EMERSON 1X00188H0 (1X00188H01) Product Description

I. Product Overview

The Emerson 1X00188H0 (complete model 1X00188H01) is an 8-channel HART high-performance analog output module (AO module) of the Emerson Ovation DCS system. It belongs to the Ovation 1X series I/O cards and was originally part of the Westinghouse P-mod series. It is specifically designed for industrial process control to convert DCS digital signals into standard analog signals of 4-20mA/0-10V, driving on-site actuators such as control valves, frequency inverters, and positioners. It also natively supports the HART protocol, enabling two-way communication and remote management of intelligent devices. 

This module is the core unit of the Ovation system's analog control. It is widely applied in key process industries such as power, chemical, oil and gas, metallurgy, and water treatment, ensuring precise closed-loop control of process variables such as temperature, pressure, flow, and liquid level, and supporting the continuous and stable operation of the system 24 hours a day.

II. Core Functions

8-channel high-precision analog output, flexible signal configuration

It provides 8 completely independent and isolated analog output channels, each of which can be configured by software as 4–20mA DC (default) or 0–10V DC signals, suitable for various on-site actuators; the output accuracy is up to ±0.15%, with a resolution of 0.001%, an update rate of 250ms, meeting the requirements of high-precision process control.

Native HART protocol support, full interaction of intelligent devices

Each channel integrates the HART 7.0 protocol, superimposing digital communication on the 4–20mA analog signal, achieving two-way data interaction with HART intelligent valve positioners and transmitters; it supports remote parameter configuration, range calibration, fault diagnosis, equipment status monitoring, and variable reading, simplifying intelligent device management and reducing on-site maintenance costs.

Dual isolation between channels and the system, strong anti-interference ability

It adopts channel-to-channel and channel-to-system dual electrical isolation, with an isolation strength of 1500V AC/1min, effectively blocking common-mode and differential-mode interference in industrial sites; it integrates surge suppression, ESD protection, and EMI filtering, complying with EN 61000-6-1/2/3/4 standards, and tolerating strong electromagnetic environments, voltage fluctuations, and static shocks.

Wide temperature reinforcement design, stable operation under harsh conditions

It uses industrial-grade components and reinforced PCB boards, with the circuit board coated with three-layer anti-moisture, anti-salt fog, and anti-corrosion coatings; the operating temperature range is -40°C to +85°C, the storage temperature range is -55°C to +90°C, the relative humidity is 0%–95% (non-condensing); it can withstand vibration (5g rms, 10–500Hz) and impact (30g, 11ms), with an average failure-free time (MTBF) of ≥500,000 hours, suitable for harsh industrial environments such as high temperature, humidity, and dust.

Complete diagnosis and status monitoring, rapid fault location

The panel integrates four sets of LED indicators for power, operation, fault, and HART communication, intuitively displaying the status of the module and channels; it supports remote diagnosis of the Ovation system, capable of uploading output voltage/current, channel status, HART communication quality, fault codes (such as open circuit, short circuit, overcurrent), etc., quickly locating abnormal channels or equipment faults.

Plug-and-play, system compatibility and redundancy support

It is compatible with Ovation standard I/O racks, DIN rail installation, and shares the backplane bus with the controller and power supply; it is compatible with Ovation's full series of controllers (OCR3000, OCC100, etc.), I/O modules, and backplanes, plug-and-play, the system automatically identifies and configures, no complex programming required; it supports redundant rack configuration, module faults can be replaced online without affecting system operation.

Multiple electrical protection, ensuring equipment safety

It has built-in overvoltage, undervoltage, overcurrent, short circuit, and overheat protection circuits, a single channel failure does not affect other channels; when the output is short-circuited, it automatically limits the current and locks it, and recovers after the fault is resolved; HART communication overload protection to prevent signal damage, protecting the end actuators and the module itself from safety hazards.

III. Technical Specifications

(1) Output Parameters

Number of channels: 8 independent isolated channels

Output signals: 4–20mA DC (default), 0–10V DC (software configurable)

Output accuracy: ±0.15% (full scale, 25°C)

Resolution: 0.001% Update rate: 250ms

Load capacity: Maximum 750Ω at 4–20mA; Minimum 1kΩ at 0–10V

Isolation strength: Channel-to-channel 1500V AC, Channel-to-system 1500V AC

Ripple noise: ≤ 50mV peak-to-peak

(II) Communication parameters

Protocol support: HART 7.0, Ovation proprietary protocol

Communication rate: HART 1200bps

Connected devices: HART intelligent valve positioner, transmitter, actuator, etc.

