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- 1769-CRL1
- CompactLogix I/O Module
- USA
- 118 mm × 87 mm × 50 mm
- 0.31kg
- Xiamen, China
- New & In Stock
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Technical Report: 1769-CRL1 Compact I/O Right-to-Left Bus Expansion Cable
1. Product Overview
The 1769-CRL1 is a Compact I/O bus expansion cable used in industrial automation systems to connect two separate I/O banks in a CompactLogix or compatible Compact I/O architecture. It provides a physical and electrical extension of the backplane communication bus, allowing multiple module groups to operate as a unified control system.
This product does not process signals or execute control logic. Its sole function is to maintain high-speed and reliable communication between distributed I/O racks inside a control cabinet.
It is commonly used when system layout constraints require separation of I/O modules into different physical sections.
2. Brand and Series Information
Brand: Industrial automation control platform ecosystem
Series: 1769 Compact I/O Series
Product Family: Bus Expansion Accessories
Module Type: Right-to-Left Compact I/O Expansion Cable
3. Product Function Description
The 1769-CRL1 provides a direct backplane connection between two Compact I/O banks.
Core functions include:
- Connecting left and right I/O banks in Compact I/O systems
- Extending backplane communication across separated module groups
- Supporting multi-bank system architecture (up to 3 banks total)
- Maintaining synchronized I/O data transmission
- Allowing independent power supply per I/O bank
- Enabling flexible cabinet layout design
A system can use up to two expansion cables, allowing segmentation into multiple functional I/O zones.
4. Technical Parameters
Electrical and Communication Characteristics
| Parameter | Value |
|---|---|
| Function Type | Backplane communication expansion cable |
| Signal Type | Parallel I/O bus extension |
| System Compatibility | Compact I/O 1769 platform |
| Maximum Expansion | Up to 3 I/O banks |
| Cable Usage Limit | Max 2 cables per system |
| Isolation Voltage | 30 V continuous |
| Backplane Current | 1.4 A at 24 V (system dependent) |
Mechanical Parameters
| Parameter | Value |
|---|---|
| Cable Length | 0.3 m (1 ft) |
| Physical Dimensions (installed system reference) | Approx. 118 mm × 87 mm × 50 mm |
| Connector Type | Multi-pin locked backplane connectors |
| Installation Method | Plug-in chassis connection |
| Weight | 0.28 kg – 0.31 kg |
| Cable Type | Shielded industrial bus cable assembly |
Environmental Conditions
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% – 95% non-condensing |
| Vibration Resistance | Industrial control cabinet rated |
| Shock Resistance | IEC industrial standard |
5. Product Advantages
1. Flexible System Segmentation
Allows a single Compact I/O system to be divided into multiple physically separated banks without losing communication integrity.
2. Simplified Cabinet Design
Reduces wiring complexity when I/O modules cannot be installed on a single DIN rail.
3. Stable High-Speed Backplane Communication
Ensures deterministic and synchronized data transfer between I/O banks.
4. Modular System Expansion
Supports scalable architecture for medium to large automation systems.
5. Independent Power Architecture
Each I/O bank can be powered separately, improving fault isolation and system stability.
6. Application Areas
The 1769-CRL1 is commonly used in:
- Modular industrial automation control panels
- Large manufacturing production lines
- Conveyor and logistics systems
- Multi-zone machine control systems
- Process automation systems requiring distributed I/O
- Retrofitting and expansion of PLC cabinets
- Factory automation systems with space constraints
It is especially valuable when physical cabinet layout forces separation of I/O modules into multiple sections.
7. Recommended Models (Same Series / Related Components)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-CRR1 | Right-to-Right Bus Cable | 0.3 m expansion cable | I/O bank linking |
| 1769-CRR3 | Right-to-Right Bus Cable | Extended version bus cable | Multi-bank expansion |
| 1769-CLL1 | Left-to-Left Bus Cable | Short expansion connection | Bank segmentation |
| 1769-CLL3 | Left-to-Left Bus Cable | 0.3 m expansion cable | Multi-bank architecture |
| 1769-CRL3 | Right-to-Left Bus Cable | Extended version cable | Flexible cabinet layout |
8. Other Popular Models (Same Platform – Widely Used)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-L33ER | PLC Controller | Integrated EtherNet/IP CPU | Machine automation |
| 1769-L36ERM | PLC Controller | High-performance motion control CPU | Advanced automation systems |
| 1769-AENTR | Ethernet Adapter Module | Dual-port EtherNet/IP communication | Distributed I/O networking |
| 1769-SDN | DeviceNet Scanner Module | Master fieldbus controller | Legacy network integration |
| 1769-IF8 | Analog Input Module | 8-channel analog signal input | Process monitoring |
9. Summary
The 1769-CRL1 is a structural communication accessory within Compact I/O systems, designed to extend the backplane bus between multiple I/O banks. It does not perform logic or signal processing but plays a critical role in system architecture flexibility and modular expansion.
Its main strengths are reliable communication extension, flexible system segmentation, and support for scalable multi-bank PLC configurations.
It is an essential component in medium to large automation systems where physical layout constraints require distributed I/O architecture.