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- Allen Bradley
- 1746-IM8
- PLC Module/Rack
- USA
- 145 × 171 × 130 mm
- 0.34kg
- Xiamen, China
- New & In Stock
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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.
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Allen Bradley 1746-IM8 — Comprehensive Technical Overview
1. Product Introduction
The Allen Bradley 1746-IM8 is a digital AC input module designed for modular PLC systems, specifically intended for medium-voltage AC signal acquisition. It acts as an interface between field devices and the control system, converting AC input signals into logic-level data that can be processed by the controller.
This module provides 8 discrete input channels, offering a balanced solution between compact size and moderate input capacity. It is optimized for use with 220–240V AC signals, which are widely used in industrial environments across many regions.
Installed within a chassis, the module communicates with the processor via the backplane, ensuring reliable and consistent signal transmission. It is commonly used in applications requiring stable monitoring of AC-powered control devices.
2. Brand and Series
- Brand: Allen-Bradley
- Series: SLC 500 Series
- Product Type: Digital AC Input Module (Medium Voltage)
The SLC 500 series is a modular PLC platform widely used in industrial automation. The 1746-IM8 expands its flexibility by providing a mid-range AC input solution.
3. Product Parameters
Below is a detailed and structured parameter table for the 1746-IM8:
| Parameter | Specification |
|---|---|
| Model | 1746-IM8 |
| Product Type | Digital AC Input Module |
| Series | SLC 500 |
| Number of Inputs | 8 channels |
| Input Voltage Range | 170–265 V AC |
| Nominal Voltage | 240 V AC |
| Input Frequency | 47–63 Hz |
| Input Current | approx. 8–10 mA per channel |
| Signal Delay (ON) | approx. 20–30 ms |
| Signal Delay (OFF) | approx. 30–40 ms |
| Input Grouping | 1 or 2 groups depending on wiring |
| Isolation | Optical isolation (field to backplane) |
| Isolation Voltage | approx. 1500 V AC |
| Backplane Current (5V) | approx. 50–70 mA |
| Backplane Current (24V) | 0 mA |
| Power Dissipation | approx. 2.5 W total |
| Status Indicators | LED per input |
| Wiring | Terminal block |
| Mounting | SLC chassis slot |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Dimensions | approx. 145 × 171 × 130 mm |
| Weight kg（ ） | 0.34 kg |
4. Product Applications
The 1746-IM8 is widely used in industrial automation systems where medium-voltage AC input signals must be monitored:
- Industrial control panels using 220–240V AC signals
- Push button and selector switch input monitoring
- Limit switch and relay contact detection
- Machine status and fault indication systems
- Conveyor and material handling equipment
- Packaging and production line automation
- Auxiliary AC input expansion in PLC systems
It is particularly suitable for systems requiring a moderate number of AC input points with reliable performance.
5. Product Advantages
Balanced channel capacity
Provides 8 input channels, offering a good balance between compact size and functionality.
Medium-voltage compatibility
Supports 220–240V AC signals, suitable for global industrial standards.
Reliable AC signal processing
Ensures stable detection and conversion of AC input signals.
Electrical isolation
Protects the control system from electrical noise and voltage transients.
Clear visual diagnostics
LED indicators allow quick monitoring and troubleshooting.
Flexible integration
Easily integrates into modular PLC systems alongside other I/O modules.
6. Recommended Models (Same Series or Related)
Below are 5 related models within the same SLC 500 series or similar I/O category:
| Model | Series | Function | Power | Dimensions (mm) | Weight kg（ ） |
|---|---|---|---|---|---|
| 1746-IM4 | SLC 500 | 4-point AC input (240V) | 240V AC | 127 × 152 × 51 | 0.30 |
| 1746-IM16 | SLC 500 | 16-point AC input (240V) | 240V AC | 145 × 171 × 130 | 0.38 |
| 1746-IA8 | SLC 500 | 8-point AC input (120V) | 120V AC | 145 × 171 × 130 | 0.30 |
| 1746-IB16 | SLC 500 | 16-point DC input module | 24V DC | 249 × 166 × 55 | 0.39 |
| 1746-OA16 | SLC 500 | 16-point AC output module | 120/240V AC | 145 × 171 × 130 | 0.40 |
These modules are typically combined to build complete and scalable I/O systems.
7. Recommended Popular Models (Same Brand)
Below are 5 widely used models from the same brand in industrial automation systems:
| Model | Product Type | Key Function | Power | Dimensions (mm) | Weight kg（ ） |
|---|---|---|---|---|---|
| 1747-L551 | PLC CPU | Modular controller | 24V DC | 145 × 140 × 130 | 0.95 |
| 1756-L73 | PLC Processor | High-performance control | 24V DC | 145 × 140 × 130 | 0.90 |
| 1769-L33ER | Compact PLC | Integrated automation control | 24V DC | 118 × 87 × 87 | 0.50 |
| 1734-IB8 | I/O Module | Digital input module | 24V DC | 56 × 12 × 75 | 0.12 |
| 1756-OB16E | Digital Output Module | 16-point output | 24V DC | 137 × 140 × 130 | 0.40 |