1756-IF8 Allen Bradley Rockwell Analog Input Module

Product parameters

Basic overview:

Manufacturer: Allen-Bradley/Rockwell Automation

Product series: 1756 ControlLogix

Module type: Analog Input Module

Product Number: 1756-IF8 (Series A)

Input: 8 Single-Ended, 4 Differential or 2 high-speed differential inputs (36 pins)

Input signal range:

Voltage: ±10V, 0-10V, 0-5V

Current: 0-20 mA, 4-20 mA

Resolution: 16-bit (single-ended/differential mode), 15-bit (high-speed differential mode)

UPC code: 10612598291769

Data format: Integer mode (left-aligned, 2's complement) or IEEE 32-bit floating-point mode

Electrical parameters:

Backplane current

150 mA @ 5.1V DC

40 mA @ 24V DC

Total backplane power: 1.73W

Power dissipation

Voltage mode: 1.73W

Current mode: 2.33W

Heat dissipation

Voltage mode: 5.9 BTU/ hour

Current mode: 7.95 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:

Single-ended: 16-488 ms (depending on the filtering Settings)

Difference: 8-244 ms

High-speed differential: 5-122 ms

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

Isolation voltage: 250V

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

Function

Flexible analog input

Supports 8 single-ended, 4 differential or 2 high-speed differential inputs, and is compatible with voltage (±10V, 0-10V, 0-5V) and current (0-20mA, 4-20mA) signals.

Supports 2-wire and 4-wire transmitters, suitable for a variety of sensors.

High precision and signal quality

16-bit resolution, 15-bit (high-speed differential mode).

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

Supports integer mode (left-aligned, 2's complement) and IEEE 32-bit floating-point mode, adapting to different control requirements.

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:

Provide module-level fault reports and on-site diagnosis, and monitor input status and communication health.

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.

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. For example, connect a 4-20 mA transmitter to monitor the pipeline pressure.

Environmental monitoring: Interface pH meters, temperature transmitters or vibration sensors to monitor environmental parameters or equipment status.

High-density applications: 8 single-ended or 4 differential inputs, suitable for scenarios requiring more channels.

System Upgrade

Replace PLC-5 (1771-IFE), 1756-IF6I or 1756-IF6CIS, upgrade to the ControlLogix platform to enhance performance and network functions.

It is suitable for replacing applications that require more input channels (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 application: Utilizing SOE timestamps to record critical process events, it is suitable for safety instrumented systems (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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