The Siemens 6ES5135-3KA31 is a 21-slot subrack engineered as the primary chassis for the Simatic S5-135U programmable logic controller system. This robust mechanical frame provides the necessary backplane architecture for high-speed data communication and power distribution across complex, multi-processor automation configurations. Designed for demanding industrial environments such as rolling mills and petrochemical processing, this chassis ensures structural integrity and reliable electrical connectivity for legacy S5-135U installations.
Features
21-slot capacity for high-density I/O and CPU module configurations.
Rugged aluminum frame designed to withstand industrial vibration and mechanical stress.
Integrated multi-layer backplane with gold-plated connector pins to ensure low-resistance signal paths and oxidation resistance.
Parallel bus architecture supporting multi-processor communication without data collisions.
Optimized for standard 19-inch rack mounting.
Shielded signal routing to maintain communication integrity in high-EMI environments.
Technical Specifications
Model
6ES5135-3KA31
Series
Simatic S5-135U
Slots
21
Logic Bus Supply
5 VDC / 18 A
Auxiliary Supply
24 VDC
Operating Temperature
0 to 55 deg C
Storage Temperature
-40 to 70 deg C
Mounting
19-inch Rack
Installation Guidelines
Ensure the subrack is securely mounted in a standard 19-inch industrial cabinet with adequate clearance for airflow.
Always disconnect all power sources from the rack before inserting or removing any CPU, I/O, or power supply modules to prevent electrical arcing or damage to the backplane pins.
Verify that the backplane connectors are free of dust and debris before module installation.
Ensure proper grounding of the chassis to the cabinet earth bus to mitigate electromagnetic interference.
Maintain ambient operating temperatures within the 0 to 55 deg C range to ensure long-term reliability of the backplane components.
FAQ
Is this chassis compatible with all S5-135U modules?
Yes, the 6ES5135-3KA31 is designed to house standard S5-135U modules. Please ensure your specific module configuration does not exceed the 18 A current limit of the 5 VDC bus.
Does this unit include a power supply?
No, this is the subrack chassis only. It requires a compatible Siemens S5-135U power supply module to be installed in the designated slot to provide the necessary system voltages.
