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Siemens 6ES7231-0HC22-0XA0 Analog Input Expansion Module

From: | Author:Wang | Time :2025-09-28 | 374 visit: | 🔊 Click to read aloud ❚❚ ▶ | Share:

Siemens 6ES7231-0HC22-0XA0 Analog Input Expansion Module

Product basic information

Product model: 6ES7231-0HC22-0XA0

Belonging to the Siemens SIMATIC S7-200 series, which is an analog input expansion module (EM 231)

Core positioning: A 4-channel analog input module designed specifically for S7-22X CPUs, supporting voltage and current inputs, using a 12 bit converter, suitable for analog signal acquisition in industrial automation scenarios. The document version date is March 22, 2017, and was last modified on March 16, 2017. The content may be subject to further adjustments.

Core electrical and input specifications

（1） Power supply and power consumption

Parameter category details

Input current load voltage L+(no load): maximum 60mA

-Backplane bus 5V DC: maximum 20mA

Typical power loss value of 2W

（2） Analog input characteristics

Specific specifications of input parameters

Number of channels: 4 differential analog input channels

Input type support - Supports: voltage input, current input

-Not supported: thermocouple, resistance thermometer, resistance input

Destruction limit - Voltage input: Maximum 30V

-Current input: maximum 32mA

Voltage input range (rated value) -0 to+5V (input resistance 10M Ω)

-0 to+10V (input resistance 10M Ω)

--2.5V to+2.5V (input resistance 10M Ω)

--5V to+5V (input resistance 10M Ω)

Current input range (rated value) 0 to 20mA (input resistance 10M Ω)

Cable length: Shielded cable up to 100m (up to sensor)

（3） Conversion and anti-interference performance

Performance parameter specifications

Maximum resolution of 12 bits (including symbol bit) when exceeding the range

Conversion time of 250 μ s per channel

Anti interference capability - interference voltage suppression for interference frequency f1 (50/60Hz): 40dB (DC to 60V)

-Suppression of interference voltage for frequency f=n × (f1 ± 1%) (f1 is the interference frequency): value not specified

-Common mode voltage: maximum 12V


Mechanical and Connection Specifications

（1） Size and weight

Dimensions: Width 71.2mm, Height 80mm, Depth 62mm

Weight: Approximately 183g

（2） Connection and isolation

Connection method: Plug in free I/O terminal (requires other wiring methods)

Potential isolation: There is no potential isolation between analog input channels


Functional characteristics

（1） Diagnosis and indication

Status indicator: Red external fault indicator light (EXTF), used to display the status of external faults

Diagnostic function: No explicit mention of complex diagnostic functions, only basic external faults are indicated through fault lights


Applicable restrictions

CPU compatibility: Only applicable to S7-22X series CPUs, not compatible with other series CPUs

Input type limitation: Temperature sensors such as thermocouples and resistance thermometers are not supported for input, only voltage and current signals can be collected

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