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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 6ES7521-7EH00-0AB0 |
| Manufacturer | Siemens |
| Product Type | Digital Input Module |
| Input Channels | 16 |
| Input Voltage Type | AC/DC |
| Rated Input Voltage (DC) | 24 V, 48 V, 125 V |
| Rated Input Voltage (AC) | 24 V, 48 V, 125 V (50 - 60 Hz) |
| Input Current for Signal "1" | Typical 3 mA at 24 V DC |
| Input Delay for Standard Inputs | Parameterizable: 0.05 / 0.1 / 0.4 / 1.6 / 3.2 / 12.8 / 20 ms with DC, 20 ms fixed with AC |
| Cable Length | Shielded, max. 1,000 m; Unshielded, max. 600 m |
| Connectable Encoders | 2-wire sensor |
| Diagnostics Function | Yes |
| Alarms | Diagnostic alarm, Hardware interrupt |
| Diagnostics Indication LED | RUN LED (Green), ERROR LED (Red), Channel status display (Green), Module diagnostics (Red) |
| Potential Separation | Between the channels, in groups of 1, and between the channels and backplane bus |
| Permissible Potential Difference | Between different circuits: 146 V DC/132 V AC |
| Isolation | Tested with 2,000 V DC |
| Ambient Temperature Operation | Horizontal installation: 0 °C to 60 °C, Vertical installation: 0 °C to 40 °C |
| Dimensions (W x H x D) | 35 mm x 147 mm x 129 mm |
| Weight | Approx. 240 g |
The Siemens 6ES7521-7EH00-0AB0 is a high-functioning digital input module designed to be integrated into the SIMATIC S7-1500 system, renowned for its reliability and performance in industrial automation. This module is capable of handling 16 digital inputs with a voltage range of 24 to 125 V UC, making it versatile for various industrial applications. The module features an input delay that can be parameterised, allowing for customisation to meet specific system requirements, and supports diagnostics for efficient troubleshooting.
Engineered for high-frequency applications, the 6ES7521-7EH00-0AB0 ensures rapid signal processing, which is crucial for time-sensitive tasks. Its robust design is suitable for a wide range of operating temperatures, ensuring consistent performance even in demanding environments. The module's compact dimensions allow for efficient use of control cabinet space, while its potential separation between channels enhances signal integrity and system safety.
This digital input module is an excellent choice for those looking to expand their control systems with a reliable and flexible input solution. Its integration into the TIA Portal allows for streamlined configuration and maintenance, further simplifying the management of complex automation tasks. Whether used in manufacturing, processing, or other industrial settings, the Siemens 6ES7521-7EH00-0AB0 is engineered to deliver precise and dependable input monitoring.
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Frequently Asked Questions
What type of input module is the Siemens Digital Input Module?
The Siemens Digital Input Module is a high-feature module that supports 16 digital inputs with a voltage range of 24 to 125 V UC, suitable for a variety of industrial applications.
Can the input delay be parameterised on this digital input module?
Yes, the input delay on this digital input module is parameterisable, offering flexibility with settings ranging from 0.05 to 20 ms for DC and a fixed 20 ms for AC.
Is the Siemens Digital Input Module suitable for safety functions?
No, this particular digital input module is not suitable for safety functions.
What is the maximum cable length that can be used with this digital input module?
The maximum cable length for a shielded connection is 1000 meters, and for an unshielded connection, it is 600 meters.
Does the Siemens Digital Input Module support diagnostics functions?
Yes, the module supports comprehensive diagnostics functions, including hardware interrupts and diagnostic alarms.
What kind of potential separation does the module offer?
The module provides potential separation between the channels and also between the channels and the backplane bus, enhancing the reliability and integrity of the signals.
What are the ambient operating temperature limits for this module?
The ambient operating temperature for horizontal installation ranges from 0 °C to 60 °C, and for vertical installation, it ranges from 0 °C to 40 °C.
How does the module indicate its status and diagnostics?
The module uses LED indicators for RUN and ERROR signals, as well as for channel and module diagnostics, providing clear and immediate visual feedback on its status.
What is the width of the Siemens Digital Input Module?
The module has a width of 35 mm, making it compact and suitable for installation in control cabinets with limited space.
Can I connect a 2-wire sensor to this digital input module?
Yes, the module is capable of connecting to 2-wire sensors, with a permissible quiescent current of up to 1.5 mA.
