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Siemens 6ES7138-4FA04-0AB0
Siemens 6ES7138-4FA04-0AB0
Siemens 6ES7138-4FA04-0AB0
Siemens 6ES7138-4FA04-0AB0
Siemens 6ES7138-4FA04-0AB0
Siemens 6ES7138-4FA04-0AB0
· Product image is representative; revision or series may vary. Contact us to request a specific version.

6ES7138-4FA04-0AB0

PROFIsafe Digital Input Module

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PRODUCT DESCRIPTION

Evaluate safety inputs with selectable single-channel or paired sensing

Siemens 6ES7138-4FA04-0AB0 is an ET 200S fail-safe digital input module for 24 V DC signals. It provides eight single-channel inputs or four evaluated input pairs, with two protected sensor supplies and configurable monitoring for the connected safety sensors.

The module acquires signals from switches and suitable three- or four-wire proximity sensors within a PROFIsafe installation. Input filtering, discrepancy evaluation and sensor-supply selection are configured for the actual circuit; the achievable safety level depends on the sensor arrangement, wiring and validated safety function.
ACTUAL APPLICATIONS

Industrial Production and Service Sectors

These industry examples describe Siemens' broader market coverage, not verified installations of this exact product. Product suitability depends on the documented configuration and engineering requirements.
  • 01 · WATER & WASTEWATER

    Desalination and Water Distribution

    Seawater desalination for additional freshwater supply within water utilities.Drinking water distribution through networks serving public supply needs.
  • 02 · FOOD & BEVERAGE

    Dairy, Bakery and Confectionery

    Dairy production and processing within the commercial food industry.Bakery and confectionery manufacturing across diverse consumer food categories.
  • 03 · PACKAGING

    Pharmaceutical and Non-food Packaging

    Pharmaceutical product packaging within the medicines and healthcare sector.Non-food product packaging across consumer goods and industrial markets.

Technical specifications for 6ES7138-4FA04-0AB0

  • Product Model
    6ES7138-4FA04-0AB0
  • Product Parameters
    PROFIsafe Digital Input Module
  • Manufacturer
    Siemens
  • Input arrangement
    8 single-channel inputs or 4 dual-channel evaluated pairs
  • Rated module supply
    24 V DC; permissible 20.4-28.8 V DC; no reverse-polarity protection
  • Supported sensors
    Switches and 3/4-wire proximity sensors; 2-wire proximity sensors are not supported
  • Input logic levels
    Signal 0: -30 to +5 V; signal 1: +15 to +30 V
  • Input characteristic
    IEC 61131 Type 1; typical signal-1 input current 3.7 mA
  • Input-delay settings
    0.5, 3 or 15 ms for all inputs; default 3 ms; delay-dependent shielding and minimum-pulse conditions apply
  • Sensor-power outputs
    2 short-circuit-protected outputs, each 300 mA; total 600 mA; minimum loaded voltage L+ minus 1.5 V
  • Sensor evaluation
    1oo1 or 1oo2; equivalent or nonequivalent dual-channel connections are configurable
  • Discrepancy monitoring
    10-30,000 ms for paired inputs; last-valid-value or zero-value response; selected time affects response assessment
  • I/O address allocation
    6 input bytes and 4 output bytes; only documented useful-data addresses may be accessed
  • PROFIsafe destination address
    1-1022; physical DIP address must match the engineering project and uniqueness rules
  • F monitoring time
    10-10,000 ms; default 150 ms
  • Signal-cable limit
    Maximum 200 m; 0.5 ms filtering requires shielded sensor/input cables; 3 ms shielding is required where surge exposure is possible
  • Module power dissipation
    Typical 4 W
  • Diagnostic indications
    SF group fault, individual input status and separate Vs1/Vs2 sensor-supply fault indicators; not safety-function signals
View all additional
SYSTEM & REPLACEMENT CHECK

Information needed before ordering

Three direct checks to secure your system integration and minimize ordering risks.

Information

System integration Replacement check Manuals & support
ET 200S FAIL-SAFE INPUT ACQUISITION

Build the input evaluation around the actual sensor circuit

The FA04 brings switch and proximity-sensor states into a supported ET 200S safety station. Decide whether each process variable uses single-channel acquisition or a paired 1oo2 evaluation before allocating the available inputs. The documented eight-input and four-pair arrangements are different safety configurations, not eight channels with an unconditional SIL 3 rating. Match the power-module combination and qualified sensors to the required function.
Treat the two sensor supplies and the short-circuit test as part of the circuit design. Each supply serves four inputs and provides up to 300 mA; internal supply is required for the cyclic short-circuit test. Pair mapping, equivalent or nonequivalent contacts and external supply choices determine which faults can be detected. Preserve the original wiring requirements instead of selecting parameters merely to suppress diagnostics.
Set filtering and discrepancy behavior against the process response budget. A longer discrepancy interval can retain an earlier valid input state, while the zero-value option behaves differently. The 0.5 ms filter requires shielding, and the minimum sensor pulse is longer than the nominal filter setting. Validate the complete signal path, including the safety-program cycle and reintegration logic, before releasing the station.

