Siemens 6ES5302-3KA11 Interface Module

The Siemens 6ES5302-3KA11 interface module connects SIMATIC S5 controllers to external I/O systems. This module handles data exchange between the CPU and remote racks. It mounts directly into any S5-115U or S5-135U rack slot. You can use this module as a direct replacement for failed communication units.

Detailed Technical Specifications

The Siemens 6ES5302-3KA11 interface module measures 250 mm in length. Its width reaches 160 mm across the main body. The total height goes up to 45 mm with all components installed. This unit weighs approximately 0.58 kilograms for secure mounting.

Key hardware parameters include:

Complete Model: Siemens 6ES5302-3KA11
Component count: 96 individual electronic parts
Connector ports: One 20-pin screw terminal block
Energy storage: Five aluminum capacitors (100 µF each)
Mounting system: Two rear locking levers
PCB layers: Six-layer industrial construction
Communication protocol: SINEC L1 (field bus)
Transmission rate: 9.6 kbps or 19.2 kbps selectable
Cable length: Up to 1000 meters maximum
Nodes per network: Up to 32 stations
Isolation: Optical between CPU and field bus
Indicators: Two LEDs for transmit and receive
Power supply: 5 V DC from backplane, 24 V DC external

The Siemens 6ES5302-3KA11 interface module stores moderate residual charge after power-off. Therefore, technicians must wait thirty seconds before handling the module. The module supports both master and slave configurations. Moreover, it includes automatic baud rate detection for simplified setup.

Technical Parameter	Specification
Full Model Number	Siemens 6ES5302-3KA11
Dimensions (LxWxH)	250 mm x 160 mm x 45 mm
Weight	0.58 kg
Total Components	96 units
Connector Ports	1 x 20-pin screw terminal
Energy Storage Caps	5 x 100 µF (aluminum)
Communication Protocol	SINEC L1
Transmission Rate	9.6 / 19.2 kbps
Max Cable Length	1000 meters
Nodes Per Network	Up to 32 stations
Isolation Type	Optical
Indicators	2 LEDs (Tx/Rx)
Operating Temperature	0°C to +60°C
Humidity Tolerance	5% to 85% non-condensing

Application and Installation

The Siemens 6ES5302-3KA11 interface module slots into any S5 rack alongside the CPU. It requires an external 24 V DC supply for field bus operation. This module connects remote I/O racks and distributed devices to the central controller. Consequently, you can place I/O equipment far from the main control cabinet.

Network Communication and Reliability

This module handles token-passing bus arbitration for deterministic communication. The Siemens 6ES5302-3KA11 includes error checking and automatic retransmission for noisy environments. You configure the module using DIP switches for station address and baud rate. Therefore, setting up a SINEC L1 network requires no programming software.

Always power down the rack before inserting or removing this module. Wire the field bus cable using shielded twisted-pair conductors. The module features LED indicators for power, communication, and error status. Furthermore, its conformal coating protects against dust and light moisture.