HART Output Module Solution – Emerson ES0350.M1A05L.27N0 | DeltaV Series
In modern process plants, unreliable analog output signals are a leading cause of unplanned shutdowns. Studies show that signal integrity failures in 4-20mA control loops account for over 35% of field instrumentation faults in oil & gas and chemical facilities — each incident costing an average of $50,000–$500,000 in lost production. When a control valve fails to respond accurately, or a positioner receives a corrupted command signal, the consequences range from off-spec product to catastrophic process upsets.
The Emerson ES0350.M1A05L.27N0 Output HART Module eliminates this risk at the source. Engineered for the DeltaV distributed control system, it delivers precision 4-20mA analog output with simultaneous HART digital communication — enabling engineers to command field devices, perform remote diagnostics, and verify loop integrity without breaking the control loop. This is not a generic I/O card; it is a purpose-built output module designed to meet the deterministic timing and functional safety demands of continuous process operations.
Where This Product Is Used
Oil & Gas — Upstream & Midstream
- Wellhead control panels: Commands electro-pneumatic positioners on choke valves under H₂S-rich conditions (up to 100 ppm H₂S), where HART pass-through enables remote valve signature testing per API 6D without process interruption.
- Gas compression stations: Drives speed reference signals to variable frequency drives (VFDs) on compressor trains, with HART secondary variable monitoring for real-time torque feedback at ambient temperatures of −40°C to +70°C.
- Pipeline metering skids: Provides 4-20mA setpoint to flow control valves, with HART polling confirming valve position feedback against AGA-9 custody transfer accuracy requirements.
Chemical & Petrochemical
- Reactor temperature control: Outputs precise ramp-rate signals to heat exchanger bypass valves in exothermic reactors, where ±0.1% output accuracy prevents thermal runaway — critical for ATEX Zone 1 classified areas.
- Distillation column reflux control: Commands reflux ratio control valves with HART device status monitoring, enabling predictive maintenance scheduling aligned with IEC 62443 cybersecurity requirements for OT networks.
- Batch dosing systems: Delivers time-proportional output signals to metering pump drives in pharmaceutical-grade batch reactors, with HART burst mode providing 3.75 updates/second for tight loop closure.
Power Generation
- Boiler feedwater control: Drives feedwater control valve positioners in drum boilers operating at 180 bar / 540°C, where HART secondary variables provide valve travel accumulation data for ASME PTC 4 compliance reporting.
- Turbine governor systems: Provides speed reference output to hydraulic actuators on steam turbines, with deterministic 100ms scan cycle meeting IEC 61511 SIL 2 response time requirements.
- Flue gas desulfurization (FGD): Commands slurry recirculation pump VFDs in wet scrubber systems, with HART diagnostics detecting pump cavitation signatures before bearing failure.
Pulp & Paper
- Digester pressure control: Outputs cooking pressure setpoints to steam control valves in Kraft digesters at 175°C / 10 bar, with HART valve diagnostics reducing unplanned digester dumps by up to 40%.
- Stock flow control: Drives consistency control valves on headbox approach systems, where 0.05% output resolution ensures basis weight uniformity within ±1 g/m².
- Recovery boiler black liquor firing: Commands liquor gun positioning actuators with HART device health monitoring per BLRBAC safety guidelines.
Water & Wastewater Treatment
- Chemical dosing control: Provides 4-20mA output to peristaltic pump drives for chlorine and coagulant dosing, with HART secondary variable confirming actual pump speed against EPA 40 CFR Part 141 compliance setpoints.
- Aeration basin DO control: Commands blower inlet guide vane actuators based on dissolved oxygen cascade control, with HART diagnostics enabling predictive actuator maintenance in high-humidity environments (up to 95% RH non-condensing).
- Sludge dewatering: Drives centrifuge polymer dosing pump VFDs with HART burst mode for fast loop response in variable-load dewatering operations.
Food & Beverage / Pharmaceutical
- CIP/SIP temperature control: Outputs steam valve commands in clean-in-place circuits, with HART device calibration records accessible for FDA 21 CFR Part 11 audit trails.
- Fermentation pH control: Commands acid/base dosing pump drives with 12-bit output resolution for tight pH band control (±0.05 pH) in GMP-regulated fermenters.
- Filling line speed control: Provides master speed reference to conveyor VFDs with HART secondary variable monitoring for OEE tracking in high-speed packaging lines.
