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6AT1131-6DD21-0AB0

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Siemens 6AT1131-6DD21-0AB0 is a SIJECT CI16i control interface with an integrated CPU 314 for coordinating machine I/O, operator communication and sequence control.
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Technical specifications for 6AT1131-6DD21-0AB0

  • Manufacturer:
    Siemens
  • Part Number:
    6AT1131-6DD21-0AB0
  • Product Family:
    Siemens Simatic S7
  • Product Type:
    SIJECT CI16i Control Interface with Integrated CPU 314
  • Stock:
    1
  • SIJECT Series:
    SIJECT 16i
  • Supply Voltage:
    20.4 to 28.8 V DC
  • Power Consumption:
    20 to 35 W
  • Digital Inputs:
    31
  • High-Speed Counters:
    1
  • Digital Outputs:
    40
  • Current per Output:
    2 A
  • Thermocouple Inputs:
    8, 16-bit
  • Linear Scale Inputs:
    4, 1 kΩ to 10 kΩ, 12-bit
  • Analog Outputs:
    4, ±10 V, 12-bit
  • Valve Current Outputs:
    2
  • Operator Panel Interfaces:
    1
  • MPI Interfaces:
    1
  • P_BUS Interfaces:
    1
  • PROFIBUS-DP Interface:
    Not fitted on CI16i
  • Load Memory:
    256 KB
  • Work Memory:
    163 KB
  • Timers:
    128
  • Counters:
    64
  • Operating Temperature:
    0 to +50 °C
  • Transport Temperature:
    -40 to +70 °C
  • Storage Temperature:
    -20 to +55 °C
  • Relative Humidity:
    5 to 95%, no condensation
  • Ingress Protection:
    IP20
  • Weight:
    13.2277 lbs (6 kg)
  • Estimated shipping dimensions:
    39x28.8x8.45cm
  • Tariff Code:
    85371091
  • Country of origin:
    China
  • 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 I/O Structure Control Links Power & Wiring Setup Checks

Features:

  • The SIJECT CI16i assembly combines the control interface and CPU 314 in one unit.
  • Separate field paths handle digital, temperature, linear-scale and analog signals.
  • Operator-panel, MPI and P_BUS connections separate operating, engineering and system communication.
The integrated controller executes the stored STEP 7 program while its assigned inputs supply the machine state used by that logic.

Output groups carry the resulting commands to digital loads, analog devices and proportional-valve channels through their dedicated connectors.

Connector identity, channel assignment and project data must remain aligned when the complete SIJECT control interface is installed or exchanged.

The Siemens 6AT1131-6DD21-0AB0 SIJECT CI16i Control Interface with Integrated CPU 314 may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6AT1131-6DD21-0AB0 SIJECT CI16i Control Interface 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.

How field signals move through the CI16i

  • Digital inputs: Machine-state contacts enter grouped input circuits before the CPU program evaluates them.
  • Temperature channels: Thermocouple inputs keep temperature acquisition separate from ordinary contact signals.
  • Position feedback: Linear-scale inputs convert the connected resistive position signals for controller use.
  • Output paths: Digital, voltage and valve-current outputs send different command types to their assigned loads.

Separate connections for operation and engineering

  • Operator panel: The dedicated panel connection carries the local operating interface for the SIJECT machine.
  • MPI: The MPI path supports controller engineering and communication with the assigned automation nodes.
  • P_BUS: The system-bus connection links the control interface to the documented SIJECT control arrangement.
  • Path isolation: Troubleshooting should identify which link failed before addresses or controller parameters are changed.

Power distribution and connector discipline

  • Supply entry: The 24 V DC source feeds the integrated CPU, communication circuits and local I/O electronics.
  • Load separation: Field-output wiring must follow the assigned connector and return path rather than sharing an unverified common.
  • Signal classes: Thermocouple, scale and analog wiring should remain separated from switched output conductors.
  • Cabinet checks: Clearance, connector seating and documented environmental limits apply to the complete control interface.

Commissioning checks before machine release

  • Project match: Load only the approved STEP 7 project for the installed CPU and assigned SIJECT machine.
  • I/O map: Compare every channel assignment with the physical connector and the connected field device.
  • Network settings: Confirm the operator-panel, MPI and P_BUS addresses before communication testing.
  • Functional sequence: Test sensing, program response and each affected output path before normal operation.
Description
Siemens 6AT1131-6DD21-0AB0 is a SIJECT CI16i control interface that combines an integrated CPU 314 with the field-I/O and communication functions used by the SIJECT 16i control system.

Field devices connect to 6AT1131-6DD21-0AB0 through separate digital, thermocouple, linear-scale and analog paths. The CPU processes those signals and returns digital, voltage or proportional-valve outputs to the machine, keeping sensing and actuation within the same control assembly.

An operator panel, MPI connection and P_BUS interface give 6AT1131-6DD21-0AB0 distinct paths for operation, engineering and system communication. STEP 7 configuration defines the CPU program and assigned I/O behavior, while the multimedia card slot retains the applicable project data.

Power enters 6AT1131-6DD21-0AB0 as 24 V DC for the integrated control and I/O circuits. Installation must preserve the documented connector assignments, cabinet clearance and environmental limits so the CPU, communication interfaces and field channels operate as one SIJECT assembly.
Alternative Names
6AT11316DD210AB0 6AT1131 6DD21 0AB0 6AT 1131 6DD21 0AB0 Siemens 6AT1131-6DD21-0AB0 6AT1131-6DD21-0AB0 SIJECT CI16i 6AT1131-6DD21-0AB0 Control Interface 6ATI131-6DD21-0AB0 6AT1131-6DD2I-0AB0
Technical notes
For Siemens 6AT1131-6DD21-0AB0, preserve the approved STEP 7 project, connector assignments and SIJECT field wiring before replacement or commissioning.
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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.
How can I confirm that 6AT1131-6DD21-0AB0 is the required SIJECT assembly?
Match 6AT1131-6DD21-0AB0 character by character, then confirm the CI16i designation, integrated CPU 314 and 24 V DC supply.
What must be checked before applying 24 V DC to 6AT1131-6DD21-0AB0?
Before powering 6AT1131-6DD21-0AB0, verify polarity, the 20.4 to 28.8 V DC range, connector assignment and absence of field-wiring shorts.
Why can one field signal fail while 6AT1131-6DD21-0AB0 still runs?
Because 6AT1131-6DD21-0AB0 separates digital, thermocouple, linear-scale and analog paths, trace the affected channel group, connector and configuration independently.
Which project records should be preserved before exchanging 6AT1131-6DD21-0AB0?
Preserve the 6AT1131-6DD21-0AB0 STEP 7 project, CPU parameters, I/O assignments, network settings and multimedia-card contents before removal.
Where should diagnosis begin if operator communication to 6AT1131-6DD21-0AB0 is lost?
For 6AT1131-6DD21-0AB0, distinguish the operator-panel, MPI and P_BUS paths, then check the connector, addressing and matching configuration for that path.
Can 6AT1131-6DD21-0AB0 be selected by the CI16i name without the full suffix?
No. The complete 6AT1131-6DD21-0AB0 article number is required because the suffix identifies the documented SIJECT CI16i execution.