Name: Siemens 6ES7231-4HA30-0XB0 | SIMATIC S7-1200 SB1231 One-Channel Analog Input Module
Brand: SIEMENS
SKU: 2927242
Price: 1 USD
Availability: InStock

Product Summary

Siemens 6ES7231-4HA30-0XB0 is the SIMATIC S7-1200 SB1231 one-channel analog input signal board. It adds one differential analog input at the CPU signal-board position for voltage or 0–20 mA measurement.

The input range on Siemens 6ES7231-4HA30-0XB0 can be selected as ±10 V, ±5 V, ±2.5 V or 0–20 mA. A 156.25 µs conversion cycle and 400 Hz interference suppression connect the field signal to the CPU value without turning the board into a multi-channel module.

For wiring, Siemens 6ES7231-4HA30-0XB0 uses a 5 V backplane supply of about 55 mA and a shielded twisted pair up to 100 m. Input resistance is at least 9 MΩ in voltage mode and at least 250 Ω in current mode, so the transmitter and reference wiring are selected together.

Black and white 3D line drawing exterior view of Siemens 6ES7231-4HA30-0XB0

Technical Details

Technical itemSpecification

Brand: Siemens
Model: 6ES7231-4HA30-0XB0
Product Name: SB1231 1-channel analog input
Country: Germany
Channels: 1 differential input
Voltage Ranges: ±10 V, ±5 V, ±2.5 V
Current Range: 0–20 mA
Conversion Cycle: 156.25 µs
Interference Suppression: 400 Hz
Voltage Input Resistance: ≥9 MΩ
Current Input Resistance: ≥250 Ω
Backplane Current: 55 mA
Cable: 100 m shielded twisted pair
Signal Board Position: S7-1200 CPU signal-board position

Product Functions

Functional role

Siemens 6ES7231-4HA30-0XB0 converts one differential field signal into an S7-1200 analog value.

Voltage sensing

The board accepts the supported bipolar voltage ranges for transmitters or measurement circuits.

Current sensing

The 0–20 mA range provides a unidirectional current input when the transmitter loop is wired correctly.

CPU value path

The converted channel value is delivered through the CPU signal-board process image for program use.

Diagnostics and Protection

Diagnostic approach

The useful fault checks for Siemens 6ES7231-4HA30-0XB0 start with range selection, reference wiring and field-loop continuity.

Range mismatch

A voltage transmitter on a current range, or the reverse, produces an invalid value even when the board is powered.

Loop continuity

Open conductors and missing current-loop supply are checked at the transmitter and terminal before replacing the board.

Shield reference

The shielded twisted pair and reference conductor are routed so interference suppression can work as intended.

Customer Questions

Why is Siemens 6ES7231-4HA30-0XB0 reading full scale with a low process signal?

Check that Siemens 6ES7231-4HA30-0XB0 is configured for the transmitter's voltage or 0–20 mA range and verify the reference conductor. A range mismatch can look like a saturated channel.

Can Siemens 6ES7231-4HA30-0XB0 read a bipolar voltage?

Yes. Siemens 6ES7231-4HA30-0XB0 supports ±10 V, ±5 V and ±2.5 V ranges. The transmitter wiring and the project scaling must use the same range definition.

What cable should be used with Siemens 6ES7231-4HA30-0XB0?

Use a shielded twisted pair within the 100 m stated cable limit for Siemens 6ES7231-4HA30-0XB0. Keep the signal and reference conductors paired and terminate the shield as defined by the panel wiring plan.

Why does Siemens 6ES7231-4HA30-0XB0 show noise near a drive?

Route the shielded pair for Siemens 6ES7231-4HA30-0XB0 away from switching conductors, check the shield reference and use the configured 400 Hz suppression. Do not solve a routing fault by changing the scale alone.

What is different between voltage and current input resistance on Siemens 6ES7231-4HA30-0XB0?

Siemens 6ES7231-4HA30-0XB0 presents at least 9 MΩ in voltage mode and at least 250 Ω in current mode. The connected transmitter must be selected for the corresponding electrical load.

Why does a one-channel board need a differential reference?

The differential input on Siemens 6ES7231-4HA30-0XB0 measures the selected signal against its paired reference, which helps the CPU receive the intended field potential instead of a floating or shared return.

Advantageous Brands

Moore Automation

https://www.mvme.cn

Moore Automation supplies Siemens signal boards and analog I/O together with other PLC, DCS, HMI, drive, sensor and condition-monitoring ranges.

For an analog enquiry, the exact model, signal type, quantity and destination can remain in the same record as the requested technical details and product image.

Analog scopeVoltage and current I/O ranges

PLC coverageSiemens and multi-brand controllers

Traceable requestModel, quantity and destination

Technical continuitySignal notes kept with the item

Enquiry Details

Contact Moore Automation

ManagerLeonia

Emailsales@mvme.cn

WhatsApp+86 180 3017 5807

Siemens 6ES7231-4HA30-0XB0 | SIMATIC S7-1200 SB1231 One-Channel Analog Input Module Item NO.: 2927242

Siemens 6ES7231-4HA30-0XB0 | SIMATIC S7-1200 SB1231 One-Channel Analog Input Module