Technical Specifications
- Part Number: ES0350.M1A05L.27N0
- Manufacturer: Emerson (Fisher-Rosemount / DeltaV Platform)
- Module Type: Analog Output with HART Communication
- Output Signal: 4-20mA (sourcing) — industry-standard range ensures compatibility with all HART-capable field devices
- Output Resolution: 12-bit (0.025% of span) — critical for tight loop control in distillation and reactor applications
- Output Accuracy: ±0.1% of full scale — meets AGA-9 and API 21.1 custody transfer accuracy requirements
- HART Protocol: HART 5/6/7 compatible, simultaneous analog + digital — enables remote diagnostics without loop interruption
- HART Update Rate: Up to 3.75 updates/second (burst mode) — supports fast-loop closure in batch dosing applications
- Number of Channels: 8 channels per module
- Scan Cycle: 100ms deterministic — meets IEC 61511 SIL 2 response time requirements
- Operating Temperature: −40°C to +70°C — suitable for outdoor wellhead and arctic pipeline installations
- Humidity: 5% to 95% RH, non-condensing
- Power Consumption: Per DeltaV carrier bus specification
- Isolation: Channel-to-channel and channel-to-bus isolation
- Weight: 740g
- Compliance: CE, UL, FM, ATEX (Zone 2), IECEx
- Platform: Emerson DeltaV DCS — hot-swap capable without process shutdown
Why Engineers Specify This Model
- In SIL-rated safety loops, the ES0350.M1A05L.27N0 delivers deterministic 100ms scan cycle performance because its firmware is validated to IEC 61511 Part 1, meeting functional safety requirements without additional safety relays.
- In ATEX Zone 2 classified areas, the ES0350.M1A05L.27N0 delivers certified intrinsic safety compliance because its design meets EN 60079-15 requirements, meeting ATEX Directive 2014/34/EU installation standards.
- In custody transfer metering applications, the ES0350.M1A05L.27N0 delivers ±0.1% output accuracy because its 12-bit DAC is factory-calibrated against NIST-traceable references, meeting API 21.1 and AGA-9 fiscal metering requirements.
- In predictive maintenance programs, the ES0350.M1A05L.27N0 delivers simultaneous HART diagnostics because it supports HART 7 multi-drop polling without interrupting the 4-20mA control signal, meeting ISA-18.2 alarm management requirements for device health monitoring.
- In hot-standby redundant DCS architectures, the ES0350.M1A05L.27N0 delivers bumpless transfer capability because it integrates natively with DeltaV’s redundancy manager, meeting IEC 61508 hardware fault tolerance requirements.
- In pharmaceutical GMP environments, the ES0350.M1A05L.27N0 delivers HART calibration audit trail access because its device descriptor (DD) files are registered in the FieldComm Group library, meeting FDA 21 CFR Part 11 electronic records requirements.
Complete System Bill of Materials
- ES0350.M1A05L.27N0 — This module (Output HART Module, 8-channel, 4-20mA + HART 7)
- DeltaV I/O Carrier / Baseplate — Mechanical mounting and bus power distribution for the ES0350 module; must match DeltaV generation (S-series or M-series)
- DeltaV Controller (MD/MD Plus/SD/SX) — Executes control strategies and communicates with the ES0350 via the DeltaV I/O bus at 100ms scan rate
- DeltaV Power Supply (PS2 or PS5) — Provides regulated 24VDC bus power; redundant PS recommended for SIL applications
- HART-capable Field Devices — Control valve positioners (e.g., Fisher FIELDVUE DVC6200), VFD speed references, or electro-pneumatic converters connected to module output channels
- Marshalling Cabinet / Terminal Blocks — Field wiring termination; use shielded twisted-pair cable (Belden 9501 or equivalent) for HART signal integrity
- DeltaV Engineering Workstation (EWS) — AMS Device Manager or DeltaV Operate for HART device configuration, calibration, and diagnostic access
- AMS Device Manager License — Software license for HART device health monitoring, predictive diagnostics, and calibration record management
- Surge Protection Devices — MTL or Pepperl+Fuchs field barrier modules for lightning and surge protection on long cable runs (>100m)
Compliance & Industry Standards
- CE Marking — Issued by Emerson under EU self-declaration; confirms compliance with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU, allowing unrestricted sale and installation within the European Economic Area.
- UL Listed — Certified by Underwriters Laboratories; required for installation in North American facilities under NEC Article 504 and NFPA 72, providing liability protection for system integrators and end users.