Functions: Remote configuration, calibration, diagnosis, data reading

(III) Electrical parameters

Power supply voltage: 24V DC (±10%), powered by Ovation backplane

Working current: ≤ 0.6A (full load)

Power consumption: ≤ 14.4W

Protection features: Overvoltage, undervoltage, overcurrent, short circuit, overheat automatic protection and alarm

(IV) Environmental parameters

Operating temperature: -40℃ to + 85℃ (full load without reduction)

Storage temperature: -55℃ to + 90℃

Relative humidity: 0%–95% RH (non-condensing)

Anti-vibration: 5g rms, 10Hz–500Hz

Anti-shock: 30g, 11ms half-sine wave

EMC performance: Compliant with EN 61000-6-1/2/3/4

Protection level: IP20 (module body)

(V) Physical parameters

Size: 121mm×25mm×70mm (length × width × height)

Weight: Approximately 0.35kg

Material: Industrial-grade metal casing, PCB board triple protection coating

Certifications: CE, UL 508, RoHS, CSA

Origin: USA

Four, Product features

8-channel independent isolation, high-precision control

8 channels completely independent, each channel can be independently configured with signal type, isolation design avoids interference between channels; Ultra-high precision and resolution ensure precise action of the actuator, meeting high requirements scenarios such as fine chemical and power plant control.

HART protocol integration, intelligent equipment efficient management

Native support for HART protocol, analog signal and digital communication in parallel, no additional hardware required for accessing intelligent equipment; Remote configuration, diagnosis and calibration functions, significantly reduce on-site inspection and maintenance workload, improve equipment management efficiency.

Wide temperature hardening + strong anti-interference, suitable for harsh working conditions

Extremely wide working temperature range, triple protection coating protection, strong anti-vibration and shock resistance, multiple EMC protection, able to withstand industrial site high temperature, humidity, dust, strong electromagnetic interference and other harsh environments, long-term operation stable and reliable.

Complete diagnosis + online maintenance, reduce operation and maintenance costs

LED status indication + system remote diagnosis, quickly locate channel faults, communication abnormalities or equipment problems; Support online hot-swappable replacement, no system shutdown required, single-channel fault does not affect the operation of the entire machine, reducing downtime losses.

Plug-and-play + full system compatibility, deployment is convenient

Standard rack installation, plug-and-play, system automatically identifies and configures; Compatible with Ovation full series of control and I/O devices, supports redundant architecture, simplifies system expansion and renovation processes.

V, Application scope

Power industry: Thermal power, hydropower, nuclear power Ovation DCS system, used for regulating valves, feeders, frequency converters control of key equipment such as boilers, steam turbines, generators, etc., achieving precise regulation of temperature, pressure, and flow.

Chemical industry: Petrochemical, fine chemical, coal chemical plants, control of equipment such as reaction vessels, distillation towers, heat exchangers, etc., suitable for explosion-proof, strong interference environments, ensuring continuous production and process safety. Oil and Gas Industry: Oil and gas extraction, transportation, refining facilities, control of equipment such as pipeline valves, compressors, heating furnaces, etc., capable of withstanding extreme temperatures, humidity, and harsh environments, achieving stable control of process variables.

Metallurgical Industry: Automation systems for steel and non-ferrous metal smelting, control of actuators for heating furnaces, rolling mills, cooling systems, etc., capable of withstanding high temperatures, dust, and strong electromagnetic interference conditions.

Other Industrial Scenarios: Ovation DCS systems for large-scale water treatment, papermaking, cement, etc., used to control valves, pump bodies, frequency converters, etc., for achieving automation and precise control of production processes.

VI. Installation and Maintenance

(1) Installation Requirements

Installation Location: Fixed on the DIN rail of the Ovation standard I/O rack, installed firmly and vibration-proof; reserve ≥50mm above and below the module and ≥30mm left and right for heat dissipation space to ensure good ventilation and avoid overheating.

Environmental Requirements: Temperature -40℃ to +85℃, humidity 0%–95% (non-condensing); away from strong heat sources, strong electromagnetic sources (such as frequency converters, high-power motors), and avoid direct sunlight and dust accumulation.

Cabling Specifications: Use shielded twisted-pair cables for analog output lines, with single-ended grounding of the shielding layer; HART equipment wiring distinguishes positive and negative poles, ensure firm connection without loosening; 24V DC power supply is provided by the backplane, ensuring stable and undisturbed power supply.

(2) Maintenance Tips

Regular Inspection: Monthly inspection of module appearance, LED status indicator lights, and connection terminals to confirm normal output signals and HART communication; Check DCS system diagnostic logs to identify potential channel abnormalities and communication interruptions.

Cleaning Maintenance: Quarterly cleaning of module surface, ventilation ports, and connection terminals with a dry soft cloth, remove dust and oil stains to avoid poor contact or poor heat dissipation; Check connection terminals, tighten loose cables.

Fault Troubleshooting: Output abnormality, first check wiring and load conditions, then check LED fault lights of the module; Single-channel failure, isolate the channel and replace the equipment; Module failure, perform online hot-swappable replacement operation.

Replacement Considerations: Support online hot-swappable replacement, no need to stop the machine; After replacement, check the output accuracy of each channel, HART communication status, and remote diagnostic functions, confirm normal operation before putting into use.

VII. Order Information

Product Model: 1X00188H0 (Full model 1X00188H01)

Brand: Emerson (Emerson)

Series: Ovation DCS System 1X Series (Original Westinghouse P-mod) 8-channel HART Analog Output Module

Packaging: Original anti-static packaging, including manual, certificate of conformity, and installation accessories

Guarantee: 12-month original factory warranty, provide global technical support and after-sales maintenance