Siemens 6ES7400-1TA01-0AA0 S7-400 UR1 Universal Rack | 9-Slot PLC Mounting System

Siemens S7-400 UR1 Universal Rack – Industrial-Grade PLC Mounting System

The Siemens 6ES7400-1TA01-0AA0 UR1 Universal Rack is a professional-grade mounting solution designed for S7-400 programmable logic controller (PLC) systems. Through precision-engineered aluminum construction and an integrated backplane bus architecture, it delivers reliable module installation, signal transmission, and power distribution for demanding industrial automation environments.

Ideal for process manufacturing, chemical plants, power generation facilities, water treatment systems, and discrete manufacturing operations, this rack addresses critical challenges including limited cabinet space, complex wiring requirements, system scalability constraints, and the need for robust electromagnetic compatibility in harsh industrial settings.

With standardized 9-slot configuration and flexible customization options, the UR1 rack offers proven reliability, simplified installation, excellent thermal management, and long-term serviceability—making it the preferred choice for system integrators, control panel builders, OEM equipment manufacturers, and plant maintenance teams. Contact our automation engineers for application-specific configuration guidance and technical specifications.

Core Features & Engineering Advantages

Modular 9-Slot Architecture
Accommodates up to 9 S7-400 series modules including CPUs, communication processors, signal modules, and function modules. The standardized slot spacing ensures compatibility across the entire S7-400 product family while maintaining optimal signal integrity.

Integrated Backplane Bus System
High-speed backplane provides seamless data exchange between modules at up to 12 Mbit/s, eliminating external cabling between adjacent modules and reducing installation time by approximately 40% compared to distributed I/O configurations.

Robust Aluminum Construction
Precision-extruded aluminum profile with anodized surface treatment delivers superior mechanical strength, excellent heat dissipation (thermal conductivity >200 W/m·K), and corrosion resistance for extended service life in industrial environments rated IP20.

DIN Rail & Panel Mount Compatibility
Supports both standard 35mm DIN rail mounting and direct panel installation with pre-drilled mounting holes, offering flexible integration into control cabinets, machine enclosures, and custom automation panels.

Comprehensive Protection Features
Built-in EMC shielding, grounding terminals, and strain relief provisions protect sensitive electronics from electromagnetic interference, voltage transients, and mechanical stress—ensuring system uptime exceeds 99.9% in properly maintained installations.

Tool-Free Module Installation
Snap-in module retention mechanism with positive locking allows rapid installation and replacement without specialized tools, reducing maintenance downtime and simplifying field service operations.

Typical Industrial Applications

This universal rack is engineered for automation systems requiring high reliability, deterministic performance, and long-term availability:

Process Manufacturing & Chemical Plants
Provides stable mounting platform for distributed control systems (DCS) managing continuous processes such as refining, petrochemicals, pharmaceuticals, and food & beverage production where process stability and safety interlocks are critical.

Power Generation & Utilities
Supports turbine control, generator protection, substation automation, and SCADA systems in power plants, renewable energy facilities, and electrical distribution networks requiring 24/7 operation and compliance with IEC 61850 standards.

Water & Wastewater Treatment
Enables reliable control of pumping stations, filtration systems, chemical dosing, and SCADA monitoring in municipal water treatment facilities where system failures can impact public health and environmental compliance.

Automotive & Discrete Manufacturing
Facilitates high-speed production line control, robotic work cells, material handling systems, and quality inspection stations in automotive assembly, electronics manufacturing, and packaging operations requiring cycle times under 100ms.

Building Automation & HVAC Systems
Supports centralized control of chillers, boilers, air handling units, and energy management systems in commercial buildings, hospitals, and data centers where energy efficiency and indoor air quality are priorities.

Technical Specifications & Selection Guide

To ensure optimal system performance, please review these key specifications when planning your S7-400 configuration:

Physical Dimensions

• Module Slots: 9 positions (numbered 1-9 from left to right)
• Rack Length: Approximately 530mm (20.9 inches)
• Height: 290mm (11.4 inches) including mounting rail
• Depth: 210mm (8.3 inches) typical with modules installed
• Weight: 1.0 kg (2.2 lbs) rack only, up to 8 kg fully populated

Electrical Characteristics

• Backplane Bus: S7-400 proprietary protocol, 12 Mbit/s transfer rate
• Power Distribution: Via dedicated power supply modules (PS 405 series)
• Grounding: Functional earth connection with <0.1Ω impedance
• Isolation: Module-to-backplane isolation >500V DC

Environmental Ratings

• Operating Temperature: 0°C to +60°C (32°F to 140°F)
• Storage Temperature: -40°C to +70°C (-40°F to 158°F)
• Relative Humidity: 5% to 95% non-condensing
• Protection Class: IP20 (enclosed cabinet installation required)
• Vibration Resistance: IEC 60068-2-6 (10-58 Hz, 0.075mm amplitude)

Compliance & Certifications

• CE marked for European Union directives
• UL/cUL listed for North American installations
• EMC compliance: EN 61000-6-2 (immunity), EN 61000-6-4 (emissions)
• Safety: IEC 61131-2, UL 508, CSA C22.2

Configuration Recommendations

When selecting your rack configuration, consider these factors:

• Module Count: Reserve 1-2 slots for future expansion; typical configurations use 6-8 slots initially
• Power Budget: Calculate total module current draw; select PS 405 power supply accordingly (5A, 10A, or 20A models available)
• Heat Dissipation: Ensure cabinet ventilation provides >50 CFM airflow for fully populated racks
• Cable Management: Allow 150mm clearance above/below rack for cable routing and service access
• Redundancy: For critical applications, consider dual-rack configurations with redundant CPUs and I/O

For application-specific sizing assistance, please provide: system I/O count, communication requirements, cycle time targets, environmental conditions, and any industry-specific certifications needed. Our automation engineers will recommend the optimal configuration and provide detailed BOMs.

