Emerson 1C31164G01 Product Description (Ovation RTD Temperature Input Module)

1C31164G01 is a 16-channel RTD high-precision temperature input module of Emerson (formerly Westinghouse)'s Ovation DCS system. It is specially designed for collecting platinum resistance (Pt100/Pt1000) signals in industrial sites, featuring high density, high precision, strong anti-interference ability and complete diagnostic capabilities. It is widely used in key temperature monitoring scenarios such as thermal power, chemical industry, oil and gas, and metallurgy, and is the core I/O component for temperature collection in the Ovation system. 

I. Product Overview

Model: 1C31164G01

Brand: Emerson (Emerson), originally Westinghouse (Westinghouse)

Series: Ovation DCS I/O Module (RTD-specific)

Core Function: 16 independent isolated RTD (platinum resistance) temperature signal high-precision acquisition, conversion, and upload

Sensor Compatibility: Pt100 (100Ω @ 0℃), Pt1000 (1000Ω @ 0℃), compliant with DIN 43760 standard

Design Position: Industrial-grade precision temperature monitoring module, compatible with Ovation system redundant architecture, supports hot-swapping, ensuring continuous operation

Origin: United States

Warranty: 12 months

II. Core Function Characteristics

1. High-density high-precision temperature acquisition

Integrated 16 independent isolated input channels, single module realizes multi-point dense temperature measurement, significantly saving cabinet space and wiring costs. Utilizing high-resolution A/D converter, temperature measurement range covers **-200℃ to +850℃**, compatible with most industrial high and low temperature scenarios. Typical accuracy at 25℃ is ±0.1℃, resolution 0.01℃, capable of accurately capturing minute temperature fluctuations; sampling rate 50–60SPS, response time less than 500ms, ensuring temperature change signals are quickly uploaded to the controller.

2. Full-channel fault self-diagnosis

Equipped with complete channel-level and module-level diagnostic capabilities, real-time monitoring of equipment and line status, reducing the difficulty of on-site fault troubleshooting. Supports RTD sensor open circuit and short circuit detection, can promptly alarm for sensor breakage, poor contact or short circuit faults; supports 3-wire/4-wire wiring cable open circuit, resistance imbalance diagnosis, accurately locating line faults; simultaneously monitoring module power supply overvoltage/undervoltage, communication abnormalities with Ovation controller, etc., single-channel fault does not affect the normal operation of other channels, ensuring the continuous stability of the system.

3. Strong isolation and anti-interference design

Utilizing 1500VAC channel-to-channel, channel - bus dual isolation design, effectively blocking electrical interference and signal crosstalk. Common-mode rejection ratio greater than 120dB, capable of suppressing common-mode interference generated by industrial site frequency converters, motors, transformers, etc. Dual configuration of hardware filtering and software filtering, filtering time 0–100ms, flexible configuration for different interference intensities of the site environment; optimizing PCB layout and shielding design, enhancing EMI/ESD protection capability, suitable for strong electromagnetic interference sites.

4. Hot-swappable and redundancy support

Support online hot-swapping, can directly insert and replace modules while the system is running, no need for shutdown, significantly reducing maintenance costs and downtime risks. Compatible with Ovation DCS system redundant architecture, supports controller and I/O bus redundancy configuration, can achieve non-disruptive switching in the event of a fault, ensuring the continuity and reliability of key process temperature monitoring.

III. Detailed Technical Specifications

Electrical Parameters

Power supply voltage: 24VDC ±10%, taken from Ovation backplane main power supply and auxiliary power supply

Typical power consumption: ≤4.8W

Input signal type: Pt100, Pt1000 (DIN standard)

Temperature measurement range: -200℃ ~ +850℃

Measurement accuracy: ±0.1℃ (25℃ environment, Pt100)

Resolution: 14-bit A/D converter (0.01℃)

Sampling rate: 50–60SPS

Isolation level: 1500VAC / 1min (channel-to-channel, channel - backplane)

Common-mode rejection ratio: >120dB

Filtering configuration: Hardware + software dual filtering, 0–100ms configurable

Environmental Parameters Operating temperature: 0℃ ~ +60℃

Storage temperature: -40℃ ~ +85℃

Relative humidity: 5%–95% RH (no condensation)

Vibration tolerance: 5g (in accordance with IEC 60068-2-6 standard)

