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UN 221-1BL22-0XA0, UNIMAT, expansion module EM221 (32x DI), replacement for Siemens S7-200

Cat. no.: UN 221-1BL22-0XA0

Manufacturer: Unimat

In stock 15 pcs

Regular price excl. VAT: 132,05 €
incl. VAT: 159,78 €
Our price excl. VAT: 112,24 €
incl. VAT 21 %: 135,81 €
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Weight 0.17 kg

HS Code (Taric) 85389091

Country of origin CN

Description

In stock 15 pcs · Immediate dispatch · Free technical support

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

UN 221-1BL22-0XA0 – expansion module EM221, 32x DI, UNIMAT

Replacement for Siemens SIMATIC S7-200 6ES7221-1BL22-0XA0
This product is a functionally and mechanically compatible replacement for the original Siemens EM221 (32x DI) (order number 6ES7221-1BL22-0XA0). 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 EM221 adds 32 digital inputs 24 V DC to CPU S7-200/UNIMAT It is used wherever the integrated inputs on the CPU are not enough to cover the number of push buttons, limit switches or sensors.

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 221-1BL22-0XA0
Manufacturer UNIMAT
Type EM221 compatible with Siemens S7-200
Properties 32x DI
Logic supply from the CPU expansion bus
Net weight 0.17 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 221-1BL22-0XA0
Manufacturer	UNIMAT
Type	EM221
Properties	32x DI
Supply	from the CPU expansion bus
Mounting	35 mm DIN rail
Weight	0.17 kg
Replacement for Siemens	6ES7221-1BL22-0XA0

Wiring diagram and example

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

Digital input:
  +24V ----+---[ sensor ]---- Ix.x
           |
   0V -----+------------------------ M

The module draws its logic supply from the CPU expansion bus; the inputs need their own 24 V DC supply for the sensors.

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 6ES7221-1BL22-0XA0, 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 6ES7221-1BL22-0XA0.

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 221-1BL22-0XA0
Výrobce	Unimat

Ask about this product

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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