Siemens 6ES5482-7LF31 Digital I/O Module

The 6ES5482-7LF31 combines digital input and output functions in a single module. This unit reads sensor signals and controls actuators for SIMATIC S5 systems. 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 0.92 kilograms. Therefore, installation requires sliding the module into a standard S5 rack slot. Two 20-pin front connectors handle all field wiring connections.

Physical Layout and Connectors

Each front connector accepts wires up to 16 AWG gauge. The upper connector handles input wiring for all channels. The lower connector provides output connections for actuators. Green LEDs illuminate when each input channel receives a signal. Yellow LEDs show status for each output channel. Two guide rails secure the module firmly in the rack.

Technical Specifications

Parameter	Specification
Module Width	232 mm
Module Height	210 mm
Module Depth	155 mm
Unit Weight	0.92 kg
Digital Inputs	16 (24V DC sinking)
Digital Outputs	16 (transistor, 0.5A each)
Front Connectors	2 x 20-pin (16 AWG)
Component Total	342 discrete parts
Input Voltage Range	20.4–28.8V DC
Input Current	7 mA per channel
Output Voltage	24V DC (sourcing)
Output Current	0.5A continuous per channel
Response Time	2 ms (inputs), 1 ms (outputs)
Input Isolation	1500V (optocoupler)
Internal Energy Storage	1000 µF capacitor bank
Operating Temperature	0°C to +55°C

Internal Design and Energy Storage

The 6ES5482-7LF31 contains exactly 342 discrete components onboard. A 1000 microfarad capacitor bank filters the internal logic supply voltage. Sixteen optocouplers provide isolation for every input channel. Sixteen power MOSFETs handle the output switching duties. Each MOSFET includes built-in overcurrent protection. The module also includes LED drivers for the 32 status indicators.

Operational Performance

This digital I/O module reads 16 inputs from sensors and pushbuttons. It switches 16 transistor outputs to control relays and solenoids. Moreover, the module saves rack space by combining I/O functions. You can connect limit switches, LEDs, and small actuators directly. The unit filters electrical noise with built-in debounce circuitry. Thirty-two LEDs show real-time input and output status at a glance. Consequently, you achieve high-density mixed I/O for S5 systems. Siemens designed this module for SIMATIC S5 automation platforms. Its conformal coating protects against humidity and light contamination.

In summary, the 6ES5482-7LF31 delivers versatile digital I/O functionality. Use this module for factory automation or conveyor systems. It provides 32 total points in a single slot design. Order this digital I/O module for your Siemens S5 system expansion.