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6ES7231-5QD32-0XB0

Thermocouple analog input module

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Technical specifications for 6ES7231-5QD32-0XB0

  • Product Model
    6ES7231-5QD32-0XB0
  • Spare Model
    SM 1231 TC 4 AI
  • Product Parameters
    Thermocouple analog input module
  • Tariff Code
    85389091
  • Country of origin
    China
  • Place of shipment
    Xiamen, China
  • In stock
    1 unit
  • Estimated Shipping Size
    4.5 x 10.0 x 7.5 cm
  • Manufacturer
    Siemens
  • Weight
    0.16 kg
  • Module type
    SM 1231 TC
  • Input channels
    4 thermocouple inputs
  • Temperature resolution
    0.1 °C / 0.1 °F
  • Voltage resolution
    15 bit plus sign
  • Power dissipation
    1.5 W
  • Backplane current
    80 mA
  • External 24 V current
    40 mA
  • Maximum cable length
    100 m
  • Dimensions
    45 x 100 x 75 mm
  • Net weight
    0.160 kg

Description

Siemens 6ES7231-5QD32-0XB0 is a SIMATIC S7-1200 SM 1231 thermocouple analog input module with four input channels and 16-bit thermocouple conversion.
The module supports configurable thermocouple measurement, diagnostics and noise rejection. Confirm sensor type, compensation method, wiring polarity, firmware support and the complete order number before installation.

Information

Overview Manuals Product Applications Compatibility Lifecycle & Replacement

Features:

  • Four thermocouple input channels
  • 16-bit thermocouple conversion
  • 0.1 °C or 0.1 °F temperature resolution
  • Configurable diagnostics and noise rejection
  • 100 m maximum shielded cable length
Siemens 6ES7231-5QD32-0XB0 is a SM 1231 thermocouple analog input module in the SIMATIC S7-1200 product family.

The module supports four configurable thermocouple channels, diagnostics and noise rejection. Confirm sensor type, compensation method, polarity, firmware support and the complete order number before installation.

6ES7231-5QD32-0XB0 Siemens: Verify the complete order number, hardware and firmware configuration, wiring, grounding and current Siemens documentation before installation or replacement.
Siemens 6ES7231-5QD32-0XB0 SM 1231 TC 4 AI Manuals, Datasheets, Official Documents, LinksImportant 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.
  • Temperature monitoring in industrial machines
  • Oven and furnace temperature acquisition
  • Process skid thermocouple measurement
  • Distributed S7-1200 temperature I/O
  • Maintenance replacement of SM 1231 TC modules
6ES7231-5QD32-0XB0 is applied in manufacturer-supported SIMATIC S7-1200 configurations. Application suitability depends on the complete order number, electrical and signal configuration, firmware, enclosure, wiring and controlled Siemens documentation.
Use 6ES7231-5QD32-0XB0 only with the compatible Siemens SIMATIC S7-1200 configuration identified by the complete order number.
Match the complete order number and hardware version.
Confirm the electrical ratings, terminal arrangement and configured signal types.
Verify the CPU, firmware, project and communication requirements.
Check field wiring, grounding, enclosure and environmental requirements.
Do not treat a similar-looking SIMATIC product as interchangeable without controlled Siemens verification.
Confirm the complete Siemens order number before replacement because hardware and firmware revisions may change compatibility.
Record the installed module, CPU, firmware, project version and wiring.
Inspect the connectors, terminals, mounting and grounding.
Preserve the configured I/O, communication and fail-safe behavior.
Verify current Siemens documentation and environmental requirements.
Contact Amikon with 6ES7231-5QD32-0XB0 for availability and replacement support.

Alternative Names

Siemens SM 1231 TC 4 AI SIMATIC S7-1200 thermocouple module 6ES72315QD320XB0

Technical notes

Verify the complete Siemens order number, thermocouple type, measurement range, compensation, wiring, CPU and firmware support, grounding, EMC separation and current Siemens documentation before installation or replacement.

FAQs

  • Which thermocouple details must be confirmed before ordering this module?

    +
    Confirm the thermocouple type, measuring range, engineering units, four-channel requirement, cold-junction compensation method and supported S7-1200 hardware configuration.
  • Can 6ES7231-5QD32-0XB0 replace a standard voltage or current input module?

    +
    No direct replacement should be assumed. This SM 1231 is designed for thermocouple inputs; the sensor type, terminal assignment, compensation and module configuration differ from standard analog input modules.
  • What should a system integrator check in the PLC configuration?

    +
    Check the exact module order number, CPU and firmware support, channel measurement types, filtering, diagnostics, open-wire detection, addresses and alarm handling in the engineering project.
  • How should an automation engineer reduce unstable temperature readings?

    +
    Use the correct thermocouple extension cable, maintain polarity, apply shielding and separation from power wiring, verify grounding, select appropriate noise rejection and confirm cold-junction compensation.
  • What should an MRO buyer request for a plant-critical replacement?

    +
    Request the exact nameplate, module condition, terminal-block status, quantity, verified stock and dispatch time. Provide the installed CPU, thermocouple type and a wiring photo so suitability can be checked quickly.
  • What should be tested before the temperature loop returns to service?

    +
    Test all four channels with known temperature references, verify scaling and engineering units, check open-wire diagnostics, compare readings with the process standard and confirm PLC alarms.
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