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Siemens 6ES7221-1BF32-0XB0 Digital Input Module with 24 V DC Supply
Siemens 6ES7221-1BF32-0XB0 Digital Input Module with 24 V DC Supply
24 V DC Digital Input Module
8 Digital Inputs SM 1221
1.5 W Power Loss Siemens Simatic PLC Module
Place of Origin:
Germany
Brand Name:
Siemens
Model Number:
6ES7221-1BF32-0XB0
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Product Details
Rated Value (DC):
24 V
Permissible Range, Lower Limit (DC):
20.4 V
Permissible Range, Upper Limit (DC):
28.8 V
From Backplane Bus 5 V DC, Max:
105 MA
From Load Voltage L+ (without Load), Max:
4 MA; Per Channel
Power Loss, Typ:
1.5 W
For Signal \"0\" 5 V DC At:
1 MA
For Signal \"1\" 15 V DC At:
2.5 MA
Highlight:
24 V DC Digital Input Module
,8 Digital Inputs SM 1221
,1.5 W Power Loss Siemens Simatic PLC Module
Payment & Shipping Terms
Minimum Order Quantity
1
Price
66USD
Packaging Details
Brand new and original
Delivery Time
2-3 work days
Payment Terms
T/T
Supply Ability
in stock
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Product Description
| Category | Technical Parameter | Specified Value / Rating |
|---|---|---|
| General Info | Product Type Designation | SM 1221, DI 8x24 V DC |
| Supply Voltage | 24 V | |
| Supply Voltage | Rated Value (DC) | 24 V |
| Permissible Range (Lower Limit) | 20.4 V DC | |
| Permissible Range (Upper Limit) | 28.8 V DC | |
| Current Consumption | Backplane Bus (5 V DC), Max. | 105 mA |
| From Load Voltage L+ (No Load), Max. | 4 mA per channel | |
| Power Dynamics | Power Supply to Transmitters | Yes (Integrated) |
| Power Loss (Typical) | 1.5 W | |
| Input Channels | Total Number of Digital Inputs | 8 |
| Isolation Grouping | 2 groups of 4 | |
| Compliance Standard | IEC 61131, Type 1 | |
| Thermal Derating | All Mounting Positions (up to 40 °C) | 8 Inputs (Simultaneous) |
| Horizontal Installation (up to 40 °C) | 8 Inputs (Simultaneous) | |
| Horizontal Installation (up to 50 °C) | 8 Inputs (Simultaneous) | |
| Vertical Installation (up to 40 °C) | 8 Inputs (Simultaneous) | |
| Voltage Levels | Rated Input Voltage | 24 V DC |
| Signal "0" Threshold | 5 V DC @ 1 mA | |
| Signal "1" Threshold | 15 V DC @ 2.5 mA | |
| Input Current | Max.Permissible Quiescent Current (Signal 0) | 1 mA |
| Min. Operational Current (Signal 1) | 2.5 mA | |
| Typical Operational Current (Signal 1) | 4 mA |
Power & Supply Management
- Rated supply voltage: 24 V DC
- Permissible voltage range: 20.4 - 28.8 V DC
- Backplane bus current consumption: ≤105 mA (5 V DC)
- Load voltage consumption: ≤4 mA per channel (no load)
- Integrated power supply for connected transmitters
- Typical power dissipation: 1.5 W
Ensures stable operation with minimal energy loss, even under fluctuating supply conditions.
Industrial Applications
- Factory Automation: Reliable signal capture from sensors, pushbuttons, and switches on production lines
- Process Control: Seamless PLC integration for monitoring and automated control loops
- Building Automation: Efficient input collection for lighting, HVAC, and security systems
- Compact Control Panels: Fits tight spaces without compromising input capacity or performance
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