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- Allen Bradley
- 1769SC-IF8U
- CompactLogix I/O Module
- USA
- 118 mm × 35 mm × 87 mm
- 0.26kg
- Xiamen, China
- New & In Stock
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Technical Report: Universal Analog Input Module 1769SC-IF8U
1. Product Overview
The 1769SC-IF8U is a universal analog input module designed for Compact I/O PLC systems. It is used to collect and convert multiple types of analog field signals into digital data for PLC processing.
This module supports voltage, current, thermocouple, RTD, and resistance signals in a single hardware unit, eliminating the need for multiple dedicated input modules.
It is widely used in industrial automation systems requiring flexible signal acquisition and high-density analog input capability.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Category: Universal Analog Input Module
- Technology Field: Industrial Automation / Signal Acquisition Systems
- Manufacturing Origin: United States (varies by production batch)
3. Product Series
- Series Name: Compact I/O Series
- System Architecture: Modular PLC expansion platform
- Compatible Systems: Compact PLC and Micro-class PLC platforms
- Installation Type: DIN rail backplane system
The module is part of a flexible I/O ecosystem designed for scalable industrial control systems.
4. Product Introduction
The 1769SC-IF8U provides 8 universal analog input channels, capable of handling multiple signal types per channel.
Each channel can be configured for:
- Voltage signals
- Current signals (0–20 mA / 4–20 mA)
- Thermocouple types (J, K, T, E, R, S, B, N, C)
- RTD sensors (Pt, Ni, Cu types)
- Resistance measurement
This flexibility allows engineers to reduce spare parts inventory and simplify system design.
5. Technical Parameters
5.1 Input Performance
| Parameter | Value |
|---|---|
| Number of Channels | 8 universal inputs |
| Resolution | 16-bit |
| Input Types | Voltage / Current / TC / RTD / Resistance |
| Voltage Range | ±50 mV, ±100 mV, 0–5 V, 1–5 V, 0–10 V, ±10 V |
| Current Range | 0–20 mA, 4–20 mA |
| Thermocouple Types | J, K, T, E, R, S, B, N, C |
| RTD Types | Pt385/3916, Ni618/672, Cu426 |
| Resistance Range | 0–150 Ω, 0–1000 Ω, 0–3000 Ω |
| Channel Isolation | Channel-to-channel isolation (design dependent) |
5.2 Electrical Performance
| Parameter | Value |
|---|---|
| Power Consumption | ~3 W |
| Input Impedance | High impedance for voltage inputs |
| Overvoltage Protection | ±30 V DC continuous |
| Overcurrent Protection | ±28–40 mA |
| Update Rate | 10 Hz to 1000 Hz selectable |
| Filtering Options | Multiple programmable filters per channel |
5.3 Accuracy & Signal Quality
| Parameter | Value |
|---|---|
| Resolution | 16-bit high precision |
| Noise Rejection | High common-mode rejection (≈115 dB) |
| Measurement Stability | Industrial-grade drift compensation |
| Calibration | Auto-calibration supported |
5.4 Physical Dimensions & Weight
| Parameter | Value |
|---|---|
| Height | 118 mm |
| Width | 35 mm |
| Depth | 87 mm |
| Mounting Type | DIN rail / panel mount |
| Weight | 0.26 kg (approx. 0.56 lbs) |
| Form Factor | Single-slot module |
5.5 Wiring & Installation
| Parameter | Value |
|---|---|
| Wire Type | Shielded copper recommended |
| Signal Wiring | Single-ended input configuration |
| RTD Wiring | 2-wire / 3-wire / 4-wire supported |
| Thermocouple Wiring | Shielded thermocouple extension wire |
| Installation | Backplane module insertion |
6. Product Applications
The 1769SC-IF8U is widely used in automation systems requiring multi-signal analog acquisition.
Typical application areas:
- Industrial process control systems
- Temperature monitoring systems
- Chemical processing plants
- Energy management systems
- HVAC monitoring systems
- Food and beverage production lines
- Water treatment facilities
- Machine condition monitoring systems
Functional role:
- Multi-signal data acquisition
- Sensor integration simplification
- Centralized analog signal processing
- Reduction of dedicated analog modules
7. Product Advantages
7.1 Multi-Signal Integration
Supports voltage, current, RTD, thermocouple, and resistance in one module.
7.2 High Flexibility
Each channel can be independently configured for different signal types.
7.3 Space Optimization
Replaces multiple dedicated analog modules, saving cabinet space.
7.4 High Resolution Measurement
16-bit resolution provides precise industrial signal acquisition.
7.5 Reduced System Cost
Lower hardware variety reduces inventory and maintenance cost.
7.6 Industrial Robustness
Designed for stable operation in noisy electrical environments.
8. Recommended Models (Same Series / Related Modules)
8.1 Same Series / Related Modules
| Model | Description | Key Parameters |
|---|---|---|
| 1769-IF8 | Standard analog input module | 8-channel voltage/current input |
| 1769-IF4 | Compact analog input module | 4-channel process input |
| 1769-OF4CI | Analog current output module | 4-channel 4–20 mA output |
| 1769-OF8C | Analog output module | 8-channel current output |
| 1769-OV16 | Digital output module | 16-channel DC sinking output |
9. Recommended Models (Same Brand – Popular Modules)
| Model | Type | Key Parameters |
|---|---|---|
| 1769-L24ER | PLC Controller | Integrated CPU, Ethernet communication |
| 1769-L33ER | PLC Controller | High-performance processor, motion control |
| 1769-IQ16 | Digital Input Module | 16-channel discrete input |
| 1769-OB32 | Digital Output Module | 32-channel transistor output |
| 1769-OW16 | Relay Output Module | 16-channel AC/DC switching |
10. Summary
The 1769SC-IF8U is a high-flexibility universal analog input module designed for modern industrial automation systems requiring multi-type signal acquisition.
Its ability to handle voltage, current, thermocouple, RTD, and resistance signals in a single module makes it a compact and cost-efficient solution for complex industrial monitoring applications.