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1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
| 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 |
This is a digital input module from the Siemens SIMATIC S7-300 series.
The module has 16 digital inputs.
The input voltage range is 48 to 125 V DC.
Yes, the module is optically isolated.
The maximum input current is 3.5 mA for signal '1'.
The dimensions are 40 mm in width, 125 mm in height, and 120 mm in depth.
The module weighs approximately 200 grams.
A 20-pin front connector is required.
The typical power loss is 4.3 W.
The maximum cable length is 1000 meters for shielded cables and 600 meters for unshielded cables.
No, this module does not have diagnostic functions.
The isolation is tested with 1500 V DC.
Yes, it is compatible with 2-wire sensors.
The permissible quiescent current is 1 mA.
The input delay ranges from 0.1 ms to 3.5 ms for '0' to '1' transitions.
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
All parts new or reconditioned are covered by EU Automation 12 month warranty
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