Product Core Brief

• Model: 5X00106G02
• Brand: EMERSON (Ovation / Westinghouse)
• Series: Ovation DCS
• Core Function: 8-channel analog input electronic module (AI EMOD) with HART protocol support that acquires standard 4-20mA and 0-10V signals from field transmitters—such as pressure, temperature, level, and flow transmitters—and converts them into digital data for the Ovation controller, while enabling bidirectional HART communication for device diagnostics and configuration.
• Product Type: HART Analog Input Electronic Module (AI EMOD)
• Key Specs: 8 Channels | HART Protocol | 4-20mA / 0-10V Input | ±0.1% FS Accuracy
• Condition: New Original / New Surplus

Key Technical Specifications

• Input Signal Range: 4-20mA DC, 0-10V DC (configurable per channel)
• Number of Channels: 8 independent, mutually isolated analog input channels
• HART Protocol Support: HART (Highway Addressable Remote Transducer) protocol overlay on 4-20mA signals for bidirectional digital communication
• Resolution: 16-bit A/D converter
• Accuracy: ±0.1% of full scale (FS)
• Sampling Rate: Up to 100Hz per channel
• Common-Mode Rejection Ratio (CMRR): ≥100dB
• Supply Voltage: 24V DC ±10%
• Power Consumption: ≤5W
• Operating Temperature: 0°C to +60°C
• Storage Temperature: -40°C to +85°C
• Humidity: 5% to 95% RH, non-condensing
• Protection Rating: IP20
• Certifications: UL, CSA, ATEX
• Compatibility: Ovation DCS 3.5 and higher; direct replacement for legacy Westinghouse Ovation racks

Product Introduction

The 5X00106G02 is an 8-channel HART analog input electronic module (AI EMOD) for the Emerson Ovation DCS. It serves as the critical interface between field analog transmitters and the Ovation controller, acquiring standard 4-20mA and 0-10V signals from pressure transmitters, temperature transmitters, level sensors, flow meters, and other process instrumentation across power plants, petrochemical facilities, and water treatment operations. The module converts these analog signals into high-resolution digital data that the controller uses for process control, alarm annunciation, and data logging.

What sets the 5X00106G02 apart from standard analog input modules is its integrated HART protocol support. HART communication overlays a bidirectional digital signal on top of the standard 4-20mA analog signal, enabling the Ovation controller to read additional device information—such as transmitter diagnostics, calibration data, device status, and configuration parameters—without requiring a separate communication network. This means maintenance technicians can remotely diagnose a smart transmitter’s health, adjust its range, or retrieve device tags directly from the Ovation engineer station, eliminating the need for a handheld HART communicator at the field device.

The 5X00106G02 is part of Ovation’s EMOD/PMOD architecture. The EMOD (this module) plugs into the Ovation backplane and contains the 16-bit A/D converter, HART communication logic, signal conditioning, and isolation circuitry. It mates with a compatible Personality Module (PMOD) that provides the field terminal block and channel isolation. The 16-bit resolution and ±0.1% FS accuracy ensure that even small process deviations are captured precisely, while the ≥100dB CMRR rejects common-mode noise from nearby VFDs and large motor starters that commonly plague analog signal wiring in industrial environments.

QA & Testing SOP

HART-capable AI modules require more thorough testing than standard analog cards. Here’s our verification procedure:

1. Visual & Anti-Counterfeit Inspection: We inspect the PCB for cold solder joints around the input conditioning amplifiers and HART communication ICs, verify the OEM holographic label, and cross-check the silkscreen part number against the Ovation master parts list. Counterfeit HART modules in the surplus market often have degraded HART modems that fail to communicate with smart field devices.
2. Backplane & Connector Verification: The module is seated into a dedicated Ovation test rack. We inspect the backplane connector pins for bends or corrosion—bent pins on the I/O bus side kill communication with the controller; bent pins on channel inputs kill individual analog channels.
3. Full-Scale 4-20mA Sweep Test: Using a calibrated Fluke 754 or similar process calibrator, we inject precision 4-20mA signals into all eight channels and verify the 16-bit A/D conversion accuracy across the full range. We test at 4mA, 8mA, 12mA, 16mA, and 20mA to confirm linearity and verify channel-to-channel crosstalk is within spec.
4. HART Communication Validation: We connect a HART-compatible field device (or HART simulator) to each channel and verify bidirectional HART communication. We read the device tag, range, and diagnostic status from the Ovation engineer station to confirm the HART modem is functioning correctly. A module that passes analog accuracy tests but fails HART communication is rejected.
5. 0-10V Input Verification: For channels configured for 0-10V input, we inject precision voltage signals (0V, 2.5V, 5V, 7.5V, 10V) and verify accurate conversion. We also verify that the module correctly distinguishes between 4-20mA and 0-10V channel configurations as set in the Ovation engineer station.
6. Open-Circuit & Short-Circuit Diagnostic Check: We intentionally disconnect and short each input channel and verify the module’s internal diagnostic circuit correctly flags the fault condition. This is critical for process safety—an open 4-20mA loop must be detected immediately, not mistaken for a zero reading.
7. Anti-Static Packaging: Passed units are sealed in static-shielded bags with desiccant, then double-boxed for transit.