Advanced Integration Capabilities

Multi-Rack Expansion
Connect up to 4 racks (UR1/UR2) via S7-400 expansion interfaces, supporting systems with 100+ I/O modules and distributed processing across multiple control cabinets.

Hot-Swap Module Support
When used with redundant S7-400H systems, certain modules can be replaced during operation without process interruption—critical for continuous manufacturing and utility applications.

Industrial Ethernet Integration
Seamlessly integrates with PROFINET, Industrial Ethernet/IP, and Modbus TCP networks via CP 443-1 communication processors for plant-wide connectivity and MES/ERP integration.

Diagnostic & Maintenance Features
LED status indicators on each module, integrated system diagnostics via TIA Portal engineering software, and predictive maintenance capabilities through SIMATIC PCS 7 or WinCC SCADA platforms.

Delivery, Support & Quality Assurance

Lead Times & Availability
Standard UR1 racks typically ship within 3-5 business days from regional distribution centers. Custom configurations or large project quantities may require 2-4 weeks; contact us for expedited delivery options.

Warranty & Service
All Siemens S7-400 components include a minimum 12-month manufacturer warranty covering defects in materials and workmanship. Extended warranty programs and preventive maintenance contracts are available through authorized Siemens Solution Partners.

Technical Documentation
Each rack ships with comprehensive documentation including: installation manual, dimensional drawings, wiring diagrams, module compatibility matrix, and safety instructions in multiple languages. Digital documentation available via Siemens Industry Online Support portal.

Installation & Commissioning Support
Remote technical guidance provided at no charge during normal business hours. On-site installation assistance, system commissioning, and operator training available through our network of certified system integrators (rates vary by region and project scope).

Genuine Siemens Quality
All products sourced directly from authorized Siemens distribution channels with full traceability. Counterfeit protection features include holographic labels, serialized packaging, and verification via Siemens Product Verification Service.

Frequently Asked Questions

Q: How do I integrate the S7-400 UR1 rack with existing automation systems?
A: The UR1 rack connects to your existing S7-400 CPU and I/O modules via the integrated backplane bus—no external cabling required between modules. For multi-rack systems, use interface modules (IM 460-0, IM 460-1, or IM 460-3) to extend the bus up to 10 meters between racks. Confirm your CPU model supports the required number of racks (typically 1-4 depending on CPU series).

Q: What is the maximum number of modules this rack can accommodate?
A: The UR1 rack provides 9 slots. Slot 1 is reserved for the power supply module (PS 405 series), leaving 8 slots available for CPUs, communication processors, and I/O modules. Note that some modules occupy 2 slots (e.g., certain analog modules), so effective capacity may be 6-8 modules depending on your configuration.

Q: What energy savings can I expect compared to older relay-based control panels?
A: While the rack itself is passive (no energy consumption), S7-400 PLC systems typically reduce overall energy usage by 20-35% through optimized process control algorithms, variable frequency drive integration, and elimination of continuously-energized relay coils. Actual savings depend on application type, operating hours, and control strategy implementation.

Q: What are the environmental requirements for installation?
A: The UR1 rack is rated IP20 and must be installed inside an enclosed control cabinet. Maintain ambient temperature between 0-60°C, relative humidity below 95% non-condensing, and ensure adequate ventilation (minimum 50 CFM for fully populated racks). Avoid direct sunlight, corrosive atmospheres, and excessive vibration. For harsh environments, consider NEMA 4X or IP65-rated enclosures with climate control.

Q: Does this rack support remote monitoring and data acquisition?
A: Yes, when equipped with appropriate communication modules (CP 443-1 for PROFINET, CP 443-5 for PROFIBUS, or CP 443-1 Advanced for IT protocols), the S7-400 system enables remote monitoring via SCADA systems, cloud connectivity through SIMATIC MindSphere, and integration with OPC UA, MQTT, or REST APIs for Industry 4.0 applications. Cybersecurity features include TLS encryption, user authentication, and firewall capabilities.

Q: Can I mix different generations of S7-400 modules in the same rack?
A: Yes, the UR1 rack maintains backward compatibility across S7-400 module generations. However, verify firmware compatibility between your CPU and older modules using the Siemens Hardware Compatibility Tool. Some legacy modules may require firmware updates or have limited functionality with newer CPUs. Consult the S7-400 system manual or contact technical support for specific module combinations.

Request Technical Consultation & Quotation

To receive a customized system configuration, detailed pricing, or application engineering support, please provide the following information to our automation specialists:

• Project name and industry sector
• Application type (process control, discrete manufacturing, infrastructure, etc.)
• Total I/O count (digital inputs/outputs, analog channels)
• Communication requirements (PROFINET, PROFIBUS, Industrial Ethernet, etc.)
• Number of racks and modules anticipated
• Power supply specifications (voltage, current capacity)
• Environmental conditions (temperature range, enclosure type)
• Delivery timeline and installation location

Our engineering team will respond within 1 business day with a comprehensive proposal including part numbers, lead times, and technical recommendations tailored to your application requirements.

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