EMERSON 1X00238H01 Product Description

I. Product Overview

The Emerson 1X00238H01 is a 16-channel digital input module (DI module) of the Emerson Ovation DCS system, belonging to the Ovation 1X series I/O card. It was originally part of the Westinghouse P-mod product line and is used to convert on-site switch quantity signals (such as relay contacts, limit switches, pump/fan operating status, valve opening/closing feedback, etc.) into digital signals recognizable by the DCS system, enabling real-time collection and monitoring of the status of industrial field equipment.

This module is specifically designed for high-reliability process industries, featuring high-density channel integration, strong electrical isolation, wide temperature operation, and comprehensive diagnostic capabilities. It is widely used in key fields such as power, chemical, oil and gas, metallurgy, and water treatment, supporting the 7×24-hour continuous stable operation of the Ovation DCS system and ensuring safe and controllable production processes.

II. Core Functions

16-channel high-density digital input, wide signal compatibility

Equipped with 16 completely independent isolated digital input channels, each channel can collect **dry contacts (passive) or wet contacts (24V DC active)** signals, compatible with NPN/PNP type sensors, relay outputs, switch status feedback, etc. of various on-site switch quantity devices; the input status responds quickly, can accurately capture transient signals such as equipment start/stop, valve opening/closing, etc., meeting the requirements for high-frequency status monitoring.

Multiple electrical isolation, extreme anti-interference capability

Adopts channel-to-channel and channel-to-system dual electrical isolation design, with isolation strength reaching 1500V AC/1min, effectively blocking common-mode interference, differential-mode interference, and ground potential difference in industrial fields; integrates surge suppression, ESD protection, and EMI filtering circuits, compliant with EN 61000-6-1/2/3/4 standards, capable of withstanding interference from strong electromagnetic sources such as frequency converters and large-power motors, suitable for harsh industrial electromagnetic environments.

Wide temperature reinforced design, stable operation under harsh conditions

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

Complete diagnosis and status monitoring, rapid fault location

The panel integrates multiple sets of LED indicators for power, operation, fault, and channel status, intuitively displaying module power supply, operation status, fault alarms, and input status of each channel; supports remote diagnosis of the Ovation system, capable of uploading codes and status information for channel open/closed, input abnormalities, module hardware faults, etc., quickly locating faulty channels or equipment issues, reducing troubleshooting time and lowering maintenance difficulty.

Plug-and-play, system compatibility and online maintenance

Compatible with Ovation standard I/O racks, installed using DIN rail, sharing the backplane bus with the controller and power supply; compatible with Ovation's full series of controllers (OCR3000, OCC100, OCR1100, etc.), I/O modules, and backplanes, plug-and-play, system automatically identifies and configures, no complex programming required; supports online hot-swappable replacement, no system shutdown required, a single-channel failure does not affect the operation of other channels, effectively reducing downtime losses.

Multiple electrical protection, ensuring equipment safety Built-in overvoltage, undervoltage, overcurrent, and reverse polarity protection circuits, single-channel faults are automatically isolated without affecting the overall operation; automatic current limiting protection when input overvoltage / overcurrent occurs to prevent damage to the module and downstream devices; reverse polarity protection design to avoid the risk of equipment burnout caused by incorrect positive and negative polarity connections during on-site wiring, enhancing system safety.

III. Technical Specifications

(1) Input Parameters

Number of channels: 16 independent isolated channels

Input signal types: dry contacts (passive), wet contacts (24V DC active)

Input voltage range: dry contacts: 0–5V DC (low level), 15–30V DC (high level); wet contacts: 24V DC (±10%)

Input current: ≤ 10mA per channel in wet contact mode

Response time: ≤ 10ms (channel state flip)

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

Input impedance: ≥ 10kΩ (high level)

(2) Communication Parameters

Bus protocol: Ovation private I/O bus protocol

Communication rate: Synchronized with the backplane bus, compatible with real-time data interaction of the Ovation system

Data transmission: Upload 16-channel input status, diagnostic information, and fault codes

System compatibility: Ovation 3.0 and above versions of the system

(3) Electrical Parameters

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

Working current: ≤ 0.5A (full load)

Power consumption: ≤ 12W

Protection features: Overvoltage, undervoltage, overcurrent, reverse polarity automatic protection and alarm

(4) Environmental Parameters

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

Storage temperature: -55°C to + 90°C

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)

(5) Physical Parameters

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

Weight: Approximately 0.32kg

Material: Industrial-grade metal enclosure, PCB board three-proof coating

Certifications: CE, UL 508, RoHS, CSA

Origin: USA

IV. Product Features

16-channel high-density integration, efficient status acquisition

16 independent channel design, single card can achieve multi-point status monitoring, significantly saving cabinet space and hardware costs; compatible with dry / wet contact signals, suitable for various on-site switch quantity devices, flexible application, meeting large-scale status acquisition requirements.

