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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 321-1BL00-0AA0 |
| Manufacturer | Siemens |
| Rated Load Voltage L+ (DC) | 24 V |
| Permissible Voltage Range | Lower limit: 20.4 V, Upper limit: 28.8 V |
| Input Current from Backplane Bus | Max. 15 mA |
| Power Loss | Typical: 6.5 W |
| Number of Digital Inputs | 32 |
| Input Characteristic Curve | In accordance with IEC 61131, type 1 |
| Simultaneously Controllable Inputs (Horizontal Installation) | Up to 40 °C: max. 32, Up to 60 °C: max. 16 |
| Simultaneously Controllable Inputs (Vertical Installation) | Up to 40 °C: max. 32 |
| Input Voltage for Signal "1" | 13 to 30 V |
| Input Voltage for Signal "0" | -30 to +5 V |
| Input Current for Signal "1" | Typical: 7 mA |
| Input Delay for Rated Input Voltage | At "0" to "1": min. 1.2 ms, max. 4.8 ms, At "1" to "0": min. 1.2 ms, max. 4.8 ms |
| Cable Length (Shielded) | Max. 1000 m |
| Cable Length (Unshielded) | Max. 600 m |
| Connectable Encoders | 2-wire sensor: Yes, Permissible quiescent current: max. 1.5 mA |
| Diagnostic Functions | No |
| Status Indicator LED | Digital input (green): Yes |
| Potential Separation | Between the channels: No, Between the channels in groups of 16, Between the channels and backplane bus: Yes; Optocoupler |
| Isolation | Tested with 500 V DC |
| Required Front Connector | 40-pin |
| Dimensions (Width x Height x Depth) | 40 mm x 125 mm x 120 mm |
| Weight | Approx. 260 g |
The Siemens 321-1BL00-0AA0 is a high-performance digital input module designed for the SIMATIC S7-300 series. This module is engineered to provide a reliable interface for capturing digital signals from a variety of input devices such as sensors, switches, and encoders in industrial automation environments.
Featuring 32 optically isolated digital inputs, the module ensures robust signal integrity by preventing electrical interference between the inputs and the system. The inputs are compatible with a 24 V DC supply voltage, accommodating a range of industrial control applications. The module's ability to handle up to 32 inputs simultaneously at temperatures up to 40°C, and 16 inputs at temperatures up to 60°C, makes it versatile for different operating conditions.
The 321-1BL00-0AA0 is designed with a compact form factor, measuring 40 mm in width, 125 mm in height, and 120 mm in depth, allowing for efficient use of space within control cabinets. The module's input delay is minimised, with a response time ranging from 1.2 ms to 4.8 ms, ensuring timely and accurate signal processing.
For applications requiring long-distance signal transmission, the module supports cable lengths up to 1000 m for shielded cables and 600 m for unshielded cables, providing flexibility in system design. Additionally, the module is equipped with a green LED status indicator for each digital input, offering immediate visual feedback on the operational status.
The Siemens 321-1BL00-0AA0 is a robust and reliable solution for digital signal input processing, making it an essential component for industrial automation systems requiring high accuracy and dependability.
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Frequently Asked Questions
What type of module is this?
This is a digital input module from the SIMATIC S7-300 series, designed for use in industrial automation systems.
How many digital inputs does the module have?
The module features 32 optically isolated digital inputs.
What is the rated input voltage for the digital inputs?
The rated input voltage for the digital inputs is 24 V DC.
Can this module be used with 2-wire sensors?
Yes, the module can be connected to 2-wire sensors, with a permissible quiescent current of up to 1.5 mA.
Is there any potential separation between the channels?
There is no potential separation between the individual channels, but there is potential separation between the channels in groups of 16 and between the channels and the backplane bus via optocouplers.
What is the maximum cable length for connecting inputs?
The maximum cable length for shielded cables is 1000 metres, and for unshielded cables, it is 600 metres.
Does the module have any diagnostic functions?
No, the module does not have diagnostic functions, but it does have a green LED status indicator for each digital input.
What is the typical power loss for this module?
The typical power loss for the module is approximately 6.5 W.
What are the dimensions of the module?
The module has dimensions of 40 mm in width, 125 mm in height, and 120 mm in depth.
Is the module equipped with any form of short-circuit protection?
Yes, the module includes electronic short-circuit protection for the outputs.
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