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UN 231-0HF22-0XA0, UNIMAT, expansion module EM231 (8x AI, 14 bits), replacement for Siemens S7-200

Cat. no.: UN 231-0HF22-0XA0

Manufacturer: Unimat

On request

Regular price excl. VAT: 207,10 €
incl. VAT: 250,59 €
Our price excl. VAT: 176,04 €
incl. VAT 21 %: 213,01 €
You save: 31,06 € excl. VAT

Recycling fee 5-32-1 (0,041 €/kg) 0,01 €

Weight 0.2 kg

HS Code (Taric) 85389091

Country of origin CN

Description

In stock 0 pcs · We will confirm the delivery date after ordering · Free technical support

Description · Parameters · Wiring · What else to buy · Documentation · FAQ

UN 231-0HF22-0XA0 – expansion module EM231, 8x AI, 14 bits, UNIMAT

Replacement for Siemens SIMATIC S7-200 6ES7231-0HF22-0XA0
This product is a functionally and mechanically compatible replacement for the original Siemens EM231 (8x AI, 14 bits) (order number 6ES7231-0HF22-0XA0). Siemens SIMATIC S7-200 has been out of production (EOP) for many years and original parts are only available as refurbished or remaining stock at a high price – this replacement solves servicing and expansion of existing installations S7-200 without the need to switch to another platform.

Module EM231 adds analogue channels (8x AI, 14 bits) for measuring or controlling continuous physical quantities (temperature, pressure, flow, voltage/current).

Key advantages
Mechanically and electrically compatible with the Siemens S7-200. expansion bus
Can be combined with original Siemens modules and UNIMAT CPUs in one assembly.
Channel status diagnostics via LEDs on the module.
Available replacement for a part that Siemens no longer manufactures.
Technical specifications
Order number (MPN) UN 231-0HF22-0XA0
Manufacturer UNIMAT
Type EM231 compatible with Siemens S7-200
Properties 8x AI, 14 bits
Logic supply from the CPU expansion bus
Net weight 0.2 kg
Mounting 35 mm DIN rail, next to the CPU
Typical applications

Increasing the number of inputs/outputs in an existing installation S7-200/UNIMAT without the need to replace the CPU.

Technical specifications

Order number	UN 231-0HF22-0XA0
Manufacturer	UNIMAT
Type	EM231
Properties	8x AI, 14 bits
Supply	from the CPU expansion bus
Mounting	35 mm DIN rail
Weight	0.2 kg
Replacement for Siemens	6ES7231-0HF22-0XA0

Wiring diagram and example

Indicative wiring diagram. For an actual installation, verify the current documentation of the original Siemens model.

Route the analogue channel with a shielded cable and earth the shield at one end only (usually in the switchboard). Route it separately from power cables. For thermocouple and RTD inputs, observe the correct sensor type and number of wires (2/3/4-wire connection).

What else to buy for this module

The module belongs to an assembly with any CPU S7-200 or UNIMAT (up to 7 modules per CPU). Recommended related components:

UN 214-1AD23-0XB0 – CPU224
CPU S7-200/UNIMAT, to which you connect this module.
UN 214-1BD23-0XB0 – CPU224
CPU S7-200/UNIMAT, to which you connect this module.
UN 216-2AD23-0XB0 – CPU226
CPU S7-200/UNIMAT, to which you connect this module.
UN 901-3DB30-0XA0 – programming cable PC/PPI
Required for connecting the CPU to a computer with STEP 7-Micro/WIN. software

Reference documentation of the original Siemens model

The following links lead to the documentation of the original Siemens 6ES7231-0HF22-0XA0, which this product replaces – the pinout and electrical parameters are identical.

Frequently asked questions

Is the module compatible with all CPUs S7-200?

Yes, the EM module expansion bus is identical across CPU 222/224/224XP/226 and compatible UNIMAT CPUs.

How many of these modules can be connected to the CPU?

It depends on the CPU type, usually up to 7 expansion modules (combination of digital and analogue) per CPU.

Can it be combined with original Siemens modules?

Yes, the module is mechanically and electrically interchangeable with the original Siemens 6ES7231-0HF22-0XA0.

TECHNOLINE supplies compatible replacements for Siemens SIMATIC parts S7-200. We supply with an invoice and technical support in choosing the correct variant.

Technical parameters

Objednací kód	UN 231-0HF22-0XA0
Výrobce	Unimat

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Ask us about technical parameters, compatibility with your equipment, availability or a price for larger quantities. It helps if you tell us what application you need the product for — if it does not fit, we will recommend a more suitable type.

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