Features:

  • Channel-pair and contact evaluation
  • Sensor-supply and test coordination
  • Response-time-aware parameter selection
The Siemens 6ES7138-4FA04-0AB0 requires the documented hardware configuration, installation conditions and interface arrangement to be verified before system integration and commissioning.
INTERCHANGEABILITY

Verify the complete replacement identity before commissioning

Record the full FA04 order number and the installed terminal arrangement before selecting a spare. Compare the maintained station project with the supplied hardware rather than assuming that an earlier FA02/FA03 or later FA05 shares every capability. In particular, the 2008 power-module table distinguishes FA04 from its predecessors, while the later FA05 documentation introduces additional functions that must not be attributed to FA04.
Preserve the physical PROFIsafe destination address and confirm its agreement with the engineering configuration before insertion. Re-establish the actual channel-pair mapping, sensor-power choice, input filter and discrepancy parameters. A mechanically fitting module does not resolve a mismatched project or sensor circuit. Keep the process in its approved maintenance state while the resulting communication fault and any existing channel faults are investigated.
After the fault is corrected, use the prescribed acknowledgment and reintegration sequence in the safety program. If a zero-signal test is configured for discrepancy recovery, its condition must be satisfied before those channels return. Revalidate sensor operation and the full safety response, then document the repair. Diagnostic LEDs assist troubleshooting but are not safety-function outputs or independent evidence that the installation is safe.

Features:

  • FA04-specific spare and project identity
  • Preserved address and sensor configuration
  • Discrepancy recovery and revalidation
The Siemens 6ES7138-4FA04-0AB0 requires replacement verification based on its complete order number, installed hardware, signal configuration and project documentation.
DOCUMENTATION STATUS

Browse the Manuals, Datasheets, Official Documents, Links

Important Notice: Official documents are provided through manufacturer links. Accessories, manuals, cables, calibration data, software, certificates, and other items are not included with this equipment unless listed in the stock item description.

Features:

  • Exact-model source editions and applicable product information
  • Product data sheet and selected original manufacturer pages
  • Accessories and supplied documentation follow the written quotation
Documentation for the Siemens 6ES7138-4FA04-0AB0 provides product references with source editions identified. Installation instructions are not included in this reference package . Confirm supplied hardware and the approved project documentation before maintenance.

Important notice

Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION

Commercial terms without hidden steps

Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
  • 01

    Shipping & delivery

    Dispatch
    Eligible stock: same / next day
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    Ship from
    Xiamen, China
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  • 02

    Payment & customs

    Payment
    Bank transfer (T/T)
    Currencies
    USD · EUR · GBP · RMB
    Credit cards
    Not accepted
    HS reference
    8538900000
    Origin
    Confirm supplied-unit origin
  • 03

    Warranty & returns

    Warranty
    12 months from AMIKON
    Inspection
    Label, condition and packing checks
    Returns
    Prior RMA authorisation required
    Compatibility
    Confirm before order
    OEM warranty
    Does not apply
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
  • Part checked

    Full suffix recorded
  • Condition checked

    Label and appearance
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  • Tracking supplied

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  • Sandy Lin

    Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS

Questions buyers ask about 6ES7138-4FA04-0AB0

Direct answers about identity, compatibility, stock, warranty, payment and shipping.
  • Does FA04 provide eight independent SIL 3 inputs?

    No. The documented arrangement is eight single-channel inputs for the applicable SIL 2 configuration or four evaluated input pairs for the applicable SIL 3 configuration. Category 4 requires the specified paired-sensor connection, internal sensor supply and short-circuit testing; sensor quality and the complete safety design remain decisive.
  • Can two-wire proximity sensors be connected directly?

    No. Siemens lists switches and suitable three- or four-wire proximity sensors for this module and explicitly excludes two-wire proximity switches. Check each sensor output, power-supply method and required signal duration against the exact FA04 documentation before approving the connection.
  • What is the consequence of keeping the last valid value during discrepancy?

    The previous valid input state remains available while the discrepancy interval runs. This can extend the sensor-to-actuator response time by approximately that interval. Siemens also provides a zero-value response; the chosen behavior and shortest practicable discrepancy time must be assessed against the required safety response.
  • Why can short-circuit diagnostics appear on four unused channels?

    With short-circuit testing enabled, using only one internal sensor supply can produce M-short-circuit diagnostics for the four channels belonging to the unused supply. Check the channel grouping, intended sensor-supply configuration and actual wiring against the original instructions; do not simply bypass the safety test to remove an alarm.
  • Does selecting a 0.5 ms input delay allow any cable arrangement?

    No. The 0.5 ms setting requires shielded cables for both digital inputs and sensor supplies. At 3 ms, Siemens also requires shielding where signal-line overvoltage is possible. The minimum detectable pulse depends on filtering and short-circuit-test settings, so filter delay alone is not the complete response time.
  • How is the input module returned to service after replacement?

    Preserve the PROFIsafe DIP address and confirm that it matches HW Config. Replacement causes a communication error that must be acknowledged through the safety program. Verify sensor evaluation, discrepancy behavior and fault-clearing conditions, then revalidate the safety function and record the maintenance result.
  • Is FA05 documentation interchangeable with the FA04 manual?

    No. The 2013 manual introduces FA05-specific functions, including firmware updating and identification/maintenance data, whereas the FA04 belongs to the earlier exact-model scope. Use the FA04 technical data and applicable original manual, and verify any proposed substitution separately against the installed project.
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