Double isolation + strong anti-interference, stable and reliable signals

Double isolation between channels and system, effectively eliminating interference signal crosstalk; multiple EMC protection design, tolerant to strong industrial electromagnetic interference, ensuring accurate and stable input signals, avoiding false alarms, missed alarms, etc., reducing abnormal situations.

Wide temperature hardening + three-proof design, suitable for harsh conditions

Extremely wide operating temperature range, stable operation in extremely cold and hot environments; three-proof coating protection, resisting moisture, salt fog, dust erosion, long-term operation reliability high, reducing failure risks in harsh environments.

LED indication + remote diagnosis, convenient and efficient operation and maintenance

Intuitive LED status indication, on-site quick judgment of module and channel status; remote diagnosis function, system background real-time monitoring of equipment health status, precise positioning of fault codes, reducing technical threshold for operation and maintenance, shortening fault handling time.

Plug-and-play + hot-swappable, trouble-free deployment and maintenance

Standard rack installation, plug-and-play, system automatically recognizes, quickly complete deployment; Supports online hot-swapping, allowing faulty modules to be replaced without downtime. The single-channel fault isolation design does not affect the overall system operation, ensuring production continuity.

V. Application Scope

Power industry: Thermal power, hydropower, nuclear power Ovation DCS system, used for collecting the operating status, limit signals, and protection interlock signals of boiler, turbine, generator, and auxiliary equipment (pumps, fans, valves), ensuring safe monitoring and interlock protection of power station equipment.

Chemical industry: Petrochemical, fine chemical, coal chemical plants, collecting the switch status, valve feedback, liquid level / pressure switch signals of equipment such as reaction vessels, distillation towers, compressors, and conveying pumps, suitable for explosion-proof and strong interference environments, ensuring continuous production and process safety.

Oil and gas industry: Oil and gas extraction, transportation, refining and processing plants, collecting pipeline valve opening and closing, compressor start-stop, storage tank liquid level switch signals, able to withstand extreme temperatures and humid environments, achieving remote monitoring of oil and gas production equipment.

Metallurgical industry: Steel, non-ferrous metal smelting automation systems, collecting the operating status, limit signals, and safety interlock signals of heating furnaces, rolling mills, cooling systems, and dust removal equipment, able to withstand high temperatures, dust, and strong electromagnetic interference conditions, ensuring stable metallurgical production.

Other industrial scenarios: Ovation DCS system for large-scale water treatment, papermaking, cement, pharmaceutical industries, used for collecting the switch status and alarm signals of pumps, valves, fans, motors, etc., achieving automated monitoring and safety interlock of production processes.

VI. Installation and Maintenance

(1) Installation Requirements

Installation location: Fixed on the Ovation standard I/O rack DIN rail, installed firmly and vibration-proof; reserve ≥50mm above and below the module and ≥30mm left and right for heat dissipation space, ensuring good ventilation and avoiding high-temperature accumulation affecting module performance.

Environmental requirements: Working temperature -40℃ to + 85℃, humidity 0%–95% RH (non-condensing); away from strong heat sources, strong electromagnetic sources (such as frequency converters, large power motors), avoid direct sunlight and dust accumulation, and clean the cabinet ventilation channels regularly.

Cable connection specifications: Input cables use shielded twisted pair, shield layer grounded at one end, reducing electromagnetic interference; dry contact signals have no polarity requirements, wet contact signals distinguish positive and negative poles, wiring is firm without loosening; 24V DC power supply is provided by the backplane, ensuring stable and undisturbed power supply.

(2) Maintenance Points

Regular inspection: Monthly check the appearance of the module, LED status indicator lights, and wiring terminals, confirm normal input signal collection; check the DCS system diagnostic log to identify abnormal channels, communication interruptions, etc., and promptly handle potential problems.

Cleaning maintenance: Quarterly use a dry soft cloth to wipe the module surface, ventilation ports, and wiring terminals, remove dust and oil stains to avoid poor contact or poor heat dissipation; check the wiring terminals, tighten loose cables to prevent detachment due to vibration.

Fault troubleshooting: When input is abnormal, first check the on-site equipment and wiring for normality, then check the module LED fault light; when a single-channel fault occurs, isolate the channel and check the on-site equipment; when the module fails, perform online hot-swapping replacement without downtime.

Replacement precautions: Support online hot-swapping, replacement does not require downtime; after replacement, check the input status of each channel, remote diagnostic function, and communication stability, confirm normal operation before putting it into use to ensure system stability.

VII. Order Information

Product model: 1X00238H01

Brand: Emerson (Emerson)

Series: Ovation DCS System 1X Series 16-channel Isolated Digital Input Module

Packaging: Original anti-static packaging, including user manual, certificate of conformity, and installation accessories Warranty: 12-month original factory warranty, with global technical support and after-sales maintenance services provided.