The Siemens 6ES5701-3LH11 is an 8-slot subrack expansion frame designed for the SIMATIC S5-115H programmable logic controller system. This chassis provides the necessary hardware infrastructure for scaling I/O capacity in fault-tolerant, high-availability industrial environments. By enabling localized backplane extensions, this unit supports the redundant architecture required for critical process control applications, including thermal power generation and chemical processing, ensuring consistent signal integrity and system reliability.
Features
8-Slot Capacity: Provides eight dedicated slots for standard Simatic S5 modules, including digital, analog, and communication cards.
Fault-Tolerant Support: Specifically engineered to integrate with S5-115H redundant controller configurations, facilitating cross-coupling and synchronized I/O processing.
Robust Mechanical Design: Built for industrial environments with reinforced connector slots to maintain stable electrical contact under high-vibration conditions.
Passive Backplane: Utilizes a rigid, high-speed parallel backplane bus to minimize latency and ensure deterministic data transmission between modules.
Technical Specifications
Model
6ES5701-3LH11
Product Family
Simatic S5-115H
Component Type
8-Slot Expansion Frame
Operating Temperature
0 to 60 deg C
Storage Temperature
-40 to 70 deg C
Cooling Method
Natural convection
Relative Humidity
95 percent non-condensing max
Installation Guidelines
Mounting: Ensure the subrack is securely mounted within a standard industrial enclosure or cabinet, providing sufficient clearance for natural convection cooling.
Grounding: Maintain a low-impedance ground connection to the chassis to ensure electromagnetic compatibility and protection against electrical noise.
Module Insertion: Always power down the system before inserting or removing modules to prevent electrical arcing or damage to the backplane pins.
Cable Routing: Route signal cables away from high-voltage power lines and high-EMI sources to maintain signal integrity across the expansion bus.
FAQ
Is this expansion frame compatible with standard S5-115U systems?
The 6ES5701-3LH11 is specifically optimized for the S5-115H fault-tolerant series. While it shares physical characteristics with other S5 components, it is intended for use in S5-115H redundant architectures.
Does this unit require external power?
The unit acts as a passive expansion frame; power is typically distributed through the backplane from the associated power supply module installed within the rack configuration.
