Product Overview

The Siemens 6ES7417-4HL01-0AB0 is a high-availability central processing unit specifically engineered for the SIMATIC S7-400H fault-tolerant automation system. This CPU 417H is the most powerful processor in its class, designed for mission-critical applications where system downtime could result in significant financial loss or safety hazards. By utilizing a redundant architecture, this controller ensures that if one processor fails, the secondary unit takes over bumplessly, maintaining continuous process control.

With a total integrated work memory of 4MB—split equally with 2MB for program code and 2MB for data—the CPU 417H provides the computational overhead required for massive industrial plants. It is commonly deployed in power plants, oil refineries, chemical processing facilities, and airport baggage handling systems where uninterrupted operation is mandatory.

Technical Characteristics

• Work Memory: 4 MB total (2 MB for program / 2 MB for data)

• Load Memory: Expandable via Memory Card (RAM or FEPROM)

• Onboard Interfaces: 1x MPI/DP, 1x PROFIBUS DP, 2x Slots for Sync Modules

• Bit Performance: 0.03 µs (approximate execution time per binary instruction)

• Processing Tasks: Supports up to 16,384 digital and 1,024 analog I/O points

• Supply Voltage: 5V DC (via backplane bus)

• Current Consumption: 1.8 A (Typical) / 2.0 A (Maximum)

• Power Dissipation: 10 Watts (Typical)

• Dimensions: 50 mm width (single-slot) x 290 mm height x 219 mm depth

• Weight: 0.95 kg (Net) / 1.10 kg (Shipping)

• Dimentions:2.5 cm x 5.1 cm x 8.3 cm

Connectivity and Redundancy Features

The 6ES7417-4HL01-0AB0 features a sophisticated communication sub-system. It includes a dedicated MPI/DP port and a high-speed PROFIBUS DP interface for decentralized peripherals. Crucially, the module contains two specialized slots for fiber-optic synchronization modules. These modules facilitate the high-speed data link between the two redundant CPUs in an S7-400H rack, allowing for real-time synchronization of the operating states.

To safeguard critical process variables during power outages, the CPU supports external backup voltage (5V to 15V DC). The integrated diagnostics and hardware interrupts provide rapid response to system faults, ensuring that the plant operator has full visibility into the health of the automation layer. This unit is fully compatible with STEP 7 programming environments, allowing for the development of complex, fail-safe logic.