Siemens 6ES7400-0HR51-4AB0 S7-400H CPU 412-5H System Bundle
Item NO.: 3746488
Warranty: 1 year
Condition : brand new in factory sealed box
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Detail
- Product NameSiemens 6ES7400-0HR51-4AB0 S7-400H CPU 412-5H System Bundle
- Item NO.3746488
- Weight1.0000 kg = 2.2046 lb = 35.2740 oz
- CategoryPLC
- BrandSiemens
- Creation Time2026-08-25
- S7-400H CPU 412-5H System Bundle
6ES7400-0HR51-4AB0
S7-400H CPU 412-5H System Bundle · DC Version
Lifecycle Status: Active (PM300)
Key Information
6ES7400-0HR51-4AB0 is a Siemens SIMATIC S7-400H system bundle designed for building a redundant, high-availability automation system. It includes all core components required for an H-system with DC power supply. The bundle features two CPU 412-5H units that operate in a hot-standby configuration for automatic failover.
Order number 6ES7400-0HR51-4AB0 · Active Product
- • System bundle: Complete H-system for fault-tolerant applications
- • Power supply: DC 24/48/60 V
- • CPU: 2 x CPU 412-5H (5 interfaces: 1x MPI/DP, 1x DP, 1x PN, 2 for sync modules)
- • Redundancy: 4 x sync modules up to 10 m, 2 x sync cables 1 m
Functions
High Availability & Redundancy
- Hot-standby redundancy with automatic failover
- Real-time synchronization via dedicated sync modules
- Fault-tolerant operation for S7-400H and S7-400F/FH safety systems
- Seamless switchover in case of CPU failure
- Integrated HMI services for operator interface connectivity
Communication & Safety
- 5 integrated interfaces: MPI/DP, DP, PROFINET, 2 sync interfaces
- PROFINET port can replace CP443-1 for standard connectivity
- Safety option: Can be used as F-CPU in S7-400F/FH with F-runtime license
- Password protection for unauthorized program access
- Integrated communication: PG/OP and extended communication
Supports STEP 7 V5.5 SP2 with HF1 or higher
Specifications
Bundle Contents
- 1 x UR2-H rack (main rack for H-system)
- 2 x CPU 412-5H (redundant pair)
- 2 x PS 405 10A power supplies, DC 24/48/60 V
- 4 x sync modules (up to 10 m cable length)
- 2 x sync cables (1 m each)
- Memory cards: Not included, must be ordered separately
- Backup batteries: 4 required, not included
CPU 412-5H Specifications
- Work memory: 1 MB total (512 KB code / 512 KB data)
- Interfaces: 1x MPI/DP, 1x DP, 1x PROFINET, 2x sync module slots
- Protection: Password protection and key lock
- Diagnostics: Integrated system diagnostics
- RoHS compliant: Yes
IEC 61131-3 compliant · Suitable for safety-related applications with F-license
Installation
- Rack mounting: Install all components in the UR2-H rack provided. The H-system requires specific slot assignments; consult the S7-400H manual.
- Power supply installation: Install the two PS 405 10A power supplies in the designated slots. Connect to DC 24/48/60 V supply.
- CPU installation: Insert the two CPU 412-5H units. Connect sync modules via the dedicated sync interfaces.
- Sync module cabling: Connect sync modules using the supplied 1 m sync cables. Ensure cable length does not exceed 10 m per module.
- Memory cards: Insert memory cards (ordered separately) into each CPU. Required for program and data storage.
- Configuration: Use STEP 7 V5.5 SP2 with HF1 or higher. Configure H-system parameters using Hardware Configuration tool.
- Safety option: For F-system operation, install F-runtime license and use S7-400F/FH configuration.
Lifecycle
Status & Availability
- Lifecycle status: Active Product (PM300)
- Product family: CPU 412H
- Availability: Actively supported by Siemens, long-term availability assured
- RoHS compliant: Yes
- Country of origin: Germany
- ECCN: EAR99 / NLR
Replacement Information
DC version: 6ES7400-0HR51-4AB0 (DC power supply)
AC version: 6ES7400-0HR01-4AB0 (AC power supply)
CPU 412-5H order number: 6ES7412-5HK06-0AB0
Migration notes:
- • The CPU 412-5H includes a PROFINET port that can replace CP443-1
- • For S7-1500 migration, consult the S7-400H to S7-1500H migration guide
- • Full program porting to TIA Portal required for platform change
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Frequently Asked Questions
What is the difference between 6ES7400-0HR51-4AB0 and 6ES7400-0HR01-4AB0?
The 6ES7400-0HR51-4AB0 is the DC version of the S7-400H system bundle, using PS 405 power supplies (24/48/60 V DC). The 6ES7400-0HR01-4AB0 is the AC version using PS 407 power supplies (120/230 V AC).
What is included in this system bundle?
The bundle includes: 1 x UR2-H rack, 2 x CPU 412-5H, 2 x PS 405 10A DC power supplies, 4 x sync modules (up to 10 m), and 2 x sync cables (1 m). Memory cards and backup batteries must be ordered separately.
What programming software is required for this system?
Requires STEP 7 V5.5 SP2 with HF1 or higher. The S7-400H option package is needed for H-system configuration. For safety applications, the F-Configuration Pack is also required.
Can this CPU be used in safety-related applications?
Yes, the CPU 412-5H can be used as a fail-safe CPU in S7-400F/FH systems with the F-runtime license. It supports safety functions up to SIL 3.
Does the CPU 412-5H support PROFINET?
Yes, the CPU 412-5H includes an integrated PROFINET port that can be used for standard communication and can replace a CP443-1 in many applications.
Is this product still active and available?
Yes, this product is classified as Active (PM300 lifecycle status) and is fully supported by Siemens with long-term availability.
