The Siemens 6ES5701-1LA12 ER 701-1 rack provides an expansion chassis for SIMATIC S5 I/O modules in distributed systems. This passive backplane unit connects to the main CPU rack for extended I/O capacity. Its sturdy chassis measures 260 mm in height, 480 mm in width, and 150 mm in depth.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Siemens |
| Model | 6ES5701-1LA12 |
| Category | Expansion Rack / ER 701-1 |
| Number of I/O Slots | 12 |
| Backplane Type | Passive |
| Bus Communication | Parallel I/O bus (S5) |
| Expansion Cable Type | Shielded ribbon cable |
| Maximum Cable Length | 10 meters |
| Power Supply Interface | 1 position (right side) |
| Backplane Current Capacity | 6.0 A (at 5 V DC) |
| Dimensions (H×W×D) | 260 × 480 × 150 mm |
| Weight | 4.20 kg |
| Material | Powder-coated steel |
| Color | Light gray (RAL 7035) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | –25°C to +85°C |
| Protection Rating | IP20 |
| Mounting Type | Panel mount (screw) |
| Component Count | 1 (passive backplane PCB) |
Expansion Architecture and Slot Configuration
The Siemens 6ES5701-1LA12 offers 12 I/O slots for expanding SIMATIC S5 system capacity. Users can populate these slots with digital, analog, and communication modules as required. The rightmost slot accepts the power supply module for backplane distribution. The passive backplane design eliminates active components that could fail over time.
Connection to Main CPU Rack
This expansion rack connects to the CPU rack through a shielded ribbon cable. The maximum cable length reaches 10 meters for flexible physical placement. Such distance allows positioning I/O racks near field devices to reduce wiring costs. The cable carries both power and data signals between the racks efficiently.
Power Distribution and Backplane Design
The Siemens 6ES5701-1LA12 distributes 5 V DC power from the power supply module to all slots. The backplane supports up to 6.0 A total current draw from installed modules. This capacity accommodates typical combinations of 16-channel I/O modules. The single power supply interface connects to the rightmost slot for optimal power distribution.
Physical Construction and Cabinet Durability
This chassis uses powder-coated steel construction for maximum industrial durability. The robust material resists corrosion and maintains structural integrity in factory conditions. The light gray finish matches other SIMATIC S5 components for uniform appearance. Mounting tabs on the top and bottom edges accept screws for secure panel installation.
Module Insertion and System Assembly
Insert S5 modules into the Siemens 6ES5701-1LA12 by aligning with the slot guide rails. The modules lock into place with retaining clips for secure mechanical retention. Remove modules by pressing the retaining clip and pulling the module handle firmly. The passive backplane enables module exchange without powering down the complete system.
Backplane Connectors and Signal Routing
Each slot contains standard S5 backplane connectors for reliable module interfacing. The passive design routes signals between slots without active processing or buffering. Gold-plated contact surfaces ensure reliable signal transmission for all I/O modules. The backplane supports both 8-channel and 16-channel S5 I/O modules.
Panel Mounting and Clearance Requirements
Mount the Siemens 6ES5701-1LA12 on a flat panel surface using the factory-provided mounting tabs. Use four M6 screws to secure the rack firmly to the mounting surface. Position the rack horizontally or vertically depending on cabinet space availability. Allow at least 100 mm clearance above and below the chassis for cable routing and airflow.
Details
| Weight | 0.12 kg |
|---|---|
| Dimensions | 120 × 80 × 3 mm |
Reviews
There are no reviews yet.