Siemens 6ES5456-4UB11 Digital Output Module

The 6ES5456-4UB11 provides 16 digital output channels for SIMATIC S5 systems. This module switches DC loads directly from your control logic. 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 0.95 kilograms. Therefore, installation requires sliding the module into a standard S5 rack slot. One 20-pin front connector handles all field wiring connections.

Physical Layout and Connectors

The front connector accepts wires up to 16 AWG gauge. Each channel uses two terminals for load and common return paths. A green LED illuminates when each output channel activates. Two guide rails secure the module firmly in the rack. 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	0.95 kg
Output Channels	16 (transistor, sourcing)
Front Connector	1 x 20-pin (16 AWG)
Component Total	312 discrete parts
Output Voltage	24V DC (20.4–28.8V range)
Output Current	0.5A per channel (max)
Total Current	8A (all channels combined)
Protection	Short circuit and thermal
Response Time	0.5 ms (on/off)
Output Isolation	1500V (optocoupler)
Internal Energy Storage	820 µF capacitor bank
Operating Temperature	0°C to +55°C

Internal Design and Energy Storage

The 6ES5456-4UB11 contains exactly 312 discrete components onboard. An 820 microfarad capacitor bank filters the internal logic supply voltage. Sixteen power MOSFETs perform the actual output switching duties. Each MOSFET includes built-in overcurrent and thermal protection. Individual optocouplers isolate the logic side from field power. The module also includes LED drivers for the 16 status indicators.

Operational Performance

This digital output module sources 24V DC to field devices like relays. It handles up to 0.5 amperes per channel continuously. Moreover, the module provides short circuit protection on every output. You can connect solenoids, contactors, and indicator LEDs directly. The unit reports overload faults back to the PLC processor. Sixteen green LEDs show real-time output states at a glance. Consequently, you achieve reliable high-density control for industrial equipment. Siemens designed this module for SIMATIC S5 automation platforms. Its conformal coating resists humidity and light contamination.

In summary, the 6ES5456-4UB11 delivers robust digital output control. Use this module for machine automation or conveyor systems. It provides 16 output points in a single slot design. Order this digital output module for your Siemens S5 system.