SIEMENS Digital Input/Output Module, 6ES7321-1BL00-4AA1
LEHIY item code: LH-2241
Power Supply Load Voltage L+/DC Rated Value: 24V
Category: Digital Input/Output Module
Input Current/From Backplane Bus 5VDC, Maximum: 15mA
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This page helps you check SIEMENS Digital Input/Output Module, 6ES7321-1BL00-4AA1 before you ask for a quote.
Confirm the brand, model number, part number, and quantity. Share a clear nameplate photo when the old item has close variants.
LEHIY can check stock, lead time, packing, shipping documents, and safe replacement options for maintenance orders.
Product Overview
• Digital Inputs • For connecting standard switches and two-wire proximity switches |
Technical Specifications
Ordering Models | 6ES7321-1BL00-4AA1 | |
Power Supply Load Voltage L+/DC Rated Value | 24V | |
Input Current/From Backplane Bus 5VDC, Maximum | 15mA | |
Typical Power Consumption | 6.5W | |
Number of Digital Input Points | 32 | |
Input Characteristic Curve, Compliant with Standard IEC61131, Type 1 | √ | |
Number of Input Points that Can Be Controlled Simultaneously | •Horizontal mounting: Maximum at 40°C Maximum at 60°C •Vertical mounting: Maximum at 40°C | 32 16 32 |
Input Voltage | •Type of Input Voltage •DC Rating •Signal "0" •Signal "1" | DC 24V -30～+5V 13～30V |
Input Current: Signal "1", Typical Value | ||
Input Delay (for input voltage rating) Standard Input: Minimum value when "0" to "1" Maximum value when "0" to "1" | -- 1.2ms 4.8ms | |
•Maximum length of shielded cable •Maximum length of unshielded cable | 1000m 600m | |
Connectable Encoder: 2-Wire Sensor -Allowable Quiescent Current (2-Wire Sensor), Maximum | √ 1.5mA | |
Diagnostic LED Indicator: Digital Input Status Indicator (Green) | √ | |
Electrically Isolated Digital Input | • Between Channels • Number of Points per Group Between Channels • Between Channel and Backplane Bus | -- 16 √; Optocoupler |
Isolation Test Voltage | 500VDC | |
Required Front Connector | Front Connector, 40P Screw Contacts | |
Dimensions (mm) Width × Height × Depth | 40×125×120 | |
Approximate Weight (g) | 260 |
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Siemens |
| Category | Digital Input/Output Module |
| Number of Input Points | 32 |
| Input Voltage (V) | DC24V |
| Input Current (mA) | 7mA |
Plain language sourcing guide for SIEMENS Digital Input/Output Module, 6ES7321-1BL00-4AA1
Start with the full model name. Check the brand name. Check the part number. Check the code on the old unit. These small checks help you avoid a wrong order.
Take one clear photo of the front label. Take one photo of the side label. If the part has a cable, plug, port, seal, coil, or screen, take a photo of that area too.
Tell us the quantity you need. Tell us your country. Tell us the date when the plant needs the part. We can then check stock, lead time, safe packing, and the best shipping plan.
If the exact model is no longer made, do not guess. Send the old model and the use case. LEHIY can compare close options and explain which choice is safer for repair work.
Use simple order notes. Write the model in one line. Write the quantity in one line. Write the delivery country in one line. This helps our team reply faster.
Check the old part before removal. Look at the label. Look at the connector. Look at the mounting size. Look at the voltage or pressure rating if it is shown.
Do not rely on a short nickname for a part. Many industrial items have close versions. A small suffix can change the plug, output, range, or software setting.
Ask for a stock check if the plant is stopped. Ask for a lead time if the order is planned. Ask for packing photos if the part is fragile or heavy.
For a replacement order, tell us what failed. Tell us where the part is used. Tell us if an equal model is acceptable. This makes the first answer more useful.
For repeat orders, send the last invoice, old label, or old packing photo. The same reference can help us match the correct product again.
For urgent service, keep the message simple. One model, one quantity, one photo, and one delivery target are enough for a fast first check.
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| Brand Name: | Siemens | Certification: | ISO9001, CE |
|---|---|---|---|
| Place of Origin: | China | Condition: | New |
| Warranty: | 1 year | Customized sourcing: | available |
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Ans. LEHIY specializes in industrial automation and control components, offering fast sourcing, stable quality, and competitive prices for global customers.
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Ans. Most items ship within 3-7 days. Customized or rare models may take 10-30 working days.
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Ans. Our main products include PLCs, sensors, valves, solenoid valves, actuators, power modules, transmitters, and complete industrial automation solutions.
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SIEMENS Digital Input/Output Module, 6ES7321-1BL00-4AA1
Send the brand, model, part number, quantity, nameplate photos, and application requirements. LEHIY will check availability, suitable alternatives, packing details, and delivery options before quoting.
For discontinued, temporarily unavailable, or configuration-sensitive items, our team can compare the requested model with close variants or compatible replacements for maintenance and spare parts planning.
Use this page as a practical sourcing note for engineers, buyers, and maintenance teams comparing automation components. Check the model name, brand, LEHIY code, application, and replacement requirements before sending an inquiry.
Short, clear information helps our team confirm availability faster and reduce back-and-forth communication during urgent maintenance projects.
- Confirm the complete model number and any suffix printed on the nameplate.
- Share quantity, destination country, preferred shipping method, and target delivery date.
- Include photos, drawings, old purchase records, or datasheets when compatible alternatives are acceptable.
- Ask for stock checking, replacement comparison, packing details, and export documentation before ordering.
Useful details for a faster quote
- Complete model and part number
- Required quantity and target delivery date
- Nameplate photos, drawings, or old purchase records
- Voltage, signal range, dimensions, or accessory needs
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SIEMENS Digital Input/Output Module, 6ES7321-1BL00-4AA1 verification notes
Please send the full model number, quantity, target delivery date, and nameplate photos. These details help us check the requested product or a close replacement.
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