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- Siemens
- Siemens Simatic S7
- S7-1200
- 6ES7221-1BH32-0XB0
In Stock
Ships by Sunday, August 16
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· Product image is representative; revision or series may vary. Contact us to request a specific version.
We provide 1 year warranty for all remaining parts.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online.
If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.
Amikon offers a wide range of components, products and services related to industrial automation. We have a large surplus of stocks and are also distributors of new products from a variety of quality manufacturers.
Technical specifications for 6ES7221-1BH32-0XB0
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Product Model6ES7221-1BH32-0XB0
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Product ParametersSIMATIC S7-1200, Digital input SM 1221
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Tariff Code8537101190
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Country of originGermany
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Place of shipmentXiamen, China
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In stock1 unit
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Estimated Shipping Size4.5x7.5x10cm
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ManufacturerSiemens
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Weight0.15 kg
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Product type designationSM 1221, DI 16x24 V DC
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Rated value (DC)24 V
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permissible range, lower limit (DC)20.4 V
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permissible range, upper limit (DC)28.8 V
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from backplane bus 5 V DC, max.130 mA
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from load voltage L+ (without load), max.4 mA; per channel
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Power loss, typ.2.5 W
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Number of digital inputs16
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Rated value (DC)24 V
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for signal5 V DC at 1 mA
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for signal15 V DC at 2.5 mA
Description
The Siemens 6ES7221-1BH32-0XB0 SIMATIC S7-1200 SM 1221 Digital Input Module is a 16-channel digital input expansion module for SIMATIC S7-1200 automation systems. It provides additional 24 V DC digital input points for connecting field devices such as sensors, switches, and control signals. The module supports sink/source input wiring and complies with IEC 61131 Type 1 input characteristics, making it suitable for a wide range of industrial automation applications.
The SM 1221 communicates directly with the S7-1200 CPU through the integrated expansion bus and can be configured through Siemens TIA Portal engineering software. With adjustable input delay parameters, compact installation dimensions, and support for multiple industrial sensor types, the module is widely used in machine automation, production equipment, process monitoring, and distributed control applications
The SM 1221 communicates directly with the S7-1200 CPU through the integrated expansion bus and can be configured through Siemens TIA Portal engineering software. With adjustable input delay parameters, compact installation dimensions, and support for multiple industrial sensor types, the module is widely used in machine automation, production equipment, process monitoring, and distributed control applications
Information
Overview
Manuals
Application Notes
Product Applications
Physical Insertion & Installation
Features:
- 16 digital inputs (DI) at 24 V DC
- Sink/Source input configuration (IEC Type 1)
- Isolation between field side and logic
- Diagnostic alarm capability with status LEDs
The 6ES7221-1BH32-0XB0 supports both sink and source input configurations in accordance with IEC 61131 Type 1 sink standards, allowing seamless connection to a wide variety of digital sensors, switches, and field devices. The 6ES7221-1BH32-0XB0 organizes its 16 inputs into 4 isolation groups, providing 707 V DC isolation between the field side and logic for enhanced system protection.
The 6ES7221-1BH32-0XB0 SIEMENS SIMATIC S7-1200, Digital input SM 1221 may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
SIEMENS 6ES7221-1BH32-0XB0 SIMATIC S7-1200, Digital input SM 1221 Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The 6ES7221-1BH32-0XB0 supports cable lengths up to 500 meters shielded and 300 meters unshielded, providing flexibility in system layout and installation. The 6ES7221-1BH32-0XB0 operates reliably across an ambient temperature range of -20°C to +60°C during operation and -40°C to +70°C during storage and transportation.
The 6ES7221-1BH32-0XB0 carries comprehensive international certifications including CE mark, CSA approval, UL approval, cULus, FM approval, RCM (formerly C-TICK), KC approval, and marine approval. The 6ES7221-1BH32-0XB0 features an IP20 degree of protection and plastic enclosure material, making it suitable for installation in industrial control panels and enclosures.
- Chemical/Petrochemical: Monitors thermal reactions in reactors, cracking units, and distillation columns via RTDs/thermocouples
- Food/Beverage: Regulates pasteurization, ovens, and refrigeration for product safety and shelf life
- Power/Utilities: Tracks boiler, turbine bearing, and heat exchanger temperatures to prevent overheating
- Automotive/Metal: Provides feedback in heat-treatment furnaces, casting molds, and paint lines under noisy conditions
- HVAC/Cleanroom: Regulates chambers, semiconductor lines, and pharma facilities requiring stable ambient conditions
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Power Down System: Disconnect all primary power from the CPU and existing modules.
Mount to DIN Rail: Hook the module onto a standard 35mm DIN rail next to the CPU (or existing rightmost expansion module).Slide and Interlock: Slide the module to the left until its side connectors align perfectly with the CPU or adjacent module.
Engage Bus Connector: Use a small flathead screwdriver to slide the integrated backplane bus extension clip (located at the top-left of the module) to the left into the adjacent device to lock them electronically.
Secure the Units: Pull down the DIN rail clips on the bottom of the module to lock its physical position onto the rail.
Alternative Names
6ES7221-1BH32-0XBO
6ES7221-1BH32-OXB0
6ES7221-18H32-0XB0
6ES7221-IBH32-0XB0
6ES722I-1BH32-0XB0
6ES72Z1-1BH32-0XB0
6ES7Z21-1BH32-0XB0
6ES7 221-1BH32-0XB0
6ES7 221-1BH32-0XBO
6ES7 221-1BH32-OXB0
6ES7 221-18H32-0XB0
6ES7 221-IBH32-0XB0
6ES7 22I-1BH32-0XB0
6ES7 ZZ1-1BH32-0XB0
6ES72211BH320XB0
Technical notes
The module operates in temperatures from -20°C to +60°C in horizontal installation and -20°C to +50°C in vertical installation. Storage and transport temperatures range from -40°C to +70°C. Relative humidity tolerance is 95% at 25°C without condensation. IP20 protection makes it suitable for installation in industrial control cabinets. Maximum cable lengths are 500 meters for shielded cables and 300 meters for unshielded cables.
FAQs
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What is the product type?
+It is a Digital Input SM 1221 module, designed to expand the input capability of a SIMATIC S7-1200 CPU. -
How many inputs does it have?
+The module provides 16 digital inputs. -
Is it compatible with all S7-1200 CPUs?
+It is compatible with all SIMATIC S7-1200 CPUs except for the CPU 1211C. -
What are the input filter times and how do they work?
+The S7-1200 provides digital input filter times These filters are used to debounce input signals and suppress electrical noise, which prevents unwanted false triggering in your program logic.
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