Siemens 6ES5304-3UA11 Interface Module

The 6ES5304-3UA11 serves as an interface module for SIMATIC S5 expansion units. This unit connects the central controller to remote I/O racks. Its rectangular frame measures 232 millimeters in width. The module height reaches 210 millimeters exactly. Depth stays at 155 millimeters. You will find this unit weighs approximately 0.75 kilograms. Therefore, installation requires sliding the module into a standard S5 rack slot. One 20-pin front connector handles all wiring connections.

Physical Layout and Connectors

The front connector accepts wires up to 16 AWG gauge. A green LED indicates power present on the module. Two guide rails secure the module firmly in the rack. Four status LEDs show communication activity and error conditions. You can remove the front connector without disconnecting the module from the backplane.

Technical Specifications

Parameter	Specification
Module Width	232 mm
Module Height	210 mm
Module Depth	155 mm
Unit Weight	0.75 kg
Expansion Ports	2 (bidirectional)
Front Connector	1 x 20-pin (16 AWG)
Component Total	186 discrete parts
Transmission Speed	187.5 kbps
Cable Length	100 meters max
Isolation Voltage	1500V (optocoupler)
Internal Energy Storage	470 µF capacitor bank
Protocol	SINEC L1
Operating Temperature	0°C to +55°C

Internal Design and Energy Storage

The 6ES5304-3UA11 contains exactly 186 discrete components onboard. A 470 microfarad capacitor bank filters the internal logic supply voltage. Dual communication controllers handle data transmission on each port. The module includes galvanic isolation for all signal paths. LED indicators show receive and transmit activity. A dedicated processor manages the protocol timing.

Operational Performance

This interface module connects the S5 CPU to expansion racks. It transmits I/O data between the central and remote stations. Moreover, the unit supports daisy-chaining of multiple expansion units. You can place expansion racks up to 100 meters away. The module automatically retransmits data on communication errors. Four LEDs show activity and error status clearly. Consequently, you achieve reliable I/O expansion for S5 systems. Siemens designed this module for distributed automation applications. Its robust design suits factory floor installations.

In summary, the 6ES5304-3UA11 delivers reliable expansion coupling. Use this module for adding remote I/O racks to S5 systems. It simplifies system expansion without complex wiring. Order this interface module for your Siemens SIMATIC S5 system.