Installation Pitfalls & Guide

HART analog modules introduce additional wiring considerations that standard AI cards don’t have. Here’s what to watch for:

• ❗ HART Loop Resistance Requirement: HART communication requires a minimum loop resistance of 250Ω to develop sufficient voltage for the HART signal. If the loop resistance is too low (e.g., a 4-20mA loop with only the module’s input impedance), HART communication will fail even though the analog signal reads correctly. Verify the total loop resistance—including the transmitter, wiring, and any barriers—meets the 250Ω minimum. If it doesn’t, add a HART communication resistor in series.
• ❗ HART Communication Interference from Power Supplies: Switching power supplies and VFDs can inject high-frequency noise into the 4-20mA loop that interferes with HART communication. If HART communication is intermittent or fails, check for noise on the loop with an oscilloscope. Adding a loop filter or rerouting the signal cable away from VFD output cables often resolves the issue.
• ❗ Shield Grounding on Analog Signal Circuits: Analog signal cables are susceptible to noise pickup. If the cable shield is grounded at both the field device and the DCS cabinet, you create a ground loop that injects 50/60Hz hum into the reading. Ground the shield at the DCS cabinet end only. If noise persists, verify the analog signal cable is not running parallel to VFD output cables or large motor power cables.
• ❗ PMOD Mismatch: The 5X00106G02 is the EMOD only—it requires a compatible analog input PMOD to provide the field terminal block and channel isolation. Using an incompatible PMOD (e.g., a thermocouple PMOD or digital input PMOD) will result in incorrect channel mapping and potential damage to the module or field devices. Verify the correct PMOD pairing in your Ovation system documentation before installation.
• ❗ Channel Configuration in Ovation Engineer Station: Each channel on the 5X00106G02 must be correctly configured in the Ovation engineer station for the appropriate input type (4-20mA or 0-10V), engineering units, range, and HART device parameters. Incorrect configuration—such as setting a 4-20mA channel to 0-10V mode—will result in wildly inaccurate readings. Always verify the channel configuration matches the field device specification before commissioning.

4-Step Replacement Guide:

1. Pre-Install: Place any control loops using this module’s channels in Manual mode or bypass as per procedure. Backup the current Ovation controller configuration. Verify the replacement module’s firmware revision matches the system requirements.
2. Removal: Carefully disengage the locking lever and pull the faulty EMOD straight out of the rack. Do not twist or rock the card. Note the PMOD position—you may need to replace the PMOD separately if it’s also faulty.
3. Install: Align the new module with the rack guides and slide it in firmly until the backplane connector seats fully. Engage the locking lever. Verify the PMOD is correctly mated and field wiring is secure on the terminal block, observing correct polarity (+/-) for each channel.
4. Power-on Test: Monitor the Ovation diagnostic screen. Verify the module comes online without faults and all channel LEDs indicate normal status. Perform a live signal check: compare the module’s reading against a known reference (e.g., a handheld process calibrator injecting a known 4-20mA signal). Verify HART communication is active by reading the device tag and diagnostic status from the Ovation engineer station for each HART-enabled channel.

Technical FAQ

Q: What’s the difference between 5X00106G01 and 5X00106G02? A: These are both HART analog input EMODs in the Ovation family. The 5X00106G01 is documented as a high-speed HART AI module with 14-bit resolution, while the 5X00106G02 is the 16-bit variant with enhanced accuracy (±0.1% FS) and up to 100Hz sampling rate per channel. The G02 is the higher-resolution, higher-accuracy variant suitable for critical process measurements where precision matters. Both support HART communication, but the G02’s 16-bit resolution provides finer measurement granularity.

Q: Can I use this module for thermocouple or RTD inputs? A: No. The 5X00106G02 is designed for standard analog signals (4-20mA, 0-10V) with HART overlay. Thermocouple inputs require a dedicated thermocouple AI module such as the 5X00070G04, and RTD (Pt100) inputs require a dedicated RTD module such as the 1C31161G02. Thermocouple and RTD measurements use different signal conditioning and excitation principles that the 5X00106G02’s input circuitry does not support.

Q: Why is HART communication failing on one channel even though the 4-20mA reading is correct? A: HART communication failures with correct analog readings are typically caused by one of three things: (1) insufficient loop resistance (below 250Ω), (2) excessive noise on the loop from nearby VFDs or switching power supplies, or (3) a faulty HART modem on the module channel. First, verify the loop resistance meets the 250Ω minimum. If it does, check for noise on the loop with an oscilloscope. If the loop is clean and resistance is adequate, the HART modem on that channel may be faulty and the module needs replacement.

Q: How many HART devices can I connect to this module? A: The 5X00106G02 supports one HART device per channel in point-to-point mode (the standard configuration). Each of the 8 channels can communicate with one HART-enabled field device simultaneously. HART multidrop mode (multiple devices on a single loop) is theoretically supported by the HART protocol but is rarely used in Ovation DCS applications due to the slower update rate and configuration complexity.

Q: Is this module compatible with Ovation 4.0? A: The 5X00106G02 was originally designed for Ovation 3.5 and legacy Westinghouse Ovation systems. It remains supported on Ovation 4.0 and later versions as a legacy-compatible HART AI module. For brownfield upgrades and replacements, it is a direct drop-in replacement. If you’re unsure, verify compatibility with your specific Ovation version in the system documentation.

Q: What is the warranty on surplus units? A: We provide a 12-month warranty from the date of delivery on both new original and new surplus stock. This covers manufacturing defects, DOA failures, and any A/D converter drift or HART communication failures discovered during commissioning. It does not cover damage from improper installation—such as bent backplane pins, incorrect PMOD pairing, ground loop damage from improper shielding, overvoltage from incorrect input type configuration, or ESD damage from handling without proper grounding.

Want me to pull up the compatible PMOD part number for this HART AI module? The correct pairing is essential for installation.