD)
-
Number of Channels: 4 analog output channels (High Performance variant)
-
Output Signal: 4–20 mA current loop with Fast HART superimposed
-
D/A Resolution: 16-bit (High Performance specification)
-
Accuracy: ±0.1% of full scale (±0.15% per some configurations)
-
Output Loading: ≤500 Ω to ≤700 Ω (depending on supply voltage and cable length)
-
Output Impedance: ≤500 Ω
-
HART Protocol: Fast HART communication (Bell 202 FSK modulation, 1200 baud)
-
Isolation: ≥500 V between channels and power supply
-
Power Supply: 24 VDC ±10%
-
Power Consumption: ≤4 W typical
-
Update Rate: 250 ms (typical)
-
Operating Temperature: -40°C to +70°C (-40°F to +158°F)
-
Storage Temperature: -40°C to +85°C (-40°F to +185°F)
-
Humidity: 5% to 95% RH (non-condensing)
-
Dimensions: 2.25 × 9.9 × 11.45 cm (0.9 in × 3.9 in × 4.5 in) or 12.1 × 5.2 × 16.6 cm per industrial packaging
-
Weight: 0.4 kg to 2.0 kg (0.9 lbs to 4.4 lbs) depending on packaging
-
Mounting: Standard Ovation I/O base or DIN rail compatible
-
Personality Module: Requires compatible PMOD for field termination (specific PMOD part number varies by configuration)
-
Approvals: CE, UL, RoHS compliant
-
Status: Available via Emerson certified spares and secondary market
Part 5: Core Features & Customer Value
16-Bit High-Resolution Output: The 16-bit D/A conversion provides 65,536 discrete output levels across the 4-20mA range, delivering control precision significantly superior to standard 12-bit or 14-bit modules. For process control engineers, this enhanced resolution enables finer control adjustments, reduced process variability, and improved setpoint tracking in tight regulatory loops such as turbine speed control or reactor pressure regulation.
Fast HART Communication: The enhanced HART communication capability supports faster digital data exchange with smart field devices compared to standard HART modules. This enables more rapid retrieval of diagnostic information, valve position feedback, and device health status—reducing the time required for online device verification and allowing more frequent partial stroke testing of safety valves without impacting control performance.
High-Precision Accuracy: The ±0.1% full-scale accuracy ensures that control outputs match calculated values with minimal deviation, supporting custody transfer applications and critical control loops where measurement uncertainty directly impacts product quality or safety margins. This precision reduces the need for manual output trimming and ensures consistent control performance across varying ambient temperatures.
Robust Galvanic Isolation: The 500V+ isolation between output channels and system power prevents ground loop currents and protects controller electronics from field-side transients. In power plant switchyard environments and petrochemical facilities where large ground potential differences exist between control rooms and field equipment, this isolation ensures reliable operation without external signal isolators.
Wide Environmental Operating Range: The -40°C to +70°C temperature rating accommodates installation in outdoor enclosures, remote pump stations, and unheated auxiliary buildings without requiring auxiliary heating or cooling. This ruggedness proves particularly valuable for oil and gas pipeline applications and water treatment facilities where control equipment must operate reliably across extreme climate conditions.
5X00167G01
Part 6: Typical Applications
Precision Turbine Control: The 5X00167G01 is extensively deployed in steam and gas turbine control systems where high-resolution analog output is required for fuel valve positioning, inlet guide vane control, and bleed valve modulation. The 16-bit resolution enables fine adjustments necessary for maintaining tight speed and load control within utility grid frequency regulations, while Fast HART communication provides rapid feedback of actual valve positions for closed-loop control verification.
Advanced Process Control: In petrochemical refineries and chemical processing plants, the module controls advanced regulatory loops such as distillation column reflux, reactor feed rates, and compressor anti-surge valves. The high precision supports model predictive control (MPC) strategies that require accurate valve positioning to maintain optimal operating points and maximize throughput while minimizing energy consumption.
Safety Instrumented Systems (SIS): For safety-critical applications requiring partial valve stroke testing, the Fast HART capability enables rapid verification of valve travel and response times without removing the valve from service. The high-resolution output ensures accurate positioning during testing, while the HART overlay provides detailed diagnostic data required for safety system certification per IEC 61511 standards.
Custody Transfer and Metering: Petroleum pipeline and storage terminal applications utilize the module for control of custody transfer valves and prover loop systems where measurement accuracy directly impacts revenue. The ±0.1% accuracy ensures compliance with American Petroleum Institute (API) uncertainty requirements, while the HART communication enables retrieval of valve signatures and diagnostic data for regulatory audits.
Water Treatment Chemical Dosing: In municipal and industrial water treatment, the module provides precise control of chemical metering pumps and chlorine dosing valves. The 16-bit resolution enables accurate chemical feed rates essential for maintaining water quality standards while minimizing chemical consumption costs, and the wide temperature range accommodates outdoor installation at remote well fields and reservoir sites.
