Features:
- Receives sixteen isolated digital inputs in the 24–60 V DC class.
- Supports S5-135U and S5-155U rack installations.
- Provides a typical 3 ms input delay for established discrete signals.
The 4UA12 suffix identifies the voltage and isolation execution of the 431 module. A neighboring 431 order code can use different electrical limits or front-connector assignments.
Its purpose is to translate sixteen external switch states into the binary process image read by the legacy S5 control program.
Archive the rack address and label every front-connector wire before removal. Recheck the enable path and field voltage with the connector unplugged before energizing a spare.
6ES5431-4UA12 is sourced as the isolated 24–60 V input execution for the documented S5 rack.
Verified resources for Siemens 6ES5431-4UA12:
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Read isolated limit switches and interlocks carrying higher DC control voltages.
- Preserve sixteen discrete machine inputs during maintenance of an S5-135U station.
- Interface legacy 24–60 V devices with the S5-155U binary process image.
- Assign the sixteen input bits to the same process-image addresses used by the S5 program.
- Trace interlock and alarm references before changing the module or rack configuration.
- Force testing should follow the approved program procedure with outputs held in a safe state.
- Measure the field voltage on every conductor because the module accepts a broad 24–60 V DC class.
- Do not plug or unplug the front connector while energized field sources remain present.
- Preserve isolation between channels when routing commons and test equipment.
- Sixteen inputs occupy a 20 mm module width in the S5 rack.
- Typical 5 V backplane demand is 90 mA and belongs in the rack power calculation.
- Power dissipation varies with the energized input population and field voltage.