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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 6ES7321-1CH20-0AA0 |
| Manufacturer | Siemens |
| Part Category | PLC Systems |
| Part Family | Simatic S7 |
| Series | S7-300 |
| Type | Digital Input Module |
| Number of Digital Inputs | 16 |
| Input Voltage Range | 48-125 V DC |
| Input Current (Backplane) | 40 mA |
| Power Loss | 4.3 W |
| Input Delay | 0.1 to 3.5 ms |
| Isolation | Optically isolated |
| Connection Method | 20-pin front connector |
| Dimensions (W x H x D) | 40 x 125 x 120 mm |
| Weight | 200 g |
| Input Characteristic Curve | IEC 61131, Type 1 |
| Simultaneously Controllable Inputs | Up to 8 (horizontal installation) |
| Cable Length (Shielded) | Max. 1000 m |
| Cable Length (Unshielded) | Max. 600 m |
| Connectable Encoders | 2-wire sensor |
| Permissible Quiescent Current | Max. 1 mA |
| Status Indicator | Green LED for digital input status |
| Environmental Conditions | Suitable for use in harsh environments, resistant to biologically and chemically active substances, and mechanically active substances. |
| Certifications | CE, UL, RCM, KC, EAC, EN 50155 |
| Operating Temperature Range | -25 °C to 70 °C |
| Storage Temperature Range | -40 °C to 70 °C |
| Installation Altitude | Up to 2000 m above sea level |
| Relative Humidity | Up to 100% with condensation |
The Siemens SIMATIC S7-300 Series Digital Input Module, part number 6ES7321-1CH20-0AA0, is a robust and reliable component designed for industrial automation applications. This digital input module features 16 optically isolated digital inputs, capable of handling a wide input voltage range from 48 to 125 V DC. It is engineered to meet the demanding requirements of modern automation systems, ensuring precise and efficient data acquisition.
With a compact design measuring 40 mm in width, 125 mm in height, and 120 mm in depth, this module is ideal for space-constrained environments. It supports a maximum input current of 40 mA from the backplane bus and has a typical power loss of 4.3 W, making it an energy-efficient choice for your automation needs.
The 6ES7321-1CH20-0AA0 module adheres to the IEC 61131 standard, ensuring compatibility and reliability in various industrial settings. It features a 20-pin front connector for easy installation and maintenance. The module is designed to operate within a temperature range of -25°C to 70°C, making it suitable for a wide range of environmental conditions.
This digital input module also includes status indicators for each digital input, providing clear and immediate feedback on the operational status. The optocoupler-based galvanic isolation between the channels and the backplane bus enhances the module's durability and safety.
Ideal for use in manufacturing, process control, and other industrial applications, the Siemens SIMATIC S7-300 Series Digital Input Module 6ES7321-1CH20-0AA0 offers a reliable and efficient solution for your automation requirements.
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Frequently Asked Questions
What type of module is this?
This is a digital input module from the Siemens SIMATIC S7-300 series.
How many digital inputs does this module have?
The module has 16 digital inputs.
What is the input voltage range for this module?
The input voltage range is 48 to 125 V DC.
Is the module optically isolated?
Yes, the module is optically isolated.
What is the maximum input current for this module?
The maximum input current is 3.5 mA for signal '1'.
What are the dimensions of this module?
The dimensions are 40 mm in width, 125 mm in height, and 120 mm in depth.
What is the weight of this module?
The module weighs approximately 200 grams.
What type of connector is required for this module?
A 20-pin front connector is required.
What is the power loss of this module?
The typical power loss is 4.3 W.
What is the maximum cable length for shielded and unshielded cables?
The maximum cable length is 1000 meters for shielded cables and 600 meters for unshielded cables.
Does this module have diagnostic functions?
No, this module does not have diagnostic functions.
What is the isolation test voltage for this module?
The isolation is tested with 1500 V DC.
Can this module be used with 2-wire sensors?
Yes, it is compatible with 2-wire sensors.
What is the permissible quiescent current for 2-wire sensors?
The permissible quiescent current is 1 mA.
What is the input delay range for this module?
The input delay ranges from 0.1 ms to 3.5 ms for '0' to '1' transitions.
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