Impact tolerance: 30g (in accordance with IEC 60068-2-6 standard)

Protection level: IP20 (dust-proof, finger-proof)

Certifications: CE, RoHS certification Physical parameters

Dimensions: 122 × 50 × 165 mm (standard module size of Ovation)

Weight: Approximately 0.32 kg

Installation method: Standard DIN rail installation

Status indicator lights: Equipped with PWR (power), RUN (operation), COM (communication), FAULT (fault) indicator lights, as well as 16 channel status indicator lights for CH0–CH15, which display the real-time operating status of the module and channels

Communication parameters

Bus protocol: Ovation dedicated I/O bus

Data update rate: 100ms (configurable)

Redundancy support: Compatible with Ovation system redundancy configuration, with no interference switching

IV. Typical application scenarios

Power generation industry

Used for monitoring the temperatures of key equipment and media such as boiler tube wall temperature, turbine bearing temperature, flue gas inlet and outlet temperature, generator stator/rotor temperature, condenser temperature, etc., to ensure the safe and stable operation of power generation equipment.

Chemical industry

Suitable for precise temperature control scenarios such as temperature in reaction vessels, distillation tower inner temperature, pipeline medium temperature, storage tank material temperature, heat exchanger inlet and outlet temperature, etc., meeting the strict temperature accuracy requirements of chemical processes.

Oil and gas industry

Applied to monitoring the temperature at oil well wellheads, temperature along oil/gas pipelines, oil temperature in storage tanks, compressor equipment temperature, reaction temperature in refining and chemical plants, etc., suitable for high and low temperature and strong interference environments at oil and gas sites. Metallurgical industry

It is used for monitoring the temperatures of various sections of the blast furnace body, molten steel temperature, heating furnace temperature, cooling system water temperature, and rolling machine equipment temperature, ensuring the stability of temperature and equipment safety in the metallurgical production process.

Other industrial scenarios

It is widely applicable to process links in industries such as pharmaceuticals, food processing, water treatment, and papermaking that require high-precision temperature measurement and control. It is suitable for the deployment of the Ovation new system and the expansion of the old system.

V. Installation and Wiring Instructions

Module Installation

It is installed using the standard DIN rail installation method, compatible with the Ovation standard cabinet. When installing, the module spacing should be ≥ 20mm to ensure the heat dissipation space; the installation position should be away from strong electromagnetic interference equipment such as frequency converters, motors, and transformers to avoid signal interference. Hot-swappable operation is supported. During insertion or removal, no power-off is required; simply align and push or pull it in or out.

Sensor Wiring (3-wire system is the main type)

Pt100/Pt1000 3-wire system wiring (industrial mainstream)

Channel +: Connect the common terminal of the RTD sensor

Channel -: Connect the other end of the RTD sensor

Compensation wire: Connect the third wire of the RTD sensor to eliminate the influence of cable resistance on measurement accuracy

4-wire system wiring (ultra-high precision scenario)

4-wire system adds an additional compensation wire on the basis of 3-wire system, further eliminating the influence of cable resistance and contact resistance, suitable for extremely high-precision scenarios. The wiring method is similar to 3-wire system, and connection can be made according to the terminal markings.

Cable Requirements

It is recommended to use shielded twisted-pair cables, with a cable cross-sectional area of 1.5mm²; the shielding layer adopts single-ended grounding method, only grounding on the cabinet side to avoid forming a circulating current and introducing interference. The maximum cable length of 3-wire system wiring ≤ 500m, and 4-wire system ≤ 1000m, meeting the wiring requirements of most industrial sites.

Software Configuration (Ovation System)

After module installation and wiring, simple configuration can be made in the Ovation system to put it into use: Select channel type as Pt100 or Pt1000; set wiring method as 3-wire system or 4-wire system; configure filtering time (0–100ms); select temperature unit (℃/℉); set high/low temperature alarms, break wire alarm thresholds, etc., parameters.

VI. Ordering and Supplementary Information

Ordering Model: 1C31164G01

Supplementary Accessories:

Terminal Block: 1C31190G01 (16-channel dedicated terminal, used for wiring)

Connection Cable: Ovation dedicated I/O bus cable

Sensor Compatibility: Pt100/Pt1000 (3-wire / 4-wire system, selected according to on-site requirements)