1756-IF8H Allen Bradley Rockwell Analog Input Module

Product parameters

Basic overview:

Manufacturer: Allen-Bradley/Rockwell Automation

Product series: 1756 ControlLogix

Module type: HART Analog Input Module with HART Protocol

Product Number: 1756-IF8H (Series A)

Input: 8 Differential voltage or current input channels, with HART protocol support

Input signal range:

Voltage: ±10V, 0-10V, 0-5V, 1-5V

Current: 0-20 mA, 4-20 mA

Resolution: 16-21 bits

HART support: Each module is equipped with one HART modem and supports HART 5, 6, and 7 protocols

UPC code: 612598292318

Data format: Integer mode (left-aligned, 2's complement), IEEE 32-bit floating-point mode, supports HART PV (process variable) or channel-by-channel HART data

Electrical parameters:

Backplane current

300 mA @ 5.1V DC

135 mA @ 24V DC

Total backplane power: 4.77W

Power dissipation

Voltage mode: 3.21W (11.0BTU/hour)

Current mode: 4.01 W (13.7 BTU/ hour)

Conversion method: Sigma-Delta analog-to-digital conversion

Input impedance:

Voltage mode: >10 MΩ

Current mode: 249 Ω

Overvoltage protection

Voltage: ±30V (continuous)

Current: ±30 mA (continuous)

Common-mode noise suppression: >80 dB @ 50/60 Hz

Channel update time:

Analog signal: 8-488 ms (Depending on the filtering Settings)

HART data: Approximately 1 second per channel (typical value)

Open-circuit detection time: Positive full-scale reading within 5 seconds

Isolation voltage: 250V (Basic insulation type, isolated input to the backplane and between channels, test voltage 1350V AC for 2 seconds)

Shell type: Open type

Installation method: Install on the 1756 ControlLogix rack (supporting racks with 4, 7, 10, 13, and 17 slots)

Wiring:

Use detachable terminal blocks (RTB) : 1756-TBCH (36-pin screw terminal) or 1756-TBS6H (36-pin spring terminal)

Operating temperature: 0°C to 60°C (32°F to 140°F)

Storage temperature: -40°C to 85°C (-40°F to 185°F)

Relative humidity: 5-95% (non-condensing)

Vibration: 2 g @ 10-500 Hz

Operating impact: 30 g

Non-operational impact: 50 g

Temperature code: T4 (North American and IEC standards)

Certification:

UL, c-UL-us (Class I, Division 2 Hazardous Environment), CE, C-Tick, FM, ATEX, IECEx

It complies with the requirements of contamination level 2 and overvoltage category II of IEC 60664-1

HART Function: Supports HART 5, 6, and 7 protocols, providing device diagnosis, configuration, and access to process variables (PV, SV, TV, QV)

Function

HART analog input:

It provides 8 differential voltage or current input channels, supporting ±10V, 0-10V, 0-5V, 1-5V and 0-20mA / 4-20mA signals, and is compatible with 2-wire and 4-wire transmitters.

Built-in HART modem (1 unit/module), supporting HART protocol, allowing access to process variables (PV, SV, TV, QV), device status and diagnostic information of smart devices.

High precision and signal quality

16-21 bit resolution (depending on the input range) ensures high-precision signal acquisition.

Built-in signal quality detection (over-range/under-range, open-circuit detection), providing diagnostic information through Studio 5000.

Supports digital filtering (configurable) to reduce noise interference and enhance signal stability.

Data Format and Processing

Support three data formats: Analog Only, analog +HART PV, and channel-by-channel analog +HART, facilitating compatibility with non-HART modules or access to detailed HART data.

Using Sigma-Delta analog-to-digital conversion, it provides high precision and rapid response.

Supports real-time sampling (RTS) interval (minimum 25 ms), suitable for dynamic process monitoring.

Diagnosis and Safety:

Each channel is independently isolated to prevent interference between channels and enhance noise immunity.

Supports Event Sequence (SOE) timestamps to record input changes, suitable for critical applications.

Encrypted communication is carried out through CIP Security (EtherNet/IP) to prevent data tampering.

The HART protocol provides equipment health status, calibration information and fault diagnosis, reducing downtime.

Modular design

Single-slot module, supporting hot plugging (RIUP, Removal and Insertion Under Power), facilitating maintenance.

Simplify on-site wiring by using RTB (1756-TBCH or 1756-TBS6H) or 1492 IFM.

Network integration

Supports EtherNet/IP, ControlNet and DeviceNet networks, and is suitable for local or distributed I/O configuration.

Using the Producer-Consumer architecture allows multiple ControlLogix controllers to share input data.

Application scenarios

Industrial Automation

Process control: Measures analog signals such as pressure, flow rate, liquid level and temperature, and is applicable to industries such as petrochemical, pharmaceutical, food processing and water treatment.

Equipment monitoring: Access the operating status, calibration data and fault information of intelligent devices through the HART protocol to optimize maintenance plans.

High-precision application: Utilizing isolated channels and 16-21 bit resolution, it is suitable for noise-sensitive environments.

System Upgrade

Replace PLC-5 (1771-IFE), 1756-IF6I or 1756-IF6CIS, upgrade to the ControlLogix platform, and add HART function and the number of channels.

Suitable for replacing applications that require more input channels or HART support (compared to the 6 channels of 1756-IF6I/IF6CIS).

Distributed control: Integrated into distributed I/O systems via EtherNet/IP or ControlNet networks, suitable for large factories.

Key applications: Utilizing SOE timestamps and HART diagnostics to record critical process events, suitable for safety instrumentals (SIS).

Advantage Products:

All items are Distributor Ready-stock Genuine Brand-new Supplying, please inform us if the other conditions are needed, Used, Open-box, Refurbished, etc.

Many Available just wait for you, feel free to ask to get better deal!!!

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