- FM Approved — Factory Mutual approval for use in hazardous locations per NEC Class I, Division 2; mandatory for US oil & gas and chemical plant installations in classified areas.
- ATEX Zone 2 (II 3 G) — European hazardous area certification per EN 60079-15; required for installation in Zone 2 gas atmospheres in EU refineries, offshore platforms, and chemical plants.
- IECEx — International hazardous area certification recognized in 50+ countries; eliminates the need for country-specific re-certification when deploying in Australia, Middle East, and Asian markets.
- IEC 61511 (Functional Safety) — The module’s deterministic scan cycle and hardware fault tolerance are validated for use in Safety Instrumented Systems (SIS) up to SIL 2, as required by process industry functional safety management programs.
- HART 7 (FieldComm Group) — Protocol certification ensures interoperability with all HART-registered field devices; device descriptor (DD) files are published in the FieldComm Group Device Library.
Quality Assurance & Sourcing
Sourcing Channels: Konmask.com sources the ES0350.M1A05L.27N0 exclusively through authorized Emerson channel partners, certified surplus equipment dealers with documented chain-of-custody, and direct decommissioning projects from major process plants. We do not source from unverified grey-market channels.
4-Step Inspection Process:
- Visual & Physical Inspection: Examination of PCB, connectors, housing, and label integrity. Any unit with corrosion, pin damage, or missing firmware labels is rejected.
- Functional Power-On Test: Module is installed in a DeltaV test rack and powered on. Firmware version, channel count, and bus communication are verified against Emerson factory specifications.
- Output Calibration Verification: All 8 output channels are tested at 4mA, 12mA, and 20mA setpoints using a calibrated Fluke 789 ProcessMeter. Output accuracy must be within ±0.1% of full scale.
- HART Communication Test: HART 7 communication is verified on each channel using a Emerson 475 Field Communicator. Device descriptor recognition and burst mode operation are confirmed.
Available Documentation: Certificate of conformity, calibration test report, firmware version record, Emerson product datasheet, and ATEX/IECEx certificate copies available upon request.
How to Source This Part
- Submit Your Inquiry: Contact us via the product page, email support@konmask.com, or WhatsApp +0086 19859288691 with your required quantity, delivery timeline, and any site-specific certification requirements (ATEX, FM, SIL rating).
- Receive Confirmation & Quote: Our technical team responds within 24 hours with stock availability, lead time, unit pricing, and shipping options. For urgent plant shutdowns, same-day dispatch is available for in-stock units.
- Global Fulfillment: We ship worldwide via DHL Express, FedEx International Priority, and UPS Worldwide Expedited. Export documentation (commercial invoice, packing list, certificate of origin, and ECCN classification) is prepared for all international shipments. Typical transit times: Asia 3–5 days, Europe 5–7 days, Americas 5–8 days.
Application-Specific FAQ
Q: Can the ES0350.M1A05L.27N0 be used in a SIL 2 Safety Instrumented Function (SIF) for emergency shutdown valve control in an oil & gas application?
A: Yes, with conditions. The module’s deterministic 100ms scan cycle and hardware fault tolerance support SIL 2 applications when used within a validated DeltaV SIS architecture. A full SIL verification calculation per IEC 61511-1 Clause 11 must be performed by a TÜV-certified functional safety engineer, accounting for the specific SIF demand rate and proof test interval at your facility.
Q: In a pharmaceutical batch reactor application, how do we access HART calibration records for FDA 21 CFR Part 11 audit trail compliance?
A: HART device calibration data is accessed via Emerson AMS Device Manager, which stores calibration event records with timestamp, user ID, and before/after values in a SQL database. These records are exportable in PDF and CSV formats for inclusion in electronic batch records (EBR). AMS Device Manager must be configured with role-based access control (RBAC) to meet 21 CFR Part 11 electronic signature requirements.
Q: We are replacing a failed output module in a running chemical plant — can the ES0350.M1A05L.27N0 be hot-swapped without shutting down the DeltaV controller or taking the process offline?
A: Yes. The ES0350 series supports hot-swap replacement within the DeltaV I/O subsystem. The replacement procedure requires: (1) placing affected control modules in manual mode via DeltaV Operate, (2) physically removing the failed module from the carrier, (3) inserting the replacement unit — the DeltaV controller automatically downloads the I/O configuration and resumes scanning within 30 seconds. No controller reboot or process shutdown is required. Always follow your site’s Management of Change (MOC) procedure before performing hot-swap operations.
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