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6ES5430-7LA12

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The Siemens 6ES5430-7LA12 is a 32-channel, optically isolated digital input module designed for the SIMATIC S5-115U, S5-115H, and S5-115F controller architectures. It converts 24 V DC field signals into internal CPU logic levels.
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Technical specifications for 6ES5430-7LA12

  • Manufacturer:
    Siemens
  • Part Number:
    6ES5430-7LA12
  • Product Family:
    Siemens Simatic S5
  • Product Type:
    Digital Input Module
  • Stock:
    1
  • Number of inputs:
    32 inputs
  • Galvanic isolation:
    optocoupler isolation
  • Isolation grouping:
    In groups of 8 channels
  • Rated input voltage:
    24 V DC
  • Voltage range for signal 0:
    -30 V to +5 V
  • Voltage range for signal 1:
    +13 V to +30 V
  • Typical input current at signal 1:
    8.5 mA
  • Signal propagation delay (0 to 1):
    2.2 ms to 4.6 ms
  • Signal propagation delay (1 to 0):
    4.5 ms to 12 ms
  • Permissible load factor at 55 °C:
    100%
  • Maximum unshielded cable length:
    600 m (1968 ft)
  • Maximum shielded cable length:
    1000 m (3280 ft)
  • Insulation voltage rating:
    In accordance with VDE 0160
  • Insulation test voltage:
    500 V AC
  • Internal 5 V backplane current consumption:
    Max. 5 mA
  • Typical power dissipation under rated operation:
    6.5 W
  • Required front connector:
    46-pin
  • Weight:
    0.7 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications System Integration Monitoring & Control Configuration & Programming

Features:

  • 32 high-density digital input channels for 24 V DC system interfacing.
  • Grouped optocoupler isolation protecting internal electronics from noise.
  • Front-panel LED arrays for instantaneous channel status identification.
Siemens 6ES5430-7LA12 serves as a compact digital input interface for SIMATIC S5 controller architectures.

The module detects binary states from field contacts and processes them for the central processing unit.

Installs into S5-115 series subracks and uses a dedicated 46-pin front terminal block for field wiring.

The Siemens 6ES5430-7LA12 is available in new, used, or refurbished condition supplied by Apter Power or verified third-party suppliers, and is not distributed directly by the manufacturer (OEM).
Siemens 6ES5430-7LA12 Manuals, Datasheets, Link 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.
  • Interfacing emergency stop circuitry and protective guard interlocks in industrial cells.
  • Reading binary feedback from motor starters, contactors, and automatic circuit breakers.
  • Connecting optical light curtains and two-hand control stations in safety installations.
  • Draws logic operating power directly from the central S5 backplane bus without external 5V supply.
  • Supports extended field wiring distances using standard shielded or unshielded multi-core cables.
  • Exchanges parallel binary data directly with the CPU process image during cycle updating.
  • Monitors real-time binary status from active sensors and transfers state data to PLC memory.
  • Provides continuous channel-level signal tracking via front-panel LED indicators.
  • Enables CPU execution of automated sequence control based on field contact feedback.
  • Front connector features a swing-out design to simplify wiring replacement during maintenance.
  • Equipped with physical coding keys to prevent accidental insertion of wrong module types.
  • Compact single-slot width enables high I/O density inside space-restricted control cabinets.
Description
Siemens 6ES5430-7LA12 digital input module converts external binary signals from field process devices into the internal signal level of SIMATIC S5 programmable logic controllers. Designed for standard 24 V DC control environments, it captures real-time status signals from limit switches, pushbuttons, position sensors, and auxiliary contacts across factory systems. It ensures fast and accurate signal processing for high-speed automated machine operations.

Integrating 32 discrete digital input channels into a single chassis slot, the Siemens 6ES5430-7LA12 features optocoupler galvanic isolation organized across four independent 8-channel groups. This electrical separation protects internal logic circuits against ground loops, electrical noise, and high-voltage surges from field wiring. The front panel includes dedicated green LED status indicators that provide instantaneous visual diagnostics for every active signal channel.

Engineered for demanding industrial automation setups and safety-related architectures (S5-115F), the Siemens 6ES5430-7LA12 plays a key role in monitoring safety interlocks, processing feedback, and maintaining machine operations. It mounts directly into S5-115U, S5-115H, and S5-115F subracks, and can also be integrated into S5-135U or S5-155U expansion racks using standard module adapter casings.
Alternative Names
6ES5 430-7LA12 6ES5-430-7LA12 6ES54307LA12 6ES5 430 7LA12 6ES5420-7LA12 6ES5420-7LA11 Simatic S5 6ES5430-7LA12 Siemens 6ES5430-7LA12
Technical notes
The Siemens 6ES5430-7LA12 connects to field wiring via a removable 46-pin front connector and provides designated insert strips next to the status LEDs for precise channel labeling.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Which front connector block is needed for the Siemens 6ES5430-7LA12?
Wiring the Siemens 6ES5430-7LA12 requires a removable 46-pin front connector.
How are individual input points identified on the Siemens 6ES5430-7LA12?
Designated labeling areas directly adjacent to the status LEDs on the Siemens 6ES5430-7LA12 allow custom identification strips to be inserted.
How do operators monitor channel states on the Siemens 6ES5430-7LA12?
Green LED indicators located on the front panel of the Siemens 6ES5430-7LA12 illuminate whenever a logic 1 signal is present on a channel.
Can the Siemens 6ES5430-7LA12 be deployed in safety-critical applications?
Yes, official specifications certify the Siemens 6ES5430-7LA12 for safety-related input processing (Type 1, 2, and 3 configurations) in S5-115F safety systems.
Which controller subracks natively accept the Siemens 6ES5430-7LA12?
The Siemens 6ES5430-7LA12 installs natively into SIMATIC S5-115U, S5-115H, and S5-115F racks.
How can I request pricing for the Siemens 6ES5430-7LA12?
You can submit an inquiry through our sales team to receive a competitive quote, confirm current stock levels, or request technical datasheets for the Siemens 6ES5430-7LA12.

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