Brand: Siemens
Model: 6ES7221-1BF32-0XB0
Product Type: SIMATIC S7-1200 SM 1221 Digital Input Module
Designation: DI 8x24V DC
Condition: Brand New
Lifecycle Status: Active (PM300)
Product Overview
The 6ES7221-1BF32-0XB0 is a digital input signal module for the SIMATIC S7-1200 PLC system. It provides 8 digital inputs to expand the I/O capacity of the controller, allowing the system to receive signals from sensors, switches, and other field devices . The inputs are 24V DC and are configurable as either sink (source) or source (sink) .
Key Specifications
| Specification | Details |
|---|---|
| Product Type | SM 1221, DI 8x24V DC |
| Digital Inputs | 8 (24V DC, sink/source, groups of 2) |
| Input Voltage | 24V DC (20.4 to 28.8V) |
| Input Characteristic | Type 1 according to IEC 61131 |
| Input Current (Typ.) | 4 mA per channel |
| Backplane Current | 105 mA @ 5V DC max |
| Power Loss | 1.5 W typ |
| Input Delay | 0.2ms to 12.8ms, parameterizable in groups of four |
| Dimensions (W×H×D) | 45 × 100 × 75 mm |
| Weight | Approx. 170 g |
| Protection Rating | IP20 |
| Operating Temp (Horizontal) | -20°C to 60°C |
| Operating Temp (Vertical) | -20°C to 50°C |
| Cable Length (Shielded) | 500 m max |
| Cable Length (Unshielded) | 300 m max |
Key Features
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8 Digital Inputs: Provides 8 channels for connecting sensors, pushbuttons, and limit switches, configurable as sink or source .
-
Parameterizable Input Delay: Filter input noise with selectable input delay times (0.2ms to 12.8ms) in groups of four channels .
-
Diagnostic Alarms: Monitors supply voltage and triggers diagnostic alarms for troubleshooting .
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LED Status Indicators: Visual indication of each input's status for quick diagnostics .
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Galvanic Isolation: Input channels are isolated in groups of 2 .
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Wide Compatibility: Designed for the SIMATIC S7-1200 PLC system and integrates seamlessly into TIA Portal .
Applications
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Expanding digital input capacity of S7-1200 PLC systems
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Connecting discrete field devices (pushbuttons, limit switches, proximity sensors)
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Factory automation and machinery control
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Process control and building automation
Package Includes
1 x Siemens 6ES7221-1BF32-0XB0 SM 1221 Digital Input Module
(Front connector sold separately)
Shipping
DHL/FedEx fast shipping with tracking. Ships within 24 hours.
No battery restrictions – standard carrier shipping applies.
Warranty
1-year warranty against defects. 30-day returns.