ProductPRODUCT
Featured products
Contact Us
- Allen Bradley
- 1746SC-IB8I
- PLC Module/Rack
- USA
- 152 × 127 × 38 mm
- 0.3kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 6
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Allen Bradley 1746SC-IB8I — Detailed Technical Overview
1. Product Introduction
The Allen Bradley 1746SC-IB8I is an isolated digital DC input module designed for modular PLC systems within the SLC 500 platform. It is categorized as a specialty input module, mainly used in applications where signal integrity and electrical isolation are critical.
This module provides eight independent input channels, with each channel electrically isolated from the others. This design prevents signal interference and protects the control system from voltage fluctuations or faults originating in field wiring.
It is typically used to receive 24V DC signals from field devices such as sensors, switches, and relay contacts. The module is installed in the PLC rack and communicates through the backplane, ensuring stable and real-time data acquisition.
2. Product Parameters
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1746SC-IB8I |
| Series | SLC 500 |
| Module Type | Isolated Digital Input |
| Number of Inputs | 8 |
| Input Voltage | 24 V DC |
| Input Voltage Range | 10–30 V DC |
| Input Current (Typical) | Approx. 10–15 mA @ 24V |
| Off-State Current | ≤ 2 mA |
| Isolation Voltage | Up to 1500 V AC (channel-to-channel) |
| Points per Common | 1 (individual isolation) |
| Response Time | Approx. 8–12 ms |
| Power Consumption | Approx. 3–6 W |
| Status Indicators | Individual LED per channel |
| Operating Temperature | 0 to 60°C |
| Humidity | 5–95% non-condensing |
| Installation Type | Rack-mounted |
| Dimensions (mm) | 152 × 127 × 38 |
| Weight (kg) | 0.3 kg |
3. Product Applications
The 1746SC-IB8I is suitable for industrial environments where input signals require isolation and stability.
Typical applications include:
- Monitoring push buttons, selector switches, and limit switches
- Reading proximity sensors and photoelectric sensors
- Interfacing with relay contacts and field devices
- Systems with multiple independent signal sources
- Environments with high electrical noise or interference
It is particularly useful in installations where signals originate from different power supplies or where fault isolation is necessary.
4. Product Advantages
Independent Channel Isolation
Each input is electrically isolated, preventing interference and improving system safety.
High Noise Immunity
Performs reliably in electrically noisy environments such as factories with heavy machinery.
Flexible Signal Integration
Supports multiple independent signal sources without shared commons.
Reliable Input Detection
Ensures accurate reading of 24V DC signals with stable performance.
Improved System Protection
Isolation helps protect the PLC and connected modules from voltage spikes or wiring faults.
Industrial-Grade Construction
Designed for long-term use under demanding operating conditions.
5. Brand Information
Allen Bradley is widely known in industrial automation for producing PLC systems, I/O modules, and control components.
Its products are used across various industries, including manufacturing, energy, and process control, and are valued for reliability and long service life.
6. Product Series
- Series Name: SLC 500
- Category: Digital Input Module (Isolated Type)
The SLC 500 series is a modular PLC platform designed to provide flexible and scalable automation solutions. It supports a wide range of digital, analog, and specialty modules for diverse industrial applications.
7. Recommended Models (Same Series / Related)
Related Models Table
| Model | Function | Inputs | Voltage Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746SC-IA8I | Isolated Input | 8 | 120V AC/DC | 146 × 133 × 32 | 0.45 kg |
| 1746-IB8 | Digital Input | 8 | 24V DC | 150 × 150 × 84 | 0.2 kg |
| 1746-IB16 | Digital Input | 16 | 24V DC | 145 × 35 × 130 | 0.3 kg |
| 1746-ITB16 | Digital Input | 16 | 24V DC Sink/Source | 145 × 35 × 130 | 0.25 kg |
| 1746-IM8 | Digital Input | 8 | 120/240V AC | 145 × 35 × 130 | 0.3 kg |
8. Recommended Popular Models (Same Brand)
Popular Models Table
| Model | Series | Function | Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1756-EN2T | ControlLogix | Ethernet Module | Communication | 140 × 112 × 145 | 0.5 kg |
| 1756-IF8 | ControlLogix | Analog Input | 8-channel | 140 × 112 × 145 | 0.6 kg |
| 1769-L33ER | CompactLogix | Controller | CPU | 118 × 87 × 140 | 0.7 kg |
| 1769-IF4 | CompactLogix | Analog Input | 4-channel | 118 × 87 × 140 | 0.5 kg |
| 1606-XLS240E | Power Supply | DIN Rail PSU | 24V DC | 123 × 50 × 125 | 0.8 kg |